JP2013048404A - Camera system, accessory, camera, camera system control program, accessory control program, and camera control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera system, an accessory, a camera, a camera system control program, an accessory control program, and a camera control program, capable of improving convenience.SOLUTION: The camera system comprises: an imaging part; a positioning part for positioning; and a control part for controlling the positioning part, wherein the control part makes at least one of operations of the positioning part and the control part transit to a power saving mode while an imaging part continues a predetermined operation.

Description

  The present invention relates to a camera system, an accessory, a camera, a camera system control program, an accessory control program, and a camera control program.

  The camera may be used with accessories such as a flash device (for example, see Patent Document 1). The accessory is used by being connected to an accessory shoe (also called a shoe seat, a hot shoe, etc.) of the camera. The accessory shoe has a terminal for supplying a control signal for controlling the accessory to the accessory. The camera can control the accessory by transmitting a control signal to the accessory via the terminal of the accessory shoe.

US Patent Application Publication No. 2010/033292

  The accessory was not convenient because it had a built-in battery or was supplied from the camera via a cable. The present invention has been made in view of the above circumstances, and an object thereof is to provide a camera system, an accessory, a camera, a camera system control program, an accessory control program, and a camera control program that can improve convenience. .

  In order to achieve the above object, a camera system according to the present invention includes an imaging unit, a positioning unit that performs positioning, and a control unit that controls the positioning unit. While the operation is continued, at least one of the positioning unit and the control unit is shifted to a power saving mode.

  In order to achieve the above object, an accessory according to the present invention is an accessory that can communicate with a camera, and includes a positioning unit that performs positioning, and a control unit that controls the positioning unit, and the control unit includes: While the camera continues a predetermined operation, at least one of the positioning unit and the control unit is shifted to a power saving mode.

  In addition, the camera according to the present invention includes an imaging unit, a positioning unit that performs positioning, and a control unit that controls the positioning unit, and the control unit continues the predetermined operation of the imaging unit. In the meantime, at least one operation of the positioning unit and the control unit is shifted to a power saving mode.

  The camera system control program according to the present invention is a program that includes a photographing unit, a positioning unit that performs positioning, and a control unit that controls the positioning unit, and causes a computer to execute control of the camera system. While the imaging unit continues a predetermined operation, the computer is caused to execute a procedure for switching at least one operation of the positioning unit and the control unit to a power saving mode.

  Further, the accessory control program according to the present invention is a program that includes a positioning unit that performs positioning and a control unit that controls the positioning unit, and causes a computer to execute control of an accessory that can communicate with the camera. While the camera continues a predetermined operation, the computer is caused to execute a procedure for shifting at least one operation of the positioning unit and the control unit to a power saving mode.

  A camera control program according to the present invention is a program for causing a computer to execute control of a camera, including a photographing unit, a positioning unit that performs positioning, and a control unit that controls the positioning unit. While the imaging unit continues a predetermined operation, the computer is caused to execute a procedure for switching at least one operation of the positioning unit and the control unit to a power saving mode.

  According to the present invention, it is possible to provide a camera system, an accessory, a camera, a camera system control program, an accessory control program, and a camera control program that can improve convenience.

It is a figure which shows the external appearance of the camera system of this embodiment. It is the figure which looked at the camera system of this embodiment from the opposite side to FIG. It is a figure which shows the external appearance of the accessory shoe of this embodiment. It is a figure which shows the accessory of this embodiment. It is a figure which shows the external appearance of the connector of this embodiment. It is a block diagram which shows the function structure of the camera system of this embodiment. It is a figure which shows the structure of the accessory of this embodiment, and the connection relationship between an accessory and a camera. It is a figure which shows the timing which performs each process in charge control. (A) is a figure which shows typically the connection relation of a starting detection level and a camera control part, (B) is a figure which shows the structure of a level switching part typically. It is a figure which shows the procedure of the process in the camera system of this embodiment. It is a figure which shows the procedure of the process in a communication preparation sequence. It is a figure which shows the procedure of the process in an initial stage communication sequence. It is a figure which shows the procedure of the process which continues from FIG. It is a figure which shows the procedure of the process in control which supplies electric power to an accessory. It is a figure which shows the procedure of the process in a regular communication sequence. It is a figure which shows the procedure of the process which continues from FIG. It is a figure which shows the procedure of the setting process which validates or disables each light emission function. It is a figure which shows the procedure of the process of charge control. It is a figure which shows the procedure of the process of the charge control in an initial stage communication sequence. It is a figure which shows the procedure of the process of the charge control in a regular communication sequence. It is a figure which shows the procedure of the process in an imaging | photography sequence. It is a figure which shows the procedure of the process in the imaging | photography sequence which makes an illumination light emission function function. It is a figure which shows the timing which performs each process of control which extends lighting time. It is a figure which shows the procedure of the process which complete | finishes the process in an accessory. It is a figure which shows the procedure of the process in the initial stage communication sequence of the modification 1. It is a figure which shows the procedure of the process in the electric power feeding control of the modification 2. It is a figure which shows the procedure of the process of the charge control of the modification 3. It is a figure which shows the external appearance of the camera system 1a of this embodiment. It is the figure which looked at the camera system 1a of this embodiment from the opposite side to FIG. It is a figure which shows the 2nd connector 620 which concerns on this embodiment. It is a block diagram which shows the structure of the accessory 600 of this embodiment. It is a block diagram explaining the connection relation of the camera 10a and the accessory 600 which concern on this embodiment. It is a figure explaining the structure of a navigation message. It is an example of NMEA data (1st GPS information). It is a figure explaining the structure of the data contained in the 2nd GPS information which concerns on this embodiment. It is a flowchart which shows the procedure of the process in the camera system 1a which concerns on this embodiment. It is a figure which shows the procedure of the process in the initial stage communication sequence in the accessory 600 which concerns on this embodiment. It is a figure which shows the procedure of the process in the 2nd regular communication sequence in the accessory 600 which concerns on this embodiment. It is a figure which shows the procedure of the update process of the GPS data in the camera 10a which concerns on this embodiment. It is a figure which shows the procedure of the process of the camera 10a and the accessory 600 in the still image photography concerning this embodiment. It is a figure which shows the procedure of the process of the camera 10a and the accessory 600 in the video recording which concerns on this embodiment. It is a figure explaining the process in the power supply control of the accessory 600 by the camera 10a which concerns on this embodiment. It is a figure which shows the procedure of the removal process (power-off process) of the accessory 600 which concerns on this embodiment. It is a figure which shows the example of operation | movement when a connection cable is connected to the data terminal 640 which concerns on this embodiment. It is a figure which shows the external appearance of the camera system 1b of this embodiment. It is the figure which looked at the camera system 1b of this embodiment from the opposite side to FIG. It is a block diagram explaining the connection relation of the camera 10b which concerns on this embodiment, and the GPS part 600b.

  This embodiment will be described. In the following description, the same components are denoted by the same reference numerals, and the description thereof may be simplified or omitted.

  FIG. 1 is a diagram illustrating an appearance of a camera system 1 according to the present embodiment. FIG. 2 is a view of the camera system 1 of the present embodiment as viewed from the opposite side to FIG.

  A camera system 1 shown in FIGS. 1 and 2 includes a camera 10 (camera body 100 and photographing lens 200) and an accessory 400. The accessory 400 of the present embodiment is an external lighting device (which can be attached to and detached from the camera 10) that has a light emitting function and can illuminate a subject. The camera 10 can communicate with the accessory 400 and control the accessory 400. For example, the camera system 1 can capture an image of the subject with the camera 10 while illuminating the subject with the accessory 400.

  As shown in FIG. 1, the camera 10 includes a camera body 100 and a photographing lens (interchangeable lens) 200. The camera body 100 includes a lens mount 11 to which a photographing lens 200 can be attached. The photographing lens 200 includes a lens side mount (not shown) for mounting with the camera body 100. The taking lens 200 can be attached to and detached from the lens mount 11 via the lens side mount. The camera body 100 includes a top surface (upper surface) 13 disposed at an upper portion of a side surface facing the front surface 12 on which the lens mount 11 is disposed, and a rear surface 14 disposed on the side opposite to the front surface 12. And have.

  The camera body 100 includes a release button 16, an accessory shoe (hereinafter referred to as a shoe seat 15), and a power switch 31 that are disposed on the top surface 13. The camera 10 detects that the release button 16 has been pressed, and performs various processes such as an imaging process. The shoe seat 15 is configured so that the accessory 400 can be attached thereto. The power switch 31 is a switch for switching the camera body 100 between an on state and an off state.

  In the present embodiment, the XYZ orthogonal coordinate system shown in FIG. In this XYZ orthogonal coordinate system, the Y-axis direction is a direction substantially parallel to the optical axis of the taking lens 200. In this XYZ orthogonal coordinate system, the X-axis direction and the Z-axis direction are directions orthogonal to the Y-axis direction and orthogonal to each other. The front surface 12 and the back surface 14 are each substantially orthogonal to the Y-axis direction. The top surface 13 is substantially orthogonal to the Z-axis direction.

  The accessory 400 includes an accessory main body 410, a connector 420, and a light emitting unit 425. The light emitting unit 425 includes a flash light emitting unit 430 and an illumination light emitting unit 435 each having an emission surface for emitting light. The accessory main body 410 accommodates the illumination light emitting unit 435 and various electrical components. The connector 420 is provided below the accessory body 410. The connector 420 can be attached to and detached from the shoe seat 15 of the camera body 100. The accessory 400 is attached to the camera body 100 and fixed to the camera body 100 by attaching the connector 420 to the shoe seat 15. The flash light emitting unit 430 is provided on the side opposite to the connector 420 (upward) with respect to the accessory body 410. When the accessory 400 is attached to the camera body 100 and the exit surface of the flash light emitting unit 430 faces the front 12 side (+ Y direction side) of the camera body 100, the flash light emitting unit 430 takes a picture. Flash illumination light (flash emission from the Xe tube) can be emitted in a direction substantially parallel to the optical axis of the lens 200. The flash light emitting unit 430 is provided so that the direction (posture) of the exit surface can be changed (posture change) with respect to the accessory body 410. For example, it is possible to emit flash illumination light with the emission surface of the flash light emitting unit 430 directed upward (+ Z side) of the accessory body 410. On the other hand, the illumination light emitting unit 435 is directed toward the front surface 12 side (+ Y side) of the camera body 100 (in a direction substantially parallel to the optical axis of the photographing lens 200) with the accessory 400 attached to the camera body 100. Continuous illumination light (for example, LED illumination light) can be emitted.

  As shown in FIG. 2, the camera body 100 includes a display unit 102 disposed on the back surface 14 and a setting switch 104 disposed on the back surface 14. The display unit 102 includes a display element such as a liquid crystal display element or an organic electroluminescence display element. The display unit 102 can display an image to be captured, an image indicating various settings, an image indicating the state of the accessory 400, an image indicating an imaging condition, and the like. The setting switch 104 can accept input from the user for changing various setting items of the camera 10 and the accessory 400. The various setting items include at least one of zoom magnification setting, shooting mode setting, white balance setting, exposure time setting, and display switching setting. The shooting mode setting is, for example, auto mode setting or manual mode setting.

  As shown in FIG. 2, the accessory 400 includes a first pilot lamp 455 (pilot lamp), a second pilot lamp 460 (pilot lamp), a first operation unit 424, and a second operation unit 471. The first pilot lamp 455 emits light according to the operating state of the flash light emitting unit 430 shown in FIG. The second pilot lamp 460 emits light according to the operating state of the illumination light emitting unit 435 shown in FIG. The first operation unit 424 is an operation member operated by the user in order to remove the accessory 400 from the camera body 100 (in other words, the first operation unit 424 is a removal operation member). The second operation unit 471 is an operation member operated by the user in order to switch between the ON state and the OFF state of the entire function of the accessory 400 (in other words, the second operation unit 471 is an ON / OFF operation switch. ).

  FIG. 3 is a view showing an appearance of the shoe seat 15 of the present embodiment. FIG. 4 is a plan view of the shoe seat 15 seen partially from above (in the −Z-axis direction from the top plate portion 22 in FIG. 3).

  The shoe seat 15 includes a bottom plate portion 21, a top plate portion 22, a side plate portion 23 disposed between the bottom plate portion 21 and the top plate portion 22, and an opening 24 disposed between the bottom plate portion 21 and the top plate portion 22. And a terminal portion 25 disposed on the bottom plate portion 21.

  The bottom plate portion 21 is attached to the top surface 13 of the camera body 100 shown in FIG. The bottom plate portion 21 has a mounting hole 26 used for mounting on the top surface 13 of the camera body 100 and a locking hole 27 used for locking the accessory 400. The bottom plate portion 21 is fixed to the top surface 13 of the camera body 100 by screws or the like disposed inside the attachment hole 26. In the present embodiment, the + Z-axis direction may be referred to as “upward”.

  The top plate 22 has a substantially U-shaped planar shape when viewed from above (Z-axis direction). The top plate portion 22 projects inward from the side plate portion 23 when viewed from above (Z-axis direction). The side plate portion 23 has a pair of inner walls extending from the opening 24 in a predetermined direction (Y-axis direction). The pair of inner walls of the side plate portion 23 are arranged to face each other in a direction (X-axis direction) orthogonal to the extending direction (Y-axis direction) of the inner wall.

  The opening 24 is open in a direction intersecting the direction (Z-axis direction) from the bottom plate portion 21 toward the top plate portion 22. The opening 24 is open in a direction substantially parallel to the extending direction (Y-axis direction) of the inner wall of the side plate portion 23. The opening 24 is sized and shaped so that the connector 420 can be inserted.

  The terminal portion 25 has a plurality (12) of terminals indicated by reference characters Tp1 to Tp12 in FIG. The plurality of terminals of the terminal portion 25 each extend in a direction substantially parallel to the extending direction (Y-axis direction) of the inner wall of the side plate portion 23. The plurality of terminals of the terminal portion 25 are arranged side by side in a direction (X-axis direction) orthogonal to the extending direction of the inner wall of the side plate portion 23. The terminals of the terminal portion 25 are arranged in a region partially overlapping (covered) with the top plate portion 22 when viewed from above.

  At least one of the plurality of terminals may be different in length in the Y-axis direction from the other terminals. For example, in the present embodiment, all the 12 terminals indicated by the symbols Tp1 to Tp12 are aligned at the end of the + Y side. On the other hand, the lengths of the three terminals indicated by the symbols Tp1 to Tp3 are longer in the −Y axis direction than the terminals indicated by the symbols Tp4 to Tp12. In other words, in the present embodiment, the three terminals indicated by the symbols Tp1 to Tp3 protrude more to the −Y side than the other terminals. As will be described later, Tp1 to Tp3 are so-called ground terminals. The reason why these ground terminals are made longer than the other terminals will be described later.

  The accessory 400 is attached to the shoe seat 15 by inserting the connector 420 into the opening 24 of the shoe seat 15 and sliding it in a predetermined direction (+ Y-axis direction) (see FIG. 1).

  FIG. 5 is a view showing an appearance of the connector 420 of the present embodiment. The connector 420 includes a bottom portion 421, a movable member (hereinafter referred to as a locking claw 422) that protrudes from the bottom portion 421 toward the outside of the connector 420, and a terminal portion 423 provided on the bottom portion 421.

  The bottom portion 421 contacts the bottom plate portion 21 of the shoe seat 15 in a state where the connector 420 is attached to the shoe seat 15. The locking claw 422 is provided so that it can advance and retreat (move) in a predetermined direction. In the present embodiment, the predetermined direction in which the locking claw 422 advances and retreats is the direction in which the locking claw 422 protrudes from the bottom 421 (Z-axis direction). The locking claw 422 is movable between a position protruding from the bottom 421 and a position accommodated in the accessory 400. The locking claw 422 is biased by a spring or the like so as to be pushed to the side (−Z side) protruding from the bottom 421 to the outside of the connector 420. As the connector 420 is slid and moved when the connector 420 is attached to the shoe seat 15, the locking claw 422 is pushed by the bottom plate portion 21 of the shoe seat 15 (under force) and retracted to the + Z side. It advances into the locking hole 27 at the position where the locking hole 27 is formed. As a result, the locking claw 422 of the connector 420 is locked with the inner peripheral surface of the locking hole 27 of the shoe seat 15, and movement relative to the shoe seat 15 is restricted in the sliding direction (Y-axis direction).

  The connector 420 is disposed between the bottom plate portion 21 and the top plate portion 22 while being inserted into the opening 24, and movement relative to the shoe seat 15 is restricted in a direction from the bottom plate portion 21 toward the top plate portion 22. The connector 420 is disposed between the pair of inner walls of the side plate portion 23 in a state of being inserted into the opening 24, and is connected to the shoe seat 15 in a direction (X-axis direction) from one inner wall to the other inner wall of the side plate portion 23. Movement is restricted.

  The first operation unit 424 (see FIG. 2) is an operation member that can be operated by the user to move the locking claw 422 in a predetermined direction. The first operation unit 424 of the present embodiment is provided on the back side of the accessory body 410. The first operation unit 424 includes a link mechanism that transmits a force received by a user operation to the locking claws 422. The locking claw 422 moves in a predetermined direction (+ Z axis direction in FIG. 5) by a force received from the link mechanism of the first operation unit 424. That is, when the first operating portion 424 is operated with the locking claw 422 being locked in the locking hole 27 shown in FIG. Moving. As a result, the restriction of the position of the accessory 400 with respect to the camera body 100 is released, and the accessory 400 can be detached from the camera body 100.

The terminal portion 423 has a plurality (12) of terminals indicated by reference signs Ts1 to Ts12.
The number of terminals included in the terminal portion 423 is the same as the number of terminals included in the terminal portion 25 of the shoe seat 15. The plurality of terminals included in the terminal portion 423 correspond one-to-one with any of the plurality of terminals included in the terminal portion 25 of the shoe seat 15. The plurality of terminals included in the terminal portion 423 come into contact with the corresponding terminals among the plurality of terminals included in the terminal portion 25 of the shoe seat 15 in a state where the connector 420 is connected to the shoe seat 15. Connected.

  FIG. 6 is a block diagram showing a functional configuration of the camera system of the present embodiment. As shown in FIG. 6, the photographing lens 200 includes an optical system 210, an optical system driving unit 220, and an optical system control unit 230. Light incident on the photographing lens 200 from the subject enters the light receiving surface of the image sensor 121 of the camera body 100 through the optical system 210.

  The optical system 210 includes a plurality of optical components such as a lens and a diaphragm, and a lens barrel that houses the plurality of optical components. The optical system 210 can image light incident from the outside of the camera body 100.

  The optical system driving unit 220 detects an actuator that drives the optical system 210, an encoder that detects the position of the optical component in the optical system 210, and a movement (at least one of a translational movement and a rotational movement) of the optical system 210 due to camera shake or the like. Provide a sensor. The actuator of the optical system drive unit 220 includes, for example, a focusing control motor, a power zoom control motor, a diaphragm aperture control motor, a vibration reduction (VR) control motor, and an expansion / reduction cylinder control motor. Including.

  The optical system drive unit 220 operates the actuator of the optical system drive unit 220 in accordance with a control command from the optical system control unit 230, thereby performing focusing control, zooming control, exposure control, VR control, and expansion / contraction control of the photographing lens 200. It can be carried out. Focusing control is control for adjusting the focal point of the optical system 210 by moving at least one of optical components such as a lens included in the optical system 210 in the optical axis direction by a focusing control motor. The zooming control is a control for changing the imaging angle of view by moving at least one of optical components such as a lens included in the optical system 210 in the optical axis direction by a power zoom control motor. In exposure control, the diaphragm constituting the optical system 210 is driven by a diaphragm aperture control motor to change the aperture size of the diaphragm, thereby adjusting the amount of light incident on the image sensor 121 through the optical system 210. It is control to do. The VR control is a control for correcting image shake due to camera shake by moving at least one of optical components such as a lens included in the optical system 210 in a direction intersecting the optical axis by a VR control motor. The expansion / contraction control is control for extending or contracting the photographic lens 200 in the optical axis direction by driving an expansion / contraction cylinder control motor.

  The optical system drive unit 220 is supplied with electric power from the battery BAT stored in the battery storage unit 110 of the camera body 100. The optical system driving unit 220 is supplied with power from the battery BAT via a terminal disposed on the lens mount 11 of the camera body 100. The actuators, encoders, and sensors that constitute the optical system driving unit 220 are operated by electric power supplied from the battery BAT.

  The optical system control unit 230 can communicate with a camera control unit 170 (described later) of the camera body 100 via a terminal disposed on the lens mount 11 of the camera body 100. The optical system control unit 230 can supply information indicating the detection result of the encoder of the optical system driving unit 220 and information indicating the detection result of the sensor to the camera control unit 170. Information supplied from the optical system control unit 230 to the camera control unit 170 includes lens type information indicating the type of the taking lens 200, lens focal length information, an aperture value set by exposure control, and a subject focus set by focusing control. Includes distance information, power consumption information, etc. The power consumption information indicates the power consumption consumed in the driving state, and is information that changes according to the lens type information and the driven state.

  The accessory 400 includes a flash light emitting unit 430, an illumination light emitting unit 435, an accessory control unit 440, and a nonvolatile memory 445. The illumination light emitting unit 435, the accessory control unit 440, and the nonvolatile memory 445 are accommodated in the accessory main body 410 illustrated in FIGS. 1 and 2, for example. Details of the accessory 400 will be described later.

  The camera body 100 includes a battery storage unit 110, an imaging processing unit 120, a shutter drive unit 130, a display unit control circuit 135, a memory 140, a memory control circuit 145, an input unit 150, an operation detection circuit 155, a storage unit 158, and camera control. Part 170 is provided.

  The battery storage unit 110 can store a battery BAT such as a primary battery or a secondary battery. The battery BAT is mounted on the camera body 100 by being stored in the battery storage unit 110. The battery BAT stored in the battery storage unit 110 can supply power (PWR) necessary for the operation of the components of the camera system 1, for example, the display unit 102, the photographing lens 200, the accessory 400, and the like.

  The imaging processing unit 120 includes an imaging element 121, an imaging element control circuit 122, and an image circuit 123. The image sensor 121 includes a plurality of pixels arranged two-dimensionally. Each pixel of the image sensor 121 includes a light receiving element such as a CCD (Charge Coupled device) or a CMOS (Complementary Metal Oxide Semiconductor) sensor. The light receiving element of the imaging element 121 generates a charge corresponding to the amount of light incident on each pixel from the optical system 210. The image sensor 121 converts the charge generated in the light receiving element by the light incident on each pixel into a signal. The image sensor 121 generates an analog image signal corresponding to an image (optical image) formed on the light receiving surface of the image sensor 121 via the optical system 210. The image sensor 121 is connected to each of the image sensor control circuit 122 and the image circuit 123. The image circuit 123 amplifies the image signal output from the image sensor 121 and converts the analog image signal into a digital signal. The image sensor control circuit 122 can control the image sensor 121 to cause the image sensor 121 to generate an image signal corresponding to the image, to output the generated image signal, and the like.

  The shutter driving unit 130 controls opening and closing of a shutter accommodated in the camera body 100. This shutter shields light incident on the light receiving surface of the image sensor 121 through the optical system 210 while the shutter is closed. If the camera body 100 is not equipped with a shutter mechanism for exposure control, the shutter drive unit 130 is also unnecessary.

  The display unit control circuit 135 performs display control such as lighting, brightness adjustment, and extinguishing of the display unit 102, and processing for causing the display unit 102 to display image data output from the camera control unit 170, for example.

  The memory 140 is a storage medium that can be inserted into and removed from the camera body 100, such as a memory card. The memory 140 stores image data generated by the camera control unit 170, for example. The memory control circuit 145 controls input / output of information between the camera control unit 170 and the memory 140. The memory control circuit 145, for example, stores information such as image data generated by the camera control unit 170 in the memory 140 or reads out information such as image data stored in the memory 140 to the camera control unit 170. Perform output processing.

  The input unit 150 includes a setting switch 104 and a release button 16 that can be operated by the user. The operation detection circuit 155 detects a user operation input to the input unit 150. The operation detection circuit 155 generates operation information indicating the user's operation input to the input unit 150, and outputs the generated operation information to the camera control unit 170.

  The storage unit 158 includes a nonvolatile memory 160 and a buffer memory 165. The nonvolatile memory 160 is a program for operating the camera control unit 170, image data generated by imaging, information indicating the state of the apparatus, information indicating power consumption of each load unit of the camera system 1, and input from the user. Information such as various settings and imaging conditions is stored. The information indicating the state of the apparatus includes voltage information (remaining battery level) of the battery BAT stored in the battery storage unit 110 of the camera body 100, information indicating the control state of each actuator of the photographing lens 200, and the like. Information indicating the power consumption of each load unit of the camera system 1 includes power consumed by the shutter driving unit 130 (necessary for operation), power consumed by the actuator of the photographing lens 200 (necessary for operation), and the accessory 400. Power consumption (necessary for operation). The buffer memory 165 is a temporary information storage unit used for the control process of the camera control unit 170. For example, the camera control unit 170 temporarily stores, in the buffer memory 165, an image signal output from the image sensor 121, image data generated according to the image signal, and the like.

  The camera control unit 170 includes a CPU (Central Processing Unit) that controls the operation of the components of the camera body 100 based on a program stored in the non-volatile memory 160 and an electronic component such as an ASIC (Application Specific Integrated Circuit). Prepare. For example, the camera control unit 170 turns on the power to the camera body 100 or controls the drive of the optical system 210 via the optical system drive unit 220 according to the operation information output from the operation detection circuit 155 to the camera control unit 170. Then, drive control of the image sensor 121 via the image sensor control circuit 122, display control of the display unit 102 via the display unit control circuit 135, control of processing on the image signal output to the image circuit 123, and the like are performed.

  The camera control unit 170 includes an image processing unit 171, a display control unit 172, an imaging control unit 173, an operation detection processing unit 174, a power control unit 175, and a communication unit 176.

  The image processing unit 171 performs image processing for generating image data based on the image signal output from the image circuit 123. The image processing unit 171 stores the image data generated by the image processing in the buffer memory 165.

  The display control unit 172 reads the image data generated by the image processing unit 171 and stored in the buffer memory 165 at regular time intervals, and causes the display unit 102 to repeatedly display the read image data. Further, the display control unit 172 reads the image data generated by the image processing unit 171 and stored in the buffer memory 165 at regular time intervals, and records the data in the memory 140 as moving image format data (moving image data). Further, the display control unit 172 displays the remaining charge amount of the battery BAT on the display unit 102 according to the determination result of the power control unit 175 described later.

  The operation detection processing unit 174 determines a user operation detected by the operation detection circuit 155 based on the operation information output from the operation detection circuit 155, and stores the determined information in the buffer memory 165. The operation detection processing unit 174 outputs control commands for various processes corresponding to operations from the user to components (function units) that execute processes corresponding to the operations. For example, when the operation detection circuit 155 detects an input to the input unit 150 requesting execution of an imaging process, the operation detection processing unit 174 outputs the operation information output to the operation detection processing unit 174. Based on this, a control command for requesting execution of the imaging process is output to the imaging control unit 173. In addition, the operation detection processing unit 174 detects that the operation detection circuit 155 detects an input to the input unit 150 that requests execution of an autofocus (AF) process, for example. On the basis of the operation information output to, a control command for requesting execution of AF processing is output. In the AF process, the optical system control unit 230 refers to a distance measurement result using an image detected by the image sensor 121 via the optical system 210 based on the control command output by the operation detection processing unit 174. The focusing control motor of the optical system driving unit 220 is controlled to adjust the focus of the optical system 210 so that, for example, the subject designated by the user is in focus.

  The imaging control unit 173 outputs a control signal for causing the components of the camera system 1 to execute an imaging process to the components of the camera system 1 based on the control command output by the operation detection circuit 155. For example, the imaging control unit 173 executes the following process as a process related to the imaging process. In the imaging process, the imaging control unit 173 performs focusing control, exposure control, zooming control, VR control, and the like of the optical system 210 via the optical system control unit 230 in accordance with imaging conditions input in advance by the user. . In addition, the imaging control unit 173 controls the time during which the shutter is open (exposure time) by controlling the shutter driving unit 130 in the imaging process, so that the light from the optical system 210 is applied to the light receiving surface of the imaging element 121. Irradiate only for the exposure time. In addition, the imaging control unit 173 controls the accessory 400 as necessary, and irradiates light from the accessory 400 in synchronization with the imaging timing.

  The power control unit 175 determines the remaining amount of power in the battery BAT by comparing the result of detecting the power supply voltage output from the battery BAT with a determination threshold. The power control unit 175 collects information indicating the power consumption of each load unit of the camera system 1 and monitors the power consumption of each load unit of the camera system 1.

  The communication unit 176 is communicably connected to a load control unit that controls each load unit inside the camera body 100. The load unit inside the camera body 100 is, for example, the display unit 102, and the load control unit is, for example, the display unit control circuit 135. In addition, the communication unit 176 is connected to an external device arranged outside the camera body 100 in the camera system 1 so as to be able to communicate with a control unit of each external device. The photographing lens 200 of this embodiment is one of external devices, and the optical system control unit 230 is connected to be communicable with the communication unit 176. Moreover, the accessory 400 of this embodiment is one of external devices, and the accessory control part 440 is connected so that communication with the communication part 176 is possible.

  FIG. 7 is a diagram illustrating a configuration of the accessory 400 according to the present embodiment and a connection relationship between the accessory 400 and the camera 10 (the camera body 100 and the photographing lens 200 described above).

  First, the camera 10 will be described. The camera 10 includes a load unit 30, a power switch 31, a power supply unit 32, and an accessory power supply control unit 33.

  The load unit 30 includes a load unit of the camera body 100 such as the shutter drive unit 130 and the display unit 102 described above, and a load external to the camera body 100 such as the optical system drive unit 220 and the optical system control unit 230. Part. The load unit 30 includes a heavy load unit with high power consumption and a light load unit with relatively low power consumption than the heavy load unit. The heavy load unit includes a load unit having an actuator, such as the optical system drive unit 220 and the shutter drive unit 130 in the camera body 100, for example. The light load unit includes an optical system control unit 230, an image processing unit 171, each control circuit, a display unit, and the like.

  The power switch 31 is a switch that cuts off the supply of power from the battery BAT to the heavy load portion of the load portion 30.

  The power supply unit 32 stabilizes the output voltage of the battery BAT based on the power supplied from the battery BAT and supplies it to the light load unit of the load unit 30 and the camera control unit 170. The power supply unit 32 includes a voltage detection sensor that detects the output voltage of the battery BAT, and a constant voltage circuit that stabilizes the output voltage of the battery BAT.

  The accessory power supply control unit 33 includes a first terminal, a second terminal, and a control terminal. The accessory power supply control unit 33 is a switch that switches whether or not the first terminal and the second terminal are in a conductive state according to a control signal input to the control terminal. In the description of the present embodiment, when a switch is in a conductive state between its terminals, it is referred to as “closing the circuit”, and when the switch is in a non-conductive state between its terminals as “cutting off the circuit”. Call.

  The terminal part 25 of the camera body 100 can be electrically connected to the terminal part 423 of the accessory 400. The terminal portion 25 includes a plurality of terminals indicated by reference characters Tp1 to Tp12 (see FIG. 4). In the description of the present embodiment, each terminal of the terminal portion 25 of the shoe seat 15 may be distinguished by attaching a number indicating the terminal arrangement order. This number is an ascending order from one side (+ X side) in the terminal arrangement direction (X-axis direction) to the other side (−X side). For example, among the plurality of terminals of the terminal section 25, the terminal arranged on the most + X side is called the first terminal, and the terminal arranged on the most -X side is called the twelfth terminal.

  As shown in FIGS. 4 and 7, each terminal in the terminal portion 25 of the camera body 100 is assigned as follows.

  In the terminal portion 25, an eleventh terminal (hereinafter referred to as a power supply terminal Tp11) and a twelfth terminal (hereinafter referred to as a power supply terminal Tp12) respectively supply power PWR from the battery BAT in the camera body 100 to the accessory 400 side. It is a terminal to supply.

  The first terminal (hereinafter referred to as ground terminal Tp1) and the second terminal (hereinafter referred to as ground terminal Tp2) are ground terminals corresponding to the power supply terminal Tp11 and the power supply terminal Tp12, respectively. The ground terminal Tp1 and the ground terminal Tp2 are terminals whose potential becomes the reference potential of the power PWR. The ground terminal Tp1 and the ground terminal Tp2 are ground terminals for a circuit (heavy load part of the load part 30) in the camera body 100 that uses the power PWR.

  The third terminal (hereinafter referred to as the reference potential terminal Tp3) and the fifth terminal (hereinafter referred to as the reference potential terminal Tp5) are terminals whose potential becomes the reference potential SGND (signal ground) (that is, the signal potential). This is the terminal that serves as a reference potential for sending and receiving). The reference potential terminal Tp3 and the reference potential terminal Tp5 are ground terminals for circuits in the camera body 100 (the camera control unit 170, the power supply unit 32, and the light load unit of the load unit 30).

  The fourth terminal (hereinafter referred to as a synchronization signal terminal Tp4) is a terminal to which a synchronization signal (clock signal) CLK that is a communication clock signal generated on the accessory 400 side is input from the accessory 400.

  The sixth terminal (hereinafter referred to as communication signal terminal Tp6) is also a terminal that outputs a communication signal DATA including camera side data (including various commands) to the accessory 400 side, and vice versa. It is also a terminal to which a communication signal DATA including information (such as unique information and setting information of the accessory 400) is input from the accessory 400 side.

  The seventh terminal (hereinafter referred to as the activation state detection terminal Tp7) is a state in which the connector 420 is attached to the shoe seat 15 and indicates the accessory activation state (in other words, the accessory 400 can be activated and function. This is a terminal for the camera control unit 170 to detect whether or not the accessory 400 side provides the activation detection level (electrical L level) DET (which indicates the activation state (functional enable state)) (see FIG. 9 for details). Will be described later).

  The eighth terminal (hereinafter referred to as a light emission control signal terminal Tp8) sends a light emission control (light emission command) signal X for controlling the light emission of at least one of the flash light emitting unit 430 and the illumination light light emitting unit 435 of the accessory 400 to the accessory 400. Output terminal. The light emission control (light emission command) signal X is a control command that instructs the flash light emission unit 430 or the illumination light emission unit 435 to start light emission.

  The ninth terminal (hereinafter referred to as communication control signal terminal Tp9) is a terminal that outputs a communication control (communication start) signal Cs from the camera 10 to the accessory 400 when communication from the camera 10 to the accessory 400 is started. is there. The communication control signal Cs is a signal that determines the communication start timing of DATA communication between the camera 10 and the accessory 400 via the communication signal terminal Tp6.

  The tenth terminal (hereinafter referred to as open terminal Tp10) is a terminal to which neither power nor signal is supplied, and is a so-called open terminal. This open terminal Tp10 is a terminal provided in advance for future function expansion of the system.

  In the above terminal arrangement, the power supply terminal Tp11 and the power supply terminal Tp12 are arranged so as to be biased toward one side (−X side) in the arrangement direction (X-axis direction) of the plurality of terminals of the terminal portion 25. In other words, the power supply terminal Tp11 and the power supply terminal Tp12 are arranged side by side (collectively) in one terminal portion in the 12 terminal arrangement of the terminal portion 25. The ground terminal Tp1 and the ground terminal Tp2 are arranged so as to be biased toward the other side (+ X side) in the arrangement direction (X-axis direction) of the plurality of terminals of the terminal portion 25. In other words, the ground terminal Tp1 and the ground terminal Tp2 are close to the other end (the end opposite to the arrangement side of the power supply terminal Tp11 and the power supply terminal Tp12) in the 12 terminal arrangement of the terminal portion 25 ( They are arranged side by side. In other words, the ground terminal Tp1 and the ground terminal Tp2 are disposed at positions (relatively far positions) away from the power supply terminals Tp11 and Tp12 than the communication terminals Tp3 to Tp9. In other words, the communication system terminals Tp3 to Tp9 are arranged on the other side (+ X side) opposite to the one side (−X side) with respect to the power supply terminals Tp11 and Tp12.

  Further, in the above terminal arrangement, out of the 12 terminals of the terminal section 25, terminals (communication signal terminal Tp6, light emission control signal terminal Tp8, communication control signal terminal Tp9) that output a control signal to the accessory 400, from the accessory 400 Both a terminal to which a control signal is input (synchronization signal terminal Tp4) and a terminal (activation state detection terminal Tp7) for identifying whether the accessory 400 can function are arranged between the power supply terminal Tp11 and the ground terminal Tp2. Has been.

  The open terminal Tp10 is arranged between the power supply terminal Tp11 and the communication control signal terminal Tp9 in the 12 terminal arrangement of the terminal portion 25. By arranging the open terminal Tp10 at this position, terminals (Tp4, Tp6, Tp8, Tp9) used in the signal communication system and an activation state detection terminal Tp7 for detecting the activation state of the accessory 400 are connected from the power supply terminals Tp11, Tp12. Can be separated.

In the above terminal arrangement, the light emission control signal terminal Tp8 is arranged next to the communication control signal terminal Tp9 on the side opposite to the open terminal Tp10. An activation state detection terminal Tp7 is arranged next to the light emission control signal terminal Tp8 on the side opposite to the communication control signal terminal Tp9.
That is, the light emission control signal terminal Tp8 is disposed so as to be sandwiched between the activation state detection terminal Tp7 and the communication control signal terminal Tp9.

  In the above terminal arrangement, the communication signal terminal Tp6 is arranged next to the activation state detection terminal Tp7 on the side opposite to the light emission control signal terminal Tp8. That is, the activation state detection terminal Tp7 is disposed so as to be sandwiched between the communication signal terminal Tp6 and the light emission control signal terminal Tp8.

  In the above terminal arrangement, the reference potential terminal Tp5 is arranged next to the communication signal terminal Tp6 on the side opposite to the activation state detection terminal Tp7. That is, the communication signal terminal Tp6 is disposed so as to be sandwiched between the reference potential terminal Tp5 and the activation state detection terminal Tp7.

In the above terminal arrangement, the synchronization signal terminal Tp4 is arranged next to the reference potential terminal Tp5 on the side opposite to the communication signal terminal Tp6. Another reference potential terminal Tp3 is arranged next to the synchronization signal terminal Tp4 on the side opposite to the reference potential terminal Tp5. That is, the synchronization signal terminal Tp4 is disposed so as to be sandwiched between two reference potential terminals (Tp3 and Tp5).
A ground terminal Tp2 is arranged next to the reference potential terminal Tp3 on the side opposite to the synchronization signal terminal Tp4. That is, three GND-related terminals (the reference potential terminal Tp3 and the two ground terminals Tp1 and Tp2) are arranged in the vicinity of one end of the terminal array.

  Details of signals input to the terminals of the terminal unit 25 and signals output from the terminals will be described later.

  The camera control unit 170 supplies the accessory 400 with a control signal for communicating with the accessory 400 and controlling the accessory 400 via the terminal unit 25 and the terminal unit 423. In the present embodiment, the control signal supplied to the accessory 400 by the camera control unit 170 includes the light emission control signal X for controlling the light emission of the light emitting unit 425 in the accessory 400, the communication signal DATA, and the communication between the camera 10 and the accessory 400. It is a communication control signal Cs that determines the timing.

  The camera control unit 170 reads information stored in at least one of the nonvolatile memory 160 and the buffer memory 165 illustrated in FIG. 6 and transmits the read information to the accessory control unit 440. The camera control unit 170 stores the information received from the accessory control unit 440 in at least one of the nonvolatile memory 160 and the buffer memory 165.

  The information stored in the nonvolatile memory 160 includes camera initial state information indicating the initial state of the camera 10 and camera setting state information indicating the setting state of the camera 10. The camera control unit 170 can transmit at least one piece of information included in the camera initial state information or the camera setting state information to the accessory control unit 440.

  The camera initial state information includes information indicating the type of the camera 10, information indicating the type of function the camera 10 has, information indicating the characteristics of each function the camera 10 has, and the like. The information indicating the type of function of the camera 10 is, for example, information indicating whether to perform AE control, information indicating whether to perform AWB control, or the like. The camera setting state information includes setting information indicating whether or not each function of the camera 10 is functioning, information indicating the shooting mode of the camera 10, and the like. The information indicating the shooting mode is, for example, information indicating whether or not the camera 10 is set to a shooting mode for capturing an image as a moving image, and whether or not the camera 10 is set to a shooting mode for capturing an image as a still image. It is information etc. which show. The information indicating that the camera 10 is set to the shooting mode for capturing an image as a still image is information indicating whether the mode is set to single shooting or continuous shooting, for example. The mode for performing single shooting is, for example, a shooting mode for capturing one image each time the release button 16 is pressed. The continuous shooting mode is a shooting mode in which a plurality of images are captured while the release button 16 is pressed.

Next, the connection relationship of each component in the camera 10 will be described with reference to FIG. The battery BAT in the following description is assumed to be stored in the battery storage unit 110. The positive electrode of the battery BAT is connected to one end of the power switch 31 via the power line 40 (PWR).
The other end of the power switch 31 is connected to the power terminal of the heavy load portion of the load portion 30. The ground terminal of the heavy load part of the load part 30 is connected to the negative electrode of the battery BAT stored in the battery storage part 110 via the ground line 41 (PGND).

  The positive electrode of the battery BAT is connected to the input terminal of the power supply unit 32 via the power supply line 40. The first output terminal of the power supply unit 32 is connected to the power supply terminal of the light load unit of the load unit 30. The ground terminal of the light load part of the load part 30 is connected to the negative electrode of the battery BAT via a ground line 42 (SGND). The second output terminal of the power supply unit 32 is connected to the power supply terminal of the camera control unit 170. The potential of the second output terminal is different from the potential of the first output terminal. The ground terminal of the camera control unit 170 is connected to the negative electrode of the battery BAT via the ground line 42 (SGND).

  The ground terminal Tp1 is connected to the negative electrode of the battery BAT through a ground line 43 (GND). The ground terminal Tp2 is connected to the negative electrode of the battery BAT via the ground line 43 in parallel with the ground terminal Tp1. The reference potential terminal Tp3 is connected to the negative electrode of the battery BAT through the ground line 42. The reference potential terminal Tp5 is connected to the negative electrode of the battery BAT via the ground line 42 in parallel with the reference potential terminal Tp3. Note that the ground of the camera 10 of the present embodiment employs a so-called single point ground (single point ground).

The synchronization signal terminal Tp4, the communication signal terminal Tp6, the activation state detection terminal Tp7, the light emission control signal terminal Tp8, and the communication control signal terminal Tp9 are each connected to the camera control unit 170 via signal lines. The open terminal Tp10 is insulated from other circuits such as the camera control unit 170, the power supply line 40, the ground line 41, the ground line 42, and the ground line 43.
A pull-up resistor is provided on the line connected to the communication signal terminal Tp6. This pull-up resistor is electrically connected to the output side of the power supply unit 32. For this reason, the potential (level) at the communication signal terminal Tp6 is maintained at the H level before the accessory 400 is attached and before the communication with the accessory 400 is started. Note that a pull-up resistor is provided on the line connected to the activation state detection terminal Tp7 as well as the communication signal terminal Tp6. This will be described later with reference to FIG.

  The power supply terminal Tp11 is connected to the first terminal of the accessory power supply control unit 33. The power supply terminal Tp12 is connected to the first terminal of the accessory power supply control unit 33 in parallel with the power supply terminal Tp11. The second terminal of the accessory power supply control unit 33 is connected to the positive electrode of the battery BAT via the power supply line 40. The accessory power supply control unit 33 can cut off the power supply from the battery BAT to the power supply terminal Tp11 and the power supply terminal Tp12 by a control signal input to the control terminal from the camera control unit 170.

  Next, the configuration on the accessory 400 side will be described with reference to FIG. The accessory 400 according to the present embodiment is operated by the power PWR supplied from the camera 10. The accessory 400 can make each component of the accessory 400 function with the electric power PWR supplied from the camera 10, when the power supply which supplies the electric power consumed in the accessory 400 is not mounted in the accessory 400 side.

  The accessory 400 includes a flash light emission unit 430, an illumination light emission unit 435, an accessory control unit 440, a nonvolatile memory 445, a first power supply unit (power supply unit 1) 450-1, and a second power supply unit (power supply unit 2) 450-2. , A second pilot lamp 460, a first pilot lamp 455, a first switch unit 465, and a second switch unit 470. It is assumed that the accessory 400 cannot contain a battery.

  The flash light emitting unit 430 includes a flash light source 431 and a charging unit 432. The flash light source 431 includes a known flash illumination light source such as a xenon tube.

  The charging unit 432 boosts the voltage supplied from the camera body 100, and the power required to cause the flash light source 431 to emit light based on the voltage boosted by the boosting circuit unit. Storage circuit unit (storage unit / capacitor / or capacitor). The charging unit 432 causes the flash light source 431 to emit light by supplying the power stored in the storage unit (storage circuit unit) to the flash light source 431.

  The charging unit 432 starts or stops charging the storage unit of the charging unit 432 according to a signal supplied from the accessory control unit 440. The charging unit 432 detects the amount of charge (charged amount, amount of charge) stored in the storage unit by detecting the voltage (charging voltage) between the electrodes of the storage unit during the charging process for charging the storage unit. be able to. The charging unit 432 supplies information indicating the detected charge amount of the storage unit to the accessory control unit 440.

  Note that the charging unit 432 includes a known light emission control circuit (for example, a circuit that controls the start / stop of light emission like a known IGBT), and the flash light source 431 is set according to a signal input from the accessory control unit 440. It is possible to emit light in synchronization with the photographing timing and to control the light emission amount of the flash light source 431.

  The illumination light emitting unit 435 includes an illumination light source driving unit 436 and an illumination light source 437. The illumination light source 437 of this embodiment includes a solid light source such as a light emitting diode (LED) capable of emitting continuous illumination light. The illumination light source drive unit 436 causes the illumination light source 437 to emit light by supplying a current to the illumination light source 437. Of course, the illumination light source 437 can emit not only continuous illumination light but also illumination light intermittently by intermittently supplying current by the illumination light source driving unit 436. The illumination light source driving unit 436 causes the illumination light source 437 to emit light in synchronization with the photographing timing under the control of the accessory control unit 440. The illumination light source driving unit 436 controls the time (lighting time) for causing the illumination light source 437 to emit light according to the signal input from the accessory control unit 440.

  Although not shown, the accessory 400 includes a first conduction switch that switches an electrical conduction state (ON / OFF) with respect to the power supply line 481 of the flash light emission unit 430 and an electrical connection with respect to the power supply line 481 of the illumination light emission unit 435. And a second continuity switch for switching the continuity state (ON / OFF). These first and second conduction switches are controlled by the accessory control unit 440. Therefore, when the camera system 1 performs imaging by causing the light emitting unit 425 to function, the accessory 400 is controlled by the accessory control unit 440 by controlling the first and second conduction switches and the flash light emitting unit 430 and the illumination light emitting unit 435. Alternatively, light can be emitted alternatively from the flash light emitting unit 430 or the illumination light emitting unit 435, or from both light emitting units.

  In the present embodiment, the maximum light emission amount of the flash light emitting unit 430 is larger than the maximum light emission amount of the illumination light light emitting unit 435. The flash light emitting unit 430 is turned on when a still image is captured, for example, and can illuminate the subject brighter than when the illumination light emitting unit 435 is turned on. In the present embodiment, the longest lighting time (longest lighting time) of the illumination light emitting unit 435 is longer than the longest lighting time of the flash light emitting unit 430. The illumination light emitting unit 435 is turned on, for example, when a moving image is captured, and can illuminate the subject for a longer time than the lighting time of the flash light emitting unit 430.

  In the present embodiment, the light emitted from the flash light emitting unit 430 may be referred to as flash light, and the function of the flash light emitting unit 430 emitting flash light may be referred to as a flash light emitting function. In addition, the light emitted from the illumination light emitting unit 435 may be referred to as illumination light, and the function of the illumination light emitting unit 435 emitting illumination light may be referred to as an illumination light emitting function.

  In the present embodiment, each of the first pilot lamp 455 (PL2) and the second pilot lamp 460 (PL1) includes a solid light source such as an LED. The first pilot lamp 455 is turned on according to the state of the flash light emitting unit 430 under the control of the accessory control unit 440. For example, the accessory control unit 440 turns on the first pilot lamp 455 when the flash light emitting unit 430 can emit light (when the charge storage unit is fully charged). Further, when the flash light emitting unit 430 cannot emit light (when the charge storage unit has insufficient charge), the accessory control unit 440 turns off the first pilot lamp 455. Similarly to the first pilot lamp 455, the second pilot lamp 460 is in a state where the illumination light emitting unit 435 can be turned on by the accessory control unit 440 (the above-described second conduction switch is in an ON state). Turns on or off.

  In the present embodiment, the first switch portion 465 (MSW) is mechanically interlocked with the locking claw 422 (see FIG. 4) described above. The first switch unit 465 closes or interrupts the circuit when the locking claw 422 moves in a predetermined direction (Z-axis direction). The first switch portion 465 closes the circuit when the tip of the locking claw 422 protrudes beyond a predetermined distance from the bottom portion 421 of the connector 420. That is, the first switch unit 465 closes the circuit when the accessory 400 is completely attached to the camera 10. On the other hand, the first switch portion 465 cuts off the circuit when the locking claw 422 is pushed toward the bottom portion 421 of the connector 420 by a predetermined amount or more.

  In the present embodiment, the second switch unit 470 (PCSW) is mechanically linked to the above-described second operation unit 471 (see FIG. 2). The second switch unit 470 closes or interrupts the circuit when the second operation unit 471 is operated.

  The first power supply unit (power supply unit 1) 450-1 includes a constant voltage circuit that stabilizes the voltage of the power supplied from the camera 10 (constant voltage control). The first power supply unit 450-1 can supply the power whose voltage is stabilized by the constant voltage circuit to the second power supply unit (power supply unit 2) 450-2 and the illumination light emitting unit 435. The first power supply unit 450-1 is connected to a reference potential line 480 (SGND). The second power supply unit 450-2 generates power for the accessory control unit 440 from the power supplied from the first power supply unit 450-1. The second power supply unit 450-2 is also connected to the reference potential line 480 (SGND).

  The storage unit 444 includes a nonvolatile memory 445. The nonvolatile memory 445 can hold information even when power is not supplied to the accessory 400. The nonvolatile memory 445 includes at least one of a memory that can rewrite stored data and a memory (for example, ROM) that cannot rewrite stored data. The nonvolatile memory 445 includes a program for operating the accessory control unit 440, information indicating the state of the accessory 400 (initial state and various accessory setting states currently set in the memory in the accessory control unit 440), camera Information such as information indicating the camera state (initial state and setting state) acquired from 10 is stored.

  The accessory control unit 440 includes a CPU that controls the operation of the components of the accessory 400 based on a program stored in the nonvolatile memory 445 and an electronic component such as an ASIC. The accessory control unit 440 communicates with the camera control unit 170 via the terminal unit 423 and the terminal unit 25. The accessory control unit 440 can send at least one piece of information included in the accessory initial state information or the accessory setting state information stored in the storage unit 444 to the camera control unit 170. In addition, the accessory control unit 440 causes the storage unit 444 to store information received from the camera control unit 170.

  The accessory initial state information includes accessory type information indicating the type of the accessory 400. The accessory type information includes battery presence / absence information indicating whether or not a battery is mounted on the accessory 400, function type information indicating the type of each function included in the accessory 400, and characteristic information indicating characteristics of each function included in the accessory 400. Including. The function type information includes information indicating the presence / absence of a flash light emission function, information indicating the presence / absence of an illumination light emission function, and information indicating the presence / absence of an extended function. The extended function is another function that does not correspond to either the flash light emission function or the illumination light emission function, such as a multi-light commander function, a GPS (Global Positioning System) function, a communication function with devices other than the camera body 100, and the like. . The characteristic information of the flash light emitting function includes information (profile information) indicating the light emission characteristics of the flash light emitting unit 430. The characteristic information of the illumination light emitting function includes information indicating the light emission characteristic of the illumination light emitting unit 435 (illumination profile information), and information indicating the longest time during which the illumination light emitting unit 435 can continuously emit light (longest lighting time). Including.

  The accessory setting state information includes information indicating whether the flash light emission function is on (valid) or off (invalid), and whether the illumination light emission function is on (valid) or off (invalid). Information indicating whether or not the current state is present.

  The accessory control unit 440 controls the components of the accessory 400 based on the control signal supplied from the camera control unit 170. The accessory control unit 440 performs light emission control for causing the flash light emission unit 430 or the illumination light emission unit 435 to emit light in accordance with the light emission control signal X supplied from the camera control unit 170. In the light emission control for causing the flash light emitting unit 430 to emit light, the accessory control unit 440 controls the charging unit 432 so that the flash light source 431 emits light in synchronization with the photographing timing on the camera side. In the light emission control for causing the illumination light emitting unit 435 to emit light, the accessory control unit 440 controls the illumination light source driving unit 436 so that the illumination light source 437 emits light in synchronization with the photographing timing.

  Here, with reference to FIG. 8, the control method of the charging part 432 by the accessory control part 440 is explained in full detail.

  FIG. 8 is a diagram illustrating timing for performing each process in the charge control. The accessory 400 according to the present embodiment does not include (built in) a power source (battery) for charging the storage unit (charge storage unit) of the charging unit 432, and performs charging with the power supplied from the camera 10. When the accessory control unit 440 receives from the camera control unit 170 a command (hereinafter referred to as a “charge command”) that instructs the storage unit (charge storage unit) to start charging, the accessory control unit 440 stores the storage unit (charge storage unit) in the charging unit 432. ) To start charging.

  Here, the charging operation performed by the charging unit 432 under the control of the accessory control unit 440 is roughly divided into two types. One is called “monitor charging operation”. The charging unit 432 is configured to be able to detect the amount of charge (charging voltage) in the storage unit during charging of the storage unit (charge storage unit). However, the charging unit 432 cannot detect the amount of charge of the storage unit at a desired point in time except during the charging of the storage unit (charge storage unit). Therefore, the accessory control unit 440 is configured to perform a “monitor charging operation” as a special charging operation for detecting the charge amount at a desired time of the storage unit. The accessory control unit 440 stops the monitor charging after a predetermined time has elapsed since the monitor charging was started. The charging time by this monitor charging is only very short (for example, about 10 ms).

  Another charging operation is a main charging operation (hereinafter referred to as “main charging”) that is performed in order to ensure the amount of charge necessary for causing the flash light source 431 to emit light. Normally, the charging time of the main charging operation is much longer than the charging time of the monitor charging operation described above. In other words, normally, the amount of charge stored in the storage unit (charge storage unit) during the main charging operation is much larger than the amount charged during the monitor charging operation. During the main charging, the charging unit 432 detects the charge amount (charge voltage) of the storage unit (charge storage unit) and supplies information indicating the charge amount to the accessory control unit 440. If the charge amount does not reach the predetermined amount (charge stop level described later) shown in FIG. 8, the accessory control unit 440 controls the charging unit 432 to continue the charging operation until the predetermined amount (charge stop level) is reached. To do. In the charging operation by the accessory control unit 440, the charge amount is set to a predetermined amount (charging stop level) unless a charge stop command for forcibly stopping the charging operation is transmitted from the camera control unit 170 to the accessory control unit 440. Continue until it reaches.

  By the way, in the present embodiment, the accessory control unit 440 performs a charging operation on the storage unit (charge storage unit) in the charging unit 432 (the above-described monitor) when the above-described “charge command” is not received from the camera control unit 170. The charging operation and the main charging operation) are not started. Therefore, the accessory control unit 440 issues a request (hereinafter referred to as “charge request”) to transmit a “charge command” to the camera control unit 170. This charge request includes a “monitor charge request” when requesting the above-mentioned monitor charge command to the camera 10 and a main charge request when requesting the above-mentioned main charge command from the camera 10 (this embodiment). These two types of charging requests are collectively referred to as “charging requests”). The “monitor charge request” is an initial communication sequence (details will be described later) performed between the camera control unit 170 and the accessory control unit 440 or a regular communication sequence (details) performed periodically (periodically) between the two. Is transmitted from the accessory control unit 440 to the camera control unit 170. On the other hand, the “main charge request” is obtained from the accessory control unit 440 when the charge amount falls below the “charge request level” shown in FIG. 8 as a result of the monitor charge described above or in a steady communication sequence performed immediately after the light emission operation. Is output.

  The accessory control unit 440 receives each “charge command” output from the camera control unit 170 in response to each “charge request” from the accessory 400 side, thereby causing the storage unit (charge storage unit) of the charging unit 432 to function. It becomes possible to charge.

  Here, a general charging sequence will be described with reference to FIG. The accessory control unit 440 sends a “monitor charge request” to the camera control unit 170 when the charging unit 432 is not in a charging operation (during an initial communication sequence or a steady communication sequence). Then, the accessory control unit 440 causes the charging unit 432 to start monitor charging in response to the “monitor charging command” output from the camera control unit 170 in response to the “monitor charging request” (time t1 in FIG. 8). The accessory control unit 440 acquires information indicating the charge amount detected by the charging unit 432 during the monitor charging (hereinafter referred to as “monitor charge amount”) from the charging unit 432. The accessory control unit 440 stops the monitor charging after a predetermined time (for example, 10 ms) has elapsed since the monitor charging was started.

  The accessory control unit 440 makes a determination regarding the charging state of the charging unit 432 based on information indicating the charging amount (monitor charging amount or main charging amount) detected by the charging unit 432. The accessory control unit 440 determines whether or not the charge amount is equal to or higher than the minimum charge amount necessary for causing the flash light source 431 to emit light (“light emission permission level” in FIG. 8). When the accessory control unit 440 determines that the monitor charge amount is equal to or higher than the light emission permission level, the accessory control unit 440 determines that the flash light emission unit 430 is in a state capable of emitting light (hereinafter referred to as “ready state”). When the accessory control unit 440 determines that the monitor charge amount is less than the light emission permission level, the accessory control unit 440 determines that the flash light emitting unit 430 is in a state incapable of emitting light. The accessory control unit 440 uses light emission propriety information indicating whether or not the flash light emitting unit 430 is in the “ready state” as one item of “charge state information” (details will be described later) indicating the charging state of the charging unit 432. The data is stored in the nonvolatile memory 445.

  Moreover, the accessory control part 440 is based on the information which shows the charge amount (monitor charge amount or this charge amount) which the charge part 432 detected (the charge request level in FIG. ]) It is determined whether or not the above is true. The “charge request level” is set to a level higher than the “light emission permission level”.

  When the accessory control unit 440 determines that the monitor charge amount is less than the charge request level, the camera control unit 440 receives a command for starting the main charge (hereinafter referred to as the main charge command) from the camera 10. A main charge request is output to 170. The accessory control unit 440 starts the main charging in response to the main charging command from the camera control unit 170 based on the main charging request (time t2 in FIG. 8). If the flash light emission function is set to be stopped, the accessory control unit 440 determines that the charge request is the camera control unit 170 even when the monitor charge amount is determined to be lower than the charge request level. Is not output.

  Moreover, the accessory control part 440 is more than the threshold value ("charge stop level" in FIG. 8) which the main charge amount was preset based on the information which shows the main charge amount which the charging part 432 detected during the main charge. Determine whether there is. The “charge stop level” is set in advance according to the maximum value of the amount of power that can be stored in the storage unit (charge storage unit), and is set to a level higher than the above-described “charge request level”. Yes. If the accessory control unit 440 determines that the main charge amount is equal to or higher than the charge completion level, the accessory control unit 440 controls the charging unit 432 to control the main charging of the storage unit (charge storage unit) without being controlled by the camera control unit 170. Is stopped (time t3 in FIG. 8).

  Note that when the accessory control unit 440 receives a command (hereinafter referred to as a “charge stop command”) requesting to stop charging the storage unit (charge storage unit) of the charging unit 432 from the camera control unit 170, According to the “charge stop command”, the charging unit 432 stops charging the storage unit (charge storage unit) even if the main charge amount is less than the charge stop level.

  As described above, in the camera system of the accessory 400 and the camera 10 according to the present embodiment, the camera 10 outputs a charge command in response to the “charge request” from the accessory 400 side, and the accessory 400 side receives the command to cause the accessory 400 side to It is designed to charge using the power received from the. As described above, when charging is performed on the accessory 400 side, the system configuration is such that the camera 10 side is always asked to obtain permission (charging control command) (charging permission). For this reason, for example, when a heavy load operation (for example, a lens driving operation) is performed on the camera 10 side, the accessory 400 side performs the main charging operation without permission, leading to excessive power consumption in the entire system. As a result, it is possible to suppress the possibility of inconvenience (such as camera operation stop) on the operation on the camera 10 side. Further, since the camera 10 side (camera control unit 170) does not need to check the accumulated charge amount of the storage unit on the accessory 400 side, it is only necessary to wait for a charge request from the accessory 400 side. The processing burden can be reduced. Also, on the accessory 400 side (accessory control unit 440), the camera 10 side can be charged (whether it is in heavy load operation) or not, and only according to the remaining amount of accumulated charge in the accumulation unit. Since it is only necessary to issue a “charge request” (the charge execution timing is determined by the camera 10 side), there is no need to issue a charge request while checking the load status on the camera 10 side. The processing burden on the unit 440 can be reduced.

  By the way, the amount of charge in the storage unit (charge storage unit) decreases with time due to leakage or the like after charging is stopped (after time t3 in FIG. 8). The accessory control unit 440 periodically sends a “monitor charge request” to the camera control unit 170 after stopping the charging. Then, the accessory control unit 440 periodically performs monitor charging on the charging unit 432 in accordance with a “monitor charging command” periodically output from the camera control unit 170 in response to the periodic “monitor charging request”. Make it.

  Moreover, the accessory control part 440 determines whether monitor charge amount is less than a charge request level based on the information which shows the charge amount which the charge part 432 detected during monitor charge. When the accessory control unit 440 determines that the monitor charge amount is less than the charge request level, the accessory control unit 440 sends a “main charge request” to the camera control unit 170 (time t4 in FIG. 8). Then, the accessory control unit 440 causes the charging unit 432 to perform the main charging in response to the “main charging command” output from the camera control unit 170 in response to the “main charging request” (time t5 in FIG. 8). .

  Further, when the flash light emitting unit 430 emits light (time t6 in FIG. 8), the charge amount of the storage unit (charge storage unit) may decrease below the light emission permission level. Therefore, the accessory control unit 440 sends a “main charge request” to the camera control unit 170 after the flash light emitting unit 430 emits light. Then, the accessory control unit 440 causes the charging unit 432 to perform main charging in response to a “main charging command” output from the camera control unit 170 in response to the “main charging request” after the light emission (in FIG. 8). Time t7).

  Note that the accessory control unit 440 determines that the camera control unit 170 is in a case where the charge amount of the storage unit (charge storage unit) is less than the light emission permission level, such as after the flash light emitting unit 430 emits light or after the accessory 400 is activated. Under this control, the charging unit 432 is charged at the first charging speed (from time t7 to time t8 in FIG. 8). Further, the accessory control unit 440, when the charge amount of the storage unit (charge storage unit) detected by the charging unit 432 is equal to or higher than the light emission permission level (t8 in FIG. 8), The charging unit 432 is charged at the second charging speed (after time t8 in FIG. 8). The second charging speed is set in advance to a charging speed that is slower than the first charging speed described above. In the present embodiment, the main charging operation performed at the first charging speed may be referred to as “normal charging”, and the main charging operation performed at the second charging speed may be referred to as “slow charging”.

  Further, the accessory control unit 440 sends “charge state information” indicating the control state of the control to the charging unit 432 to the camera control unit 170. The charging state information is a part of accessory setting state information stored in the storage unit 444.

  Here, the charge state information will be described. The charging state information includes “charging request information” indicating whether there is a “charging request”, “charging progress information” indicating whether the charging unit 432 is charging at that time (current), a charging unit “Charging availability information” indicating whether or not 432 can be charged, and “Lighting availability information” indicating whether or not the flash light emitting unit 430 is capable of emitting light (ready state described above).

  Here, the “chargeability information” will be described. Even if the charging command is received from the camera 10, the charging operation may not be performed depending on the state of the accessory 400 side. For example, when the temperature of the flash light emitting unit 430 rises due to the heat generated by the flash light emitting unit 430 on the accessory 400 side, the accessory control unit 440 may prohibit the charging operation in order to suppress the temperature rise due to further light emitting operation. is there. Alternatively, when a circuit unit such as a booster circuit in the charging unit 432 generates heat and exceeds a specified temperature, the accessory control unit 440 may prohibit the charging operation. Alternatively, when the charging operation by the charging unit 432 cannot be completed within a specified time and the charging process times out, the accessory control unit 440 may determine that some trouble has occurred in the charging unit 432 and prohibit the charging operation. As described above, when the accessory control unit 440 determines that the charging operation is prohibited, the information indicating “charge impossible (prohibited)” is set as “charge enable / disable information”, and when the charging operation is not prohibited, “charge” is performed. The accessory control unit 440 transmits the information indicating “possible” to the camera control unit 170 as “chargeable / unusable information”. Note that the charging request information, charging progress information, and light emission propriety information are as described above.

  Next, the terminal part 423 of the accessory 400 will be described. As shown in FIGS. 5 and 7, the terminal portion 423 is electrically connected to the terminal portion 25 of the camera 10 when the accessory 400 is attached to the camera 10. The terminal portion 423 includes a plurality (12) of terminals indicated by reference signs Ts1 to Ts12. Here, the numbers indicating the arrangement order of the terminals to be described next are numbers that increase in ascending order from one side (+ X side) to the other side (−X side) in the terminal arrangement direction (X-axis direction). To do.

  Each of the plurality of terminals Ts1 to Ts12 includes a linear (line shape) portion extending in a direction (+ Y direction) substantially parallel to the direction in which the camera is mounted (see FIG. 5). Then, in the contact portion (portion in contact with the terminal Tp7 in FIG. 9B) formed in the vicinity of the front end of the line shape (+ Y direction side), the corresponding terminals (Tp1 to Tp12 on the camera side). ) In physical contact and electrical connection (see the contact structure between the terminal Ts7 and the terminal Tp7 shown in FIG. 9B). Each of the terminals Ts1 to Ts12 has a leaf spring structure in which a contact portion formed in the vicinity of the distal end portion is urged in the −Z direction (direction pressed against each corresponding contact on the camera side) in the drawing. It has become.

  The function of each terminal in the terminal unit 423 is assigned as follows. Here, the terminals Ts1 to Ts12 of the terminal part 423 are provided corresponding to the terminals (Tp1 to Tp12) of the terminal part 25 on the camera 10 side described with reference to FIGS. . The functions of the terminals of the terminal unit 423 are also associated with the functions of the terminals of the terminal unit 25 described above. For this reason, in the description of the present embodiment, in order to avoid duplication with the description described above with respect to the terminal unit 25, the terminal numbers 1 to 12 of the terminals correspond to the terminals of the terminal unit 25 on the camera side. By describing the terminal numbers with the same number, the description overlapping with respect to the function and arrangement of each terminal is simplified or omitted.

  In the terminal portion 423, the power supply terminal Ts11 and the power supply terminal Ts12 are terminals to which power PWR is supplied from the camera 10, respectively. The ground terminal Ts1 and the ground terminal Ts2 are ground terminals corresponding to the power supply terminal Ts11 and the power supply terminal Ts12, and are terminals whose potential becomes the reference potential (ground) of the power PWR.

  Each of the reference potential terminal Ts3 and the reference potential terminal Ts5 is a terminal whose potential becomes a reference potential (signal ground) for transmitting and receiving signals.

  The synchronization signal terminal Ts4 is a terminal that outputs a synchronization signal (clock signal) CLK, which is a communication clock signal, to the camera 10.

  The communication signal terminal Ts6 is a terminal through which the communication signal DATA including the communication data on the camera side as described above is input from the camera 10 side, or the communication signal DATA on the accessory side is output to the camera 10. .

  The activation state providing terminal Ts7 is a terminal that provides the activation detection level DET (L level / reference potential based on SGND) described above to the camera 10.

  The light emission control signal terminal Ts8 is a terminal to which the above-described light emission control signal (light emission command signal) X is input from the camera 10.

  The communication control signal terminal Ts9 is a terminal to which the above-described communication control signal (communication activation signal) Cs is input from the camera 10.

  An open terminal Ts10 is disposed between the power supply terminal Ts11 and the communication control signal terminal Ts9.

  The arrangement of the terminals for these twelve terminals Ts1 to Ts12 corresponds to the terminals Tp1 to Tp12 of the terminal section 25 described above, and will be described briefly.

  The power supply terminal Ts11 and the power supply terminal Ts12 are arranged close to one end in the terminal arrangement of the terminal portion 423. The ground terminal Ts1 and the ground terminal Ts2 are arranged close to the other end (the end opposite to the side where the power supply terminal Ts11 and the power supply terminal Ts12 are arranged) in the terminal arrangement of the terminal portion 423. In other words, the ground terminal Ts1 and the ground terminal Ts2 are farther from the power supply terminals Ts11 and Ts12 than the communication terminals Ts3 to Ts9 (including the signal input terminals Ts6, Ts8, and Ts9 for inputting the various signals described above). It is arranged at the position (relatively far position).

  The open terminal Ts10 is arranged between the power supply terminal Ts11 and the communication control signal terminal Ts9 in the terminal arrangement of the terminal portion 423.

  The light emission control signal terminal Ts8 is disposed next to the activation state provision terminal Ts7 and is disposed so as to be sandwiched between the activation state provision terminal Ts7 and the communication control signal terminal Ts9.

  The communication signal terminal Ts6 is disposed next to the activation state providing terminal Ts7. Therefore, the activation state providing terminal Ts7 is disposed so as to be sandwiched between the communication signal terminal Ts6 and the light emission control signal terminal Ts8.

  The reference potential terminal Ts5 is disposed next to the communication signal terminal Ts6. Therefore, the communication signal terminal Ts6 is disposed so as to be sandwiched between the reference potential terminal Ts5 and the activation state providing terminal Ts7.

  The synchronization signal terminal Ts4 is disposed next to the reference potential terminal Ts5. The reference potential terminal Ts3 is disposed next to the synchronization signal terminal Ts4. Therefore, the synchronization signal terminal Ts4 is disposed so as to be sandwiched between the reference potential terminal Ts3 and the reference potential terminal Ts5. A ground terminal Ts2 is arranged next to the reference potential terminal Ts3 on the side opposite to the synchronization signal terminal Ts4. As described above, the power supply terminal Ts11 and the power supply terminal Ts12 are arranged close to one end in the terminal arrangement of the terminal portion 423, and the above-described communication system terminals Ts3 to Ts9 (input the above-described various signals). In other words, the signal input terminals Ts6, Ts8, and Ts9 are arranged on the other side opposite to the one side with respect to the power supply terminals Ts11 and Ts12.

  Next, with reference to FIG. 7, the connection relationship of each component in the accessory 400 is demonstrated.

  The ground terminal Ts1 and the ground terminal Ts2 are connected via a connection pattern shown in FIG. When the accessory 400 is connected to the camera 10, the ground terminal Ts1 and the ground terminal Ts2 are connected to the ground line 43 on the camera 10 side via the terminals Tp1 and Tp2 on the camera 10 side. The ground terminal Ts1 and the ground terminal Ts2 are ground terminals for a circuit (charging unit 432) that uses the power PWR on the accessory 400 side, and are terminals that serve as a reference potential of the supplied voltage on the accessory 400 side. In addition, it is a terminal that becomes a reference potential of the charging voltage.

  The power supply terminal Ts11 is connected to the power supply line 481. The power supply terminal Ts12 is connected to the power supply line 481 in parallel with the power supply terminal Ts11. The power line 481 is a relatively thick wiring pattern (a wiring directly connected to Ts11 on the circuit board so that a large current supplied from the camera 10 can flow through two power terminals (power terminals Ts11 and Ts12). A wiring pattern having a line width equal to or larger than the line width obtained by adding the line width of the pattern and the line width of the wiring pattern directly connected to Ts12). In addition, the wiring pattern connected to the accessory power supply control unit 33 on the camera 10 side is also a relatively thick wiring pattern, similar to the accessory 400 side.

  The reference potential terminal Ts3 and the reference potential terminal Ts5 are connected via a connection line as shown in FIG. The reference potential terminal Ts3 and the reference potential terminal Ts5 are connected in parallel to the reference potential line 480 (SGND). When the accessory 400 is connected to the camera 10, the reference potential line 480 is connected to the ground line (SGND) 42 on the camera 10 side via the reference potential terminals Ts3 and Ts5 and the terminals Tp3 and Tp5 on the camera 10 side. Connected. The reference potential terminal Ts3 and the reference potential terminal Ts5 are connected to each circuit in the accessory 400 (MSW 465, PCSW 470, nonvolatile memory 445, first power supply unit 450-1, second power supply unit 450-2, accessory control unit 440, illumination. In the light emitting unit 435), a terminal serving as a reference potential for transmitting and receiving signals.

  Note that the ground terminal Ts1 and the ground terminal Ts2 are also connected in parallel to the reference potential line 480 (SGND) via the connection line 490. However, the connection line connected to the ground terminal Ts1 and the ground terminal Ts2 (the line connected to the connection line 490) is more resistant (impedance) than the line connected to the connection line 490 and the reference potential terminals Ts3 and Ts5. Is a low line. For this reason, the large current that has flowed through the charging unit 432 does not flow to the SGND line (reference potential terminals Ts3, Ts5).

  The current flowing through the reference potential line 480 flows to the ground terminals Ts1 and Ts2 via the connection line 490, and the ground terminals Ts1 and Ts2 are the reference voltages supplied to the above circuits in the accessory 400. Can be. In addition, a so-called single-point ground (single-point ground) is adopted as the ground of the accessory 400 of the present embodiment.

  The activation state providing terminal Ts7 is connected to a first terminal of a switch 466 (shown in FIG. 9B) in the first switch unit 465 via a signal line. The second terminal of the switch 466 in the first switch unit 465 is connected to the first terminal of the switch 472 (shown in FIG. 9B) in the second switch unit 470. A second terminal of the switch 472 in the second switch unit 470 is connected to the reference potential line 480. Thus, the 2nd switch part 470 is connected in series with the 1st switch part 465 with respect to the signal wire | line connected to the starting state provision terminal Ts7.

  The synchronization signal terminal Ts4 is connected to the accessory control unit 440 via a signal line. The communication signal terminal Ts6 is connected to the accessory control unit 440 via a signal line. The signal line connected to the communication signal terminal Ts6 is provided with a pull-up resistor. This pull-up resistor is electrically connected to the output side of the second power supply unit 450-2. For this reason, the potential (level) at the communication signal terminal Ts6 is maintained at the H level before being attached to the camera 10 and before starting communication with the camera 10.

  The communication control signal terminal Ts9 is connected to the accessory control unit 440 via a signal line. The signal line connected to the communication control signal terminal Ts9 is provided with a pull-up resistor. This pull-up resistor is electrically connected to the output side of the second power supply unit 450-2. Therefore, the potential (level) at the communication signal terminal Ts6 is maintained at the H level before being attached to the camera 10 and before starting communication with the camera 10.

  The light emission control signal terminal Ts8 is connected to the accessory control unit 440 via a signal line. The signal line connected to the light emission control signal terminal Ts8 is provided with a pull-up resistor. This pull-up resistor is electrically connected to the output side of the second power supply unit 450-2. Therefore, the potential (level) at the communication signal terminal Ts6 is maintained at the H level before being attached to the camera 10 and before starting communication with the camera 10.

  The open terminal Ts10 is a so-called open terminal that is not connected to either the power supply system or the signal system. The open terminal Ts10 is insulated from circuits such as the accessory control unit 440, the power supply line 481, and the reference potential line 480.

  The first electrode for main discharge in the flash light source 431 of the flash light emitting unit 430 is connected to the charging unit 432. The second electrode for main discharge is connected to the power supply line 481. A power supply terminal of the charging unit 432 is connected to the power supply line 481. The ground terminal of the charging unit 432 is connected to a ground line connected to the ground terminal Ts1.

The power supply terminal of the illumination light source drive unit 436 is connected to the first power supply unit 450-1. The ground terminal of the illumination light source driving unit 436 is connected to the reference potential line 480. A control terminal of the illumination light source driving unit 436 is connected to the accessory control unit 440 via a signal line.
In the illumination light source 437, the anode of the solid light source is connected to the illumination light source driving unit 436, and the cathode of the solid light source is connected to the reference potential line 480.

  One end of each of the first pilot lamp 455 and the second pilot lamp 460 is electrically connected to the output side of the second power supply unit (power supply unit 2) 450-2. The other end of the first pilot lamp (PL2) 455 is connected to the accessory control unit 440 via a signal line. The other end of the second pilot lamp (PL1) 460 is connected to the accessory control unit 440 via a signal line different from that of the first pilot lamp 455.

  The input terminal of the first power supply unit (power supply unit 1) 450-1 is connected to the power supply line 481. The ground terminal of the first power supply unit 450-1 is connected to the reference potential line 480. The output terminal of the first power supply unit 450-1 is connected to the input terminal of the second power supply unit (power supply unit 2) 450-2 and the illumination light source drive unit 436. The output terminal of the second power supply unit 450-2 is connected to the power supply terminal of the accessory control unit 440. The ground terminal of the second power supply unit 450-2 is connected to the reference potential line 480.

  Next, the connection relationship between the camera 10 and the accessory 400 will be described. In a state where the accessory 400 is mounted on the camera 10 (hereinafter referred to as a mounted state), the ground terminal Ts1 is connected to the ground terminal Tp1 of the camera 10. The ground terminal Ts2 is connected to the ground terminal Tp2 of the camera 10 in the mounted state. And the place (grounding terminal of the charging part 432) connected to the grounding terminals Ts1 and Ts2 on the accessory 400 side is a path through the grounding terminal Tp1 and the grounding terminal Ts1, and the grounding terminal Tp2 and the grounding terminal in the mounted state. It is connected to the ground line 43 and connected to the negative electrode of the battery BAT via at least one of the paths via Ts2. Therefore, the potentials of the ground terminals Ts1 and Ts2 and the locations connected to them are reference potentials corresponding to the potential of the negative electrode of the battery BAT in the mounted state.

  The power supply terminal Ts11 is connected to the power supply terminal Tp11 of the camera 10 in the mounted state. The power supply terminal Ts12 is connected to the power supply terminal Tp12 of the camera 10 in the mounted state. In the mounted state, the accessory power supply control unit 33 is connected to the power supply line 481 via at least one of the path via the power supply terminal Tp11 and the power supply terminal Ts11 and the path via the power supply terminal Tp12 and the power supply terminal Ts12. Is done. Therefore, the accessory power supply control unit 33 supplies the power PWR supplied from the battery BAT to the accessory power supply control unit 33 to each circuit or electrical component in the accessory 400 via the power supply line 481 according to the control of the camera control unit 170. can do.

  The reference potential terminal Ts3 is connected to the reference potential terminal Tp3 of the camera 10 in the mounted state. The reference potential terminal Ts5 is connected to the reference potential terminal Tp5 of the camera 10 in the mounted state. The potential of the reference potential terminal Ts3 becomes the potential (reference potential) of the reference potential terminal Tp3 in the mounted state. The potential of the reference potential terminal Ts5 becomes the potential (reference potential) of the reference potential terminal Tp5 in the mounted state.

  As shown in FIG. 4, the ground terminal Tp1, the ground terminal Tp2, and the reference potential terminal Tp3 are longer in the slide movement direction (+ Y-axis direction) than the other terminals. Therefore, when the accessory 400 is attached to the camera 10 in the present embodiment, the three terminals of the ground terminal Tp1, the ground terminal Tp2, and the reference potential terminal Tp3 correspond to the terminal portion 423 of the accessory 400 before the other terminals. Contact with each terminal (ground terminal Ts1, ground terminal Ts2, reference potential terminal Ts3).

  The activation state providing terminal Ts7 is grounded via the reference potential line 480 when the accessory 400 is attached to the camera 10 and the second switch unit 470 closes the circuit (ON state). Connected to line 42. Therefore, the camera control unit 170 detects that the first switch is in the first state when the second switch unit 470 is in the on state and connected to the camera 10 (hereinafter referred to as the first state). The level DET (SGND level / reference potential level / Low level / L level) can be detected via the activation state providing terminal Ts7 and the activation state detection terminal Tp7. Further, the camera control unit 170 can detect the activation detection level DET that is electrically different from the first state in the following second state. The second state includes one of a state in which the second switch unit 470 is off and the camera 10 is mounted, and a state in which the accessory 400 is not mounted on the camera 10.

  The synchronization signal terminal Ts4 is connected to the synchronization signal terminal Tp4 of the camera 10 in the mounted state. That is, the accessory control unit 440 is connected to the camera control unit 170 through the synchronization signal terminal Tp4 and the synchronization signal terminal Ts4 in the mounted state. Thereby, the accessory control part 440 can transmit the synchronous signal CLK for performing synchronous communication with the camera control part 170 to the camera control part 170 via the synchronous signal terminal Ts4 and the synchronous signal terminal Tp4. In addition, the camera control unit 170 can transmit a monitor light emission control signal that causes the accessory 400 to execute the following monitor light emission to the accessory control unit 440 via the synchronization signal terminal Ts4 and the synchronization signal terminal Tp4.

  The monitor light emission is light emission performed before the main light emission used for the main imaging. The result of imaging (monitor imaging) by monitor light emission is used for at least one of white balance adjustment such as auto white balance (AWB) control and exposure control such as auto exposure (AE) control.

  The communication signal terminal Ts6 is connected to the communication signal terminal Tp6 of the camera 10 in the mounted state. That is, the accessory control unit 440 is connected to the camera control unit 170 through the communication signal terminal Tp6 and the communication signal terminal Ts6 in the mounted state. Therefore, the camera control unit 170 and the accessory control unit 440 can perform serial data communication via the communication signal terminal Tp6 and the communication signal terminal Ts6 in the mounted state. The communication signal terminals Tp6 and Ts6 can both switch input / output functions, and communication between these terminals is bidirectional communication in which the communication direction can be switched. The data communicated as the communication signal DATA is as follows. The data output from the camera 10 includes a command (command) that causes the accessory 400 to execute processing by the camera control unit 170, information about the camera 10 (camera data), and the like. On the other hand, the data output from the accessory 400 side includes information on the accessory 400 (accessory information). In the present embodiment, sending (or receiving) data indicating a command or information may be simply sending (or receiving) a command or information. Note that the communication signal DATA is transmitted in synchronization with the synchronization signal CLK output from the accessory 400 side regardless of whether the camera control unit 170 transmits or the accessory control unit 440 transmits.

  For example, the camera control unit 170 transmits to the accessory control unit 440 a transmission notification command (command) for notifying that information on the designated item is transmitted from the camera control unit 170 to the accessory control unit 440. After transmission of the transmission notification command is completed, the camera control unit 170 transmits information on items specified in the transmission notification command to the accessory control unit 440 after a transmission of the transmission notification command with a predetermined time interval.

  For example, the camera control unit 170 can transmit a transmission request command for requesting transmission of designated information from the accessory control unit 440 to the camera control unit 170 to the accessory control unit 440. After the reception of the transmission request command is completed, the accessory control unit 440 transmits information on items specified in the transmission notification command to the camera control unit 170 following reception of the transmission notification command.

The communication control signal terminal Ts9 is connected to the communication control signal terminal Tp9 of the camera 10 in the mounted state. That is, the accessory control unit 440 is connected to the camera control unit 170 through the communication control signal terminal Tp9 and the communication control signal terminal Ts9 in the mounted state.
Therefore, the camera control unit 170 can supply the communication control signal Cs to the accessory control unit 440 via the communication control signal terminal Tp9 and the communication control signal terminal Ts9.

  When information such as the “charge request” described above is transmitted from the accessory 400 side to the camera 10 side, the accessory control unit 440 receives the communication control signal Cs received from the camera 10 side at the communication control signal terminal Ts9. Information is transmitted to the camera control unit 170 in a steady communication sequence (described later) that is started as a trigger.

  This communication control signal Cs is a signal that determines the communication start timing of communication between the camera 10 and the accessory 400 via the communication signal terminal Ts6. On the accessory 400 side, a pull-up resistor is connected to the wiring pattern connected to the communication control signal terminal Ts9. For this reason, the signal level of the communication control signal Cs at the communication signal terminal Ts6 is maintained at the H level before the start of communication. The signal level of the communication control signal Cs is lowered to the L level and maintained by the camera control unit 170 when starting data communication via the communication signal terminal Ts6. While the signal level of the communication control signal Cs is maintained at the L level, data of a plurality of bits is transmitted / received as the communication signal DATA in synchronization with the synchronization signal CLK. After a plurality of bits of data are transmitted / received, the signal level of the communication control signal Cs is maintained at the H level again by the pull-up resistor in the period until the next transmission of the communication signal DATA. As described above, the communication control signal Cs is a signal in which the number of switching of the signal level (H level and L level) per unit time is smaller than that of the communication signal DATA and the synchronization signal CLK.

The light emission control signal terminal Ts8 is connected to the light emission control signal terminal Tp8 of the camera 10 in the mounted state. That is, the accessory control unit 440 is connected to the camera control unit 170 through the light emission control signal terminal Tp8 and the light emission control signal terminal Ts8 in the mounted state.
Therefore, the camera control unit 170 sends the light emission control signal X that causes the accessory 400 to perform light emission (main light emission) in synchronization with the photographing timing via the light emission control signal terminal Ts8 and the light emission control signal terminal Tp8. Can be supplied to. The accessory control unit 440 performs light emission control according to the light emission control signal X.

Charging unit 432 includes a booster circuit that boosts the voltage of power supplied via power supply line 481 and a storage unit (charge storage unit) that is charged by the voltage boosted by the booster circuit. In addition, the charging unit 432 is connected to the accessory control unit 440 through the first signal line.
The accessory control unit 440 can supply a signal for controlling the charging unit 432 to the charging unit 432 via the first signal line. The charging unit 432 is connected to the accessory control unit 440 via the second signal line. The charging unit 432 can supply information indicating the amount of charge of the charging unit 432 to the accessory control unit 440 via the second signal line.

  The accessory control unit 440 supplies a signal for controlling the illumination light source driving unit 436 to the illumination light source driving unit 436 through a signal line. Therefore, the illumination light source 437 can emit light by power supplied via the power line 481 and the illumination light source driving unit 436.

  The lighting state of each of the first pilot lamp 455 and the second pilot lamp 460 is controlled by a control signal supplied from the accessory control unit 440 via a signal line. The first pilot lamp 455 is turned on, for example, in a state where the light emission of the flash light emitting unit 430 is permitted by the accessory control unit 440. The first pilot lamp 455 is turned off, for example, in a state where the flash light emitting unit 430 cannot emit light. Similar to the first pilot lamp 455, the second pilot lamp 460 is turned on or off according to the state of the illumination light emitting unit 435 under the control of the accessory control unit 440.

  The first power supply unit 450-1 stabilizes the voltage input to the input terminal of the first power supply unit 450-1 based on the power supplied from the power supply line 481 and supplies it to the subsequent circuit. Based on the electric power supplied from the first power supply unit 450-1, the second power supply unit 450-2 stabilizes the voltage input to the input terminal of the second power supply unit 450-2 and supplies it to the subsequent circuit.

  Next, the level switching unit 475 will be described.

  FIG. 9 is a diagram schematically illustrating a connection relationship between the activation state detection terminal Tp7 and the camera control unit 170. FIG. 9A shows a connection relationship between the activation state detection terminal Tp7 and the camera control unit 170 in association with a cross-sectional view of the shoe seat 15. FIG. 9B shows the configuration and connection relationship of the level switching unit 475 in association with the cross-sectional view of the connector 420.

  As shown in FIG. 9A, a voltage is applied via a pull-up resistor 482 to the activation state detection terminal Tp7 connected to the camera control unit 170. In a state where the activation state detection terminal Tp7 is not connected to the activation state provision terminal Ts7 of the accessory 400, the potential of the activation state detection terminal Tp7, that is, the activation detection level DET is H (high) level. The H level is set to a potential higher than the reference potential SGND of the ground line 42, for example.

  The accessory 400 of this embodiment includes a level switching unit 475. As shown in FIG. 9B, the level switching unit 475 includes a first switch unit 465, a second switch unit 470, a first operation unit 424, and a second operation unit 471.

  The first switch unit 465 switches the state according to the attachment / detachment of the camera body 100 and the accessory 400. The first switch unit 465 includes a movable member (locking claw 422) and a switch 466 (electric switch) that is interlocked with the movement of the locking claw 422. The locking claw 422 moves in a predetermined direction (+ Z side in the Z-axis direction) by a force received from the camera body 100 when the accessory 400 is attached to the camera body 100. The switch 466 closes or shuts off the circuit in conjunction with the movement of the locking claw 422. When the connector 420 is inserted to a predetermined position on the shoe seat 15, the locking claw 422 of the connector 420 protrudes into the locking hole 27 of the shoe seat 15, whereby the switch 466 of the first switch portion 465 is moved as shown in FIG. The circuit of B) is closed. Further, when the accessory 400 is attached to the camera body 100, the locking claw 422 restricts the movement of the accessory 400 relative to the camera body 100 by being locked to the camera body 100.

  Further, when the first switch unit 465 is detached from the first operation unit 424 (operation for removing the connector 420 from the shoe seat 15), the latching claw 422 is moved in the Z-axis direction by the operation. Then, it is pushed from the inside of the locking hole 27 toward the accessory main body 410, whereby the switch 466 blocks the circuit of FIG. 9B (opens the circuit).

  The second switch unit 470 switches the level of the activation detection level DET when operated by the user. The second switch unit 470 includes a second operation unit 471 and a switch 472 (electric switch).

  The second switch unit 470 is a circuit shown in FIG. 9B by a switch 472 that is linked to the movement of the second operation unit 471 in response to a user performing a function ON operation or a function OFF operation on the second operation unit 471. Is closed (closed) or shut off (opened) (closed by function ON operation, opened by function OFF operation).

  The first operation unit 424 is operated by the user in order to move the locking claw 422 in a predetermined direction. The first operation unit 424 moves the locking claw 422 in a predetermined direction (Z-axis direction) by transmitting the force received by the user's operation to the locking claw 422. When the first operation unit 424 is operated with the accessory 400 mounted on the camera body 100, the locking claw 422 moves in the Z-axis direction and faces the accessory body 410 from the inside of the locking hole 27. And leave. As a result, the accessory 400 is released from the camera body 100 and can be removed from the camera body 100, and the first switch unit 465 blocks the circuit.

  When the switch 466 closes the circuit and the switch 472 closes the circuit (the “ON” position), the activation state providing terminal Ts7 of the accessory 400 is connected to the switch 466 and the switch 472. To the reference potential line 480 described above. When the connector 420 is connected to the shoe seat 15, the reference potential line 480 is electrically connected to the ground line (SGND / signal ground) 42 of the camera body 100 as described above.

  In a state where the connector 420 is connected to the shoe seat 15 (mounted state), the activation state providing terminal Ts7 of the accessory 400 is electrically connected to the ground line 42 of the camera body 100, and the potential of the activation state providing terminal Ts7 is L (Low) level. In a state where the connector 420 is connected to the shoe seat 15, the activation detection level DET becomes L level when the potential of the activation state detection terminal Tp7 of the camera body 100 is short-circuited with the activation state providing terminal Ts7 of the accessory 400. The L level is set to the same potential as the ground line 42 (reference potential SGND). When the first operation unit 424 is operated in a state where the connector 420 is connected to the shoe seat 15, the activation detection level DET becomes the H level because the first switch unit 465 cuts off the circuit. In addition, the activation detection level DET is H because the switch 472 shuts off the circuit even when the second operation unit 471 of the second switch unit 470 is turned off while the connector 420 is connected to the shoe seat 15. Become a level. That is, when the accessory 400 is attached to the camera 10, even if an operation for removing the connector 420 from the shoe seat 15 is performed on the first operation unit 424, or the function is off for the second operation unit 471. The activation detection level DET is at the H level regardless of whether the operation is performed.

  By the way, in general, when a short circuit occurs due to dust or the like adhering between terminals of an accessory or a camera terminal part, the camera system is stabilized due to an unexpected current flowing between the shorted terminals. May not work. Further, the camera system may not operate stably due to the influence of noise (electrical noise) on the signal supplied via the terminal between the camera and the accessory. For example, the camera system may not be stably operated, and may not respond to user operations or may be slow to respond, which may reduce convenience.

  On the other hand, as shown in FIGS. 5 and 7, the accessory 400 of the present embodiment has a terminal arrangement of the terminal portion 423 as follows. The power supply terminal Ts11 and the power supply terminal Ts12 to which power is supplied from the camera 10 are arranged at the 11th and 12th positions, respectively. The ground terminal Ts1 and the ground terminal Ts2 corresponding to the power supply terminal Ts11 and the power supply terminal Ts12 are arranged at the first and second, respectively. The activation state providing terminal Ts7 that outputs the activation detection level DET that changes in accordance with the attachment / detachment of the camera 10 and the accessory 400 to the camera 10 is arranged seventh. The light emission control signal terminal Ts8 to which the light emission control signal X for controlling the light emission state of the flash light emitting unit 430 or the illumination light light emitting unit 435 is input from the camera 10 is arranged in the eighth. A communication signal terminal Tp6 to which a control signal for controlling the accessory 400 is supplied as a communication signal DATA for communicating with the camera 10 is arranged sixth. A synchronization signal terminal Ts4 that outputs a synchronization signal CLK synchronized with the communication signal DATA to the camera 10 is arranged fourth. The communication control signal terminal Ts9 to which the communication control signal Cs for determining the communication timing of communication with the camera 10 accessory 400 is input from the camera 10 is arranged ninth. The reference potential terminal Ts3 and the reference potential terminal Ts5 become the reference potentials of the activation detection level DET, the communication signal DATA, the synchronization signal CLK, the light emission control signal X, and the communication control signal Cs, respectively. Has been placed.

That is, the power supply terminal Ts11 and the power supply terminal Ts12 are arranged so as to be biased toward one side in the terminal arrangement direction, and the ground terminal Ts1 and the ground terminal Ts2 are arranged so as to be biased toward the other side in the terminal arrangement direction. Yes. Therefore, in the camera system 1, since the power supply terminals (the power supply terminal Ts11 and the power supply terminal Ts12) and the ground terminals (the ground terminal Ts1 and the ground terminal Ts2) are largely separated from each other, occurrence of a short circuit between them is suppressed. The occurrence of problems such as response stoppage due to a short circuit between the power supply terminal and the ground terminal can be suppressed, and electrical safety can be maintained.
Further, the accessory 400 has a high degree of freedom in designing the power supply line 481 connected to the power supply terminal Ts11 and the power supply terminal Ts12 or the reference potential line 480 connected to the ground terminal Ts1 and the ground terminal Ts2 inside the accessory 400. . In addition, the arrangement of the plurality of power supply terminals can be facilitated by arranging the plurality of power supply terminals side by side by arranging them closer to the end of the arrangement rather than arranging them between the plurality of terminals. As a result, for example, the accessory 400 can easily increase the width of the power supply line 481 and the reference potential line 480, for example, make the power supply line 481 and the reference potential line 480 low resistance, and the power supply line 481 and the reference potential. High power can be supplied via the line 480. In the present embodiment, as is apparent from the fact that the resistance can be reduced as described above, it is possible to suppress the heat generation at the contact portion, and as a result, it is possible to suppress the occurrence of defects such as deformation due to the heat generation at the contact portion. it can.

  Further, the communication signal terminal Ts6 to which the communication signal DATA indicating information necessary for imaging is supplied is disposed adjacent to the reference potential terminal Ts5 to which the reference potential is supplied. Therefore, the communication signal DATA is less susceptible to noise from the side opposite to the communication signal terminal Ts6 with respect to the reference potential terminal Ts5. Further, the communication signal terminal Ts6 is disposed adjacent to the activation state providing terminal Ts7 on the side opposite to the reference potential terminal Ts5 with respect to the communication signal terminal Ts6. The activation detection level DET is maintained at the L level in a state where the camera 10 and the accessory 400 can communicate with each other. Therefore, the communication signal DATA is less susceptible to noise from the side opposite to the communication signal terminal Ts6 with respect to the activation state providing terminal Ts7 in a state where the camera 10 and the accessory 400 can communicate with each other. As described above, since the communication signal DATA is less affected by noise, the camera system 1 maintains communication safety and suppresses malfunctions such as malfunction caused by the communication signal DATA being affected by noise. be able to.

  The light emission control signal terminal Ts8 is disposed adjacent to the activation state providing terminal Ts7. The activation detection level DET is maintained at the L level when the camera 10 and the accessory 400 can communicate with each other. Therefore, the light emission control signal X is less susceptible to noise from the side opposite to the activation state providing terminal Ts7 with respect to the light emission control signal terminal Ts8. The light emission control signal terminal Ts8 is adjacent to the communication control signal terminal Ts9 on the side opposite to the activation state providing terminal Ts7 with respect to the light emission control signal terminal Ts8. The communication control signal Cs is maintained at the L level during a period in which a plurality of bits of data is communicated in synchronization with the synchronization signal CLK, and the communication from the end of the data communication to the start of the next data communication. In the period, it is maintained at the H level. In this way, the communication control signal Cs has a lower signal level switching frequency than both the synchronization signal CLK and the communication signal DATA. Thus, the light emission control signal X is less susceptible to noise from the side opposite to the communication control signal terminal Ts9 with respect to the light emission control signal terminal Ts8. Thus, the camera system 1 is less susceptible to noise from the light emission control signal X, so that communication safety is maintained, and malfunction due to the light emission control signal X being affected by noise (error light emission operation). The occurrence of defects such as these can be suppressed.

The activation state providing terminal Ts7 is arranged adjacent to the communication signal terminal Ts6.
The communication signal DATA is maintained at the H level when the camera control unit 170 is not transmitting or receiving data. Therefore, when the activation state providing terminal Ts7 is short-circuited with the communication signal terminal Ts6, the activation detection level DET becomes the H level, and the camera control unit 170 determines that the accessory 400 is not attached. Therefore, when the accessory 400 is in an off state, the camera system 1 can detect that the accessory 400 is in an on state and suppress a malfunction. The activation state providing terminal Ts7 is arranged adjacent to the light emission control signal terminal Ts8. The light emission control signal X is maintained at the H level when the camera control unit 170 does not cause the light emitting unit 425 to emit light, and becomes the L level when the camera control unit 170 causes the light emitting unit 425 to emit light. Therefore, when the activation state providing terminal Ts7 is short-circuited with the light emission control signal terminal Ts8, the activation detection level becomes the H level, and the camera control unit 170 determines that the accessory 400 is not attached. Therefore, when the accessory 400 is in an off state, the camera system 1 can detect that the accessory 400 is in an on state and suppress a malfunction, and the electrical safety is high. When the accessory 400 is removed from the camera 10, the terminal Tp6 is also maintained at the H level by the pull-up resistor on the camera body 100 side as described above, and the terminal Tp8 is normally (transmits a light emission signal). (Except when) is at the H level. For this reason, even if the exposed terminal Tp7 on the camera body 100 side is short-circuited to the adjacent terminal (Tp6 or Tp8) due to dust or the like, the camera body 100 is erroneously determined (the accessory is attached and is in the activated state). There is no misjudgment).

  In the present embodiment, the synchronization signal terminal Ts4 is disposed adjacent to the reference potential terminal Ts5 to which the reference potential is supplied. Therefore, the synchronization signal CLK is less susceptible to disturbance (such as noise) from the side opposite to the synchronization signal terminal Ts4 (terminal Ts6 side) with respect to the reference potential terminal Ts5. Further, the synchronization signal terminal Ts4 is disposed adjacent to the reference potential terminal Ts3 to which the reference potential is supplied, on the side opposite to the reference potential terminal Ts5 with respect to the synchronization signal terminal Ts4. Therefore, the synchronization signal CLK is less susceptible to disturbance (such as noise) from the side opposite to the synchronization signal terminal Ts4 (the ground terminal Ts2 side) with respect to the reference potential terminal Ts3. Further, the terminal arranged on the opposite side of the reference potential terminal Ts3 from the synchronization signal terminal Ts4 is the ground terminal Ts2, and the potential of the ground terminal Ts2 is substantially the same as the reference potential, so that the synchronization signal CLK Is less susceptible to noise. In this way, the camera system 1 is less susceptible to noise from the synchronization signal CLK, so that communication safety is maintained, and malfunctions caused by the synchronization signal CLK being a communication reference signal being affected by noise. The occurrence of defects can be suppressed.

  Further, the level switching unit 475 switches the state (electrical level) of the activation detection level DET according to an operation of removing the accessory 400 from the camera 10 or a function off operation. Therefore, the camera 10 can control the accessory 400 according to the removal operation and function off operation of the accessory 400, and can control the accessory 400 stably. In the camera system 1, for example, the camera control unit 170 detects that the accessory 400 is attached to the camera 10 and the function is turned on, and the camera control unit 170 controls the accessory 400 based on the detection result. Since it can be started, the time from when the accessory 400 is mounted until it can function can be shortened.

  In the camera system 1, the open terminal Ts10 is disposed between the power supply terminal group (Ts11, Ts12) and the communication and detection terminal group (also referred to as Ts4, Ts6 to Ts9 / communication terminal group). The possibility that an electrical disturbance (noise, etc.) from the power source adversely affects the communication terminal group can be reduced. In this embodiment, the open terminal Ts10 is intentionally arranged. However, by providing this terminal Ts10, 12 terminals (compared to a configuration in which no terminal is present at this position without the open terminal Ts10) are provided. In the whole terminal, the contact force (contact pressure) between each corresponding counterpart terminal can be made uniform. As described above, the open terminal Ts10 is a terminal that is preliminarily provided for future function expansion and is not connected in a circuit. For this reason, the terminal Ts10 does not function at all in the present embodiment. For this reason, even if the accessory 400 does not include the open terminal Ts10, the accessory 400 and the camera system do not stop (function). For this reason, for example, in order to reduce the number of parts, the open terminal Ts10 may be omitted on the accessory 400 side. The same applies to the camera body 100 side.

As shown in FIG. 4, the ground terminal Tp1, the ground terminal Tp2, and the reference potential terminal Tp3 of the terminal portion 25 in the shoe seat 15 are in the direction (-Y side) that enters when the connector 420 is attached. It protrudes from the terminals represented by the symbols Tp4 to Tp12.
As a result, the ground terminal Tp1, the ground terminal Tp2, and the reference potential terminal Tp3 are connected to the ground terminal Tp1, the ground terminal Tp2, and the reference potential terminal Tp3 of the connector 420 before any of the terminals represented by the symbols Tp4 to Tp12, respectively. Will be. As a result, the activation state providing terminal Ts7 of the accessory 400 can stably output the activation detection level DET in a state where the accessory 400 is attached to the camera body 100.

  As described above, the accessory 400 can suppress the occurrence of malfunction, and can improve the convenience of the camera system 1. Further, since the camera 10, the shoe seat 15, and the connector 420 all have the terminal arrangement as described above, the convenience of the camera system 1 can be enhanced.

  One of the power supply terminal Tp11 and the power supply terminal Tp12 may be omitted. Thereby, the number of parts can be reduced. Further, for example, an open terminal may be provided instead of one of the power supply terminal Tp11 and the power supply terminal Tp12. The power supply terminal Tp11 and the power supply terminal Tp12 may be integrated. Similarly to the power supply terminal Tp11 and the power supply terminal Tp12, one of the ground terminal Tp1 and the ground terminal Tp2 may be omitted. Thereby, the number of parts can be reduced. Further, for example, an open terminal may be arranged instead of one of the ground terminal Tp1 and the ground terminal Tp2. The ground terminal Tp1 and the ground terminal Tp2 may be integrated. Further, terminals arranged between a power supply terminal including at least one of the power supply terminal Tp11 and the power supply terminal Tp12 and a ground terminal including at least one of the ground terminal Tp1 and the ground terminal Tp2 are denoted by reference numerals Tp3 to Tp10. One of the terminals, two or more, or all of the terminals may be used.

  In addition, as a structure arrange | positioned so that the light emission control signal terminal Tp8 may be pinched | interposed into the starting state detection terminal Tp7 and the communication control signal terminal Tp9, an integer greater than or equal to 2 is set to L, and the starting state in the terminal arrangement | sequence of the terminal part 25 is shown. There is a configuration in which the detection terminal Tp7 is arranged at the (L-1) th, the light emission control signal terminal Tp8 is arranged at the Lth, and the communication control signal terminal Tp9 is arranged at the (L + 1) th. . For example, when L is 6, in the terminal arrangement of the terminal portion, the activation state detection terminal Tp7 is arranged fifth, the light emission control signal terminal Tp8 is arranged sixth, and the communication control signal terminal Tp9 is seventh. Be placed.

  In addition, as a structure arrange | positioned so that communication signal terminal Tp6 may be pinched | interposed by the starting state detection terminal Tp7 and the light emission control signal terminal Tp8, in the terminal arrangement | sequence of the terminal part 25, an integer more than 2 is set to M. There is a configuration in which Tp6 is arranged in the (M−1) th, the activation state detection terminal Tp7 is arranged in the Mth, and the light emission control signal terminal Tp8 is arranged in the (M + 1) th. For example, when M is 4, in the terminal arrangement of the terminal unit, the communication signal terminal Tp6 is arranged third, the activation state detection terminal Tp7 is arranged fourth, and the light emission control signal terminal Tp8 is arranged fifth. Will be.

  Note that, as a configuration in which the communication signal terminal Tp6 is sandwiched between the reference potential terminal Tp5 and the activation state detection terminal Tp7, an integer of 2 or more is N, and the reference potential terminal Tp5 in the terminal arrangement of the terminal portion 25 is used. Is arranged at the (N−1) th, the communication signal terminal Tp6 is arranged at the Nth, and the activation state detection terminal Tp7 is arranged at the (N + 1) th. For example, when N is 8, in the terminal arrangement of the terminal portion, the reference potential terminal Tp5 is arranged seventh, the communication signal terminal Tp6 is arranged eighth, and the activation state detection terminal Tp7 is arranged ninth. Will be.

  As a configuration in which the synchronization signal terminal Tp4 is disposed between the reference potential terminal Tp3 and the reference potential terminal Tp5, an integer of 2 or more is P, and the reference potential terminal Tp3 in the terminal arrangement of the terminal portion 25 is There is a configuration in which the (P-1) th is arranged, the synchronization signal terminal Tp4 is arranged in the Pth, and the reference potential terminal Tp5 is arranged in the (P + 1) th. For example, when P is 6, in the terminal arrangement of the terminal portion, the reference potential terminal Tp3 is arranged fifth, the synchronization signal terminal Tp4 is arranged sixth, and the reference potential terminal Tp5 is arranged seventh. It will be.

  As described above, the camera system 1 has the same reason as that of the terminal arrangement described with reference to FIG. 5 and the like because the terminals indicated by the reference signs Tp1 to Tp12 are arranged under the above-described conditions. Therefore, it becomes a highly convenient system.

  In the present embodiment, the numbers indicating the arrangement of the terminals are numbers that increase in order from one side (+ X side) to the other side (−X) side in the terminal arrangement direction (X-axis direction). The numbers may be ascending from the other side (−X side) to the one side (+ X) side. In this case, in the terminal arrangement of the terminal portion 25, the first and second terminals are the power supply terminal Tp12 and the power supply terminal Tp11, respectively, and the eleventh and twelfth terminals are the ground terminal Tp2 and the ground terminal Tp1, respectively. It becomes. Further, the above-described modification relating to the arrangement of the plurality of terminals in the terminal portion 25 of the camera body 100 can be applied to the arrangement of the plurality of terminals in the terminal portion 423 of the accessory 400.

  In the present embodiment, the photographic lens 200 shown in FIG. 1 can be attached to and detached from the camera body 100, but it cannot be attached to and detached from the camera body 100 and is integrated with the camera body 100. Good. At least a part of the taking lens 200 may be housed in the camera body 100. In the present embodiment, the camera 10 only needs to include at least the camera body 100 and may not include the photographing lens 200. That is, the photographic lens 200 is an external device (accessory) of the camera and may be a component of the camera system 1. The accessory 400 can be electrically connected between the connector 420 and the shoe seat 15 via a cable or the like, and may be held by a device other than the camera body 100, such as a tripod.

  In the present embodiment, the battery storage unit 110 illustrated in FIG. 6 is built in the camera body 100, but the battery storage unit 110 may be a device (accessory) outside the camera body 100. For example, the battery storage unit 110 may be externally attached to the camera body 100. The camera system 1 can also operate the components of the camera system 1 by power supplied from the outside of the camera body 100 via an AC adapter or the like. The camera system 1 can supply external power to each component of the camera system 1 in the same manner as the power supplied from the battery BAT stored in the battery storage unit 110.

  In the present embodiment, the memory 140 shown in FIG. 6 may be built in the camera body 100 or may be an external device (accessory) of the camera body 100.

  In the present embodiment, the first pilot lamp 455 shown in FIG. 2 is configured so as to indicate the state in which the flash light emitting unit 430 can emit light by switching on or off, but the emitted light The flash light emitting unit 430 may be configured to emit light by changing the wavelength of the light or the cycle of repeating turning on and off. As with the first pilot lamp 455, the second pilot lamp 460 shows a state in which the illumination light emitting unit 435 can emit light by changing the wavelength of the emitted light, the cycle of repeating turning on and off, and the like. It may be configured.

  Next, a processing procedure in the camera system will be described. In the following description, the same processing is denoted by the same reference numeral, and the description thereof may be simplified or omitted.

  FIG. 10 is a flowchart illustrating a processing procedure in the camera system. The camera system 1 performs a series of processing (activation sequence) for activating the accessory 400. In the activation sequence (step S1), the camera system 1 performs a series of processes (communication preparation sequence) for preparing communication between the camera 10 and the accessory 400 (step S2). The camera system 1 performs a series of processes (initial communication sequence) for mutually communicating information necessary for imaging between the camera control unit 170 and the accessory control unit 440 after the communication preparation sequence ends in the startup sequence (steps). S3). The camera system 1 performs a series of processes (stationary communication sequence) for mutual communication between the camera control unit 170 and the accessory control unit 440 so that information changed due to a setting change or the like can be updated after the initial communication sequence ends. (Step S4).

The camera control unit 170 performs a determination process for determining whether or not there is an interrupt request after the end of the steady communication sequence (step S5). When it is determined in step S5 that there is no interrupt request (step S5; No), the camera system 1 performs the steady communication sequence again.
When it is determined in step S5 that there is an interrupt request (step S5; Yes), the camera system 1 performs an interrupt process (step S6). The interrupt process is a series of processes included in the shooting sequence, for example. The camera system 1 performs the process of the steady communication sequence again after the interruption process is completed. That is, the camera system 1 does not perform the steady communication sequence process in the shooting sequence.

  Next, a communication preparation sequence will be described. The camera system 1 detects whether or not the accessory 400 is attached to the camera body 100 in the communication preparation sequence. The camera system 1 starts supplying power to the accessory 400 when the accessory 400 is mounted on the camera body 100, and the camera body 100 notifies the accessory 400 that communication is permitted. . Hereinafter, an example of a processing flow in the communication preparation sequence will be described.

FIG. 11 is a diagram illustrating a processing procedure in the communication preparation sequence.
The signal level of the activation detection level DET output from the level switching unit 475 (see FIG. 9) is that the accessory 400 is mounted on the camera 10 and the circuit is closed by the second switch unit 470 ("ON" position). In this case, the L level is set (step S101). The camera control unit 170 performs a determination process for determining whether or not the activation detection level DET is the L level (step S102). When it is determined in step S102 that the activation detection level DET is not the L level (step S102; No), the camera control unit 170 determines that the accessory 400 is not attached to the camera 10, and the process of step S102 is performed. The determination process is performed again.

  When it is determined in step S102 that the activation detection level DET is L level (step S102; Yes), the camera control unit 170 performs control to start power supply from the camera 10 to the accessory 400 (step S103). In step S <b> 103, the camera control unit 170 controls the accessory power supply control unit 33 to cause the accessory power supply control unit 33 to start supplying power from the camera 10 to the accessory 400. The accessory control unit 440 is activated by the power supplied from the camera 10 via the power supply unit (the first power supply unit 450-1 and the second power supply unit 450-2).

  Camera control part 170 notifies permission of communication to accessory control part 440 after the end of control of Step S103 (Step S104). The potential of the communication control signal terminal Tp9 of the camera 10, that is, the signal level of the communication control signal Cs is L level in a state where the camera control unit 170 determines that the accessory 400 is not attached to the camera 10.

  The accessory control unit 440 performs determination processing for determining whether or not the potential of the communication control signal terminal Ts9, that is, the signal level of the communication control signal Cs is H level (step S105). The accessory control part 440 performs the determination process of step S105 again, when it determines with communication control signal Cs not being H level by step S105 (step S105; No). If the accessory control unit 440 determines in step S105 that the communication control signal Cs is at the H level (step S105; Yes), the accessory control unit 440 recognizes that communication with the camera control unit 170 is permitted.

  In the communication preparation sequence, the camera control unit 170 raises the communication control signal Cs to H level in step S104 to notify communication permission, and the accessory control unit 440 recognizes that communication with the camera control unit 170 is permitted. finish.

  Thus, since the camera system 1 starts supplying power to the accessory 400 based on the activation detection level DET output from the accessory 400, the reliability of control for supplying power to the accessory 400 is increased. In addition, the camera system 1 notifies communication permission after the camera control unit 170 starts supplying power to the accessory 400. Thus, the camera system 1 stably controls the start of communication between the camera 10 and the accessory 400 because the accessory control unit 440 receives a notification of communication permission while the accessory 400 is activated. be able to. Thus, since the camera system 1 can control the accessory 400 stably and operates stably, it is a highly convenient system.

  It should be noted that the activation detection level DET of the camera 10 is H level when the second switch unit 470 of the accessory 400 attached to the camera 10 is in a state where the circuit is cut off (“OFF” position). In this case, the camera control unit 170 determines that the accessory 400 is not attached to the camera 10. That is, when the second switch unit 470 is in the “off” position, the accessory 400 does not receive power supply from the camera 10 and thus does not start up (in other words, “does not function”). As described above, the second switch unit 470 substantially functions as a power switch (function on / off switch) of the accessory 400.

  Next, processing in the initial communication sequence will be described. The camera system 1 sends information required for shooting between the camera 10 and the accessory 400 to each other in the initial communication sequence. The camera 10 and the accessory 400 transmit and receive a plurality of pieces of information according to a predetermined order in the initial communication sequence. As an initial condition for processing in the initial communication sequence, information (first response information, first information) including accessory type information indicating the accessory type is stored in advance in the storage unit 444 of the accessory 400. The accessory type information includes function type information and battery presence / absence information.

  The function type information is information (type information) indicating the type of the control target of the accessory control unit 440. The control target of the accessory control unit 440 is an illumination light emitting unit 435 for causing the illumination light emitting function to function, a flash light emitting unit 430 for causing the flash emitting function to function, a GPS function unit for causing the GPS function to function, and a multiple lamp for causing the multiple lamp commander function to function. Commander function unit. The plurality of control objects are divided into a plurality of groups according to the type of function of each control object. Control targets related to the light emitting function, that is, the flash light emitting unit 430 and the illumination light emitting unit 435 belong to the first group. Control objects related to functions other than the light emitting function, for example, the GPS function unit and the multi-lamp commander function unit belong to the second group. Thus, the type information is information indicating a list of types of functions that the accessory 400 has.

  The battery presence / absence information is information indicating whether or not the accessory 400 is equipped with a power source such as a battery (in other words, information indicating whether or not the accessory 400 can supply the power consumed on the accessory 400 side). is there. This battery presence / absence information is information used for control (described later) in which the camera 10 supplies power to the accessory 400. Details of the battery presence / absence information will be described later.

  The storage unit 444 stores characteristic information (second response information, second information) indicating characteristics of each function of the accessory 400 in advance. The characteristic information includes information indicating the characteristic of each functional unit responsible for each function of the accessory 400. For example, the characteristic information of the flash light emitting function includes information (profile information) indicating the light emission characteristics of the flash light emitting unit 430. The characteristic information of the illumination light emitting function includes information (illumination profile information) indicating the light emission characteristics of the illumination light emitting unit 435 (LED for photographing illumination), and the longest time during which the illumination light emitting unit 435 can continuously emit light (longest Information indicating lighting time). The longest lighting time is, for example, a time set in advance as an upper limit of an allowable range of continuous lighting time. Further, the extended function characteristic information includes, for example, information indicating the type (latitude, longitude, time, etc.) of an object to be measured if the extended function is a GPS function. The characteristic information of the multi-light commander function includes, for example, information indicating how many lighting devices (strobes) can transmit a command (command).

  The camera control unit 170 transmits each piece of information to the accessory control unit 440 in accordance with a predetermined order (request order) for a plurality of pieces of information requested to be transmitted to the accessory control unit 440. Information is stored in the storage unit 444 in advance so that the accessory control unit 440 can read out the information in order according to the request order. The accessory control unit 440 reads information from the storage unit 444 according to the request order, and transmits a communication signal DATA indicating the read information to the camera control unit 170. In addition, the camera control unit 170 transmits camera initial state information indicating an initial state of the camera body 100 to the accessory control unit 440 in an order predetermined with respect to the request order. The initial state information is stored in advance in the storage unit 158 of the camera body 100. The camera initial state information includes monitor charging permission information and the like. The monitor charge permission information is used for charge control described later. Hereinafter, an example of a processing flow in the initial communication sequence will be described.

  FIG. 12 is a diagram illustrating a processing procedure in the initial communication sequence. FIG. 13 is a diagram illustrating a procedure of processes subsequent to FIG. 12 and 13, similarly to FIG. 11, the flow on the left side in the drawing is the processing content in the camera control unit 170 of the camera body 100, and the flow on the right side in the drawing is the processing content in the accessory control unit 440 of the accessory 400. .

  When the initial communication sequence is started after the communication preparation sequence (see FIGS. 9 and 10) is completed, the camera control unit 170 sends a transmission request command C1 for requesting transmission of information included in the accessory initial state information. It transmits to the accessory control part 440, and prepares for receiving accessory initial state information (step S201). The transmission request command C1 is request information indicating that the camera control unit 170 requests transmission of accessory type information in the accessory initial state information.

  The accessory control unit 440 receives the transmission request command C1 (step S202). The accessory control unit 440 stores response information responding in response to the request information (transmission request command C1) from the camera control unit 170 in the storage unit 444 in advance before transmitting the response information to the camera control unit 170. . In response to the request information sent from the camera control unit 170, the accessory control unit 440 reads the response information stored in the storage unit 444 and sends (transmits) the response information to the camera control unit 170 (step S203). The camera control unit 170 receives battery presence / absence information and function type information (step S204).

  The camera control unit 170 transmits the transmission notification command C20 for notifying the transmission of the “camera initial state information” described above to the accessory control unit 440, and prepares to transmit the camera initial state information (step S204A). The accessory control unit 440 receives the transmission notification command C20 and prepares to receive the camera initial state information (step S204B). After transmitting the transmission notification command C20 in step S204A, the camera control unit 170 transmits camera initial state information to the accessory control unit 440 (step S204C). The accessory control unit 440 receives camera initial state information (step S204D).

  The camera control unit 170 determines whether or not the accessory 400 has an extended function based on the function type information received in step S204 (step S205). When it is determined in step S205 that the accessory 400 has the extended function (step S205; Yes), the camera control unit 170 sends a transmission request command C2 for requesting transmission of characteristic information indicating details of the extended function to the accessory control unit. It transmits to 440 (step S206). The accessory control unit 440 receives the transmission request command C2 (step S207) and transmits the extended function characteristic information to the camera control unit 170 according to the transmission request command C2 (step S208). The camera control unit 170 receives the extended function characteristic information (step S209).

  When the camera control unit 170 determines in step S205 that a priority function (for example, a GPS function) is included as an extended function, the camera control unit 170 designates the priority function with the transmission request command C2, and thereby the characteristics of the priority function in step S209. Information can be received. This priority function is a function that is set in advance to be preferentially turned on (enabled) among the functions of the accessory 400. When the camera control unit 170 receives the characteristic information of the priority function in step S209, the camera control unit 170 performs processing with priority over other functions in the accessory 400. The camera control unit 170 can transmit, for example, a command for enabling the priority function to the accessory control unit 440 (thus, the activation of the extended function can be accelerated).

  The camera control unit 170 receives the function type information received in step S204 after receiving the extended function characteristic information or when it is determined in step S205 that the accessory 400 does not have the extended function (step S205; No). Based on the above, it is determined whether or not the accessory 400 has an illumination light emitting function (step S210). When the camera control unit 170 determines in step S210 that the accessory 400 has the illumination light emitting function (step S210; Yes), the camera control unit 170 transmits initial state information (third response information, third information) of the illumination light emission function. The requested transmission request command C3 is transmitted to the accessory control unit 440 (step S211). The accessory control unit 440 receives the transmission request command C3 (step S212), and transmits the initial state information of the illumination light emitting function to the camera control unit 170 according to the transmission request command C3 (step S213). The camera control unit 170 receives the initial state information of the illumination light emitting function (step S214).

  When it is determined in step S210 that the accessory 400 does not have the illumination light emitting function (step S210; No), the camera control unit 170 determines that the accessory 400 has the flash light emitting function based on the function type information received in step S204. Is determined (step S215). When the camera control unit 170 determines in step S215 that the accessory 400 does not have the flash light emission function (step S215; No), the accessory 400 has the illumination light emission function based on the function type information received in step S204. It is determined whether or not it has a function that does not correspond to either the flash light emission function or the flash light emission function, for example, a multi-light commander function (step S216). Thus, the accessory 400 may not have both the illumination light emission function and the flash light emission function. The light emitting unit 425 that the accessory control unit 440 controls the light emission state may be provided in a device different from the accessory 400.

  After the process of step S214 is completed, when the camera control unit 170 determines in step S215 that the accessory 400 has a flashing function (step S215; Yes), or after the process of step S216 is completed, A transmission request command C4 for requesting transmission of settable information indicating a function whose characteristics can be set among 400 functions is transmitted to the accessory control unit 440 (step S217). After receiving the transmission request command C4 (step S218), the accessory 400 transmits the settable information of the accessory 400 to the camera control unit 170 (step S219). The camera control unit 170 receives the settable information of the accessory 400 (step S220).

  The camera control unit 170 transmits a transmission request command C5 for requesting transmission of profile information indicating the profile of the accessory 400 to the accessory control unit 440 (step S221).

  In the present embodiment, the profile information is information indicating the characteristics of the flash emission function. The profile information includes information indicating the light emission characteristics of the flash light source 431, for example. The light emission characteristics of the flash light source 431 include, for example, at least one of the light amount (brightness) and wavelength (color) of light emitted from the flash light source 431. For example, the profile information is used for AWB control or the like in a shooting mode in which a flash emission function is functioned.

  After receiving the transmission request command C5 (step S222), the accessory 400 transmits the profile information to the camera control unit 170 (step S223). The camera control unit 170 receives profile information (step S224).

  The camera control unit 170 determines whether the accessory 400 has an illumination light emitting function based on the function type information received in step S204 (step S225). When the camera control unit 170 determines in step S225 that the accessory 400 has the illumination light emitting function (step S225; Yes), the camera control unit 170 sends a transmission request command C6 for requesting transmission of the illumination profile information to the accessory control unit 440. Transmit (step S226).

  In the present embodiment, the illumination profile information is information indicating the characteristics of the illumination light emission function. The illumination profile information includes information indicating the light emission characteristics of the illumination light source 437, for example. The light emission characteristics of the illumination light source 437 include, for example, at least one of the light amount (brightness) and wavelength (color) of light emitted from the flash light source 431. The illumination profile information is used for AE control, AWB control, etc., for example, in a shooting mode in which the illumination light emission function is functioned.

  After receiving the transmission request command C6 (step S227), the accessory control unit 440 transmits the illumination profile information to the camera control unit 170 (step S228). The camera control unit 170 receives the illumination profile information (step S229).

  When the camera control unit 170 determines in step S225 that the accessory 400 does not have the illumination light emitting function (step S225; No), or after the processing of step S229 is completed, the transmission for requesting transmission of the accessory setting state information. The request command C7 is transmitted to the accessory control unit 440 (step S230). After receiving the transmission request command C7 (step S231), the accessory 400 transmits the accessory setting state information to the camera control unit 170 (step S232). The camera control unit 170 receives the accessory setting state information (step S233).

  The camera control unit 170 transmits the transmission notification command C8 for notifying that the “camera setting state information” described above is transmitted to the accessory control unit 440 (step S234). The accessory 400 receives the transmission notification command C8 (step S235). The camera control unit 170 transmits the camera setting state information to the accessory control unit 440 (step S236). The accessory control unit 440 receives the camera setting state information (step S237).

  A transmission request command C9 for requesting transmission of the accessory setting state information is transmitted to the accessory control unit 440 (step S238). After receiving the transmission request command C9 (step S239), the accessory 400 transmits the accessory setting state information to the camera control unit 170 (step S240). The camera control unit 170 receives the accessory setting state information (step S241). After the process of step S241 is completed, the initial communication sequence is terminated.

  The following processing is performed in the camera system 1 in accordance with the procedure of the initial communication sequence described above. As a first process included in the procedure of the initial communication sequence, the accessory control unit 440 includes a process of responding to the transmission request from the camera control unit 170 with the information stored in the storage unit 444. The response process to the transmission request is performed, for example, according to the control procedure shown below.

  As described above, the storage unit 444 stores response information that responds in response to request information from the camera control unit 170 in advance. For example, the accessory control unit 440 sends the response information stored in the storage unit 444 to the camera control unit 170 in accordance with the request information (see step S203) sent from the camera control unit 170 (see step S204). . By such processing, for example, the accessory control unit 440 transmits to the camera control unit 170 the type information of the control target controlled by the accessory control unit 440 in accordance with the request information from the camera control unit 170.

  In addition, when the storage unit 444 stores the first response information including type information indicating the type of control target of the accessory control unit 440, the accessory control unit 440 adds the request information sent from the camera. In response, the first response information is sent to the camera control unit 170.

  Further, the storage unit 444 associates the second response information including the detailed information of the control target of the accessory control unit 440 with the type information in the first response information when the control target of the accessory control unit 440 is controlled. May be remembered. In this case, the accessory control unit 440 sends the second response information to the camera control unit 170 according to the request information sent from the camera control unit 170.

  Also, the accessory control unit 440 sends the second response information to the camera control unit 170 at a timing (see step S208) different from the timing at which the first response information is sent (see step S203). For example, the accessory control unit 440 sends the first response information to the camera control unit 170 (see step S203), and then sends the second response information according to the request information sent from the camera control unit 170. The image is sent to the camera 10 (see step S208).

  There may be a plurality of control targets of the accessory control unit 440. In such a case, for each of the plurality of control targets, the storage unit 444 associates the second response information including the detailed information of the control target of the accessory control unit 440 with the type information of the control target. Remember every time. The accessory control unit 440 sends to the camera control unit 170 second response information including detailed information on the control target specified by the request information sent from the camera control unit 170 among the plurality of control targets. For example, the accessory control unit 440 transmits the characteristic information of the extended function (for example, GPS function) in accordance with the request information (see step S207) of the camera control unit 170 (see step S208). Further, the accessory control unit 440 transmits the characteristic information of the illumination light emitting function according to the request information (see step S212) of the camera control unit 170 regarding the function (for example, the illumination light emission function) different from the characteristic information of the extended function. (See step S213).

  Moreover, you may divide a some control object into a some group according to the kind of control object of the accessory control part 440. FIG. In the present embodiment, the control target belonging to the first group includes a flash light emitting unit 430 and an illumination light emitting unit 435 that are responsible for the light emitting function. The function to be controlled belonging to the first group may be a basic function included in the accessory 400. The control target belonging to the second group is, for example, a GPS function unit responsible for functions other than the light emitting function. The function to be controlled belonging to the second group may be an extended function included in the accessory 400.

  The accessory control unit 440 uses the third response information including the detailed information of the control target (for example, the illumination light emitting unit 435) belonging to the first group among the plurality of groups as the second response information to the camera control unit 170. Send (see step S213). When there is a control target belonging to a second group different from the first group among the plurality of groups, the accessory control unit 440 sends the first response information (see step S203), and the third control Before sending the response information (step S213), the fourth response information including the detailed information of the control target belonging to the second group is sent to the camera 10 as the second response signal (step S208).

  As described above, the camera system 1 performs processing in which the accessory control unit 440 responds to a transmission request from the camera control unit 170, for example, occurrence of communication failure due to mismatch between request information and response information. Is suppressed. In addition, for example, after the accessory 400 is mounted on the camera control unit 170, the camera system 1 first determines the presence / absence of the extended function based on the first response information. Since the camera 10 side is configured to acquire information on the extended function (fourth response information, fourth information) at an early stage, the extended function information is also acquired on the camera 10 side based on the acquired extended function information. Can expedite the preparation work for. For example, if an accessory has a GPS function as an extended function, it is possible to start acquisition of GPS positioning information at an early stage, and to start transmission processing to the camera 10 (reception processing on the camera 10 side). . Thus, the camera system 1 is a highly convenient system.

  Next, processing in control for supplying power to the accessory 400 (hereinafter referred to as power supply control) will be described. The camera system 1 starts supplying power from the camera 10 to the accessory 400 in power supply control. Then, the camera system 1 controls the supply of power from the camera 10 to the accessory 400 based on information indicating whether or not the power consumed in the accessory 400 is supplied from the power source mounted on the accessory 400. Hereinafter, an example of a processing flow in the control of supplying power to the accessory 400 will be described.

  FIG. 14 is a diagram illustrating a processing procedure in the control of supplying power to the accessory. Of the processes shown in FIG. 14, the processes from step S101 to step S105 are the same as the processes described in the communication preparation sequence (see FIG. 11). Through the processing from step S101 to step S105, the camera control unit 170 starts supplying power to the accessory 400 based on the signal level of the activation detection level DET in the communication preparation sequence (see step S103).

  Of the processes shown in FIG. 14, the processes from step S201 to step S204 are the same as the processes described in the initial communication sequence (see FIG. 12). In the process of step S <b> 204, the camera control unit 170 receives, for example, battery presence / absence information from the accessory control unit 440 as information indicating whether or not the power consumed by the accessory 400 is supplied from the power source mounted on the accessory 400. To do.

  The camera control unit 170 determines whether or not a battery is mounted on the accessory 400 based on the battery presence / absence information received in step S204 after the process of step S204 is completed (step S250). If the camera control unit 170 determines in step S250 that the battery is mounted on the accessory 400 (step S250; Yes), the camera control unit 170 stops the power supply to the accessory 400 started in step S103 of the communication preparation sequence. Control is performed (step S251). That is, in step S251 of the camera control unit 170, the camera control unit 170 controls the accessory power supply control unit 33 to stop the accessory power supply control unit 33 from supplying power from the camera body 100 to the accessory 400. If the camera control unit 170 determines in step S250 that the battery is not mounted on the accessory 400 (step S250; No), the camera control unit 170 maintains power supply to the accessory 400 started in step S103 of the communication preparation sequence. To do. The control of power supply to the accessory 400 is terminated after the camera control unit 170 determines that no battery is mounted on the accessory 400 or after the camera control unit 170 stops the power supply to the accessory 400. The

  As described above, when the camera control unit 170 determines that a battery is mounted on the accessory 400 based on the battery presence / absence information, the camera control unit 170 supplies power consumption in the accessory 400 from the battery mounted on the accessory 400. And the supply of power to the accessory 400 is stopped. In addition, when the camera control unit 170 determines that no battery is mounted on the accessory 400 based on the battery presence / absence information, the camera control unit 170 determines that the power consumption in the accessory 400 is not supplied from the battery mounted on the accessory 400. The power supply to the accessory 400 is continued. As described above, the accessory control unit 440 determines whether or not the accessory 400 includes a power source, in other words, whether or not the power consumption on the accessory 400 side is supplied from the battery mounted in the accessory 400 ( Information indicating whether or not the power supply from the camera 10 is not required and power can be supplied only by the accessory 400 side, in other words, whether or not the camera 10 is requested to supply power consumed by the accessory 400. The battery presence / absence information is sent to the camera control unit 170. In the present embodiment, the accessory control unit 440 sends battery presence / absence information in response to a request from the camera control unit 170 (see step S201).

  By the way, in the camera system 1 of the present embodiment, the camera 10 supplies power to the accessory 400, and the accessory 400 is not equipped with a power source. Therefore, the accessory control unit 440 sends battery presence / absence information (battery “none” information) indicating that the power source is not mounted on the accessory 400 to the camera 10. Based on the battery presence / absence information sent from the accessory control unit 440 (see step S204), the camera control unit 170 supplies power to the accessory 400 that started before the battery presence / absence information was sent. Continue. In this manner, the accessory control unit 440 in the accessory 400 that does not include a power supply sends battery presence / absence information (battery “none” information) to the camera 10 in order to supply the power consumed by the accessory 400 from the camera 10.

  In addition, as the accessory 400, the power consumed on the accessory 400 side may be supplied from other than the camera 10. For example, when a power source (battery or the like) is mounted inside the accessory 400, or when an external power source that supplies power to the accessory 400 from the outside is provided (for example, a battery pack that supplies power to the accessory 400 is mounted. A system or a system for supplying household (commercial) power to the accessory 400 via an AC adapter or the like). In such a case, for example, when a battery is mounted inside the accessory 400, the accessory control unit 440 indicates battery presence / absence information indicating that the accessory is supplied with power consumed by the accessory 400 from the power source inside the accessory 400. (Battery “present” information) is sent to the camera 10. In this case, the camera control unit 170 receives the battery presence / absence information (battery “present” information) based on the battery presence / absence information (battery “presence” information) (step S204) sent from the accessory control unit 440. The supply of power to the accessory 400 that was started before is stopped (see step S251).

  By performing power supply control as described above, when the camera 10 is mounted with a power source on the accessory 400 side, for example, the camera 10 lacks power by continuing to supply power that does not need to be supplied to the accessory 400 side. Can be suppressed. Thus, the camera system 1 is a highly convenient system that can suppress the occurrence of problems such as operation stoppage due to insufficient power of the camera 10, for example.

  In the above description, the battery presence / absence information has been described as information indicating whether or not the power consumed in the accessory 400 is supplied from the power source mounted on the accessory 400, but is not limited thereto. It is not a thing. For example, the battery presence / absence information is information indicating whether or not the power from the camera 10 can be received, in other words, whether or not the accessory 400 has a power receiving capability for receiving power from the camera 10. It may be the information shown. Thus, even if the battery presence / absence information indicates any of the above information, the camera system 1 determines whether the camera 10 must supply power to the accessory 400 (power supply from the camera 10 to the accessory 400). The accessory 400 can continue to operate by the power supply, so that it is possible to suppress the occurrence of problems such as the operation stop of the accessory 400 due to the power supply stop from the camera 10. It becomes a highly system.

  Next, the steady communication sequence will be described. The camera system 1 sends information necessary for photographing between the camera 10 and the accessory 400 to each other in the steady communication sequence. The steady communication sequence is repeatedly executed, for example, at a cycle of about 200 ms in a period when no interrupt request is generated as shown in FIG. The camera 10 and the accessory 400 transmit and receive a plurality of pieces of information according to a predetermined order as in the sane communication sequence in each of the repeated steady communication sequences.

  In addition, the camera 10 and the accessory 400 update the information received in the previous initial communication sequence or the previous steady communication sequence, respectively, with the information received in the current steady communication sequence as necessary. Further, when updating the initial state information, the camera system 1 can update the initial state information by redoing the initial communication sequence or designating items that need to be updated. Hereinafter, an example of the processing flow of the steady communication sequence will be described.

  FIG. 15 is a diagram illustrating a processing procedure in the steady communication sequence. FIG. 16 is a diagram illustrating a procedure of processes subsequent to FIG.

  When the steady communication sequence is started, the camera control unit 170 transmits a transmission notification command C10 for notifying transmission of the camera setting state information to the accessory control unit 440 (step S301). The accessory control unit 440 receives the transmission notification command C10 and prepares to receive the camera setting state information (step S302). The camera control unit 170 transmits the latest camera setting state information of the item specified by the transmission notification command C10 to the accessory control unit 440 (step S303). The accessory control unit 440 receives the latest camera setting state information of the item specified in the transmission notification command C10 (step S304).

  The camera control unit 170 determines whether the accessory 400 has an illumination light emitting function based on the function type information acquired in step S204 (see FIG. 12) of the initial communication sequence (step S305). If the camera control unit 170 determines in step S305 that the accessory 400 has an illumination light emitting function (step S305; Yes), the camera control unit 170 requests transmission of illumination setting state information indicating the setting state of the illumination light emitting function. The request command C11 is transmitted to the accessory control unit 440 (step S306). After receiving the transmission request command C11 (step S307), the accessory control unit 440 transmits the illumination setting state information to the camera control unit 170 (step S308). The camera control unit 170 receives the illumination setting state information (step S309).

  When the camera control unit 170 determines in step S305 that the accessory 400 does not have the illumination light emitting function (step S305; No), or after the processing in step S309 is completed, the camera control unit 170 requests transmission of the accessory setting state information. The request command C12 is transmitted to the accessory control unit 440 (step S310). The accessory control unit 440 receives the transmission request command C12 (step S311), and transmits the latest accessory setting state information of the item specified in the transmission request command C12 to the camera control unit 170 (step S312). The camera control unit 170 receives the latest accessory setting state information of the item specified by the transmission request command C12 (step S313).

  The camera control unit 170 determines whether or not the initialization request is included in the accessory setting state information acquired in step S313 (step S314). The initialization request is information indicating that the accessory control unit 440 requests that the camera control unit 170 reacquires information on the accessory 400 acquired in the initial communication sequence or the steady communication sequence.

  When it is determined in step S314 that the accessory setting state information includes an initialization request (step S314; Yes), the camera control unit 170 discards information on the accessory 400 acquired in the initial communication sequence or the steady communication sequence. (Step S315). The camera control part 170 starts an initial communication sequence after the process of step S315 is complete | finished (step S316).

  If the camera control unit 170 determines in step S314 that the initialization request is not included in the accessory setting state information (step S314; No), the profile update request information is included in the accessory setting state information received in step S313. It is determined whether or not it is included (step S317). This profile update request information is information indicating that the accessory control unit 440 requests that the profile information of the illumination light emission function characteristic information acquired by the camera control unit 170 in the initial communication sequence be updated.

  When it is determined in step S317 that the accessory setting state information received in step S313 includes the profile update request information (step S317; Yes), the camera control unit 170 requests transmission of profile information. C13 is transmitted to the accessory control part 440 (step S318). The accessory control unit 440 receives the transmission request command C13 (step S319) and transmits profile information (step S320). The camera control unit 170 receives the profile information (step S321), and updates the profile information held before the process of step S321 to the illumination light emitting function characteristic information received in step S321.

  The camera control unit 170 receives the accessory received in step S313 after the process of step S321 is completed or when it is determined in step S317 that the profile update request information is not included in the accessory setting state information (step S317; No). It is determined whether or not the illumination profile update request information is included in the setting state information (step S322). The profile update request information is information indicating that the accessory control unit 440 requests that the camera control unit 170 update the illumination profile information acquired in the initial communication sequence.

  If the camera control unit 170 determines in step S <b> 313 that the accessory setting state information includes the illumination profile update request information in step S <b> 322 (step S <b> 322; Yes), the transmission request command that requests transmission of the illumination profile information. C14 is transmitted to the accessory control part 440 (step S323). The accessory control unit 440 receives the transmission request command C14 (step S324), and transmits the illumination profile information (step S325). The camera control unit 170 receives the illumination profile information (step S326), and updates the illumination profile information held before the process of step S321 to the flash light emitting function characteristic information received in step S321.

  The steady communication sequence is performed when the camera control unit 170 finishes receiving the illumination profile information, or when the camera control unit 170 determines in step S322 that the accessory setting state information does not include update request information regarding the flashing function. The process ends at (Step S322; No).

  As described above, the storage unit 444 stores in advance a plurality of response information that responds according to the request information from the camera control unit 170. For example, the accessory control unit 440 responds to the request information sent from the camera control unit 170 (see step S311), and sets the plurality of response information stored in the storage unit 444 in the order set in advance. (Step S312). Accordingly, the camera system 1 is a highly convenient system because, for example, occurrence of communication failure due to mismatch between request information and response information is suppressed.

  Further, according to the present embodiment, when the response of the accessory 400 to the first transmission request command C1 between the camera 10 and the accessory 400 includes a response indicating that there is an extended function, the camera 10 side performs the initial illumination. Before requesting the status information (see step S211), first, request the extended function characteristic information (see step S206). The accessory 400 first starts to activate the extended function in accordance with the request procedure from the camera 10. By configuring the procedure in this way, it is possible to accelerate the activation of the extended function.

  Incidentally, the camera control unit 170 may need to change settings related to the accessory 400 based on the accessory setting state information or the accessory initial state information updated in the above-described steady communication sequence. The accessory control unit 440 completes the necessary setting change by the next steady communication sequence when the setting change related to the camera 10 becomes necessary by the camera setting state information updated in the current steady communication sequence. To do. For example, the accessory control unit 440 sets whether to enable the illumination light emission function or the flash light emission function, and performs control for causing the activated light emission function to function.

  As an example regarding this, a setting process for enabling or disabling each light emitting function will be described. Setting processing for enabling or disabling each light emitting function is performed according to the shooting mode of the camera 10. The camera system 1 controls the light emitting unit 425 of the accessory 400 according to the shooting mode of the camera 10. The shooting mode is set according to, for example, an input from the user. When there is an input indicating that the shooting mode is set to the moving image shooting mode (an input from the user for setting a mode for capturing a moving image), the accessory 400 side performs the first light emission function of the illumination light emitting function. Set to mode. When there is an input indicating that the shooting mode is set to the still image shooting mode (an input from the user to set a mode for shooting one still image each time the release button 16 is fully pressed). On the other hand, the accessory 400 side is set to the second shooting mode in which the flash emission function is made to function. In addition, when there is an input from the user indicating that the flash mode is set to the flash-prohibited shooting mode (the mode in which shooting is performed without the flash function functioning), or the flash function is not required to secure the exposure amount. In other cases, the accessory 400 side is set to the third shooting mode in which neither the illumination light emission function nor the flash light emission function is allowed to function.

  Next, a processing flow of a setting process for enabling or disabling each light emitting function will be described with reference to the flowchart of FIG.

  FIG. 17 is a diagram illustrating a procedure of setting processing for enabling or disabling each light emitting function. Of the processes shown in FIG. 17, the process of step S304 is the same process as the information reception process (for example, step S204D or step S237) described in the steady communication sequence (see FIGS. 12 and 13).

  In step S304, the accessory control unit 440 receives the above-described “camera setting state information” including shooting mode information indicating which shooting mode (moving image mode or still image mode) the camera 10 is set to. To do. For example, when the shooting mode information included in the camera setting state information received in step S304 of the steady communication sequence is updated, for example, the next steady communication sequence is started. Complete by

  Based on the shooting mode information included in the camera setting state information received in step S304 of the steady communication sequence, the accessory control unit 440 enters the first shooting mode (illumination imaging) in which the shooting mode of the camera 10 functions the illumination light emission function. It is determined whether it is set (step S330). When the accessory control unit 440 determines that the shooting mode of the camera 10 is set to the first shooting mode (step S330; Yes), the accessory control unit 440 sets the flash emission function to an off state (invalid) and the illumination emission function. The on state (valid) is set, and the set state is held by a flag (step S331).

  At the stage where the flash emission function is set to the off state and the illumination emission function is set to the on state (valid), the accessory control unit 440 turns off the first conduction switch and turns the second conduction switch on. Set to ON state. Also, at the stage where the flash emission function is set to the off state, the accessory control unit 440 prepares for flash emission, that is, the main charging process for the storage unit described above, and monitor charging for monitoring the charge amount of the storage unit. Stop processing.

  Following the process in step S331, the accessory control unit 440 sets the first pilot lamp 455 (PL2) to be turned off and sets the second pilot lamp 460 (PL1) to be turned on (step S332). The setting process for enabling or disabling each light emitting function ends after the process of step S332 ends when the shooting mode of the camera 10 is set to the first shooting mode.

  When the accessory control unit 440 determines that the shooting mode of the camera 10 is not set to the first shooting mode (step S330; No), the shooting mode of the camera 10 has a flashing function based on the shooting mode information. It is determined whether or not the second shooting mode to be functioned (flash imaging) is set (step S333). When the accessory control unit 440 determines that the shooting mode of the camera 10 is set to the second shooting mode (step S333; Yes), the accessory control unit 440 sets the flash emission function to be valid and sets the illumination emission function to be invalid. The set state is held by the flag (step S334).

  At the stage where the flash emission function is enabled and the illumination emission function is disabled, the accessory control unit 440 sets the above-described first conduction switch to the ON state and sets the second conduction switch to the OFF state. . At the stage where the flash emission function is set to be effective, the accessory control unit 440 performs a preparation process for flash emission, that is, the above-described charging process for the storage unit.

When the flash light emission preparation process (charging process) is completed by the process in step S334, the accessory control unit 440 sets the first pilot lamp 455 to be turned on and sets the second pilot lamp 460 to be turned off. (Step S335).
The user can know that the flash light emitting unit 430 can emit light (charge completion state) by turning on the first pilot lamp 455. The setting process for enabling or disabling each light emitting function is ended after the process of step S335 is ended when the shooting mode of the camera 10 is set to the second shooting mode.

  The accessory control unit 440 determines that the shooting mode of the camera 10 is not set to the first shooting mode (step S330; No), and determines that the shooting mode of the camera 10 is not set to the second shooting mode. In this case (step S333; No), it is determined that the shooting mode of the camera 10 is set to the third shooting mode in which the light emission function is not used, and the flash light emission function is disabled and the illumination light emission function is also disabled. Then, the set state is held by the flag (step S336). Following the process in step S336, the accessory control unit 440 sets the first pilot lamp 455 to be turned off and also sets the second pilot lamp 460 to be turned off (step S337). The setting process for enabling or disabling each light emitting function is ended after the process of step S337 is ended when the shooting mode of the camera 10 is set to the third shooting mode.

  In the processing flow as described above, the accessory control unit 440 receives shooting mode information indicating the shooting mode of the camera 10 (see step S304). For example, the accessory control unit 440 receives the first shooting mode information when the selected shooting mode is the first shooting mode. The accessory control unit 440 receives the second shooting mode information when the selected shooting mode is the second shooting mode.

  The accessory control unit 440 controls processing in the accessory 400 according to the shooting mode of the camera 10. For example, the accessory control unit 440 controls the light emission processing of the flash light emission unit 430 and the light emission processing of the illumination light light emission unit 435 according to the shooting mode. For example, when the shooting mode is set to the first shooting mode, the accessory control unit 440 sets the illumination light emission function to be effective (see step S331) and controls the light emission processing of the illumination light emission unit 435. For example, when the shooting mode is set to the second shooting mode, the accessory control unit 440 sets the flash light emission function to be effective (see step S334) and controls the light emission processing by the flash light emission unit 430. . The accessory control part 440 performs control, such as charge control demonstrated later, when the flash light emission function is set effectively.

  As described above, in the camera system 1, the accessory control unit 440 automatically sets the validity or invalidity of each light emitting function according to the shooting mode selected by the user, for example. When the flash light emitting unit 430 is set to be invalid in accordance with the automatic setting on the accessory 400 side, the light emission preparation operation in the flash light emitting unit 430 such as a charging process is automatically stopped. It is a highly convenient system that can suppress unnecessary power consumption.

  Next, charging control for the flash light emitting unit 430 to be performed in the flash light emitting function will be described.

  FIG. 18 is a diagram illustrating a charging control processing procedure for the flash light emitting unit 430 to be functioned in the flash light emitting function. When starting the charge control, the camera system 1 executes each process of the charge control in the initial communication sequence (step S7), and then executes each process of the charge control in the steady communication sequence (step S8). The camera system 1 determines whether or not to execute the imaging process (interrupt process) after completing the process of step S8 (step S9). When the camera control unit 170 determines in step S9 that the imaging process is executed (step S9; Yes), the camera system 1 executes each process of the imaging sequence.

  In the present embodiment, the camera system 1 performs shooting processing including imaging processing, AF control, AE control, AWE control, and the like in the shooting sequence. Further, the camera system 1 executes each process of charging control in the shooting sequence together with the shooting process in the shooting sequence (step S10). When the camera control unit 170 determines in step S9 that the imaging process and each process of the charging control in the imaging sequence are completed or the imaging process is not executed (step S9; No), the camera system 1 performs step S8. The charging control in the steady communication sequence is performed again.

  As described above, the steady communication sequence is repeatedly performed at a constant period (for example, 200 ms) during a period in which the imaging process is not performed. Further, the steady communication sequence following the shooting sequence is performed after a time corresponding to the length of the period during which the shooting sequence processing is performed from the steady communication sequence performed immediately before the shooting sequence. That is, the steady communication sequence is repeatedly performed at a constant or indefinite period.

  In each steady communication sequence, the accessory control unit 440 transmits charging state information including charging state information indicating a control state of control for the charging unit 432 to the camera control unit 170. Since the steady communication sequence is repeatedly performed at a constant or indefinite period, the accessory control unit 440 repeatedly sends the charging state information to the camera control unit 170 at a constant or indefinite period. The camera control unit 170 causes the accessory control unit 440 to control the charging unit 432 based on the charging state information received from the accessory control unit 440.

  By the way, since the steady communication sequence is suspended when the imaging sequence is started, the accessory control unit 440 does not transmit the charging state information to the camera control unit 170 during the period in which the camera 10 is in the state of performing the imaging process. Become. In the imaging sequence, the camera control unit 170 sends a command to the accessory control unit 440 to cause the accessory control unit 440 to control the charging unit 432 without receiving the charge state information from the accessory control unit 440.

  As described above, in the camera system 1, the charging control for the flash light emitting unit 430 is performed corresponding to each sequence. Hereinafter, processing in each sequence in the charging control for the flash light emitting unit 430 will be described for each sequence.

  First, charging control in the initial communication sequence among charging control for the flash light emitting unit 430 will be described. The accessory 400 of this embodiment is not equipped with a power supply (battery) that supplies the power consumption of the accessory 400. Further, the charging unit 432 of the accessory 400 cannot detect the amount of stored electricity (charged amount) stored in the storage unit except during the charging process for charging the storage unit. That is, the accessory 400 of this embodiment does not hold information indicating the charge amount of the charging unit 432 at the time when the initial communication sequence is started. Therefore, the camera control unit 170 provides the accessory control unit 440 with camera initial state information including monitor charging information indicating that the monitor charging operation on the accessory 400 side (charging unit 432) is permitted as setting information in the initial communication sequence. And transmit the monitor to the accessory control unit 440. The monitor charging information is information indicating whether the camera control unit 170 permits the accessory control unit 440 to perform a monitor charging operation. The monitor charge information is monitor charge permission flag data indicating “permitted” and “prohibited” of monitor charging by “0 (zero)” and “1”. The monitor charging information is stored in advance in the storage unit 158. Hereinafter, an example of a processing flow of charge control in the initial communication sequence will be described.

  FIG. 19 is a diagram illustrating a procedure of charging control processing in the initial communication sequence. Of the processes shown in FIG. 19, the processes from step S204A to step S204D are the same as the processes described in the initial communication sequence (see FIG. 12). The camera control unit 170 reads the camera initial state information stored in the storage unit 158 after transmitting the transmission notification command C20 to the accessory control unit 440 through the process of step S204A. This camera initial state information includes the monitor charging “permission” information described above. Next, the camera control unit 170 transmits the camera initial state information read in step S204A to the accessory control unit 440 through the process of step S204C.

  The accessory control part 440 will memorize | store this camera initial state information in the memory | storage part 444, if camera initial state information is received by the process of step S204D. That is, the monitor charging “permission” information supplied from the camera body 100 is stored in the storage unit 444. The accessory control unit 440 causes the charging unit 432 to start a monitor charging process for slightly charging the storage unit of the charging unit 432 based on the monitor charging “permission” information (step S401). The charging unit 432 detects the amount of electricity stored in the charging unit 432 by the monitor charging process (monitor charge amount), and calculates the current charge amount of the storage unit based on the monitor charge amount. The accessory control unit 440 acquires information indicating the charge amount from the charging unit 432 (step S402). The accessory control unit 440 generates charging state information to be transmitted to the camera control unit 170 in the steady communication sequence following the initial communication sequence based on the information indicating the accumulated charge amount acquired in step S402, and the generated charging state information is displayed. The data is stored in the storage unit 444. The charging control in the initial communication sequence is terminated after the accessory control unit 440 stores the charging state information in the storage unit 444.

  As described above, the accessory control unit 440 acquires information indicating the monitor charge amount before starting periodic communication (steady communication sequence) with the camera control unit 170. In addition, the accessory control unit 440 can cause the charging unit 432 to perform monitor charging without sending a charge request to the camera control unit 170 in the initial communication sequence. Thereby, the accessory control part 440 can prepare the charge condition information transmitted to the camera control part 170 in the first steady communication sequence following the initial communication sequence in the initial communication sequence. As a result, the camera control unit 170 can receive the charge state information from the accessory control unit 440 in the initial steady communication sequence, and can start the charge control based on the received charge state information. Thereby, the camera system 1 can shorten the time from when the accessory 400 is attached to the camera body 100 until the charging control is started. As a result, the camera system 1 can shorten the time required to perform photographing for functioning the flash emission function, and becomes a highly convenient system. In the above example, the accessory control unit 440 performs monitor charging according to the monitor charging “permission” information received from the camera control unit 170 without sending a monitor charging request to the camera control unit 170 in the initial communication sequence. However, it is not limited to this. For example, the accessory control unit 440 monitors the monitor requesting the camera control unit 170 for a monitor charging command during a period from when the accessory 400 is attached to the camera body 100 until the initial communication sequence is started or during the initial communication sequence. A charge request may be transmitted. In this case, the camera control unit 170 may not transmit the monitor charging “permission” information.

  Next, charging control in the steady communication sequence among charging control for the flash light emitting unit 430 will be described.

  The camera system 1 of the present embodiment determines a plurality of items indicating the charging state of the charging unit 432 in descending order of the influence on the imaging process as the first process of the charging control in the steady communication sequence. In the first process, the camera control unit 170 determines the charging state of the charging unit 432 based on the charging state information included in the accessory setting state information received from the accessory control unit 440 in the current steady communication sequence. . The accessory control unit 440 sends charge state information indicating a control state of control for the charging unit 432 to the camera control unit 170. As described above, the charging state information includes charging request information indicating whether or not there is a charging request, charging progress information indicating whether or not the charging unit 432 is charging, and the charging unit 432 can be charged. Charge availability information indicating whether or not the light is emitted, and light emission availability information indicating whether or not the flash light emitting unit 430 is in a state capable of emitting light (ready state).

  Further, the camera system 1 of the present embodiment is performed in the camera system 1 when the flash light emitting unit 430 is not in a state capable of emitting light (ready state) as the second process of charge control in the steady communication sequence. Among the plurality of processes, the process of charging the storage unit (charge storage unit) of the charging unit 432 is performed with priority.

  For example, when the flash light emitting unit 430 is not in the ready state, the camera control unit 170 interrupts the operation on the camera 10 side such as AF control and power zoom control (sets the operation prohibited state), and stores the storage unit ( The process of charging the charge storage unit) is given priority over AF control and power zoom control. When the camera control unit 170 is set to the operation prohibition state, the camera control unit 170 causes the charging unit 432 to perform charging (normal charging) at a preset first charging speed. In addition, when the flash light emitting unit 430 is in the ready state, the camera control unit 170 causes the charging unit 432 to perform charging (slow charging) on the second charging side that is slower than the first charging speed, and the operation is prohibited. Is released.

  FIG. 20 is a diagram illustrating a procedure of charge control processing in the steady communication sequence. Of the processes shown in FIG. 20, the process of step S313 is the same as the process described in the steady communication sequence (see FIG. 15). In step S313, the camera control unit 170 receives the accessory setting state information including the charging state information. The camera control unit 170 determines whether or not the charging unit 432 can be charged based on the above-described charging availability information in the charging state information acquired in step S313 (step S430). When the camera control unit 170 determines in step S430 that the charging unit 432 cannot be charged (step S430; No), the charging control in this steady communication sequence ends.

  When it is determined in step S430 that the charging unit 432 can be charged (step S430; Yes), the camera control unit 170 requests a monitor charging request based on the charging request information in the charging state information acquired in step S313. It is determined whether or not there is (step S431). If the camera control unit 170 determines in step S431 that there is a monitor charge request (step S431; Yes), the accessory control unit 440 sends a command (monitor charge command) requesting the accessory control unit 440 to start monitor charge. Transmit (step S432). The charging control in this steady communication sequence is finished after the process of step S432 is finished.

  If the camera control unit 170 determines in step S431 that there is no monitor charge request (step S431; No), is there a main charge request based on the charge request information in the charge state information acquired in step S313? It is determined whether or not (step S433). If the camera control unit 170 determines in step S433 that there is a main charge request (step S433; Yes), the flash light emission unit 430 is ready based on the light emission availability information in the charge state information acquired in step S313. It is determined whether it is in a state (step S434).

  When it is determined in step S434 that the flash light emitting unit 430 is not in the ready state (step S434; No), the camera control unit 170 sets an operation prohibited state that restricts (prohibits) a part of the operation of the load unit 30. (Step S435). In the present embodiment, the camera control unit 170 restricts the operation of at least a part of the heavy load unit in the load unit 30 in step S435. In the present embodiment, the camera control unit 170 restricts (inhibits) the operation of the optical system driving unit 220 in step S435.

  The camera control unit 170 transmits, to the accessory control unit 440, a normal charging command that instructs the accessory control unit 440 to cause the charging unit 432 to start main charging by normal charging after the process of step S435 is completed (step S435). S436). The normal charging command is a command for requesting to perform main charging at a first charging speed set in advance. After the process of step S436 is completed, the charging control in this steady communication sequence ends.

  By the way, the time required for the charging unit 432 to charge the storage unit (charge storage unit) is longer than the time required to start focusing after the AF control is started. When the flash light emitting unit 430 cannot emit light (not in the ready state), the camera control unit 170 of the present embodiment sets a part of the load unit 30 to the operation prohibited state, and performs the main charging of the charging unit 432. Is given priority over some operations of the load unit 30. As a result, the camera control unit 170 can shorten the time required from when the release button 16 is fully pressed to perform the main shooting with flash emission until the shooting with flash emission is actually enabled.

  As an example, in a shooting situation where the flash light emitting unit 430 needs to emit light, if the AF control is completed and the subject is brought into focus and charging of the storage unit is started, the subject moves while charging. There is a risk of missing a photo opportunity. In the present embodiment, under such circumstances, the operation on the camera 10 side such as AF control is prohibited, and charging of the storage unit of the charging unit 432 is prioritized, so that shooting can be performed without missing a photo opportunity. .

  Note that the camera control unit 170 according to the present embodiment also sets a part of the load unit 30 to the operation prohibited state immediately after the photographing process in which the flash emission function is functioned, as in step S435, and the charging unit 432 Charging is performed with priority over some operations of the load unit 30.

  If the camera control unit 170 determines in step S434 that the flash light emitting unit 430 is in the ready state (step S434; Yes), the camera control unit 170 cancels the operation prohibited state of the load unit 30 (step S437). After releasing the operation prohibition state of the load unit 30, the camera control unit 170 sends a slow charging command to the accessory control unit 440 to instruct the charging unit 432 to start main charging by slow charging. It transmits with respect to 440 (step S438). The slow charging command is a command for requesting that the main charging be performed at a second charging speed that is slower than the first charging speed. In the present embodiment, the second charging speed is a preset fixed value (for example, approximately half of the first charging speed). The accessory control unit 440 designates the second charging speed and causes the charging unit 432 to charge the storage unit (charge storage unit). After the process of step S438 is completed, the charging control in this steady communication sequence ends.

  When the camera control unit 170 determines in step S433 that there is no main charge request (step S433; No), the charging unit 432 is charging based on the charging progress information in the charging state information acquired in step S313. It is determined whether or not (step S439). When the camera control unit 170 determines that the charging unit 432 is not charging in step S439 (step S439; No), the charging control in this steady communication sequence ends.

  If the camera control unit 170 determines in step S439 that the charging unit 432 is charging (step S439; Yes), the flash light emitting unit 430 is based on the light emission propriety information in the charge state information acquired in S313. Is determined to be ready or not (step S440). When the camera control unit 170 determines that the flash light emitting unit 430 is not in the ready state in step S440 (step S440; No), the charging control in this steady communication sequence ends.

  When it is determined in step S440 that the flash light emitting unit 430 is in the ready state (step S440; Yes), the camera control unit 170 transmits a slow charging command to the accessory control unit 440 in the same manner as in step S437 (step S441). . After transmitting the slow charging command to the accessory control unit 440, the camera control unit 170 cancels the operation prohibition state of the load unit 30 as in step S438 (step S442). After the process of step S442 is finished, the charging control in this steady communication sequence is finished.

  As described above, the camera control unit 170 determines the charging state of the charging unit 432 according to a predetermined priority order based on the charging state information as the first process of charging control in the steady communication sequence. For example, the camera control unit 170 first determines whether the charging unit 432 is in a chargeable state among items indicating the charging state (see step S431). Further, after determining whether or not the charging unit 432 is in a chargeable state, the camera control unit 170 determines whether or not there is a charging request for charging the charging unit 432 (steps S431 and S433). reference). The camera control unit 170 determines whether or not the charging unit 432 is being charged after determining whether or not there is a charging request for charging the charging unit 432 (see step S439). In addition, after determining whether or not the charging unit 432 is being charged, the camera control unit 170 determines that the charge amount of the storage unit (charge storage unit) of the charge unit 432 has reached a predetermined charge amount. It is determined whether it is in a state (ready state) (see step S434). The order of priority of the plurality of items indicating the charging state is set so that, for example, an item that has a greater influence on the shooting process of the camera 10 is determined earlier. Thus, since the camera system 1 determines the charging state of the accessory 400 according to a predetermined priority order, the camera system 1 can perform charging control efficiently and is a highly convenient system.

  Moreover, the camera control part 170 controls the priority about the charge process performed in the accessory 400 among the processes which control a control object based on charge state information as 2nd process of charge control in a regular communication sequence. . For example, the camera control unit 170 controls to limit the driving of the optical system 210 (see step S435) when the charging amount of the charging unit 432 is less than a predetermined threshold (less than the light emission permission level). That is, the camera control unit 170 performs control so that the charging process is prioritized over the process performed by the heavy load unit (for example, the optical system driving unit 220) when the flash light emitting unit 430 is not in the ready state. As described above, the camera system 1 according to the present embodiment is a highly convenient system because it does not miss a photo opportunity even in a shooting situation that requires the flash light emission unit 430 to emit light.

  Next, processing in the shooting sequence will be described. First, the processing in the shooting sequence for causing the flash emission function to function will be mainly described.

  FIG. 21 is a diagram illustrating a processing procedure in the imaging sequence. When it is detected that the release button 16 has been operated by the end of the steady communication sequence in step S4, the camera control unit 170 uses the second shooting mode (flash imaging) in which the shooting mode of the camera 10 functions the flash emission function. Whether or not there is is determined based on the shooting mode information (step S500). If the camera control unit 170 detects that the release button 16 has been operated during the process in the steady communication sequence in step S4, the camera control unit 170 performs the process for operating the release button 16 in the steady communication sequence in step S4. Pause until end.

  When the camera control unit 170 determines in step S500 that the shooting mode of the camera 10 is not the second shooting mode (step S500; No), the shooting mode of the camera 10 causes the illumination light emitting function to function. It is determined whether or not (imaging) (step S501). When the camera control unit 170 determines in step S501 that the shooting mode of the camera 10 is the first shooting mode (step S501; Yes), the camera control unit 170 executes a shooting sequence that causes the illumination light emitting function to function (step S11). If the camera control unit 170 determines in step S501 that the shooting mode of the camera 10 is not the first shooting mode (step S501; No), the camera control unit 170 executes a shooting sequence in which neither the flash light emission function nor the illumination light emission function is allowed to function ( Step S12).

  When the camera control unit 170 determines in step S500 that the shooting mode of the camera 10 is the second shooting mode (step S500; Yes), the accessory setting state received from the accessory control unit 440 in the steady communication sequence of step S4. Based on the light emission availability information in the information, it is determined whether or not the flash light emitting unit 430 is in a ready state (step S502). If it is determined in step S502 that the flash light emitting unit 430 is not ready (step S502; No), the camera control unit 170 determines that the release button has not been operated (release button operation result is released) in step S503. After the process of step S503 is completed, the next steady communication sequence is started.

  When it is determined in step S502 that the flash light emitting unit 430 is ready (step S502; Yes), the camera control unit 170 stops (delays) the start of the next steady communication sequence until the end of the imaging sequence. The steady communication stop notification shown is transmitted to the accessory control unit 440 (step S504). The camera control unit 170 stops the steady communication sequence together with the accessory control unit 440 after detecting that the accessory control unit 440 has received the steady communication stop notification transmitted in step S504 (step S505). After the process of step S505 is completed, a shooting sequence for causing the flash emission function to function is started (step S13).

  The camera control unit 170 performs AF control so that the subject designated by the user is in focus after the shooting sequence for causing the flash emission function to start. Further, the camera control unit 170 transmits the above-described monitor charging command to the accessory control unit 440 (step S510), and causes the accessory control unit 440 to start charging the charging unit 432. Charging by the charging unit 432 is continuously performed for a predetermined time as described above.

  The camera control unit 170 performs well-known monitor light emission (pre-light emission) control in order to measure the reflectance of the subject according to the setting state of the camera 10 after the process of step S510 is completed (step S511). In the monitor light emission control, the camera control unit 170 transmits a monitor light emission control signal for executing the monitor light emission to the accessory control unit 440 via the synchronization signal terminal Ts4 and the synchronization signal terminal Tp4. The accessory control unit 440 causes the flash light emission unit 430 to emit light according to the monitor light emission control signal received from the camera control unit 170. The camera control unit 170 performs at least one of AE control and AWB control using a result obtained by imaging (monitor imaging) when the flash light emitting unit 430 performs monitor light emission according to the setting state of the camera 10. Note that at least one of the monitor light emission control, the AE control, and the AWB control may be omitted depending on the setting state of the camera 10.

  The camera control unit 170 performs light emission control (main light emission control) when operation information of the release button 16 (full pressing operation of the release button 16) for instructing execution of image pickup (main image pickup) is detected ( Step S512). The camera control unit 170 transmits a light emission control signal X for requesting light emission of the flash light emitting unit 430 in synchronization with a photographing timing set in accordance with a timing at which operation information (full pressing operation) of the release button 16 is detected. It transmits to the control part 440. The light emission control signal X is maintained at the H level in the accessory 400 before the light emission control is executed, and the camera control unit 170 lowers the light emission control signal X to the L level, thereby adjusting the photographing timing to the accessory control unit. 440 is notified. When the accessory control unit 440 detects that the light emission control signal X is lowered to the L level, the accessory control unit 440 causes the flash light emission unit 430 to emit light according to the timing when the light emission control signal X is lowered to the L level.

  The camera control unit 170 starts exposure to the image sensor 121 in synchronization with the timing at which the flash light emitting unit 430 emits light (step S513). The camera control unit 170 ends the exposure to the image sensor 121 when the exposure time set by the AE control or the like has elapsed after the exposure is started in step S513 (step S514). The camera control unit 170 performs an image capturing process for capturing image data indicating a captured image captured by the image sensor 121 after the process of step S514 ends (step S515). The camera control unit 170 stores the captured image data in the memory 140, for example. The imaging sequence for causing the flash emission function to function after the processing of step S515 ends.

  The next steady communication sequence is started after the photographing sequence is completed. As described above, the accessory control unit 440 transmits charging state information including charging request information, charging progress information, charging availability information, and light emission availability information to the camera control unit 170 in a steady communication sequence. However, since the camera system 1 pauses the steady communication sequence while performing the shooting sequence processing, the accessory control unit 440 pauses the transmission of the charging state information. Therefore, the camera control unit 170 sends a command to the accessory control unit 440 to cause the accessory control unit 440 to perform charging control as necessary (see step S510). In this manner, the camera control unit 170 can cause the accessory control unit 440 to charge without receiving a charge request from the accessory control unit 440 in the shooting sequence. In addition, the accessory control unit 440 receives a command from the camera control unit 170 without transmitting a charge request to the camera control unit 170 in the shooting sequence, and causes the charging unit 432 to charge the storage unit (charge storage unit). Can do.

  Note that the processing in the shooting sequence (step S12) in the third shooting mode in which neither the flash light emission function nor the illumination light emission function is performed includes, for example, the processing from step S513 to step S515. The shooting sequence in the third shooting mode is different from the shooting sequence in which the flash emission function is functioned in that light emission control is not performed. Since the processing in the shooting sequence in the third shooting mode is the same as the shooting sequence for causing the flash emission function to be performed except that the light emission control is not performed, the description thereof will be omitted. The start of the steady communication sequence is stopped during the shooting sequence in the shooting mode, and the steady communication sequence is started after the shooting sequence in the third shooting mode is completed.

  Next, a photographing sequence for causing the illumination light emitting function to function will be described. The accessory control unit 440 controls the light emission processing of the illumination light emitting unit 435 when the shooting mode of the camera 10 is set to the first shooting mode (illumination shooting). The first shooting mode is, for example, one of a shooting mode in which a still image shooting process is performed a plurality of times within a predetermined time, or a shooting mode in which a moving image shooting process is continued for a predetermined time. .

  The accessory 400 turns on the illumination light emitting unit 435 at the timing when the focusing completion information from the camera 10 is received as the first processing in the imaging sequence for causing the illumination light emitting function to function. The AE control and AWB control are performed in a state where the illumination light emitting unit 435 is lit.

  The camera body 100 extends the lighting time beyond the longest lighting time when the release button 16 is fully pressed at the end of the longest lighting time as the second processing in the shooting sequence for causing the illumination light emitting function to function. Let The longest lighting time is, for example, a time set in advance as an upper limit of an allowable range of continuous lighting time. As an initial condition for the second process, the camera body 100 performs the above-described steady communication performed before the start of the shooting sequence in the first shooting mode for causing the illumination light emitting function to function (before the execution of the flowchart of FIG. 22). In the sequence (for example, see step S309 in FIG. 15), the illumination light emitting function characteristic information is received from the accessory control unit 440. The characteristic information of the illumination light emitting function includes information indicating the longest lighting time (information indicating a period (time) in which the illumination light emitting unit 435 can be continuously turned on).

  FIG. 22 is a diagram illustrating a processing procedure in an imaging sequence for causing the illumination light emitting function to function. When the camera control unit 170 detects an operation (half press) of the release button 16 indicating that the preparation for imaging is started after the imaging sequence of the first imaging mode in which the illumination light emission function is activated (step S601), AF control is started (step S602). The camera control unit 170 detects the in-focus state by the AF sensor, and after the AF control is finished (step S603), the in-focus completion indicating completion of the in-focus operation for the desired subject (having reached the in-focus state). Information (focus state information) is transmitted to the accessory control unit 440 (step S604). After receiving the focus state information (Step S605), the accessory control unit 440 causes the illumination light emitting unit 435 to start lighting (Step S606). At the time when the photographing sequence is started, the time during which the accessory control unit 440 lights the illumination light emitting unit 435 (normal lighting time) is set shorter than the longest lighting time of the illumination light emitting unit 435 by a predetermined time. Has been.

  The camera control unit 170 starts AE control and AWB control (step S607) after the process of step S604 ends, and performs AE control and AWB control in a state where the illumination light emitting unit 435 illuminates the subject. The camera control unit 170 detects an operation (full press) of the release button 16 indicating that AE control and AWB control are completed (step S608) and imaging is requested (step S609). After the process of step S609 is completed, the camera control unit 170 determines whether imaging can be completed within the longest lighting time (step S610).

  In step S610, the camera control unit 170 detects the timing at which focusing completion (state) information is transmitted (step S604), the normal lighting time, and the operation (full press) of the release button 16 in step S609 (shooting). Based on the start time), it is determined whether or not imaging can be completed within the normal lighting time. For example, the camera control unit 170 obtains the lighting time remaining in the illumination light emitting unit 435 when the operation (full press) of the release button 16 is detected, and calculates the time required to complete the imaging. By comparing, it is determined whether imaging can be completed within the normal lighting time.

  When it is determined that the imaging can be completed within the normal lighting time (step S610; Yes), the camera control unit 170 starts exposure to the imaging element 121 (step S615).

  When it is determined that imaging cannot be completed within the normal lighting time (step S610; No), the camera control unit 170 extends the lighting time from the normal lighting time to a time equal to or shorter than the longest lighting time, and further completes the imaging. It is determined whether or not it is possible (step S611). If the camera control unit 170 determines in step S611 that imaging cannot be completed within a time longer than the normal lighting time (step S611; No), the imaging sequence ends. If the camera control unit 170 determines in step S611 that imaging can be completed within a time that is longer than the normal lighting time (step S611; Yes), the camera control unit 170 controls the extension information indicating that the lighting time is extended as an accessory. It transmits to the part 440 (step S612). The accessory control unit 440 receives the extension information (step S613). The camera control unit 170 starts exposure on the image sensor 121 after the process of step S612 ends (step S615).

  The camera control unit 170 ends the exposure on the image sensor 121 when the exposure time set by the AE control has elapsed after the exposure is started in step S615 (step S616). The camera control unit 170 generates image data of a captured image captured by the image sensor 121 after the processing of step S616 is completed, and stores the generated image data in the memory 140 or the like (step S617). The camera control unit 170 transmits exposure end information indicating that the exposure is completed to the accessory control unit 440 after the processing of step S617 is completed (step S618).

  The accessory control unit 440 determines whether or not the extension information has been received from the camera control unit 170 after starting the illumination light emitting unit 435 in step S606 (step S613). When the accessory control unit 440 determines in step S613 that the extension information has been received from the camera control unit 170 (step S613; Yes), the lighting time of the illumination light emitting unit 435 exceeds the normal lighting time, and the illumination light emitting unit The extension condition of the illumination light emitting unit 435 is set so that the lighting of 435 is continued.

  When it is determined in step S613 that the extension information is not received from the camera control unit 170 (step S613; No), the accessory control unit 440 does not change the lighting time of the illumination light emission unit 435 and does not change the illumination light emission unit 435. Is kept on. After receiving the exposure end information from the camera control unit 170 (step S619), the accessory control unit 440 turns off the illumination light emitting unit 435 (step S620).

  The accessory control unit 440 turns off the illumination light emitting unit 435 when the lighting time of the illumination light emitting unit 435 reaches the longest lighting time without receiving the extension information from the camera control unit 170. After the process of step S618 and the process of step S620 are completed, the imaging sequence using the illumination light emitting function is completed.

  In the first process performed in the above procedure, the accessory control unit 440 turns on the illumination light emitting unit 435 under the control of the camera control unit 170 when the camera control unit 170 detects the in-focus state. (Step S606). For example, the accessory control unit 440 turns on the illumination light emitting unit 435 in accordance with the focusing completion information (Step S605) received from the camera control unit 170 (Step S606). In-focus completion information is information indicating an in-focus state.

  Further, the camera control unit 170 starts at least one of AE control for adjusting the exposure amount and AWB control for adjusting the color tone in a state where the subject is illuminated by the illumination light emitting unit 435 (step S608). The AE control and the AWB control are performed based on information indicating the light emission characteristics of the illumination light emitting unit 435. Thereby, the camera system 1 images the subject in a state where the influence on the exposure amount (brightness) and the influence on the color tone (color tone) due to the light irradiated to the subject from the illumination light emitting unit 435 are taken into account. Can do. In addition, since the camera system 1 is configured to start the illumination light emitting unit 435 after the accessory control unit 440 receives the focusing completion information (the emission start timing is delayed from the AF start timing). Compared to the case where illumination light is emitted simultaneously with the AF start timing (half-press operation time), the period during which illumination light can be emitted (lighted) in parallel with the main photographing operation can be extended during the main photographing period. For this reason, it is possible to reduce the risk that the lighting of the illumination light emitting unit 435 ends before the photographing operation is completed and the second half of the photographing during the photographing period falls short of the illumination light amount (underexposure). Thus, the camera system 1 is a highly convenient system.

  In the second process performed in the above-described procedure, the camera control unit 170 controls the lighting time of the illumination light emitting unit 435 to be extended from the normal lighting time according to the shooting start time. . The longest lighting time is set in advance according to the amount of heat generated by the illumination light source 437, for example. The normal lighting time is set in advance according to the longest lighting time. The longest lighting time is set in advance according to the amount of heat generated by the illumination light source 437, for example. The accessory control unit 440 turns on the illumination light emitting unit 435 within a preset normal lighting time. The accessory control unit 440 performs control so that the lighting time of the illumination light emitting unit 435 is extended from the normal lighting time according to the photographing start time. Hereinafter, the second process will be described with numerical examples.

  FIG. 23 is a diagram illustrating timing for performing each process of control for extending the lighting time. FIG. 23A shows the timing of performing each process when shooting is completed within the normal lighting time. FIG. 23B illustrates the timing of performing each process when shooting is completed by extending the lighting time within the longest lighting time. In FIG. 23A and FIG. 23B, symbol Tn indicates the time when a normal lighting time (for example, 6 seconds) has elapsed from the shooting start time, and symbol Tm indicates the longest lighting time (for example, 8 seconds) from the shooting start time. ). The shooting time (shooting time) is the time from the start of exposure (step S615) to the end of exposure (step S616), and is a preset time (for example, 2 seconds).

  The camera system 1 of the present embodiment captures a plurality of frames of images during the shooting time. In addition, the camera system 1 according to the present embodiment performs pre-capture prior to a desired period during which shooting processing (shown as “shooting” in FIG. 23) is performed. The pre-capture is a process for starting capturing an image before the release button 16 is fully pressed. Here, when the camera system 1 detects that the release button 16 is fully pressed, it is assumed that imaging is started before the time when the release button 16 is fully pressed. In other words, the camera system 1 captures an image captured at a predetermined time following the time when the release button 16 is fully pressed and a predetermined time after the time when the release button 16 is detected to be fully pressed. The captured image is assumed to be an image captured in the imaging process.

  First, an example in which the photographing process is completed without extending the lighting time will be described. As shown in FIG. 23A, the camera 10 starts AF control at time t10 according to the time when it is detected that the release button 16 is half-pressed. Moreover, the camera 10 lights the illumination light emission part 435 of the accessory 400 according to the time when AF control was completed in the time t11 after the time t10. The camera 10 starts at least one of AE control and AWB control at time t11, and performs at least one of AE control and AWB control in a state where, for example, the subject is illuminated by the illumination light emitting unit 435.

  The camera 10 of the present embodiment starts pre-capture at time t12 after time t11 according to the time when AE control and AWB control are completed. The camera 10 starts photographing processing at time t13 after time t12. As described above, it is assumed that the camera 10 starts shooting before the time when the release button 16 is detected to be fully pressed. That is, the time when the camera 10 detects that the release button 16 has been fully pressed is any time between the time t13 when the photographing process is started and the time t14 when the photographing process is ended. In this example, it is assumed that the imaging start time t13 is, for example, the time when 3 seconds have elapsed from the lighting start time (t11). In this case, if the shooting time is 2 seconds, the shooting time ends at time t14 (second time) when 5 seconds have elapsed from the lighting start time. In this case, the photographing process ends by the time Tn (first time) when the normal lighting time (6 seconds) elapses from the lighting start time t10. In such a case, the camera 10 ends the photographing process and turns off the illumination light emitting unit 435 at time t14.

  Next, an example in which the normal lighting time is extended to complete the photographing process will be described. As shown in FIG. 23B, the camera 10 starts AF control at time t20 according to the time when it is detected that the release button 16 is half-pressed. Moreover, the camera 10 lights the illumination light emission part 435 of the accessory 400 according to the time when AF control was completed in the time t21 after the time t20. In addition, the camera 10 starts at least one of AE control and AWB control at time t21, and performs at least one of AE control and AWB control in a state where the subject is illuminated by the illumination light emitting unit 435, for example. In addition, the camera 10 starts pre-capture at a time t22 after the time t21 according to the time when the AE control and the AWB control are completed.

  The camera 10 of the present embodiment completes the shooting process from the time from the shooting start time t23 until the time when the release button 16 is fully pressed and the time when the release button 16 is detected to be fully pressed. The time until the shooting end time t24 to be performed is determined in advance. In this example, it is assumed that the imaging start time t23 is, for example, the time when 5 seconds have elapsed from the lighting start time (t21). In this case, if the shooting time is 2 seconds, the shooting time ends at time t24 (second time) when 7 seconds have elapsed from the lighting start time. In this case, the photographing process cannot be completed by the time Tn (first time) when the normal lighting time (6 seconds) elapses from the lighting start time t20, but the longest lighting time (8) from the lighting start time t20. (Second) can be completed by time Tm. In such a case, the camera 10 extends the lighting time of the illumination light emitting unit 435 and completes the shooting process. Thus, the camera system 1 extends the lighting time according to the shooting start time. It is a highly convenient system.

  Next, an end process for ending the process in the accessory 400 will be described. In the control for supplying power (see FIG. 14), the camera 10 starts supplying power to the accessory 400 (see step S103). Further, when it is determined that the power consumption of the accessory 400 is not supplied from the power source mounted on the accessory 400 (see step S250), the camera 10 continues to supply power to the accessory 400. The accessory 400 of the present embodiment outputs a signal (activation detection level DET) indicating that the processing performed by the accessory 400 is finished to the camera 10. The activation detection level DET shown in FIG. 9 is maintained at the L level when the first switch unit 465 is closed and the second switch unit 470 is closed. The activation detection level DET becomes H level when at least one of the first switch unit 465 and the second switch unit 470 is cut off. For example, when the user removes the accessory 400 from the camera 10, when the user operates the first operation unit 424 (see FIGS. 2 and 9) to release the accessory 400 from the camera 10, The switch unit 465 interrupts the circuit. As a result, the activation detection level DET becomes the H level. In addition, when the user performs a function-off operation on the second operation unit 471 (see FIGS. 2 and 9) of the second switch unit 470, the second switch unit 470 interrupts the circuit of the accessory 400. This also activates the activation detection level DET. The accessory control unit 440 of the accessory 400 starts the end process after providing the camera 10 with the activation detection level DET (H level) indicating that the process of the accessory 400 is ended. Hereinafter, an example of the processing flow of the termination process will be described.

  FIG. 24 is a diagram illustrating a processing procedure for ending the processing in the accessory 400. The camera control unit 170 continuously detects the potential of the activation state detection terminal Tp7, and repeatedly performs a determination process for determining whether or not the activation detection level DET is the L level at a predetermined timing (predetermined cycle). Yes. That is, the camera control unit 170 performs a determination process for determining whether or not the activation detection level DET is the L level (step S702). In addition, when the camera control unit 170 determines in step S702 that the activation detection level DET is L level (step S702; Yes), the camera control unit 170 determines that the accessory 400 is attached to the camera 10. The process returns to the determination process in step S702.

  When the camera control unit 170 determines in step S702 that the activation detection level DET is not the L level (step S702; No), the power supply stop information indicating that the power supply from the camera 10 to the accessory 400 is stopped, It transmits to the accessory control part 440 (step S703). The camera control unit 170 transmits power supply stop information to the accessory control unit 440 (step S703), and after a predetermined power supply period that has been set in advance has elapsed from the time of transmission of the power supply stop information. At the timing, the accessory power supply control unit 33 is controlled to stop the supply of power from the camera 10 to the accessory 400 (step S704). That is, the accessory control unit 440 supplies the activation detection level DET to the camera control unit 170 or receives power supply stop information from the camera, and at the same time, the power supply from the camera 10 is not cut off, but for a while (predetermined above-described predetermined level). The power supply from the camera 10 is maintained during the power supply period.

  The accessory control unit 440 performs a termination process described below for a short time (during the above-described predetermined power supply period) before the supply of power from the camera 10 to the accessory 400 is stopped. When the accessory control unit 440 receives the power supply stop information from the camera 10 (step S705), the accessory control unit 440 starts an end process for ending the process of the accessory 400 (step S706). This end processing is information temporarily stored in the storage unit 444 in the accessory 400 and indicating various states of the accessory 400 at that time (for example, light emission history information such as the number of times of light emission, and a set light emission mode. Is stored (saved) in the nonvolatile memory 445 (storage unit 444). The accessory control part 440 complete | finishes a process after step S706 (step S707).

  As described above, the camera system 1 performs a process (the above-described end process) necessary for ending the process of the accessory 400 when the user tries to remove the accessory 400 from the camera 10, for example. It is a highly convenient system that can save settings and history.

  The technical scope of the present invention is not limited to the above embodiment. At least one of the components described in the above embodiments may be omitted. The components described in the above embodiments can be combined as appropriate. In the above embodiment, as accessories, an accessory having a flash emission function (ie, a flash device), an accessory having an illumination emission function (ie, an illumination device), an accessory having a GPS function (ie, a positioning device), and a multi-light commander function Although the apparatus (namely, commander apparatus) provided with was mentioned, accessories other than this may be sufficient. For example, if the open terminals Tp10 and Ts10 are made to function as terminals for transferring image data from the camera to the accessory, the accessory can be used as an accessory having an electronic viewfinder function (ie, EVF), or image data can be externally transmitted. It is also possible to make an accessory (wireless transmitter) with a transmitter function for transmitting to other servers. Further, if the open terminals Tp10 and Ts10 are made to function as terminals for transferring audio data from the accessory to the camera, the accessory can be an accessory (that is, a microphone) having a microphone function.

  As described with reference to FIG. 14, when the camera control unit 170 determines that the battery is mounted on the accessory 400 (step S250: Yes), the power supply to the accessory 400 is stopped (step S250). S251), but is not limited to this. For example, the camera control unit 170 controls to stop or suppress power supply from the camera 10 (camera body 100) side to the accessory 400 side based on a predetermined condition other than whether or not a battery is mounted on the accessory 400. May be performed. The camera control unit 170 stops or restricts the supply of power to the accessory 400 side, so that the accessory 400 can perform an operation other than an operation assumed in advance on the camera 10 (camera body 100) side (referred to as an unexpected operation). When performed, at least a portion of the operation of the accessory 400 can be prohibited or restricted. Hereinafter, such a modification will be described.

[Modification 1]
First, Modification 1 will be described. FIG. 25 is a diagram illustrating a processing procedure in the initial communication sequence according to the first modification. The series of processes in the modified example 1 is the series described with reference to FIG. 12 in that it is determined in step S260 whether or not reception of information from the accessory control unit 440 has been normally performed after the process of step S204. It is different from processing.

  In the first modification, the camera control unit 170 determines whether or not the information from the accessory control unit 440 has been normally received following the reception of the accessory initial state information from the accessory control unit 440 in step S204, for example. Determination is made (step S260).

  Specifically, in step S260, the camera control unit 170 over- or deficient information (for example, battery presence / absence information, function type information) of the item specified by the transmission request command C1 in step S201 in the accessory initial state information received in step S204. If it is included, it is determined that the information has been normally received (step S260: Yes). And the camera control part 170 performs the process after step S204A similarly to having demonstrated using FIG.12 and FIG.13.

  In addition, in step S260, the camera control unit 170 cannot receive the accessory initial state information from the accessory control unit 440 in step S204, and the accessory initial state information received in step S204 is the transmission request command C1 in step S201. When the information of at least one item of the designated items is not included, it is determined that the information has not been received normally (step S260: No). And the camera control part 170 performs the process which stops supply of the electric power with respect to the accessory 400 (step S261). In this case, the camera control unit 170 ends the initial communication sequence, for example. Further, as described with reference to FIG. 24, the camera control unit 170 notifies the accessory 400 that power supply is stopped (step S703), and then controls the accessory power supply control unit 33 (see FIG. 7). Then, the supply of power is stopped (step S704).

  In the process shown in the first modification, the camera control unit 170 can detect that the accessory 400 has performed an unexpected operation when information that has been assumed in advance cannot be received from the accessory 400 in the initial communication sequence. . Based on the detection result, the camera control unit 170 stops the supply of power from the camera 10 to the accessory 400, and thus it is possible to suppress in advance the occurrence of an erroneous operation or the like in the unpredictable accessory 400.

  By the way, the number of bytes (first number of bytes) of information to be transmitted by the accessory control unit 440 is determined according to the request content from the camera control unit 170. Therefore, the camera control unit 170 may perform the determination in step S260 based on the number of bytes of information received from the accessory control unit 440 (second number of bytes). For example, when the second byte number is the same as the first byte number, the camera control unit 170 determines that the information has been received normally, and the second byte is different from the first byte number. It may be determined that the information has not been received normally.

  The camera control unit 170 can also make the determination in step S260 based on the content of information received from the accessory control unit 440. For example, the camera control unit 170 transmits information when the information received by the camera control unit 170 in step S204 does not include information on the item specified by the transmission request command C1, or when the information is different from a predetermined format. In at least one of the cases where information other than the item specified by the request command C1 is included, it may be determined that the information has not been normally received. For example, in step S204, it is assumed that the camera control unit 170 receives battery presence / absence information and function type information, and if neither the battery “present” information nor the battery “none” information is received, If at least a part of the type information is not received, it may be determined that the information has not been normally received.

  Note that in the first modification shown in FIG. 25, the camera control unit 170 determines whether or not reception of information (step S204) has been normally performed with respect to the accessory initial state information to be received. The unit 170 may determine whether information has been normally received for information other than the accessory initial state information. For example, in each process of steps S209 and S214 shown in FIG. 12, and in each process of steps S220, S224, S229, S233, and step S241 shown in FIG. 13, the camera control unit 170 receives information from the accessory 400. Yes. The camera control unit 170 may determine whether or not the information has been normally received each time information is received in each of the processes for receiving the information.

In addition, the camera control unit 170 includes at least one of the information requested by the camera control unit 170 among the extended function characteristic information, the illumination light emitting function initial state information, the settable information, the profile information, the illumination profile information, and the accessory setting state information. When the item information cannot be received from the accessory control unit 440, it may be determined that the accessory 400 is in a state of performing an operation (malfunction) other than the assumed operation.
Here, the characteristic information of the extended function is information indicating the characteristic of the extended function such as a GPS function or a multi-light commander function. The extended function characteristic information is information received by the camera control unit 170 in step S209 when it is determined in step S205 that the accessory 400 has the extended function.
The initial state information of the illumination light emission function is information indicating an initial state before changing and setting the characteristics of the illumination light emission function. The initial state information of the illumination light emitting function is information received by the camera control unit 170 in step S214 when it is determined in step S210 that the accessory 400 has the illumination light emitting function.
The settable information is information indicating a function whose characteristics can be set among the functions of the accessory 400. The settable information is information received by the camera control unit 170 in step S220.
The profile information is information indicating the profile of the accessory 400 (characteristics of the flash emission function). The profile information is information received by the camera control unit 170 in step S224.
The illumination profile information is information indicating the light emission characteristics of the illumination light emitting unit 435. The illumination profile information is information received by the camera control unit 170 in step S229 when it is determined in step S225 that the accessory 400 has an illumination light emitting function.
The accessory setting state information is information including setting information indicating the setting state of the flash light emitting function, setting information indicating the setting state of the illumination light emitting function, charging state information indicating a control state of control for the charging unit 432, and the like. The accessory setting state information is information received by the camera control unit 170 in steps S233 and S241.
For at least one of these pieces of information, the camera control unit 170 may stop supplying power to the accessory 400 in the same manner as step S261 when it is determined that the information has not been received normally. In addition, when it is determined that the information has not been normally received, the camera control unit 170 determines that the information has been normally received, and may perform subsequent processing similar to the above embodiment. Good. Note that the camera control unit 170 does not have to determine whether information has been normally received with respect to one or more items of information selected from the various types of information.

[Modification 2]
Next, Modification 2 will be described. FIG. 26 is a diagram illustrating a processing procedure in power supply control according to the second modification. The series of processes in the modified example 2 is the series described with reference to FIG. 14 in that it is determined in step S262 whether or not the reception of information from the accessory control unit 440 has been normally performed after the process of step S250. Different from processing.

  In the second modification, if the camera control unit 170 determines in step S250 that the accessory 400 does not have a battery (step S250: N0), whether or not the battery “No” information has been normally received. Is determined in step S262. In step S262, when the battery “no” information is received in step S204, the camera control unit 170 determines that the information has been normally received (step S262: Yes), and started in step S103. The power supply to the accessory 400 is continued. In step S262, if the camera control unit 170 has not received the battery “none” information in step S204 or has received information different from the preset format, the information is not normally received. (Step S262: No), and the power supply started in Step S103 is stopped in Step S251.

  In this way, the camera control unit 170 can detect that the accessory 400 has performed an unexpected operation. Based on the detection result, the camera control unit 170 stops the supply of power to the accessory 400, so that the malfunction of the accessory 400 can be suppressed. Note that the determination in step S262 can be performed prior to the determination in step S250.

[Modification 3]
Next, Modification 3 will be described. FIG. 27 is a diagram illustrating a charging control process according to the third modification. The series of processes in the modified example 3 is the series described with reference to FIG. 20 in that it is determined in step S263 whether or not information has been normally received from the accessory control unit 440 after the process of step S430. It is different from processing.

  In Modification 3, when the determination process in step S263 is determined in step S430 based on the charge availability information that the charging unit 432 is not chargeable (step S430: No), there is no monitor charge request in step S431. If it is determined based on the charging request information (step S431: No), in step S439, if it is determined based on the charging progress information that the charging unit 432 is not charging (step S439: No), in step S440 In each case where it is determined that the flash light emitting unit 430 is not in the ready state based on the light emission availability information (step S440; No), the process is executed.

  In step S263, the camera control unit 170 receives information on the charge availability information, the charge request information, the charging progress information, and the light emission availability information included in the charge status information among the accessory setting status information received in step S313. It is determined whether or not reception has been performed normally.

  In the third modification, the camera control unit 170 determines whether or not the correct information is received based on the consistency of the contents indicated by the charge availability information, the charge request information, the charge progress information, and the light emission availability information (accessory). Whether or not is operating normally). As an example, in the case where the charging amount of the charging unit 432 is less than the above-described light emission permission level, if it is normal (normal state), it indicates that the flash light emitting unit 430 is not in the ready state in the light emission propriety information. It is assumed that the request information indicates that the main charging request is made. However, in such a case, if the charging request information does not indicate that the charging request is not made despite the fact that the light emission propriety information indicates that it is not in the ready state, the camera control unit 170 displays the correct information. It is determined that reception has not been performed (the accessory 400 is performing an unexpected operation) (step S263: No), and power supply to the accessory 400 is stopped in step S264. In addition, when it is determined in step S263 that the contents indicated by the charge control information, the charge request information, the charge progress information, and the light emission control information are consistent in step S263 (step S263: Yes), The charge control in the steady communication sequence is terminated.

  In this manner, the camera control unit 170 can detect that the accessory 400 has performed an unexpected operation by determining whether or not a plurality of pieces of information received from the accessory control unit 440 are consistent. . Based on the detection result, the camera control unit 170 stops the supply of power to the accessory 400, and thus it is possible to suppress the occurrence of a malfunction or the like on the accessory 400 side in advance.

  Note that the camera control unit 170 determines whether or not the information has been normally received in the same manner as described in the first modification, as to whether charging is possible, charging request information, charging progress information, and light emission propriety information. May be performed based on one or both of the number of bytes and the content. In addition, when information indicating the charge amount (charge rate) of the charging unit 432 is supplied from the accessory control unit 440 to the camera control unit 170, the camera control unit 170 includes the charge availability information, the charge request information, the charging progress information, Further, it may be detected that the accessory 400 is performing an unexpected operation by determining consistency with at least one of the light emission availability information and the charging rate (charge amount) of the charging unit 432. For example, when the charging rate (charge amount) of the charging unit 432 is equal to or higher than the light emission permission level (ready state), but the chargeability information indicates that the chargeability information is not ready, the camera control unit 170 displays the correct information. It may be determined that reception has not been performed. For example, the accessory control unit 440 transmits charging rate information indicating the charging rate of the charging unit 432 to the camera control unit 170 as part of the accessory setting state information in a steady communication sequence (for example, step S313 in FIG. 15). Then, the camera control unit 170 may determine the consistency between the light emission availability information and the charge rate information after the determination process (for example, step S440, step S434) as to whether or not the camera is in the ready state.

[Modification 4]
Next, Modification 4 will be described. Modified example 4 is a modified example related to the charging control process as in modified example 3. The processing procedure is the same as modified example 3 shown in FIG. In Modification 4, instead of evaluating (determining) the consistency of the charge state information based on the charge availability information and the charge request information, information indicating the power supplied from the camera 10 to the accessory 400 and the charge state information By determining the consistency, it is determined whether or not the accessory 400 is performing an unexpected operation.

  Specifically, in Modification 4, the accessory power supply control unit 33 in the camera 10 illustrated in FIG. 7 detects power (for example, a current value) supplied from the camera 10 to the accessory 400, and information indicating the detected power. (Hereinafter referred to as supply power detection information) is supplied to the camera control unit 170. The camera control unit 170 assumes that the accessory 400 is in the case where the operation state (charge state) of the accessory 400 indicated by the charge state information received from the accessory control unit 440 does not match the power supply amount indicated by the supply power detection information. It is determined that an outside operation is being performed. For example, the camera control unit 170 has a predetermined amount of power supplied to the accessory 400 even though the charging unit 432 should not be charging (the accessory control unit 440 on the accessory 400 side does not include normal operation). It is determined that the accessory 400 is performing an unexpected operation. Specifically, the charge request information in the charge state information indicates that “a charge request is not made” and the power supply amount indicated by the supply power detection information is not in charge. When it exceeds, the camera control part 170 determines with the accessory 400 performing unexpected operation | movement. When it is determined that the accessory 400 is performing an unexpected operation, the camera control unit 170 stops supplying power to the accessory 400 as described in the first modification.

  In this way, the camera control unit 170 detects that the accessory 400 has performed an unexpected operation by determining the consistency between the information received from the accessory control unit 440 and the supplied power detection information. Based on the detection result, the camera control unit 170 stops the supply of power to the accessory 400, and thus it is possible to suppress the occurrence of a malfunction or the like on the accessory 400 side in advance.

  In the first to fourth modifications described above, when the camera control unit 170 determines that the accessory 400 performs an unexpected operation, the camera control unit 170 stops supplying power to the accessory 400, but supplies the accessory 400 to the accessory 400. The upper limit value of power may be limited (reduced) to a preset value, or at least a part of the functions of the accessory 400 may be prohibited. For example, when the function indicated by the function type information received from the accessory 400 does not include the illumination light emission function in the initial communication sequence described with reference to FIG. The illumination light emitting function may be disabled by not transmitting to.

  When the camera control unit 170 cannot receive the information on the item requested from the accessory control unit 440, the camera control unit 170 requests the accessory control unit 440 to transmit this information again (retry), and the requested item information is obtained. When reception is not possible, the supply of power to the accessory 400 may be restricted or stopped, or at least a part of the function of the accessory 400 may be restricted. The number of retries may be one or a plurality of predetermined times.

  In addition, the camera control part 170 may alert | report operation | movement (malfunction) of the accessory 400, for example, when it determines with operation | movement other than the operation | movement which the accessory 400 assumes. In addition, the camera control unit 170 may notify that the restriction or stop is performed when the supply of power to the accessory 400 is restricted or stopped, or at least a part of the function of the accessory 400 is restricted. . The above notification can be performed, for example, by displaying one or both of characters and images on the display unit 102 shown in FIG.

  In the accessory 400, the activation state providing terminal Ts 7 is connected to the reference line via the MSW 465 and the PCSW 470 so as to be connected to the ground line 42 via the reference potential line 480 when the accessory 400 is attached to the camera 10. It may be connected to the potential line 480.

[Description of accessories with GPS function]
Next, an example of the accessory 600 will be described.
The camera system 1a shown in FIGS. 28 and 29 includes a camera 10a and an accessory 600. The accessory 600 of the present embodiment has a GPS function and can perform position measurement. The camera 10a can communicate with the accessory 600 to control the accessory 600. For example, the camera system 1a can measure the imaging position using the accessory 600 and store the imaging position information measured in association with the image data captured by the camera 10a in the memory 140 (see FIG. 6). FIG. 28 is a diagram illustrating an appearance of the camera system 1a according to the present embodiment. FIG. 29 is a view of the camera system 1a of the present embodiment as viewed from the opposite side to FIG.

The appearance of the camera 10a is the same as that of the camera 10 shown in FIGS. The components inside the camera 10a are the same as those of the camera 10 shown in FIG. Therefore, in the following description, the same name and code | symbol are attached | subjected about the same component, and the description may be simplified or abbreviate | omitted.
The accessory 600 includes an accessory body 610 that accommodates various components, and a second connector 620 provided on the accessory body 610. The accessory 600 is detachable from the shoe seat 15. The accessory 600 is attached to the shoe seat 15 and fixed to the camera body 100a. The accessory 600 can be electrically connected to the shoe seat 15 via a cable or the like, and may be held by a device different from the camera body 100a.
The accessory 600 is attached to the shoe seat 15 by inserting the second connector 620 into the opening 24 of the shoe seat 15 and sliding it in a predetermined direction (+ Y direction) (see FIGS. 28 and 29).

FIG. 30 is a diagram illustrating the second connector 620 of the present embodiment according to the present embodiment.
As shown in FIG. 30, the second connector 620 includes a bottom part 621 and a terminal part 623 provided on the bottom part 621. The terminal portion 623 has a plurality (12 pieces) of terminals Ts1 to Ts12.
The structure of the second connector 620 is the same as that of the connector 420 of the accessory 400 (see FIG. 5). The terminal portion 623 has a structure similar to that of the terminal portion 423 (see FIG. 5). Therefore, in the following description, the same name and code | symbol are attached | subjected about the same component, and the description may be simplified or abbreviate | omitted.

  FIG. 31 is a block diagram showing a configuration of the accessory 600 of the present embodiment. As shown in FIG. 31, the accessory 600 includes a terminal unit 623 (second information communication unit), an operation unit 630, an LED 635, a data terminal 640 (first information communication unit), a GPS module unit 650 (reception unit, positioning unit, Or first data generation unit), GPS control unit 660 (second data generation unit, control unit, or accessory control unit), buffer memory 663 (second storage unit), charging unit 664, secondary battery 665, and power supply unit 670. The GPS module unit 650 includes an antenna 651, a GPS calculation unit 652, and an RTC 653.

  The accessory 600 of this embodiment operates with the electric power PWR supplied via the terminal part 25 of the camera 10a. In a state where the power PWR is not supplied from the camera 10a, the accessory 600 only holds the data stored in the storage unit 652a (first storage unit) of the GPS module unit 650 and the operation of the RTC 653 by the secondary battery 665. Do.

  When the camera 10 a detects that the accessory 600 is attached (attached state), the camera 10 a starts supplying power to the accessory 600 via the terminal unit 25. The detection of the attachment of the accessory 600 of the camera 10a is the same as the detection of the attachment state of the accessory 400, and a detailed description thereof will be omitted (see FIG. 9). When the accessory 600 is attached to the camera 10a, the activation state detection terminal Tp7 of the camera 10a is electrically connected to the terminal 630a via the activation state providing terminal Ts7 and the terminal 630b of the accessory 600. Since the terminal 630a is connected to GND (reference potential), the potential of the activation state detection terminal Tp7 of the camera 10a becomes the reference potential, and the camera 10a detects the attachment state of the accessory 600. The accessory 600 can be removed from the camera 10 a by operating the operation unit 630.

  The operation unit 630 is a lock release lever for releasing the lock of the accessory 600 fixed (locked) to the shoe seat 15. The operation unit 630 is a mechanical switch and includes a terminal 630a, a terminal 630b, and a terminal 630c. When the accessory 600 is unlocked by the operation unit 630 and the accessory 600 is removed from the shoe seat 15, the electrical connection between the terminal 630a and the terminal 630b is disconnected. When the electrical connection between the terminal 630a and the terminal 630b is cut, the potentials of the activation state detection terminal Tp7 and the activation state providing terminal Ts7 become higher than the reference potential, and the camera 10a detects that the accessory 600 has been removed. .

  In addition, the GPS control unit 660 detects the state of the operation unit 630 (whether or not the terminals 630a and 630b are electrically connected) by a change in the potential of the terminal 630c. For example, since the terminal 630c is connected to the power supply terminal group (Ts11, Ts12) via the pull-up resistor 666, the mechanical switch of the operation unit 630 is not closed (the accessory 600 is not fixed to the shoe seat 15). ), The potential of the terminal 630c becomes H level (higher than the reference potential). On the other hand, when the mechanical switch of the operation unit 630 is closed (the accessory 600 is fixed to the shoe seat 15), since the terminal 630c is grounded, the potential of the terminal 630c becomes L level (reference potential). The GPS control unit 660 detects the state of the operation unit 630 by detecting a change in the potential of the terminal 630c.

Next, the GPS module unit 650 will be described.
The GPS calculation unit 652 receives GPS information (navigation message) necessary for positioning and timing from the positioning satellite (GPS satellite) via the antenna 651. The GPS calculation unit 652 extracts information (GPS time information) indicating the GPS time from the GPS information (navigation message) received from the positioning satellite. When the GPS time information can be extracted from the GPS information, the GPS calculation unit 652 matches the time information of the RTC 653 with the GPS time. When GPS information cannot be received, or when GPS information cannot be extracted even if GPS information can be received, the GPS calculation unit 652 uses the time information of the RTC 653 instead of the GPS time information. The storage unit 652a may be a flash memory.
In addition, the GPS calculation unit 652 generates first GPS information (first data) from the GPS information, and outputs the first GPS information to the GPS control unit 660. The first GPS information is, for example, NMEA data having a communication protocol such as a GPS receiver defined by NMEA (National Marine Electronics Association). The GPS calculation unit 652 stores the first GPS information in the storage unit 652a.
In addition, the GPS calculation unit 652 outputs information indicating the positioning operation state of the GPS module unit 650 (whether or not positioning is completed) to the GPS control unit 660. The GPS control unit 660 displays (lights up or blinks) the positioning operation state of the GPS module unit 650 by controlling the LED 635.

  An RTC (real time clock) 653 generates (measures) time information based on, for example, a clock signal generated by a crystal oscillator, and outputs the generated time information to the GPS calculation unit 652. When the accessory 600 is not attached to the camera 10a, the RTC 653 continues timing using the power supplied from the secondary battery 665.

  The LED 635 displays the positioning operation state of the GPS module unit 650 based on the control of the GPS control unit 660. The LED 635 can emit light of a plurality of colors such as red and green. For example, the LED 635 blinks red when the accessory 600 is attached to the camera 10a and GPS information from three positioning satellites is acquired by positioning by the GPS module unit 650. When GPS information from four or more positioning satellites has been acquired by positioning by the GPS module unit 650, the light turns green.

  The data terminal 640 is, for example, a USB (Universal Serial Bus) terminal. The accessory 600 can acquire commands and data from a personal computer by connecting the data terminal 640 to an external device such as a personal computer (PC) via a connection cable. In addition, the accessory 600 transmits commands and data output from the GPS control unit 660 to the personal computer via the data terminal 640. Further, the data terminal 640 supplies power supplied from the outside via the connection cable to the power supply unit 670.

The GPS control unit 660 communicates with the camera control unit 170 via the terminal unit 623 and the terminal unit 25 of the camera 10a. The GPS control unit 660 controls each component of the accessory 600.
The GPS control unit 660 extracts data to be output to the camera 10a from the first GPS information output from the GPS module unit 650 (GPS calculation unit 652). The data to be output to the camera 10a is, for example, data necessary to generate an Exif file. Information indicating latitude, information indicating longitude, information indicating altitude, information indicating Coordinated Universal Time (UTC), positioning Information indicating the number of satellites used, information indicating positioning reliability, information indicating the direction of travel, information on ground information, and the like.
In addition, the GPS control unit 660 uses a flag indicating whether the first GPS information is valid or invalid from the first GPS information (hereinafter referred to as a valid / invalid flag of the first GPS information), a 2D positioning state (longitude and latitude can be measured, and Or a 3D positioning state (a state in which longitude, latitude, and altitude can be measured) (hereinafter, referred to as a 2D positioning / 3D positioning flag).
Further, as will be described later, the GPS control unit 660 uses data to be output from the first GPS information to the camera 10a (information indicating latitude, information indicating longitude, information indicating altitude, information indicating coordinated universal time, and positioning). It is determined whether each information of information indicating the number of satellites, information indicating positioning reliability, information indicating the traveling direction, and ground information is acquired. Based on the determination result, the GPS control unit 660 generates a flag (hereinafter referred to as a first GPS acquisition information flag) indicating whether or not the information can be acquired. The valid / invalid flag of the first GPS information, the 2D positioning / 3D positioning flag, and the first GPS acquisition information flag will be described in detail later.
The GPS control unit 660 adds a valid / invalid flag of the first GPS information, a 2D positioning / 3D positioning flag, and a first GPS acquisition information flag to the data output to the camera 10a, and outputs the first GPS information to the camera 10a. 2GPS information (second data) is converted. The first GPS information (NMEA data) is, for example, ASCII data. On the other hand, the second GPS information is, for example, 1-byte data.
Note that the GPS control unit 660 may generate the second GPS information by associating the second GPS information with the generated information acquisition propriety flag.

  The buffer memory 663 stores the second GPS information converted by the GPS control unit 660.

  Charging unit 664 is connected to the second output terminal of power supply unit 670. The charging unit 664 charges the secondary battery 665 using the power supplied from the camera 10a via the terminal Ts12 and the terminal Ts11.

The power supply unit 670 has a first input terminal connected to the terminals Ts11 and Ts12 of the terminal unit 623, and a second input terminal connected to the data terminal 640. The power supply unit 670 has a first output terminal connected to the GPS calculation unit 652 and the charging unit 664, and a second output terminal connected to one end of the GPS control unit 660, the buffer memory 663, and the pull-up resistor 666. Has been.
The power supply unit 670 converts the power supplied from the camera 10a through the terminal unit 623 into a voltage value used inside the accessory 600, and supplies the converted power to each unit from the first and second output terminals. To do.

Next, the camera 10a will be described with reference to FIG. FIG. 32 is a configuration diagram illustrating a connection relationship between the camera 10a and the accessory 600 according to the present embodiment.
As shown in FIG. 32, the camera 10 a includes a load unit 30, a power switch 31, a power supply unit 32, an accessory power supply control unit 33, and a timer unit 34. The difference from the camera 10 is the time measuring unit 34.

  The timer unit 34 generates (clocks) time information based on a clock signal generated by a crystal oscillator or the like, and outputs the generated time information to the camera control unit 170. The timer unit 34 is connected to a power source and a GND (reference potential) in the same manner as the camera control unit 170.

Next, an outline of GPS will be described.
GPS is used for position measurement, surveying, and the like. Currently, more than 24 positioning satellites orbit around six orbits over the earth. Each positioning satellite transmits a navigation message (GPS information). The navigation message is transmitted in units of frames. It takes 30 seconds to transmit one frame. One frame includes five sets of subframes, and subframes 1 to 5 are transmitted in order. Further, subframes 1 to 3 include information unique to each positioning satellite and are configured with the same contents every time. In subframes 4 and 5, all positioning satellites are composed of information having the same contents, and are composed of pages 1 to 25 for each subframe. For this reason, 25 frames are required to transmit all the information of subframes 4 and 5. For this reason, it takes 12 minutes and 30 seconds for the GPS receiver to obtain all the navigation message information.

The five sets of subframes contain navigation messages as shown in FIG. FIG. 33 is a diagram for explaining the structure of the navigation message.
Subframe 1 (g601) is composed of the status of each positioning satellite (whether it is operating normally), a clock correction coefficient that is a coefficient for correcting the clock error of the positioning satellite transmitted by the positioning satellite, and the like. Yes.
Subframe 2 (g602) is composed of orbit information (ephemeris data) 1/2 of each positioning satellite.
Subframe 3 (g603) is composed of orbit information (ephemeris data) 2/2 of each positioning satellite.
Subframe 4 (g604-1 to g604-25) includes an ionospheric delay correction coefficient, which is a coefficient for correcting an amount of a signal received by the GPS receiver that is delayed by the ionosphere, GPS time, and UTC (Coordinated Universal Time; Universal Time, Coordinated)), which is information related to UTC, orbit information of all positioning satellites (Almanac data) 1/2, and the like.
Subframe 5 (g605-1 to g605-25) is composed of orbit information (almanac data) 2/2 of all positioning satellites. In addition, information indicating GPS time is included at the head of each subframe. The GPS time is a time managed on the positioning satellite side in units of one week, and is information expressed as an elapsed time from 0:00 every Sunday.

In addition, the ephemeris data sent by subframes 2 and 3 are the six elements of the orbit necessary to calculate the position of the positioning satellite (the ascending intersection, the orbital inclination, the near point argument, the orbital length radius, the eccentricity, Data), correction values, and epoch time toe of the orbit (ephemeris reference time). The ephemeris data is updated every 2 hours. The valid period of the ephemeris data is 2 hours ± 2 hours.
Almanac data is orbit information of each positioning satellite. Almanac data is updated about once a day. The valid period of the almanac data is epoch time ± 3 days.

The GPS module unit 650 stores the received data in the storage unit 652a. Starting positioning from a state in which both stored almanac data and ephemeris data are valid is called hot start. Also, starting the positioning from a state where the ephemeris data is invalid and only the almanac data is valid is called warm start. Starting the positioning from a state where both the almanac data and the ephemeris data are invalid is called a cold start.
In the case of a hot start, the time until the first position information is output after the power is turned on in the GPS module unit 650 is about several seconds because positioning can be performed using the stored ephemeris data.
On the other hand, in the case of a warm start, the GPS module unit 650 needs to re-acquire ephemeris data. For this reason, it takes 30 seconds or more to re-acquire the ephemeris data, and it also takes time to inspect the acquired ephemeris data. For this reason, in the case of a warm start, the time until the first position information is output after the power is turned on is about 30 to 60 seconds.
Further, in the case of a cold start, the GPS module unit 650 needs to acquire all navigation messages. For this reason, it takes several minutes to 12 minutes and 30 seconds to capture a positioning signal and to obtain a navigation message. Therefore, the time until the first position information is output after the power is turned on is about several minutes to 12 minutes and 30 seconds.

FIG. 34 is an example of NMEA data (first GPS information).
As shown in FIG. 34, NMEA data is ASCII data in which data extracted from a navigation message (GPS information) is classified into prescribed contents. The data is transmitted for each sentence, starts with a character string indicating the “$” character and the type of sentence, and ends with a line feed code “CR, LF” code. FIG. 34 shows examples of RMC sentence, GGA sentence, and RMF sentence. The sentence g631 is an RMC (Recommended Minimum Navigation Information) sentence. A sentence g631 includes a sentence name g611, a positioning time g612, a status g613 indicating the validity of data, a latitude g614, a longitude g615, a ground speed g616, a traveling direction g617, a positioning date g618, a magnetic deviation g619, a positioning mode g620, a checksum. g621 is included. The positioning mode is a positioning type such as single positioning that is positioning by one GPS module unit or relative positioning (DGPS (Differential GPS)) that is positioning by two GPS module units.
The sentence g632 is a GGA (Global Positioning System Fix Data. Time, Position and fix related data for a GPS receiver) sentence. The sentence g633 is an RMF (Position Fix Sentence) sentence.

  FIG. 35 is a diagram illustrating the configuration of data included in the second GPS information according to the present embodiment. As shown in FIG. 35, the second GPS information includes 11 types of data in order from numbers 1 to 11. The order of the numbers 1 to 11 is configured to match the order of data when writing to the Exif data, for example.

  The “GPS data valid / invalid” data includes a valid / invalid flag of the first GPS information, a 2D positioning / 3D positioning flag, and a presence / absence flag of the geomagnetic sensor. Note that the first GPS information is valid indicates a state where the GPS module unit 650 obtains position information (positioning state). On the other hand, the invalidity of the first GPS information indicates a state in which position information is not obtained by the GPS module unit 650 (non-positioning state). The 2D positioning state is a state in which GPS information is received from three positioning satellites and position information is obtained. The 3D positioning state is a state where GPS information is received from four positioning satellites and position information is obtained. The presence / absence flag of the geomagnetic sensor indicates whether or not the geomagnetic sensor is mounted on the accessory 600 by a flag. The GPS control unit 660 extracts information on whether the first GPS information is valid or invalid from the first GPS information, information on 2D positioning or 3D positioning. Then, the GPS control unit 660 generates “GPS data valid / invalid” data that is 1-byte data based on the extracted information. The valid / invalid flag of the first GPS information includes data (information indicating latitude, information indicating longitude, information indicating altitude, information indicating coordinated universal time) necessary for generating image file data (for example, Exif file data), This indicates whether or not the information indicating the number of satellites used for positioning, the information indicating the reliability of positioning, the information indicating the traveling direction, and the ground information) is valid. That is, if the GPS information is a flag indicating invalidity, it indicates that the data necessary for generating the image file data included in the first GPS information is invalid. If the data is invalid, the data is not stored in the image file data.

  The “GPS data acquisition information” data includes a first GPS acquisition information flag. The first GPS acquisition information flag indicates whether the latitude, longitude, altitude, UTC, positioning satellite signal used for positioning, positioning reliability, traveling direction, and ground speed information included in the first GPS information can be acquired. Are a plurality of flags. The GPS control unit 660 extracts each piece of information from the first GPS information. Then, based on each extracted information, it is determined whether or not each information can be acquired. The GPS control unit 660 generates “GPS data acquisition information” data that is 1-byte data based on the determination result.

  “Latitude” data, “longitude” data, and “altitude” data are information indicating latitude, longitude, and altitude. The GPS control unit 660 extracts latitude, longitude, and altitude information from the first GPS information, and uses the extracted information as “latitude” data, “longitude” data, and “altitude” data.

  “UTC” data and “satellite signal” data are information indicating the UTC information and the number of positioning satellites used for positioning. The GPS control unit 660 extracts information on the UTC and the satellite signal from the first GPS information, and uses the extracted information as “UTC” data and “satellite signal” data.

  “Positioning reliability” data is information indicating the reliability of positioning, and is a value such as PDOP (Position Dilution of Precision), HDOP (Horizontal Dilution of Precision), VDOP (Vertical Dilution of Precision), etc. is there. PDOP is an indexed positioning satellite geometry. If the PDOP value is small, the position accuracy is high, and if the PDOP value is large, the position accuracy is low. HDOP and VDOP are obtained by indexing only the horizontal and vertical components of PDOP. The GPS control unit 660 extracts PDOP, HDOP, and VDOP information from the first GPS information, and uses the extracted information as “positioning reliability” data.

  The “traveling direction” data and the “ground speed” data are the traveling direction information and the ground speed information of the positioning satellite. The GPS control unit 660 extracts information on the traveling direction and the ground speed from the first GPS information, and uses the extracted information as “traveling direction” data and “ground speed” data.

  “Direction” data is information indicating an orientation obtained from a geomagnetic sensor (not shown). The GPS control unit 660 determines whether or not a geomagnetic sensor is mounted on the accessory 600. If it is determined that the geomagnetic sensor is mounted, the GPS control unit 660 extracts information indicating the direction from the data output from the geomagnetic sensor, and sets the extracted information as “direction” data.

  As described above, the GPS control unit 660 generates the second GPS information from the first GPS information obtained from the GPS module unit 650. Then, the GPS control unit 660 transmits the second GPS information to the camera 10a via the communication signal terminal Ts6.

Next, a method for setting a flag of “GPS data valid / invalid” data will be described.
First, the valid / invalid flag of the first GPS information will be described. The GPS control unit 660 extracts a GGA sentence from the first GPS information output by the GPS module unit 650, and extracts GPS Quality Indicator information g622 (see FIG. 34, hereinafter referred to as information g622) from the extracted GGA sentence. When the value of the information g622 is 0, it indicates that reception is impossible. When the value of the information g622 is 0, the GPS control unit 660 sets the flag indicating whether the first GPS information is valid or invalid as 0 indicating that the first GPS information is invalid. When the value of information g622 is 1, it represents the single reception mode, and when the value of information g622 is 2, it represents the differential GPS positioning mode. When the value of the information g622 is 1 or 2, the GPS control unit 660 sets the flag indicating whether the GPS data is valid or not as 1 indicating that the GPS data is valid.

The 2D positioning / 3D positioning flag will be described. The GPS control unit 660 extracts the RMF sentence from the first GPS information output by the GPS module unit 650, and extracts the fix type information g623 (see FIG. 34, hereinafter referred to as information g623) from the extracted RMF sentence. When the value of the information g623 is 1, it indicates that GPS information from three satellites can be used. For this reason, the GPS control unit 660 sets 0 indicating the 2D positioning state in a flag indicating whether the 2D positioning state or the 3D positioning state is assumed to be the 2D positioning state. When the value of the information g623 is 2, it indicates that GPS information from four or more satellites can be used. For this reason, the GPS control unit 660 sets 1 indicating the 3D positioning state to the flag indicating the 2D positioning state or the 3D positioning state, assuming that it is the 3D positioning state.
Thus, the flag of “GPS data valid / invalid” data is a flag that is set based on the value of the sentence information extracted from the first GPS information.

Next, a method for setting a flag of “GPS data acquisition information” data will be described.
The GPS control unit 660 extracts UTC data from the first GPS information output by the GPS module unit 650. The data related to UTC is, for example, ZDA (Time & Date-UTC, Day, Month, Year and Local Time Zone) data of the first GPS information, GGA (Global Positioning System Fix Data. Time, Position and fix related data for a GPS) receiver) sentence. The GPS control unit 660 extracts whether or not the status of the extracted data is valid, and further extracts UTC data. The GPS control unit 660 determines whether or not the extracted UTC data is a numerical value in a predetermined range. The UTC data is composed of the year, month, day, and time (hour, minute, second). If the GPS control unit 660 determines that the data indicating “month” in the extracted UTC data is a value indicating January to December, the GPS control unit 660 determines that this data is valid. If the GPS control unit 660 determines that the data indicating the “year” of the extracted UTC data is a value indicating, for example, 2000 to 3000, this data is determined to be valid. If the GPS control unit 660 determines that the data indicating “day” of the extracted UTC data is a value indicating 1st to 31st, it determines that this data is valid. When the GPS control unit 660 determines that the data indicating “hour” of the extracted UTC data is a value indicating 0 to 23:00, the GPS control unit 660 determines that the data is valid. If the GPS control unit 660 determines that the data indicating “minute” of the extracted UTC data is a value indicating 0 to 59 minutes, the GPS control unit 660 determines that the data is valid. When it is determined that the data indicating “second” of the extracted UTC data is a value indicating 0 to 59 seconds, the GPS control unit 660 determines that this data is valid. If all the data is valid and the status of the extracted data is valid as a result of the above determination, the GPS control unit 660 determines that UTC data has been acquired and sets the flag for UTC data acquisition to 1. To do.
The GPS control unit 660 determines whether the data in the year, month, day, or time (hour, minute, second) is outside the predetermined range, or if the status of the extracted data is invalid. It is determined that data has not been acquired, and a flag for UTC data acquisition is set to 0.
As described above, the GPS control unit 660 extracts one or more sentences from the first GPS information, and determines whether GPS data can be acquired based on the extracted sentence information. The flag of “GPS data acquisition information” data is a flag set based on the determination result.

  Next, a processing procedure in the camera system 1a will be described. FIG. 36 is a flowchart showing a processing procedure in the camera system 1a according to the present embodiment.

(Step S5001) The camera system 1a performs a series of processing (startup sequence) for starting up the accessory 600.
(Step S5002) In the startup sequence, the camera system 1a performs a series of processing (communication preparation sequence) for preparing communication between the camera 10a and the accessory 600.
(Step S5003) In the start-up sequence, the camera system 1a performs a series of processes (initial communication sequence) for mutually communicating information necessary for imaging between the camera control unit 170 and the GPS control unit 660 after the end of the communication preparation sequence. )I do.

(Step S5004) A series of processing in which the camera system 1a communicates with each other between the camera control unit 170 and the GPS control unit 660 so that the information changed by the setting change or the like can be updated after the initial communication sequence ends. (Second steady communication sequence) is performed. For example, the second steady communication sequence is performed at a cycle (2T) that is twice as long as the first steady communication of the cycle T performed by the accessory 400 and the camera 10. The period of the second steady communication sequence is, for example, 400 msec. The second steady communication sequence is performed only when the accessory 600 has a GPS function.

(Step S5005) The camera control unit 170 performs determination processing for determining whether or not there is an interrupt request. If it is determined that there is no interrupt request (step S5005; No), the process returns to step S5004. When it is determined that there is an interrupt request (step S5005; Yes), the process proceeds to step S5006.
(Step S5006) The camera system 1a stops the second steady communication sequence and performs an interrupt process. The interrupt process is, for example, a series of processes (photographing sequence) included in the imaging process. The camera system 1a performs the process of the steady communication sequence again after the interruption process is completed. That is, the camera system 1a does not perform the steady communication sequence process in the shooting sequence. Thereafter, while the accessory 600 is activated, the processes in steps S5004 to S5006 are repeated.

  The communication preparation sequence performed in step S5002 (FIG. 36) is performed in the same manner as the procedure of the accessory 400 described in FIG.

Note that in a state where the accessory 600 is not connected to the shoe seat 15 of the camera 10a (non-wearing state), the storage unit 652a and the RTC 653 in the GPS module unit 650 are supplied with power from the secondary battery 665. For this reason, the timing information of the RTC 653 continues to be generated. In addition, when positioning has been performed in the past, the GPS module unit 650 stores, in the storage unit 652a, predetermined information necessary for starting positioning among the first GPS information (navigation message) acquired in the past. ing.
Hereinafter, a case where the accessory 600 is connected to the shoe seat 15 of the camera 10a (mounted state) will be described.

  Next, with reference to FIG. 37, the procedure of the process in the initial communication sequence performed in step S5003 (FIG. 36) will be described. FIG. 37 is a diagram illustrating a processing procedure in an initial communication sequence in the accessory 600 according to the present embodiment. The sequence of FIG. 37 is similar to the sequence of initial communication when the illumination device (flash device) 400 as an accessory in FIG. 12 is attached to the camera body 100, but the operation on the camera control unit 170 side is as follows. The difference is that the operations of steps S5110 to S5115 are added, and the operations of steps S5113 to S5114 are added as operations on the GPS control unit 660 side of the accessory 600 (GPS device).

(Step S5101) When the initial communication sequence is started, the camera control unit 170 requests transmission of accessory initial state information including battery presence / absence information and function type information (second function inquiry command). Is transmitted to the GPS control unit 660 and preparations for receiving the accessory initial state information are made.
(Step S5102) The GPS control unit 660 receives the transmission request command C1 from the camera control unit 170.
(Step S5103) The GPS control unit 660 transmits the battery presence / absence information and the function type information to the camera control unit 170 in accordance with the transmission request command C1. In this case, since the accessory 600 has an extended function, the GPS control unit 660 transmits function type information indicating that the accessory 600 has the extended function to the camera control unit 170.
(Step S5104) The camera control unit 170 receives battery presence information and function type information from the GPS control unit 660.

(Step S5104A) The camera control unit 170 transmits a transmission notification command C20 for notifying the transmission of the camera initial state information to the GPS control unit 660, and prepares to transmit the camera initial state information (step S5104B). Receives the transmission request command C20.
(Step S5104C) The GPS control unit 660 transmits initial state information to the camera control unit 170 in accordance with the transmission request command C20.
(Step S5104D) The camera control unit 170 receives the initial state information.

(Step S5105) The camera control unit 170 determines whether or not the accessory 600 has an extended function based on the function type information received in step S5104. When it determines with the accessory 600 having an extended function (step S5105; Yes), it progresses to step S5106. If it is determined that the accessory 600 does not have an extended function (step S5105; No), the process proceeds to step S5110.

(Step S 5106) The camera control unit 170 transmits a transmission request command C 2 for requesting transmission of “characteristic information of the extended function” to the GPS control unit 660. Here, the “characteristic information of the extended function” is control information peculiar to the accessory 600 having the extended function. In the case of the accessory 600, “supply (power supply) continuation information” is included. “Supply (power supply) continuation information” means that when the user performs a power OFF operation to turn off the power switch 31 on the camera 10a side (power OFF state), or the camera 10a is in a sleep state (no user operation for a predetermined time). Even in the case of shifting to a low power consumption state that shifts in the case of the camera 10a, the accessory 10 requests the camera 10a from the accessory side in advance to maintain power supply (power feeding) from the camera 10a to the accessory 600. Information. Both the power-off state and the sleep state described above indicate a state in which the camera 10a is activated and various camera operations (for example, operations that can exhibit the functions of the camera such as shooting operations) cannot be performed. In other words, the power-off state and the sleep state are different from the activation state because the camera is activated and performs camera operations.
Note that the accessory 600 in the present embodiment is configured to transmit this “supply continuation information” to the camera 10a. However, the accessory 400 described in the above-described embodiment transmits this “supply continuation information” to the camera 10a. In contrast, transmission is not performed (see the sequence in FIG. 12).
(Step S5107) The GPS control unit 660 receives the transmission request command C2 (first function inquiry command) from the camera control unit 170.

(Step S5108) The GPS control unit 660 transmits the extended function characteristic information to the camera control unit 170 in accordance with the transmission request command C2.
(Step S5109) The camera control unit 170 receives the extended function characteristic information from the GPS control unit 660.

(Step S5110) The camera control section 170 determines whether or not the accessory 600 has a GPS function based on the function type information included in the initial state information received in step S5104 after receiving the extended function characteristic information. To do. If it is determined that the accessory 600 has a GPS function (step S5110; Yes), the process proceeds to step S5111. When it is determined that the accessory 600 does not have a GPS function (step S5110; No), the process proceeds to step S5116.

(Step S5111) The camera control unit 170 extracts supply continuation information from the characteristic information of the extended function. Based on the extracted supply continuation information, the camera control unit 170 sets a flag (hereinafter referred to as a power supply continuation flag) indicating that the accessory 600 has a function of continuing supply in the nonvolatile memory 160. When the power supply continuation flag is set, the camera control unit 170 continues to supply power to the accessory 600 when the camera 10a shifts to the power-off state or the sleep state.
In other words, if the power supply continuation flag is not set, the camera control unit 170 does not continue power supply to the accessory in the camera power OFF state or the sleep state. For this reason, the camera control unit 170 does not continue power supply to the accessory (illumination device) 400 of the above-described embodiment in the power-off state or the sleep state.
(Step S5112) After setting the flag, the camera control unit 170 transmits a transmission request command C5001 for requesting transmission of GPS drive request information to the GPS control unit 660.
(Step S5113) The GPS control unit 660 receives the transmission request command C5001.

(Step S5114) The GPS control unit 660 transmits response information indicating that the transmission request command C5001 has been received to the camera control unit 170. When receiving the transmission request command C5001, the GPS control unit 660 outputs an instruction to start positioning to the GPS module unit 650. Then, the GPS module unit 650 starts receiving the GPS information (navigation message) from the positioning satellite in response to the positioning start instruction from the GPS control unit 660. The GPS module unit 650 starts processing for converting the received GPS information into first GPS information (NMEA data).
(Step S5115) The camera control unit 170 receives the response information from the GPS control unit 660.

(Step S5116) The camera control unit 170 determines whether or not the accessory 600 has an illumination light emitting function based on the function type information included in the initial state information received in step S5104. When it determines with having an illumination light emission function (step S5116; Yes), step S5117 to S5120 are performed similarly to step S211 to S214 (refer FIG. 12). When it determines with having no illumination light emission function (step S5116; No), it progresses to step S5121.

(Step S5121) The camera control unit 170 determines whether or not the accessory 600 has a flashing function based on the function type information received in step S5104.
(Step S5122) If the camera control unit 170 determines that the accessory 600 does not have the flash light emission function (Step S5121; No), the accessory 600 has the illumination light emission function based on the function type information received in Step S5104. It is determined whether or not a function that does not correspond to any of the flash light emitting functions, for example, a multi-lamp commander function or the like is provided (step S5122). When it is determined that the multi-light commander function or the like is provided, the process proceeds to step S217 (FIG. 12). When it is determined that the multi-light commander function or the like is not provided, the initial communication sequence process is terminated.

Thereafter, processing is performed in the same manner as steps S217 to S240 shown in FIG.
As described above with reference to FIG. 37, the initial request after the accessory 600 is attached to the camera 10a is a request for continuing power supply from the camera even when the camera enters a power-off state or a sleep state ( Supply continuation information) is output to the camera 10a, and the camera 10a operates to respond to the request for continuation of the power supply. Therefore, the accessory 600 periodically measures the position even when the camera power is off or in sleep. It can be carried out. For this reason, in the camera system 1a, even if the measurement interval is somewhat open, the continuous GPS measurement can be executed, so that even when the camera power supply is turned on next time, the camera system 1a is relatively early. The position measurement can be completed.
In addition, when there is “supply continuation information” from the attached accessory side, the camera 10a continues to supply power to the accessory even when the power is turned off or goes to sleep. If (supply continuation information) is not received, the power supply is not continued to the accessory at the time of power OFF or sleep. For this reason, since it is not necessary to supply power to an accessory that does not require continued power supply, wasteful power consumption can be prevented.

In the present embodiment, the accessory transmits “supply continuation information” to the camera, and when the camera receives the information, the power supply to the accessory is continued. However, the accessory side is configured to transmit information requesting “prohibition” to continue power supply when the power is turned off or during sleep, and the camera side prohibits power supply to the accessory when the information is received. You may comprise so that it may do. For example, “information requesting prohibition of continued power supply” may be transmitted from the accessory 400 of the above-described embodiment during initial communication. In this case, it is not necessary to output any information regarding the power supply continuation from the accessory 600 that requests the power supply continuation.
In the present embodiment, the power supply continuation / prohibition of power supply is controlled by determining whether or not to continue power supply when shifting to the power-off state on the camera side and when shifting to the sleep state. This power supply continuation / prohibition of power supply may be controlled only in the case of transition to either one (for example, when supply continuation information is received from an accessory, the camera control unit 170 transitions to the sleep state. In this case, power supply is continued, and power supply is prohibited in the case of shifting to the power OFF state).

Next, with reference to FIG. 38 and FIG. 39, the process procedure in the second steady communication sequence performed in step S5004 (FIG. 36) will be described. FIG. 38 is a diagram illustrating a processing procedure in the second steady communication sequence in the accessory 600. FIG. 39 is a diagram showing a processing procedure in updating GPS data in the camera 10a.
The camera control unit 170 determines whether the accessory 600 has a GPS function based on the function type information included in the initial state information received in step S5104. When the accessory 600 has an extended function, the following second steady communication sequence is performed.

(Step S5201) The camera control unit 170 determines whether or not imaging is being performed. If it is determined that imaging is in progress (step S5201; Yes), the second steady communication sequence is terminated. If it is determined that imaging is not in progress (step S5201; No), the process proceeds to step S5202.

(Step S5202) The camera control section 170 transmits a second GPS information transmission request command C5011 for requesting transmission of the second GPS information to the GPS control section 660.
(Step S5203) The GPS control unit 660 receives the second GPS information transmission request command C5011 from the camera control unit 170.
(Step S5204) The GPS control unit 660 transmits the second GPS information to the camera control unit 170 in accordance with the second GPS information transmission request command C5011.
(Step S5205) The camera control unit 170 receives the second GPS information from the GPS control unit 660.

(Step S 5206) The camera control unit 170 extracts “GPS data valid / invalid” data from the second GPS information. The camera control unit 170 extracts information indicating whether the second GPS information is valid or invalid from the “GPS data valid / invalid” data, and determines whether the second GPS information is valid based on the extraction result.
Next, the camera control unit 170 writes and updates information indicating whether the second GPS information is valid or invalid in the nonvolatile memory 160 or the buffer memory 165 based on the determination result.
If it is determined that the second GPS information is valid (step S5206; Yes), the process proceeds to step S5207. If it is determined that the second GPS information is not valid (step S5206; No), the process proceeds to step S5208.

(Step S5207) When it is determined that the second GPS information is valid (step S5206; Yes), the camera control unit 170 performs a GPS data update process in the camera 10a. After the GPS data update process in the camera 10a is completed, the second steady communication sequence is terminated.
(Step S5208) When it is determined that the second GPS information is not valid (step S5206; No), the camera control unit 170 determines whether or not the invalid state of the second GPS information continues for 60 seconds or more. When it determines with the invalid state of 2nd GPS information continuing for 60 seconds or more (step S5208; Yes), it progresses to step S5209. If the invalid state of the second GPS information has not continued for 60 seconds or more, that is, if the second GPS information has been effectively changed within 60 seconds (step S5208; No), the process proceeds to step S5207.
(Step S5209) When it is determined that the invalid state of the second GPS information continues for 60 seconds or more (step S5208; Yes), the camera control unit 170 performs invalidation processing of the GPS data in the camera 10a. After the invalidation processing of the GPS data in the camera 10a is finished, the second steady communication sequence is finished.

Next, the second GPS information invalidation process performed in step S5209 (FIG. 38) will be described.
When the camera control unit 170 determines that the invalid state of the second GPS information continues for 60 seconds or more, the camera control unit 170 does not write information based on the second GPS information to the image file in which the captured image data is stored. . Further, the display related to the position information displayed on the display unit 102 of the camera 10a is invalidated. The invalid display is, for example, “—” (Hai Phong).

Next, with reference to FIG. 39, GPS data update processing in the camera 10a performed in step S5207 (FIG. 38) will be described. FIG. 39 is a diagram showing a procedure for updating GPS data in the camera 10a in the second steady communication sequence according to the present embodiment.
(Step S5301) The camera control unit 170 rewrites and updates the data valid / invalid state data stored in the nonvolatile memory 160 based on the “GPS data valid / invalid” data. For example, when the second GPS information is invalid, the camera control unit 170 records “0” as the data valid / invalid state data. When the second GPS information is valid, the camera control unit 170 records “1” as data valid / invalid state data.

(Step S5302) The camera control unit 170 extracts information indicating whether the 2D positioning state or the 3D positioning state is present from the “GPS data valid / invalid” data, and the 2D • stored in the nonvolatile memory 160 based on the extracted result. Rewrite and update 3D positioning status data. For example, when the information indicating the 2D positioning state or the 3D positioning state is information indicating the 2D positioning state, the camera control unit 170 records “0” as the 2D / 3D positioning state data. When the information indicating the 2D positioning state or the 3D positioning state is information indicating the 3D positioning state, the camera control unit 170 records “1” as the 2D / 3D positioning state data.

(Step S5303) The camera control unit 170 extracts information indicating whether or not UTC data has been acquired from the “GPS data acquisition information” data. If UTC data has been acquired, the process advances to step S5304. If UTC data has not been acquired, the process advances to step S5308.

(Step S5304) The camera control unit 170 determines whether or not to match the time generated by the time measuring unit 34 of the camera 10a with the UTC time based on information set by the user. Information set by the user is stored in the nonvolatile memory 160 or the buffer memory 165. If it is determined that the time generated by the timer 34 of the camera 10a is set to the UTC time (step S5304; Yes), the process proceeds to step S5305. If it is determined that the time of the camera 10a is not set to coincide with the UTC time (step S5304; No), the process proceeds to step S5307.

(Step S5305) The camera control unit 170 extracts “UTC” data from the second GPS information, and updates the date and time of the timing information generated by the timing unit 34 of the camera 10a to the date and time based on the extracted “UTC” data. .

(Step S5306) The camera control unit 170 sets the time generated by the time measuring unit 34 of the camera 10a to the UTC time stored in the nonvolatile memory 160 or the buffer memory 165, and sets the time of the camera 10a to the UTC time. The time generated by the unit 34 is rewritten to a setting that does not match the time.

(Step S5307) After step S5304 or S5306, the camera control unit 170 rewrites and updates the UTC data stored in the nonvolatile memory 160 based on the extracted “UTC” data.

(Step S5308) The camera control unit 170 extracts information indicating whether or not latitude data can be acquired from the “GPS data acquisition information” data, and determines whether or not latitude data can be acquired based on the extracted information. To do. If it is determined that the latitude data has been acquired (step S5308; Yes), the process proceeds to step S5309. When it is determined that the latitude data cannot be acquired (step S5308; No), the process proceeds to step S5312.

(Step S5309) The camera control unit 170 extracts information indicating whether or not longitude data can be acquired from the “GPS data acquisition information” data, and determines whether or not longitude data can be acquired based on the extracted information. To do. If it is determined that longitude data has been acquired (step S5309; Yes), the process proceeds to step S5310. When it is determined that the longitude data cannot be acquired (step S5309; No), the process proceeds to step S5312.

(Step S5310) The camera control unit 170 extracts “latitude” data from the second GPS information, and rewrites the latitude data stored in the nonvolatile memory 160 or the buffer memory 165 based on the extracted “latitude” data. Update.

(Step S5311) The camera control unit 170 extracts “longitude” data from the second GPS information, and rewrites the longitude data stored in the nonvolatile memory 160 or the buffer memory 165 based on the extracted “longitude” data. Update.

(Step S5312) The camera control unit 170 extracts information indicating whether altitude data can be acquired from the “GPS data acquisition information” data, and determines whether altitude data can be acquired based on the extracted information. To do. If it is determined that altitude data has been acquired (step S5312; Yes), the process proceeds to step S5313. If it is determined that altitude data has not been acquired (step S5312; No), the process proceeds to step S5315.

(Step S5313) The camera control unit 170 reads the information indicating the 2D / 3D positioning state stored in the nonvolatile memory 160, and whether the read information indicating the 2D / 3D positioning state is information indicating the 3D positioning state. Determine whether or not. When it determines with it being the information which shows 3D positioning state (step S5313; Yes), it progresses to step S5314. When it is determined that the information is not information indicating the 3D positioning state, that is, information indicating the 2D positioning state (step S5313; No), the process proceeds to step S5315.

(Step S5314) The camera control unit 170 extracts “altitude” data from the second GPS information, and rewrites altitude data stored in the nonvolatile memory 160 or the buffer memory 165 based on the extracted “altitude” data. Update.

(Step S5315) The camera control unit 170 extracts information indicating whether or not the geomagnetic sensor is mounted from the “GPS data valid / invalid” data, and determines whether or not the geomagnetic sensor is mounted based on the extracted information. . When it determines with the geomagnetic sensor being mounted (step S5315; Yes), it progresses to step S5316. When it determines with the geomagnetic sensor not being mounted (step S5315; No), it progresses to step S5317.

(Step S5316) When it is determined that the geomagnetic sensor is mounted, the camera control unit 170 extracts “azimuth” data from the second GPS information, and based on the extracted “azimuth” data, the nonvolatile memory 160 or the buffer The azimuth data stored in the memory 165 is rewritten and updated.

(Step S5317) The camera control section 170 extracts information indicating whether or not the number of positioning satellites can be acquired from the “GPS data acquisition information” data, and whether or not the number of positioning satellites can be acquired based on the extracted information. Determine. If it is determined that the number of positioning satellites has been acquired (step S5317; Yes), the process proceeds to step S5318. If it is determined that the number of positioning satellites has not been acquired (step S5317; No), the process proceeds to step S5319.

(Step S5318) When it is determined that the number of positioning satellites can be acquired, the camera control unit 170 extracts “satellite signal” data from the second GPS information, and based on the extracted “satellite signal” data, the nonvolatile memory 160 Alternatively, the positioning satellite number data used for positioning stored in the buffer memory 165 is rewritten and updated.

(Step S5319) The camera control section 170 can extract information indicating whether or not the positioning reliability data can be acquired from the “GPS data acquisition information” data, and can acquire the positioning reliability data based on the extracted information. It is determined whether or not. If it is determined that positioning reliability data has been acquired (step S5319; Yes), the process proceeds to step S5320. If it is determined that the positioning reliability data has not been acquired (step S5319; No), the process proceeds to step S5321.

(Step S5320) If it is determined that the positioning reliability data can be acquired, the camera control unit 170 extracts the “positioning reliability” data from the second GPS information, and the extracted “positioning reliability” data. Based on this, the positioning reliability data used for positioning stored in the nonvolatile memory 160 or the buffer memory 165 is rewritten and updated.

(Step S5321) The camera control unit 170 extracts information indicating whether or not the traveling direction data can be acquired from the “GPS data acquisition information” data, and whether or not the traveling direction data can be acquired based on the extracted information. Determine. If it is determined that the traveling direction data can be acquired (step S5321; Yes), the process proceeds to step S5322. If it is determined that the traveling direction data has not been acquired (step S5321; No), the process proceeds to step S5323.

(Step S5322) When it is determined that the traveling direction data can be acquired, the camera control unit 170 extracts “traveling direction” data from the second GPS information, and based on the extracted “traveling direction” data, the nonvolatile memory 160 Alternatively, the traveling direction data stored in the buffer memory 165 is rewritten and updated.

(Step S 5323) The camera control unit 170 extracts information indicating whether or not the ground speed data can be acquired from the “GPS data acquisition information” data, and determines whether or not the ground speed data can be acquired based on the extracted information. Determine. If it is determined that the ground speed data can be acquired (step S5323; Yes), the process proceeds to step S5324. When it is determined that the ground speed data cannot be acquired (step S5323; No), the GPS data update process is terminated.

(Step S5324) When it is determined that the ground speed data can be acquired, the camera control unit 170 extracts “ground speed” data from the second GPS information, and based on the extracted “ground speed” data, the nonvolatile memory 160 Alternatively, the ground speed data stored in the buffer memory 165 is rewritten and updated.

  As described above, in the present embodiment, when the time generated by the timekeeping unit 34 of the camera 10a is set to UTC by the user, the time generated by the timekeeping unit 34 of the camera 10a is set to UTC. . After setting the time generated by the timer 34 of the camera 10a to UTC, the setting for adjusting the time generated by the timer 34 of the camera 10a to UTC is canceled. For example, if the second GPS information is updated every 400 msec, the camera 10a is generated every 400 msec by the timer 34 once the time generated by the timer 34 is combined with UTC. This is because it is not necessary to match the time with UTC. Therefore, the process of adjusting the time generated by the time measuring unit 34 of the camera 10a to UTC is performed again when the user sets the time generated by the time measuring unit 34 of the camera 10a to UTC. As a result, the load on the camera control unit 170 can be reduced.

  In the present embodiment, whether or not each data has been acquired before each data is read and updated from the second GPS information as in steps S5303, S5308, S5309, S5312, S5317, S5319, S5321 and S5323. Judgment was made. For this reason, the camera control unit 170 can read out each data from the second GPS information only when each data can be acquired correctly, and can update the GPS data with the correct data. In other words, it is possible to prevent updating with data that cannot be acquired correctly.

  Next, with reference to FIG. 40, processing in still image shooting will be described. FIG. 40 is a diagram illustrating a processing procedure of the camera 10a and the accessory 600 in still image shooting according to the present embodiment.

(Step S5401) The accessory 600 performs GPS positioning processing. In this case, the GPS control unit 660 stores the generated second GPS information in the buffer memory 663.

(Step S5402) The camera control section 170 starts the second steady communication sequence every 2T time interval. The period T is a period performed by the accessory 400 and the camera 10.
(Step S5403) The camera control unit 170 transmits a second GPS information transmission request command C5011 to the GPS control unit 660.
Next, the GPS control unit 660 transmits the second GPS information stored in the buffer memory 663 to the camera control unit 170 in response to the second GPS information transmission request command C5011.
Next, the camera control unit 170 performs GPS data update processing in the camera 10a based on the received second GPS information.

(Step S5404) The camera control unit 170 determines whether there is an interruption due to the shooting sequence. The interruption due to the shooting sequence occurs, for example, when the release button 16 is pressed. If it is determined that there is an interruption due to the shooting sequence (step S5404; Yes), the process proceeds to step S5405. If it is determined that there is no interruption due to the shooting sequence (step S5404; No), the process proceeds to step S5402.

(Step S5405) When it is determined that there is an interruption due to the imaging sequence, the camera control unit 170 determines whether or not the second steady communication sequence process is being performed. If it is determined that the second steady communication sequence process is being performed (step S5405; Yes), the process proceeds to step S5406. If it is determined that the second steady communication sequence process is not in progress (step S5405; No), the process proceeds to step S5407.

(Step S5406) When it is determined that the second steady communication sequence process is being performed, the camera control unit 170 stops the second steady communication sequence process.

(Step S5407) The camera control unit 170 performs still image shooting processing.
(Step S5408) The camera control unit 170 reads information indicating whether the second GPS information is valid or invalid from the nonvolatile memory 160 or the buffer memory 165. The camera control unit 170 determines whether the second GPS information is valid based on the read information. If the second GPS information is valid (step S5408; Yes), the process proceeds to step S5409. If it is determined that the second GPS information is not valid (step S5408; No), the process proceeds to step S5402.

(Step S5409) When the second GPS information is valid, the camera control unit 170 reads information necessary for the image file from the nonvolatile memory 160 or the buffer memory 165, and creates an image file. For example, the camera control unit 170 displays the created image file on the display unit 102 and stores it in the memory 140 as an image file of captured image data. In other words, the camera control unit 170 creates an image file using the second GPS information stored in the nonvolatile memory 160 or the buffer memory 165 before the start of imaging.

  As described above, the camera control unit 170 stops the second steady communication sequence with the GPS control unit 660 when a still image shooting sequence occurs.

  Next, processing in moving image shooting will be described with reference to FIG. FIG. 41 is a diagram illustrating a processing procedure of the camera 10a and the accessory 600 in moving image shooting according to the present embodiment.

  Steps S5501 to S5504 are performed in the same manner as steps S5401 to S5404 (FIG. 40) in the still image shooting process.

(Step S5505) When it is determined that there is an interruption due to the imaging sequence, the camera control unit 170 determines whether or not the second steady communication sequence process is being performed. If it is determined that the second steady communication sequence process is being performed (step S5505; Yes), the process proceeds to step S5506. If it is determined that the second steady communication sequence process is not in progress (step S5505; No), the process proceeds to step S5511.

(Step S5506) When it is determined that the second steady communication sequence process is being performed, the camera control unit 170 stops the second steady communication sequence process.

(Step S5507) The camera control unit 170 transmits a sleep start command C5021 to the GPS control unit 660.

(Step S5508) The GPS control unit 660 receives the sleep start command C5021, and controls the accessory 600 to the sleep state (power saving mode) based on the received sleep start command C5021. In this case, the GPS control unit 660 controls to stop the operation of the GPS module unit 650 (positioning or generation of first GPS information). In addition, the GPS control unit 660 performs control so as to only generate time information by the RTC 653 and hold data stored in the storage unit 652a in the GPS module unit 650. In this case, power from the camera 10a to the module unit 650 is supplied only to the RTC 653 and the storage unit 652a. Hereinafter, the calculation process (generation of first GPS information) associated with positioning is also referred to as positioning.

(Step S5509) The GPS control unit 660 transmits response information to the sleep start command C5021 to the camera control unit 170.
(Step S5510) After receiving the response information from the GPS control unit 660, the camera control unit 170 switches the communication control signal Cs from the H level to the L level.

(Step S5511) The camera control unit 170 performs a moving image shooting process.
(Step S5512) The camera control unit 170 reads information indicating whether the second GPS information is valid or invalid from the nonvolatile memory 160 or the buffer memory 165. The camera control unit 170 determines whether the second GPS information is valid based on the read information. If the second GPS information is valid (step S5512; Yes), the process proceeds to step S5513. When it determines with 2nd GPS information not being effective (step S5512; No), it progresses to step S5514.

(Step S5513) When the second GPS information is valid, the camera control unit 170 reads information necessary for the image file from the nonvolatile memory 160 or the buffer memory 165, and creates an image file. For example, the camera control unit 170 displays the created image file on the display unit 102 and stores it in the memory 140 as an image file of captured image data. In other words, the camera control unit 170 creates an image file using the second GPS information stored in the nonvolatile memory 160 or the buffer memory 165 before the start of imaging. Note that the second GPS information (position information) recorded in the image file created in this step is the position information acquired at the timing of step S5501, that is, immediately before starting moving image shooting, as shown in the flowchart of FIG. It is the 2nd GPS information (positional information) acquired.

(Step S5514) After the photographing process ends, the camera control unit 170 switches the communication control signal Cs from the L level to the H level.
Next, the camera control unit 170 transmits a sleep cancel command C5022 to the GPS control unit 660. Note that the end of the shooting process is a state in which the release button 16 is pressed again to finish moving image shooting, or a state where the free space of the memory 140 is reduced and the moving image shooting cannot be continued.

(Step S5515) The GPS control unit 660 receives the sleep cancel command C5022 from the camera 10a, and controls the GPS module unit 650 to return from the sleep state based on the received sleep cancel command C5022.
Next, the GPS control unit 660 controls the GPS module unit 650 to resume operation.

(Step S5516) The GPS control unit 660 transmits response information to the sleep release command C5022 to the camera control unit 170.
(Step S5517) After receiving the response information from the GPS control unit 660, the camera control unit 170 returns to step S5502.

  As described above, when a video shooting sequence occurs, the camera control unit 170 stops the second steady communication sequence with the GPS control unit 660, and further issues a command for starting the sleep process to the GPS control unit 660. Send. Thereby, the accessory 600 controls the operation state of the GPS module part 650 to a sleep state (power saving mode) during the imaging of a moving image. As a result, the power supplied from the camera 10a can be reduced, and the power consumption in the camera system 1a can be reduced. In this embodiment, the GPS module unit 650 is set in the sleep state to suppress power consumption. However, the operation of the GPS control unit 660 is limited (sleep process), and the GPS control unit 660 is connected to the GPS control unit 660. In addition, power consumption may be further reduced by reducing power consumption. (Standby state described later.)

  The camera control unit 170 transmits a command for starting the above-described sleep processing to the GPS control unit 660 (which controls the GPS control unit 660 to the sleep state). It is not limited to entering a shooting sequence. In addition to this, for example, when the camera 10a is operating in an image playback mode for playing back captured images (still images and moving images), or still image shooting but shooting with a long exposure time for one frame (so-called long exposure) The camera 10a may control the GPS control unit 660 to the sleep state even when shooting is performed. In addition to this, when the photographic lens attached to the camera is not ready to shoot (when the photographic lens is in a contracted state where the photographic lens shrinks to a state incapable of shooting), or the photographer is provided on the back of the camera The camera 10a also controls the GPS control unit 660 to the sleep state (power saving mode) even when the menu setting operation for setting the shooting conditions and the like by opening the menu screen on the liquid crystal display unit is performed. Also good. In such a case, the GPS control unit 660 may receive state information indicating each state from the camera 10a, and may control the GPS control unit 660 to a sleep state based on the received state information.

  In the present embodiment, an example in which the sleep process is performed on the accessory 600 during moving image shooting has been described. However, the camera 10a may continue positioning without putting the accessory 600 in the sleep state during moving image shooting. Further, the camera 10a may cause the accessory 600 to perform positioning at predetermined time intervals, and may make the camera 10a sleep only during a period when positioning is not performed.

Next, referring to FIG. 42, power control of the accessory 600 by the camera 10a will be described. FIG. 42 is a diagram for explaining processing in power control of the accessory 600 by the camera 10a according to the present embodiment.
First, a case where the camera 10a enters the sleep state will be described.

(Step S5601) When the user attaches the accessory 600 to the shoe seat 15 of the camera body 100a, the signal level of the activation detection level DET becomes L (low) level.
(Step S5602) The camera control unit 170 performs determination processing for determining whether or not the signal level of the activation detection level DET is L level. When it is determined that the signal level of the activation detection level DET is not the L level (step S5602; No), the camera control unit 170 determines that the accessory 600 is not attached to the camera 10a and determines in step S5602. Again. When it is determined that the signal level of the activation detection level DET is the L level (step S5602; Yes), the process proceeds to step S5603.

(Step S5603) When it is determined that the signal level of the activation detection level DET is L level, the camera control unit 170 supplies power to the accessory 600 via the terminal unit 25 of the camera 10a and the terminal unit 623 of the accessory 600. To start.
(Step S5604) The GPS control part 660 starts control to each part after the electric power supply from the camera 10a is started.
Next, the charging unit 664 of the accessory 600 starts charging the secondary battery 665.

(Step S5605) The camera control unit 170 transmits a transmission request command C5001 for requesting transmission of GPS drive request information to the GPS control unit 660 after the flag for continuing power supply is set.
(Step S5606) The GPS control unit 660 receives the transmission request command C5001. Next, the GPS control unit 660 outputs an instruction to start positioning to the GPS module unit 650 in accordance with the transmission request command C5001. Next, the GPS module unit 650 starts receiving the first GPS information (navigation message) from the positioning satellite in response to an instruction to start positioning output from the GPS control unit 660.

(Step S5607) After the accessory 600 starts positioning, the camera control unit 170 determines whether or not the user is set to perform the sleep process on the camera 10a. The sleep process is a process for shifting the camera 10a and the accessory 600 to the sleep state when the camera 10a is not operated within a predetermined time. If it is determined that the sleep process is not set (step S5607; No), the process returns to step 5602. If it is determined that the sleep processing is set (step S5607; Yes), the process proceeds to step S5608. The sleep state in the camera 10a is a process different from the sleep process of the accessory 600, for example, the display on the display unit 102 is not displayed or the operation of the camera control unit 170 is restricted.

(Step S5608) When it is determined that the setting for performing the sleep process is made, the camera control unit 170 continues a state in which no operation is performed (hereinafter referred to as a no-operation state) for a predetermined period. It is determined whether or not. The predetermined period is a period (for example, 5 minutes) set or selected by the user using the setting switch 104. When it is determined that the no-operation state has not been continued for a predetermined period (step S5608; No), step S5608 is repeated. When it is determined that the no-operation state continues for a predetermined period (step S5608; Yes), the process proceeds to step S5609.

(Step S5609) When it is determined that the no-operation state continues for a predetermined period, the camera control unit 170 transmits a sleep start command C5021 to the GPS control unit 660.
(Step S5610) The GPS control unit 660 receives the sleep start command C5021.
(Step S5611) The GPS control unit 660 transmits response information for the received sleep start command C5021 to the camera control unit 170.
(Step S5612) The camera control unit 170 receives the response information from the GPS control unit 660.

(Step S5613) The GPS control unit 660 controls to stop the operation (positioning or generation of the first GPS information) of the GPS module unit 650 based on the received sleep start command C5021.
(Step S5614) The GPS control unit 660 performs control so as to only generate time information by the RTC 653 and hold data stored in the storage unit 652a in the GPS module unit 650.

(Step S5615) The camera control unit 170 transmits, to the GPS control unit 660, a power supply stop command C5022 indicating stop of power supply from the camera 10a to the accessory 600.
(Step S5616) The GPS control unit 660 receives the power supply stop command C5022.
(Step S5617) The GPS control unit 660 transmits response information to the received power supply stop command C5022 to the camera control unit 170.
(Step S5618) The camera control unit 170 receives response information to the power supply stop command C5022.

(Step S5619) The camera control unit 170 determines whether or not the power supply continuation flag is set in the nonvolatile memory 160. If it is determined that the power supply continuation flag is not set (step S5619; No), the process proceeds to step S5620. If it is determined that the power supply continuation flag is set (step S5619; Yes), the process proceeds to step S5621.

(Step S5620) After determining that the power supply continuation flag is not set and receiving the response information to the power supply stop command C5022, the camera control unit 170 stops the power supply to the accessory 600. That is, the camera control unit 170 stops the supply of the power PWR supplied through the terminal unit 25 to the accessory 600.

(Step S5621) The camera control unit 170 controls the camera 10a to enter a sleep state. Here, if it is determined in step S5619 that the power supply continuation flag is set (step S5619; Yes), the camera control unit 170 does not stop the power supply to the accessory 600 and switches the camera 10a. Go to sleep.
(Step S5622) The camera control unit 170 detects whether or not the setting switch 104 or the release button 16 has been operated while maintaining the sleep state. In this case, for example, when the setting switch 104 or the release button 16 is operated, an interrupt signal is input to the camera control unit 170. By detecting the interrupt signal, the camera control unit 170 returns from the sleep state. If it is determined that the setting switch 104 or the release button 16 has been operated (step S5622; Yes), the process proceeds to step S5623. When it is determined that the setting switch 104 or the release button 16 is not operated (Step S5622; No), Step S5622 is repeated.

(Step S5623) When it is determined that the setting switch 104 or the release button 16 or the like has been operated, and when the flag for continuation of power supply is set in the nonvolatile memory 160, the camera control unit 170 attaches an accessory to the shoe seat 15. Whether or not 600 is attached is determined based on whether or not the signal level of the activation detection level DET is L level. When it is determined that the signal level of the activation detection level DET is the L level, the camera control unit 170 performs an initial communication sequence with the accessory 600.
Next, the GPS control unit 660 controls the GPS module unit 650 to start positioning based on the transmission information of the GPS drive request information transmitted from the camera control unit 170 in the initial communication sequence.

  As described above, the accessory 600 having a GPS function controls the GPS control unit 660 to stop positioning by the GPS module unit 650 when the camera 10a shifts to the sleep state. Thereafter, the GPS control unit 660 controls the GPS module unit 650 to shift to the sleep state. In this embodiment, the GPS module unit 650 is set in the sleep state to suppress power consumption. However, the operation of the GPS control unit 660 is limited (sleep process), and the GPS control unit 660 is connected to the GPS control unit 660. In addition, power consumption may be further reduced by reducing power consumption. (Standby state described later.)

  For example, the GPS control unit 660 controls only the GPS module unit 650 to the sleep state based on the sleep start command C5021. Then, the GPS control unit 660 may count the clock generated by the RTC 653 and perform control so that the own unit enters a sleep state regardless of a command of the camera 10a after a predetermined time has elapsed. Alternatively, after receiving the power supply stop command C5022 from the camera 10a, the GPS control unit 660 counts the clock generated by the RTC 653 and performs control so that the own unit enters a sleep state after a predetermined time has elapsed. May be.

Next, with reference to FIG. 42, a case where the power of the camera 10a is turned off will be described.
The camera 10a is automatically turned off when the non-operation state continues for a predetermined period other than when the user presses the power switch 31. (Hereinafter, automatically turning off the power of the camera 10a is referred to as auto power off.) When the power of the camera 10a is turned off, the accessory 600 shifts to a standby state. The standby state of the accessory 600 is an operation state in which the GPS module unit 650 is set to the sleep (power saving mode) state and the GPS control unit 660 is also set to the sleep (power saving mode) state.
Steps S5601 to S5606 are the same as those in the case of power control of the accessory 600 that shifts to the sleep state (FIG. 42). Only processing different from the case of power supply control of the accessory 600 that shifts to the sleep state will be described.

(Step S5607) After the accessory 600 starts positioning, the camera control unit 170 determines whether or not the user is set to perform an auto power-off process on the camera 10a. The auto power-off process is a process for automatically controlling the power of the camera 10a and the accessory 600 to be turned off when the camera 10a is not operated within a predetermined time. If it is determined that the setting for performing the auto power-off process is not made (step S5607; No), the process returns to step 5602. If it is determined that the setting for performing the auto power-off process is made (step S5607; Yes), the process proceeds to step S5608.

Even in the case of performing the auto power off process, the camera 10a transmits a sleep start command C5021 to the GPS control unit 660 after determining that the no-operation state continues for a predetermined time (step S5609).
The GPS control unit 660 transmits response information to the camera control unit 170 in response to the sleep start command C5021. In addition, the GPS control unit 660 controls the GPS module unit 650 to enter the sleep state in accordance with the sleep start command C5021, and thereafter controls the own unit to enter the sleep state (steps S5610 to S5614).
Then, when the power supply continuation flag is set in the nonvolatile memory 160 (step S5619; Yes), the camera control unit 170 continues to supply power to the accessory 600 even after the camera 10a is automatically powered off. .

The reason why the power supply to the accessory 600 is continued even after the camera 10a is automatically turned off will be described.
The GPS module unit 650 receives GPS information (navigation message) from a positioning satellite, and generates first GPS information (NMEA data) based on the received GPS information. Further, the GPS control unit 660 converts the first GPS information generated by the GPS module unit 650 to generate second GPS information.
The GPS information has a valid period as described above. The effective period of the ephemeris data is 2 hours ± 2 hours. The valid period of the almanac data is epoch time ± 3 days. After the validity period of these data has passed, the GPS module unit 650 needs to receive the GPS information again, so that it takes a long time to start positioning. Therefore, even if the user performs shooting immediately after the camera 10a is turned on, the second GPS information cannot be obtained from the accessory 600.

In order to avoid such a situation, even if the accessory 600 is in a standby state, the accessory 600 counts using the time information of the RTC 653 and is activated at intervals of, for example, 30 minutes to acquire GPS information. The GPS module unit 650 stores the first GPS information based on the acquired GPS information in the storage unit 652a in the GPS module unit 650, and then shifts to the standby state again.
When the camera 10a is turned on, the GPS control unit 660 can quickly generate the second GPS information by using the first GPS information stored in the storage unit 652a in the GPS module unit 650. Can do. Therefore, even if shooting is performed immediately after the camera 10 a is turned on, the camera 10 a can immediately obtain the second GPS information from the accessory 600.
In order to allow the accessory 600 to perform such control, the camera control unit 170 continues to supply power to the accessory 600 even after the power of the camera 10a is turned off.

In the above description, auto power-off has been described as an example. However, even when the power is turned off by the power switch 31, the camera control unit 170 performs the processing of steps S5609 to S5619. That is, the sleep start command C5021 is transmitted to the GPS control unit 660 (step S5609).
The GPS control unit 660 transmits response information to the camera control unit 170 in response to the sleep start command C5021. In addition, the GPS control unit 660 controls the GPS module unit 650 to enter the sleep state in accordance with the sleep start command C5021, and thereafter controls the own unit to enter the sleep state (steps S5610 to S5613).
When the power supply continuation flag is set in the nonvolatile memory 160 (step S5619; Yes), the camera control unit 170 continues to supply power to the accessory 600 even after the camera 10a is powered off.

  Next, with reference to FIG. 43, the removal process (power-off process) of the accessory 600 by the operation part 630 is demonstrated. FIG. 43 is a diagram illustrating a procedure of the removal process (power-off process) of the accessory 600 according to the present embodiment.

(Step S5701) The GPS control unit 660 detects whether the operation unit 630 has been operated (unlock operation) by the user. When the operation unit 630 is not operated (step S5701; No), step S5701 is repeated. When the operation unit 630 is operated (step S5701; Yes), the process proceeds to step S5702.

(Step S5702) When it is detected that the operation unit 630 has been operated (an operation to release the lock), the activation state providing terminal Ts7 of the accessory 600 is disconnected from the GND (reference potential), and the activation state providing terminal Ts7 is disconnected. The potential becomes H (high) level.

(Step S5703) The camera control unit 170 performs determination processing for determining whether or not the signal level of the activation detection level DET is L level. When it is determined that the signal level of the activation detection level DET is the L level (step S5703; Yes), the camera control unit 170 determines that the accessory 600 is attached to the camera 10a, and performs the determination process of step S5703. Try again. When it is determined that the signal level of the activation detection level DET is not the L level (step S5703; No), the process proceeds to step S5704.

(Step S5704) When the signal level of the activation detection level DET that is not the L level is detected, the GPS control unit 660 controls to stop the positioning by the GPS module unit 650.

(Step S5705) If it is determined in step S5703 that the signal level of the activation detection level DET is not the L level, the camera control unit 170 stops the power supply to the accessory 600.

(Step S5706) The GPS control unit 660 performs a power-off process. In the power-off process, power supply from the power supply unit 670 of the accessory 600 to each unit is interrupted. Power is supplied from the secondary battery 665 to the storage unit 652a and the RTC 653 in the GPS module unit 650.
As a result, the GPS module unit 650 uses the power of the secondary battery 665 only to generate time information by the RTC 653 and to hold data stored in the storage unit 652a in the GPS module unit 650.

  As described above, when the accessory 600 is removed from the camera 10a by the operation unit 630 of the accessory 600, the power supply from the camera 10a is stopped. After the power supply from the camera 10 a is stopped, the accessory 600 generates time information by the RTC 653 using the power of the secondary battery 665 and holds the data stored in the storage unit 652 a in the GPS module unit 650. Do.

  Next, with reference to FIG. 44, an operation when the accessory 600 and an external device such as a personal computer are connected via the data terminal 640 with a connection cable will be described. FIG. 44 is a diagram illustrating an example of an operation when a connection cable is connected to the data terminal 640 according to the present embodiment. The connection cable is, for example, a USB cable.

  When the accessory 600 is attached to the camera 10a, when an external device is connected with a connection cable via the data terminal 640, power is supplied to the accessory 600 from the camera 10a. On the other hand, when the accessory 600 is removed from the camera 10 a and an external device is connected to the data terminal 640 via a connection cable, the accessory 600 is supplied with power from the external device via the data terminal 640.

(Step S5801) The user connects the accessory 600 and the personal computer with the connection cable via the data terminal 640.
(Step S5802) When the personal computer is connected, the GPS control unit 660 detects that the personal computer is connected.
When detecting that the personal computer is connected, the GPS control unit 660 sets a flag indicating that the data is invalid in the “GPS data valid / invalid” data of the second GPS information. Also, the GPS control unit 660 controls the GPS module unit 650 to stop positioning.

(Step S5803) The camera control unit 170 transmits the second GPS data transmission request command C5011 to the GPS control unit 660.
(Step S5804) The GPS control unit 660 receives the second GPS data transmission request command C5011 from the camera control unit 170.
(Step S5805) The GPS control unit 660 transmits the second GPS information to the camera 10a in accordance with the second GPS data transmission request command C5011.
(Step S5806) The camera control unit 170 receives the second GPS information from the GPS control unit 660.

(Step S5807) The camera control section 170 determines whether or not a flag indicating that the data is invalid is set in the “GPS data valid / invalid” data of the received second GPS information. When it is determined that the flag indicating that the data is invalid is set, the camera control unit 170 performs GPS data invalidation processing that treats the received second GPS information as invalid.
Since the second GPS information is invalid, the camera control unit 170 does not generate image file data using the received second GPS information.
The GPS control unit 660 transmits the second GPS information including a flag indicating that the data is invalid until the communication via the connection cable is completed.

  Alternatively, when various commands are transmitted from the camera 10a during communication with a personal computer or the like, the GPS control unit 660 regards the command transmitted by the camera control unit 170 as invalid. The response or data may not be transmitted in response to the command transmitted by the camera 10a. In this case, even if the camera control unit 170 transmits a command to the GPS control unit 660, the command to the GPS control unit 660 is received in response to no response or data transmission from the GPS control unit 660 within a predetermined period. It is determined to be invalid. In this case, the GPS control unit 660 may store the received command in the buffer memory 663. The GPS control unit 660 may transmit data corresponding to the transmitted command after communication with the personal computer or the like is completed.

  In this case, the commands to be stored and held are, for example, a sleep start command (FIGS. 41 and 42), a power supply stop command (FIG. 42), and the like. When the sleep start command is suspended, the GPS control unit 660 reads the stored sleep start command after the connection with the personal computer via the data terminal 640 is released, and performs the sleep process.

Next, an example of the operation of the accessory 600 and the personal computer when connected by a connection cable will be described.
The personal computer transmits an instruction indicating a GPS data request to the accessory 600 via the connection cable. The GPS control unit 660 transmits the first GPS information or the second GPS information to the personal computer in response to an instruction indicating a GPS data request.
In addition, assist data is transmitted from the personal computer to the accessory 600 via a connection cable. The assist data is the orbit information of the positioning satellite necessary for acquiring the position information. By storing this data in the accessory 600, the time until the GPS module unit 650 acquires the position information can be shortened. It is data. In this case, the personal computer acquires the assist data in advance via a network (not shown). Further, the valid period of the assist data is about 30 days.

As described above, in the present embodiment, the GPS control unit 660 extracts only information necessary for generating an image file (Exif file) from the first GPS information (NMEA data) output by the GPS module unit 650, Data unnecessary for image file creation is deleted to generate second GPS information. In addition, the GPS control unit 660 converts data from the GPS module unit 650 into 1-byte data when generating the second GPS information. Furthermore, the GPS control unit 660 determines whether information can be acquired, generates a flag for the GPS data acquisition information, and generates the second GPS information including the generated information acquisition permission flag. In addition, the GPS control unit 660 generates a flag indicating whether the GPS data is valid or invalid, generates a flag indicating whether the GPS data is in the 2D positioning state or the 3D positioning state, and includes each flag for the generated GPS data acquisition information Second GPS information is generated.
As described above, since the GPS control unit 660 generates the second GPS information necessary for the camera 10a based on the first GPS information, the camera is connected to the camera from the accessory 600 as compared with the case where the first GPS information is output to the camera. The amount of data transmitted to 10a can be reduced. As a result, the load on the camera control unit 170 can be reduced. The GPS control unit 660 also includes data necessary for generating an image file (information indicating latitude, information indicating longitude, information indicating altitude, information indicating coordinated universal time, and information indicating the number of satellites used for positioning. The second GPS information including the flag generated by determining the flag indicating whether the information indicating the reliability of positioning, the information indicating the traveling direction, and the ground information) can be acquired or not earned is generated.
As a result, the accessory 600 can transmit data to the camera 10a by adding information indicating whether the data is valid or invalid, and whether each data has been acquired or not acquired.

In the present embodiment, the camera 10a does not need to extract data necessary for generating an image file from the second GPS information received from the accessory 600. Further, the camera 10a confirms a flag indicating whether data can be acquired or not yet earned, and whether or not each data necessary for generating an image file has been acquired is error data. Therefore, it is not necessary to determine whether or not the data is appropriate. Therefore, the camera 10a can determine the validity of each data based on information indicating whether the data is valid or invalid, and whether each data is acquired or not acquired. As a result, the load on the camera control unit 170 can be reduced. In addition, even when data including an error is received from the accessory 600, the camera 10a can prevent an image file from being generated using the received data and displayed on the display unit 102, and the generated image file can be captured. It is possible to prevent the image data from being stored in the memory 140 in association with the processed image data.
Moreover, when the information which shows UTC contained in the 2nd GPS information received from the accessory 600 is acquirable, the camera 10a sets the time of the camera 10a using the information which shows UTC based on the setting of the camera 10a. For this reason, the camera 10a is information indicating the UTC acquired by the accessory 600 even when the time set by the user is shifted or when the battery of the camera 10a is consumed and the set time is shifted. The time can be adjusted based on the above.

In the present embodiment, a sleep start command is transmitted to the accessory 600 before the camera 10a transitions to the sleep state, the power-off state, or the auto power-off state. The accessory 600 stops the operation of the GPS module unit 650 after transmitting a response to the received sleep start command.
In the present embodiment, the camera 10 a transmits a power supply stop command to the accessory 600 after receiving a response to the sleep start command from the accessory 600. The accessory 600 transmits a response to the power supply stop command. If the camera 10 a receives a response to the power supply stop command from the accessory 600 and determines that the power supply continuation flag is set in the nonvolatile memory 160, the camera 10 a receives the accessory from the camera 10 a via the terminal unit 25. While continuing the power supply to 600, the camera 10a is controlled to a sleep state, a power-off state, or an auto power-off state.
That is, the camera 10a according to the present embodiment first transmits a sleep start command for stopping the operation of the GPS module unit 650 before transitioning to the sleep state, the power-off state, or the auto power-off state. After receiving a response to, a two-step process is performed to transmit a power supply stop command.
As a result, the accessory 600 can store the measured data in the storage unit 652a by the sleep process and save it. The accessory 600 also counts using the time information of the RTC 653 during the sleep process, and starts up at intervals of 30 minutes, for example, to acquire GPS information. And since the accessory 600 has memorize | stored the 1st GPS information based on the acquired GPS information in the memory | storage part 652a in the GPS module part 650, when the power supply of the camera 10a is turned on from a sleep state, a GPS module part By using the first GPS information stored in the storage unit 652a in 650, the GPS control unit 660 can quickly generate the second GPS information. Therefore, even if shooting is performed immediately after the camera 10 a is turned on, the camera 10 a can immediately obtain the second GPS information from the accessory 600.

In the present embodiment, when the operation unit 630 of the accessory 600 is unlocked, the accessory 600 controls to stop positioning by the GPS module unit 650. Thereafter, in the accessory 600, the GPS control unit 660 performs a power-off process.
When the operation unit 630 of the accessory 600 is unlocked, the camera 10a detects that the activation detection level (DET) has changed from the L level to the H level. After detecting the change to the H level, the camera 10 a stops supplying power to the accessory 600 via the terminal unit 25.
After the power supply from the terminal unit 25 of the camera 10 a is stopped, the accessory 600 supplies power from the secondary battery 665 to the storage unit 652 a and the RTC 653 in the GPS calculation unit 652.
As a result, the accessory 600 can be normally stopped, and the first GPS information can be stored in the storage unit 652a by the sleep process and can be evacuated. And the accessory 600 hold | maintains the 1st GPS information memorize | stored in the memory | storage part 652a of the GPS module part 650 using the electric power supplied from the secondary battery 665 after lock release, and continues the time measurement of RTC653. As a result, even when the accessory 600 is attached to the camera 10a again, positioning can be started quickly.

  In the present embodiment, the GPS control unit 660 of the accessory 600 returns from the standby state by detecting that the communication control signal Cs from the camera 10a has changed from the L level to the H level during the standby state. As a result, when the camera 10a returns from the standby state, the accessory 600 can also quickly return from the standby state and can communicate with the camera 10a.

  In the present embodiment, the camera 10a stops the second steady communication with the accessory 600 when capturing a still image. Furthermore, the camera 10a transmits a sleep start command to the accessory 600 after stopping the second steady communication when capturing a moving image. As a result, the camera 10a can cause the accessory 600 to transition to the sleep state when shooting a moving image, so that the power consumption of the accessory 600 can be reduced.

  In the present embodiment, the accessory 600 transmits to the camera 10a the extended function characteristic information including the power supply continuation information indicating whether the power supply needs to be continued even when the camera 10a is in the sleep state. . Based on the extended function characteristic information transmitted by the accessory 600, the camera 10a detects the supply continuation information even when the camera 10a is in the sleep state. When the supply continuation information is detected, the camera 10a can continue to supply power to the accessory 600 even after the camera 10a transitions to the sleep state. As a result, the accessory 600 can continue positioning even when the camera 10a is in the sleep state. Therefore, after the camera 10a returns from the sleep state, it is possible to transmit the positioning data quickly to the camera 10a. it can.

In the present embodiment, the accessory 600 includes the data terminal 640. When the connection cable is connected to the data terminal 640 and communication is performed with the personal computer, the accessory 600 can transmit assist data from the personal computer to the accessory 600 or write the assist data to the accessory 600. As a result, the GPS control unit 660 can receive the received data from the positioning satellite using the assist data, so that it is possible to shorten the time required for positioning after the sleep release or after the power supply is started. Moreover, since the time required for positioning can be shortened, the power consumption of the accessory 600 can be reduced. Also, depending on the assist data acquired from the network, the effective period of the satellite orbit data can be about 7 days at the maximum, so that the interval for acquiring and updating the navigation message from the positioning satellite can be extended.
Further, the accessory 600 invalidates a command transmitted from the camera 10a when a connection cable is connected to the data terminal 640 and communication with a personal computer is performed. In addition, the accessory 600 suspends processing for a command transmitted from the camera 10a during communication with a personal computer via a connection cable, and performs processing for the suspended command after communication with the personal computer is completed. As a result, the accessory 600 can communicate with a command that cannot be executed during communication with the personal computer after the communication with the personal computer is completed.

In the present embodiment, the accessory 600 has been described as an example having a GPS function. The accessory 600 may further include other functions, for example. In such a case, the camera 10a and the accessory 600 perform a 1st regular communication sequence every 200 msec similarly to the accessory 400 regarding another function. After the end of the first steady communication sequence, the camera 10a and the accessory 600 perform the second steady communication sequence every 400 msec.
Further, in the case of the accessory 400 that does not include the GPS function illustrated in FIG. 7, the accessory control unit 440 transmits function expansion type information indicating that the camera 10a (or 10) does not include the expansion function in the initial communication sequence. To do. For this reason, since the camera control unit 170 determines that there is no extended function in the initial communication sequence, the camera control unit 170 does not request the accessory 400 to transmit the extended function characteristic information. As a result, the accessory 400 does not request the camera control unit 170 to continue supplying power even in the sleep state or the standby state.

As described above, in the present embodiment, the accessory 600 having the extended function transmits, to the camera 10a, information that continues to supply power even in the sleep state or the standby state in the initial communication sequence. Or the accessory 400 which does not have an extended function does not transmit the information which continues supply of electric power to 10a by an initial stage communication sequence even in a sleep state or a power-off state. Based on this supply continuation information, the camera 10a controls whether or not to continue supplying power even in a sleep state or a standby state.
For this reason, in the accessory 600 including a GPS function unit that performs processing even in the sleep state or the standby state, the accessory 600 continues to supply power from the camera 10a even in the sleep state or the standby state. As a result, positioning can be quickly started after the sleep state is canceled or the standby state is canceled.
On the other hand, in the accessory 400 that does not include a GPS function unit that does not perform processing in the sleep state or the standby state, the power supply is not continued from the camera 10a to the accessory 400 in the sleep state or the standby state. As a result, when the camera 10a is in the sleep state, the accessory 400 is also controlled in the sleep state, and power saving can be realized.

  Note that, in the camera system 1a of this embodiment, the camera control unit 170 receives information from the GPS control unit 660 in the initial communication sequence, as in the first modification (FIG. 25) to the third modification (FIG. 27) of the accessory 400. You may make it determine whether reception was performed normally. For example, when the camera control unit 170 cannot receive the accessory initial state information from the GPS control unit 660, or the received accessory initial state information does not include information on at least one item specified by the transmission request command C1. In this case, it may be determined that the information has not been normally received. Then, the camera control unit 170 may notify the accessory 600 that the supply of power is to be stopped, and then perform a process of stopping the supply of power to the accessory 600.

[Explanation about camera with GPS function]
Next, an example in which a GPS unit having a GPS function is built in the camera body will be described.
FIG. 45 is a diagram illustrating an appearance of the camera system 1b according to the present embodiment. FIG. 46 is a view of the camera system 1b of the present embodiment as viewed from the opposite side to FIG.
The camera system 1b shown in FIGS. 45 and 46 includes a GPS unit 600b in the camera 10b. The external appearance of the camera 10b is the same as the external appearance of the camera 10 shown in FIGS. 1 and 2 and the external appearance of the camera 10a shown in FIGS. 28 and 29 except for the LED 635 and the data terminal 640 (first information communication unit). . Note that the side surface 17A is a left side surface when viewed from the front surface 12 among the side surfaces facing the front surface 12 on which the mount 11 is disposed. The side surface 17 </ b> B is a right side surface as viewed from the front surface 12 among the side surfaces facing the front surface 12 on which the mount 11 is disposed.

  As shown in FIG. 46, the camera body 100b includes a display unit 102 disposed on the back surface 14, a setting switch 104 disposed on the back surface 14, an LED 635 disposed on the back surface 14, and a data terminal 640 disposed on the side surface 17. Is provided. The LED 635 and the data terminal 640 have functions equivalent to those of the accessory 600 shown in FIG. In this embodiment, an example in which the LED 635 is disposed on the back surface 14 is shown, but the LED 635 and the data terminal 640 may be omitted. In this case, the camera 10b may display information indicated by turning off or turning on the LED 634 on the display unit 102, for example. Moreover, the data terminal 640 may be arrange | positioned at the side surface 17B or the back surface 14, for example.

  The GPS unit 600b included in the camera 10b according to the present embodiment has a GPS function like the accessory 600, and can perform position measurement. The camera 10b can communicate with the GPS unit 600b to control the GPS unit 600b. For example, the camera 10b can measure the imaging position by the GPS unit 600b and store the imaging position information measured in association with the image data captured by the camera 10b in the memory 140 (see FIG. 6).

The components inside the camera 10b are the same as those of the camera 10a described in FIG. 32 except that the GPS unit 600b is included. Therefore, in the following description, the same name and code | symbol are attached | subjected about the same component, and the description may be simplified or abbreviate | omitted.
FIG. 47 is a configuration diagram illustrating a connection relationship between the camera 10b and the GPS unit 600b according to the present embodiment. As shown in FIG. 47, the camera 10b includes a load unit 30, a power switch 31, a power supply unit 32, an accessory power supply control unit 33b, a clock unit 34, and a GPS unit 600b. Differences from the camera 10b are an accessory power supply control unit 33b, a camera control unit 170b, and a GPS unit 600b.

The accessory power supply control unit 33b includes a first terminal, a second terminal, a third terminal, and a control terminal. A third terminal of the accessory power supply control unit 33b is connected to a power supply (PWR) terminal of the GPS unit 600b. Note that the power of the GPS unit 600b may be supplied from the power supply unit 32 without passing through the accessory power supply control unit 33b.
The camera control unit 170b communicates with the accessory 400 via the terminal unit 25, and in addition to a control signal for controlling the accessory 400, a GPS control signal for communicating with the GPS unit 600b and controlling the GPS unit 600b It is connected to the GPS unit 600b. In the present embodiment, the GPS control signal is a communication signal DATA, a communication control signal Cs that determines the communication timing between the camera 10b and the GPS unit 600b, and a synchronization signal (a communication clock signal output from the GPS unit 600b). Clock signal) CLK.

The GPS unit 600b has the same function units as those of the accessory 600 shown in FIG. Although not shown, the GPS unit 600b includes a GPS module unit 650, a GPS control unit 660, a buffer memory 663, and the like. Therefore, in the following description, the same name and code | symbol are attached | subjected about the same component, and the description may be simplified or abbreviate | omitted.
The power supply terminal of the GPS unit 600b is connected to the third terminal of the accessory power supply control unit 33b. The GND terminal of the GPS unit 600b is connected to a ground line (SGND) 42 and a ground line (GND) 43 on the camera 10b side. The GPS unit 600b is connected to the camera control unit 170b to the communication control signal Cs, the communication signal DATA, and the synchronization signal CLK.

  In the example illustrated in FIG. 47, the camera control unit 170b and the GPS unit 600b are connected by serial communication. However, the connection between the camera control unit 170b and the GPS unit 600b is performed by parallel communication. It may be a connection.

Next, processing performed by the camera control unit 170b of the camera 10b and the GPS control unit 660 (see FIG. 31) of the GPS unit 600b will be described.
The camera system 1b performs processing in the camera system 1b as in FIG. In the camera system 1b of the present embodiment, instead of communication performed by the camera control unit 170 of the camera 10a and the GPS control unit 660 of the accessory 600, the GPS control of the camera control unit 170b of the camera 10b and the GPS unit 600b is performed. Communication is performed with the unit 660.
Therefore, in the camera system 1b of the present embodiment, the initial communication sequence (FIGS. 37, 12, and 13), the second steady communication sequence (FIG. 38), the GPS data update (FIG. 39), and the processing for taking a still image (FIG. 40) In the process of shooting a movie (FIG. 41), the power control by the camera (FIG. 42), and the data communication process (FIG. 44) between the GPS unit 600b and an external device (FIG. 44), the flow on the left side of the figure is the camera body 100b. The right side in the figure is the processing content in the GPS control unit 660 of the GPS unit 600b.

  For example, when the accessory 400 is attached to the shoe seat 15, the camera system 1 b according to the present embodiment has an initial communication sequence with the accessory 400 shown in FIGS. 12 and 13 in addition to the initial communication sequence with the GPS unit 600 b. The communication sequence and the steady communication sequence shown in FIGS. 15 and 16 are performed. In this case, the camera control unit 170b performs steady communication with the accessory 400 at a cycle T, and performs first steady communication with the GPS unit 600b at a cycle 2T. In addition, the camera control unit 170b performs second steady communication with only the GPS unit 600b.

Next, power control of the GPS unit 600b by the camera 10b will be described.
In the camera system 1b of the present embodiment, since the GPS unit 600b is built in the camera body 100b, the processes in steps S5601 and S5602 are not performed and the process starts from step S5603 in the process illustrated in FIG. . Hereinafter, the camera control unit 170b and the GPS control unit 660 perform the processes of steps S5603 to S5622.

  As described above, the GPS unit 600b controls the GPS control unit 660 to stop positioning by the GPS module unit 650 when the camera 10b shifts to the sleep state. Thereafter, the GPS control unit 660 controls the GPS module unit 650 to shift to the sleep state. In this embodiment, the GPS module unit 650 is set in the sleep state to suppress power consumption. However, the operation of the GPS control unit 660 is limited (sleep process), and the GPS control unit 660 is connected to the GPS control unit 660. In addition, power consumption may be further reduced by reducing power consumption.

  For example, the GPS control unit 660 controls only the GPS module unit 650 to the sleep state based on the sleep start command C5021. Then, the GPS control unit 660 may count the clock generated by the RTC 653 and perform control so that the own unit enters a sleep state regardless of a command of the camera 10b after a predetermined time has elapsed. Alternatively, after receiving the power supply stop command C5022 from the camera 10b, the GPS control unit 660 counts the clock generated by the RTC 653 and performs control so that the self unit enters a sleep state after a predetermined time has elapsed. May be.

  For example, when the accessory 400 is attached to the shoe seat 15, the camera system 1b of the present embodiment performs power control of the accessory 400 as shown in FIG. 11 in addition to power control of the GPS unit 600b. Also good.

As described above, the camera system 1b of the present invention includes an imaging unit (camera 10b), a positioning unit (GPS module unit 650) that performs positioning, and a control unit (GPS control unit 660) that controls the positioning unit. The control unit shifts at least one of the positioning unit and the control unit to a power saving mode while the photographing unit continues a predetermined operation.
Thereby, in the camera system 1b in this embodiment, the effect similar to the camera system 1a including the accessory 600 which has a GPS function is acquired.
For example, in the camera system 1b according to this embodiment, the camera control unit 170b transmits a sleep start command to the GPS unit 600b before the camera 10b transitions to a sleep state, a power-off state, or an auto power-off state. The GPS unit 600b transmits a response to the received sleep start command, and then stops the operation of the GPS module unit 650.
In the camera system 1b according to the present embodiment, the camera control unit 170b transmits a power supply stop command to the GPS unit 600b after receiving a response to the sleep start command from the GPS unit 600b. The GPS control unit 660 of the GPS unit 600b transmits a response to the power supply stop command. Then, after receiving a response to the power supply stop command from the GPS unit 600b, when the camera control unit 170b determines that the power supply continuation flag is set in the nonvolatile memory 160, the camera control unit 170b supplies power to the GPS unit 600b. While continuing, the camera 10b is controlled to a sleep state, a power-off state, or an auto power-off state.
That is, the camera 10b according to the present embodiment first transmits a sleep start command for stopping the operation of the GPS module unit 650 before transitioning to the sleep state, the power-off state, or the auto power-off state. After receiving a response to, a two-step process is performed to transmit a power supply stop command.
As a result, the GPS unit 600b can store the measured data in the storage unit 652a by the sleep process and save it. Further, the GPS unit 600b counts using the time information of the RTC 653 even during the sleep process, and starts up at intervals of, for example, 30 minutes to acquire GPS information. And since the GPS part 600b has memorize | stored the 1st GPS information based on the acquired GPS information in the memory | storage part 652a in the GPS module part 650, when the power supply of the camera 10b is turned on from a sleep state, a GPS module By using the first GPS information stored in the storage unit 652a in the unit 650, the GPS control unit 660 can quickly generate the second GPS information. Therefore, even if shooting is performed immediately after the camera 10b is turned on, the camera 10b can immediately obtain the second GPS information from the GPS unit 600b.

  In the present embodiment, the camera 10a stops the second steady communication with the GPS unit 600b when capturing a still image. Furthermore, the camera 10a transmits a sleep start command to the GPS unit 600b after stopping the second steady communication when capturing a moving image. As a result, the camera 10a can cause the GPS unit 600b to transition to the sleep state when shooting a moving image, so that power consumption by the GPS unit 600b can be reduced.

  In the camera system 1b according to the present embodiment, the GPS unit 600b has characteristics of an extended function including power supply continuation information indicating whether the camera 10b needs to continue power supply even when the camera 10b is in the sleep state. Information is transmitted to the camera control unit 170b. Based on the extended function characteristic information transmitted from the GPS unit 600b, the camera control unit 170b detects the supply continuation information even when the camera 10b is in the sleep state. When the supply continuation information is detected, the camera 10b can continue to supply power to the GPS unit 600b even after the camera 10b transitions to the sleep state. As a result, the GPS unit 600b can continue positioning even when the camera 10b is in the sleep state. Therefore, after the camera 10b returns from the sleep state, the GPS unit 600b transmits the quickly measured data to the camera control unit 170b. can do.

  In addition, although the camera system 1b of this embodiment demonstrated the example provided with the camera control part 170b and the GPS control part 660, the GPS control part 660 may not be provided. In this case, the camera control unit 170b may control the GPS unit 600b.

  Note that, in the camera system 1b of the present embodiment, the camera control unit 170b receives information from the GPS control unit 660b in the initial communication sequence, as in the first modification (FIG. 25) to the third modification (FIG. 27) of the accessory 400. You may make it determine whether reception was performed normally. For example, the camera control unit 170b cannot receive the accessory initial state information from the GPS control unit 660b, or the received accessory initial state information does not include information on at least one item specified by the transmission request command C1. In this case, it may be determined that the information has not been normally received. Then, the camera control unit 170b may notify the GPS unit 600b that power supply is to be stopped, and then perform processing for stopping power supply to the GPS unit 600b.

The technical scope of the present invention is not limited to the above embodiment. At least one of the requirements described in the above embodiments may be omitted. The requirements described in the above embodiments can be combined as appropriate.
For example, in this embodiment, positioning information and the like are generated using GPS, but the present invention is not limited to this, and a well-known positioning system used in a mobile phone or the like may be used.
Further, the data terminal 640 connected to the external device may be configured to perform wireless communication.

  The camera body 100 (or 100a, 100b) and the accessory 400 (or 600, GPS unit 600b) described above have a computer system inside. The operation process of each functional unit is stored in a computer-readable recording medium in the form of a program, and the above processing is performed by the computer system reading and executing the program. Here, the computer system includes a CPU, various memories, an OS, and hardware such as peripheral devices.

  Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, it also includes those that hold a program for a certain period of time, such as a volatile memory inside a computer system serving as a server or client in that case. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

DESCRIPTION OF SYMBOLS 1, 1a, 1b ... Camera system 10, 10a, 10b ... Camera, 15 ... Shoe seat (accessory shoe), 25 ... Terminal part, 165 ... Buffer memory, 422 ... Locking claw (movable member), 423... Terminal portion, 424... First operation portion, 430... Flashing light emitting portion (light emitting portion), 435. ... Switch unit, 470 ... Switch unit, 475 ... Signal generation unit, Tp1 ... Ground terminal, Tp2 ... Ground terminal, Tp3 ... Reference potential terminal, Tp4 ... Synchronous signal terminal , Tp5: reference potential terminal, Tp6: communication signal terminal, Tp7: activation detection level terminal, Tp8: light emission control signal terminal, Tp9: communication control signal terminal, Tp10: open terminal , Tp11 ... power supply end , Tp12: power supply terminal, Ts1: ground terminal, Ts2: ground terminal, Ts3: reference potential terminal, Ts4: synchronization signal terminal, Ts5: reference potential terminal, Ts6 ... Communication signal terminal, Ts7... Start state providing terminal, Ts8... Light emission control signal terminal, Ts9... Communication control signal terminal, Ts10... Open terminal, Ts11. Terminal, CLK ... Sync signal, DET ... Start-up detection level, DATA ... Communication signal, PWR ... Power, PGND ... Reference potential, SGND ... Reference potential, X ... Light emission control Signal 33, 33b ... Accessory power supply control unit, 34 ... Time measuring unit, 170,170b ... Camera control unit, 600 ... Accessory, 600b ... GPS unit, 623 ... Terminal unit (Second information communication unit), 630... Operation unit, 635... LED, 640... Data terminal (first information communication unit), 650... GPS module unit (reception unit, positioning unit, or first) 1 data generation unit), 660... GPS control unit (second data generation unit, control unit, or accessory control unit), 663... Buffer memory (second storage unit), 664. ... Secondary battery, 651 ... Antenna, 652 ... GPS calculation unit, 652a ... Storage unit (first storage unit), 653 ... RTC

Claims (13)

A shooting section;
A positioning unit that performs positioning;
A control unit for controlling the positioning unit;
With
The controller is
While the imaging unit continues a predetermined operation, at least one operation of the positioning unit and the control unit is changed to a power saving mode. The controller is
2. The method according to claim 1, wherein when the predetermined operation is continued, after stopping the positioning by the positioning unit, at least one of the positioning unit and the control unit is shifted to a power saving mode. Camera system. 3. The camera system according to claim 1, wherein the predetermined operation is a moving image photographing operation for photographing a moving image, a reproducing operation for reproducing the photographed image, or a long second photographing operation. A camera system having a camera and an accessory,
The camera has the photographing unit,
The camera system according to any one of claims 1 to 3, wherein the accessory includes the positioning unit and the control unit. A camera system having a camera and an accessory,
The camera has the photographing unit and the control unit,
The camera system according to any one of claims 1 to 3, wherein the accessory includes the positioning unit. An accessory that can communicate with the camera,
A positioning unit that performs positioning;
A control unit for controlling the positioning unit;
With
The controller is
While the camera continues a predetermined operation, at least one operation of the positioning unit and the control unit is shifted to a power saving mode. The controller is
7. When the predetermined operation is continued, after stopping the positioning by the positioning unit, at least one operation of the positioning unit and the control unit is shifted to a power saving mode. Accessories. The accessory according to claim 6, further comprising a terminal portion connectable to the camera, wherein electric power is supplied from the camera via the terminal portion. The predetermined operation is a moving image photographing operation for photographing a moving image, a reproducing operation for reproducing a photographed image, or a long-second photographing operation. 9. Accessories. A shooting section;
A positioning unit that performs positioning;
A control unit for controlling the positioning unit;
With
The controller is
While the photographing unit continues a predetermined operation, at least one operation of the positioning unit and the control unit is changed to a power saving mode. A program for causing a computer to execute control of a camera system, comprising: an imaging unit; a positioning unit that performs positioning; and a control unit that controls the positioning unit;
A camera system control program for causing a computer to execute a procedure of transitioning at least one operation of the positioning unit and the control unit to a power saving mode while the photographing unit continues a predetermined operation. A positioning unit that performs positioning, and a control unit that controls the positioning unit, and a program for causing a computer to control accessories that can communicate with the camera,
An accessory control program for causing a computer to execute a procedure for causing at least one of the positioning unit and the control unit to transition to a power saving mode while the camera continues a predetermined operation. A program for causing a computer to execute control of the camera, including a photographing unit, a positioning unit that performs positioning, and a control unit that controls the positioning unit;
A camera control program for causing a computer to execute a procedure for shifting at least one operation of the positioning unit and the control unit to a power saving mode while the photographing unit continues a predetermined operation.

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