WO2014147912A1 - カメラ装置,カメラ・ボディ,交換レンズおよびカメラ・ボディの動作制御方法 - Google Patents
カメラ装置,カメラ・ボディ,交換レンズおよびカメラ・ボディの動作制御方法 Download PDFInfo
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- WO2014147912A1 WO2014147912A1 PCT/JP2013/083836 JP2013083836W WO2014147912A1 WO 2014147912 A1 WO2014147912 A1 WO 2014147912A1 JP 2013083836 W JP2013083836 W JP 2013083836W WO 2014147912 A1 WO2014147912 A1 WO 2014147912A1
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- WIPO (PCT)
- Prior art keywords
- camera
- interchangeable lens
- lens
- control device
- communication
- Prior art date
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/14—Mountings, adjusting means, or light-tight connections, for optical elements for lenses adapted to interchange lenses
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
- G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/18—Signals indicating condition of a camera member or suitability of light
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
- H04N23/663—Remote control of cameras or camera parts, e.g. by remote control devices for controlling interchangeable camera parts based on electronic image sensor signals
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B2206/00—Systems for exchange of information between different pieces of apparatus, e.g. for exchanging trimming information, for photo finishing
Definitions
- the present invention relates to a camera device, a camera body, an interchangeable lens, and a camera body operation control method.
- the genuine interchangeable lens on the camera body does not have a mechanical power transmission mechanism between the camera body and the interchangeable lens.
- the operation of the interchangeable lens can be controlled only by communication with the interchangeable lens (fully electronic mount).
- the lens side determines the mounted camera type, converts the reply data according to the camera type and sends it back to the camera (Patent Document 1), and has two communication modes and the mounted interchangeable lens There is also one that performs communication in a corresponding communication mode (Patent Document 2).
- JP 2009-53523 A JP 2012-154967
- the communication standard between the camera body and the interchangeable lens is different, so even if the camera body is capable of high-speed communication, the interchangeable lens must be unable to communicate at high speed. For example, the communication speed will be slower than an interchangeable lens that can perform high-speed communication.
- This invention is intended to make it possible to control an interchangeable lens at high speed.
- 1st invention is about the camera apparatus provided with the camera body and the interchangeable lens with which this camera body is detachably attached.
- the camera body includes a camera / body communication control device, a camera / body communication terminal that is electrically connected to a communication terminal formed on the interchangeable lens by mounting an interchangeable lens, and a camera / body communication control device. And a camera / body signal line connected between the camera / body communication terminal.
- An interchangeable lens is an interchangeable lens communication control device, a lens drive circuit that drives a lens drive motor, and an interchangeable lens communication terminal that is electrically connected to the camera body communication terminal of the camera body by being attached to the camera body.
- An interchangeable lens data communication line connected between the interchangeable lens communication control device and the interchangeable lens communication terminal, and an interchangeable lens drive signal line connected between the lens drive circuit and the interchangeable lens communication terminal.
- the camera / body communication control device outputs a data communication command for performing data communication with the interchangeable lens according to the interchangeable lens communication command, and outputs an interchangeable lens drive signal according to the interchangeable lens drive command.
- a camera / body signal line is formed between the camera / body communication control device and the camera / body communication terminal in the camera / body.
- an interchangeable lens / data communication line is formed between the interchangeable lens communication control device and the interchangeable lens communication terminal, and an interchangeable lens drive signal line is formed between the lens drive circuit and the interchangeable lens communication terminal.
- the camera / body communication terminal and the interchangeable lens communication terminal are electrically connected, so the data communication command output from the camera / body communication control device is used for interchangeable lens communication control.
- the drive signal output from the camera communication control device can be directly supplied to the lens drive circuit of the interchangeable lens. Since the lens drive circuit of the interchangeable lens can be directly controlled by the camera body, the interchangeable lens can be controlled at high speed.
- the camera / body signal line is connected between the camera / body communication control device and the camera / body communication terminal and performs data communication with the interchangeable lens, and the camera / body communication control device and the camera / body.
- a camera / body drive signal line may be provided which is connected between the communication terminals and transmits a drive signal for driving the interchangeable lens.
- the camera / body communication control device sends a data communication command for performing data communication with the interchangeable lens according to the interchangeable lens communication command to the camera / body / data communication line, and drives the interchangeable lens according to the interchangeable lens drive command.
- the signal will be sent to the camera body drive signal line.
- the camera / body communication control device When there are multiple camera / body communication terminals, camera / body / data communication lines, camera / body drive signal lines, interchangeable lens communication terminals, interchangeable lens / data communication lines, and interchangeable lens drive signal lines.
- the camera / body communication control device will output a driving force control signal for driving the lens driving motor and a driving direction control signal for controlling the lens driving direction of the lens driving motor to the camera / body driving signal line.
- the camera / body communication control device includes a driving force control signal for driving the lens driving motor, a driving direction control signal for controlling the lens driving direction of the lens driving motor, and a driving speed of the lens driving motor on the camera / body driving signal line Is output.
- the camera / body communication control device inputs data representing the position information of the lens driving motor output from the lens driving circuit of the interchangeable lens via the camera / body driving signal line.
- the interchangeable lens further includes a switch command memory that stores a switch command for switching between control of the lens drive circuit by the camera / body communication control device and control of the lens drive circuit by the interchangeable lens communication control device, for example.
- the camera body includes a switching command reading unit that reads the switching command stored in the switching command memory, and a switching command transmission unit that transmits the switching command read by the switching command reading unit to the interchangeable lens communication control device. Will be further provided.
- the interchangeable lens communication control device controls the lens drive circuit by the camera / body communication control device and the lens drive circuit by the interchangeable lens communication control device based on the switch command transmitted from the camera / body switch command transmission means. It switches between control.
- the camera / body communication control device transmits an inquiry command for inquiring about the status of the interchangeable lens, and has received data indicating the status of the interchangeable lens transmitted from the interchangeable lens in response to the inquiry command. In response to this, an interchangeable lens drive signal is output.
- the lens position does not change before and after the driving of the lens driving motor when the lens driving motor is driven based on the switching command.
- the switching command should have a frequency that can be recognized by the lens drive circuit.
- the second invention is a camera body constituting a camera device. It also provides a camera / body motion control method.
- the third is an interchangeable lens constituting the camera device.
- FIG. 1 shows an embodiment of the present invention and is a block diagram showing a part of the electrical configuration of the camera apparatus.
- the camera device includes a camera body 1 and an interchangeable lens 20.
- the camera body 1 includes a body side microcomputer 2 (camera communication control device) that controls the entire operation of the camera body 1.
- the camera body 1 is formed with a mount 3 for mounting the interchangeable lens 20. Further, terminals 11 to 15 are formed on the mount 3.
- the body side microcomputer 2 has ports P1 to P6.
- the ports P1, P2 and P3 are connected to terminals 13, 14 and 15 (camera body communication terminals) formed on the mount 3 via camera body drive signal lines L1, L2 and L3.
- the ports P4, P5 and P6 are connected to terminals 13, 14 and 15 formed on the mount 3 via camera body data communication lines L14, L15 and L16.
- terminals 11 and 12 of the mount 3 are connected to the power source and the ground line, respectively.
- the interchangeable lens 20 includes a communication control microcomputer 30 (interchangeable lens communication control device) that controls the overall operation.
- the communication control microcomputer 30 is connected to a memory 31 for storing predetermined data and the like.
- ports P14, P15 and P16 are formed in the communication control microcomputer 30.
- the interchangeable lens 20 also includes a lens drive motor 33 that controls the lens position.
- a lens driving circuit 32 that controls the lens driving motor 33 is also included in the interchangeable lens 20.
- the lens drive circuit 32 has ports P11, P12 and P13.
- the mount 34 is formed on the interchangeable lens 20. Terminals 21 to 25 are formed on the mount 34.
- Ports P11, P12 and P13 formed in the lens drive circuit 32 are terminals 23, 24 and 25 (exchange lens communication terminals) formed on the mount 34 via interchangeable lens drive signal lines L11, L12 and L13. Connected with.
- the ports P14, P15 and P16 formed in the communication control microcomputer 30 are connected to terminals 23, 24 and 25 formed in the mount 34 via the interchangeable lens / data communication lines L14, L15 and L16. ing.
- the terminals 11, 12, 13, 14 and 15 formed on the mount 3 of the camera body 1 and the terminals formed on the mount 34 of the interchangeable lens 20 21, 22, 23, 24, and 25 are electrically connected.
- the ports P1, P2 and P3 formed in the body side microcomputer 2 of the camera body 1 and the ports P11, P12 and P13 formed in the lens driving circuit 32 of the interchangeable lens 20 are electrically connected. Is done.
- ports P4, P5 and P6 formed in the body side microcomputer 2 of the camera body 1 are electrically connected to ports P14, P15 and P16 formed in the communication control microcomputer 30 of the interchangeable lens 20. Is done.
- a drive control signal for controlling the lens drive motor 33 can be directly given to the lens drive circuit 32 from the ports P 1 and P 2 of the body side microcomputer 2 of the camera body 1. It becomes like this. Further, a signal representing the driving status of the lens driving motor 33 output from the lens driving circuit 32 can be directly input via the port P3 of the body side microcomputer 2. Furthermore, serial clock pulse (SCK) and serial data can be transmitted from the ports P4 and P5 of the body side microcomputer 2 to the communication control microcomputer 30, and serial communication is possible from the port P16 of the communication control microcomputer 30 to the body side microcomputer P6. Can send data.
- SCK serial clock pulse
- serial data can be transmitted from the ports P4 and P5 of the body side microcomputer 2 to the communication control microcomputer 30, and serial communication is possible from the port P16 of the communication control microcomputer 30 to the body side microcomputer P6. Can send data.
- the lens drive circuit 32 of the interchangeable lens 20 can be controlled without using the communication control microcomputer 30 by using the body side microcomputer 2 of the camera 1.
- FIG. 2 corresponds to FIG. 1 and is a block diagram showing the electrical configuration of the camera device.
- FIG. 2 the same components as those shown in FIG.
- the lines L1, L2, and L3 between the ports P1, P2, and P3 of the body side microcomputer 2 and the terminals 13, 14, and 15 of the mount 3 are not formed. 2 and data communication lines L4, L5 and L6 (camera body signal lines) to which terminals 13, 14 and 15 are connected are formed.
- the lens driving circuit 32 can be directly controlled by the body side microcomputer 2 using the data communication lines L4, L5 and L6 as will be described later.
- FIG. 3 corresponds to FIG. 1 and is a block diagram showing an electrical configuration of the camera device.
- FIG. 2 the same components as those shown in FIG.
- the lens drive circuit 32 is included in the interchangeable lens 20A. This lens driving circuit 32 controls the DC motor 35.
- the lines L1 and L2 in the camera body 1 are not necessarily provided.
- FIG. 4 shows the drive signal output from the body side microcomputer 2 and the operating state of the DC motor 35.
- the first drive control signal is output from the port P1 (or port P4) of the body side microcomputer 2 and input to the port 11 of the lens drive circuit 32.
- a second drive control signal is output from the port P2 (or port P5) of the body side microcomputer 2 and input to the port 12 of the lens drive circuit 32.
- FIG. 5 shows the relationship between the signals input to the ports P11 and P12 of the lens driving circuit 32 and the driving state of the DC motor 35.
- the signal input to the port P11 controls the rotation and stop of the DC motor 35. When it becomes L level, the DC motor 35 is stopped, and when it becomes H level, it is rotated.
- the signal input to the port P12 controls the rotation direction of the DC motor 35. When it becomes H level, the DC motor 35 is rotated forward, and when it becomes L level, the DC motor is reversed.
- the first drive control signal input to the port P11 is at the L level, and the DC motor 35 is stopped.
- the DC motor 35 is rotated forward.
- the first drive control signal since the first drive control signal alternates between the H level and the L level, and the second drive control signal is at the H level, the DC motor 35 is rotated forward at a driving force of 50%.
- the first drive control signal is at the H level, but since the second drive control signal is at the L level, the DC motor 35 is reversed.
- the second drive signal becomes H level, the DC motor 35 is rotated forward.
- the first drive control signal becomes L level the DC motor 35 is stopped.
- FIG. 6 shows another embodiment, and is a block diagram showing an electrical configuration of the camera device.
- the same components as those shown in FIG. 6 are identical to those shown in FIG. 6
- the interchangeable lens 20B includes a stepping motor 36 controlled by a lens driving circuit 32.
- a step pulse as a first drive control signal to the port P11 of the lens drive circuit 32
- the rotation and speed of the stepping motor 36 are controlled.
- the second drive control signal to the port P12 of the lens drive circuit 32
- the rotation direction of the stepping motor 36 is controlled.
- the lines L1 and L2 are not necessarily provided.
- FIG. 7 shows a first drive control signal output from the port P1 (or port P3) of the body side microcomputer 2, a second drive control signal output from the port P2 (or port P4) of the body side microcomputer 2, and The state of the stepping motor 36 is shown.
- the stepping motor 36 rotates forward. Conversely, if the first drive control signal is L level, the stepping motor 36 is reversed. Since the first drive control signal is at the H level from time t21 to time t25, the stepping motor 36 rotates in the forward direction when operating. After time t25, since the first drive control signal is at L level, the stepping motor 36 rotates in the reverse direction when operating.
- the rotational speed of the stepping motor 36 changes according to the period of the second drive control signal input to the port P12 of the lens drive circuit 32. From time t21 to time t22 is the first period, from time t22 to time t23 is the second period, and from time t23 to time t24 is the third period. The speed of the stepping motor changes according to these cycles.
- FIG. 8 shows another embodiment, and is a block diagram showing an electrical configuration of the camera device.
- the same components as those shown in FIG. 8 the same components as those shown in FIG. 8.
- a drive control signal is output from the ports P1 and P2 of the camera-side body microcomputer 2 of the camera body 1C as in the example shown in FIG.
- Stepping motor (actuator) position information is input to the port P3 of the camera-side body microcomputer 2 of the camera body 1C.
- the position information to be input includes, for example, the number of pulses for driving the stepping motor (actuator).
- the communication control microcomputer 30 of the interchangeable lens 20C is provided with a command recording unit 32A.
- the command recording unit 32A (command memory) records a command for controlling the interchangeable lens 29C as will be described in detail later.
- the interchangeable lens 20C is provided with an AF / MF switch 37 and a focus ring 38 for switching between auto focus and manual focus. Signals from these switch 37 and focus ring 38 are input to the communication control microcomputer 30.
- FIG. 9 shows a position information signal indicating the actuator position information output from the lens drive circuit 32 in addition to the first drive control signal, the second drive control signal and the state of the stepping motor 36 as shown in FIG. Is also shown.
- a pulse indicating that the rotation position is at that position is output.
- the pulse is input to the body side microcomputer 2 as a position information signal.
- the body-side microcomputer knows the position (rotation angle) of the stepping motor 36 when the camera / body microcomputer 2 detects the level of the position information signal. Since the rotation angle of the stepping motor 36 is known, the lens position is also known.
- FIG. 10 is a flowchart showing the processing procedure of the camera body 1C
- FIG. 11 is a flowchart showing the processing procedure of the interchangeable lens 20C. This processing procedure switches between direct control of the lens driving circuit 32 by the camera body 1 and control via the communication control microcomputer.
- the lens information request command is transmitted from the body side microcomputer 2 of the camera body 1 to the communication control microcomputer of the interchangeable lens 20C (step 41 in FIG. 10).
- the lens information request command transmitted from the body side microcomputer 2 is received by the communication control microcomputer 30 of the interchangeable lens 20C (YES in step 61 in FIG. 11)
- the lens information is read out from the memory 31.
- the read lens information is transmitted from the interchangeable lens 20C to the body side microcomputer 2 (step 62 in FIG. 11).
- the lens information is information about the interchangeable lens 20C, and includes information such as whether the lens drive circuit 32 can be directly controlled by the body side microcomputer 2 built in the camera body 1C.
- the interchangeable lens 20C Based on the lens information transmitted from the interchangeable lens 20C, it is determined whether the interchangeable lens 20C can directly control the lens driving circuit 32 by the body side microcomputer 2 (YES in step 42 in FIG. 10). If direct control is possible (YES in step 42 in FIG. 10), a switch command request command is transmitted to the interchangeable lens 20C (step 43 in FIG. 10).
- the communication switch command is read from the command recording unit 30A.
- the read communication switching command is transmitted to the body side microcomputer 2 by the communication control microcomputer 30 (step 64 in FIG. 11).
- a communication switching command (invalid) that invalidates the input data is transmitted to the communication control microcomputer 30 (step in FIG. 10). 46).
- the communication control microcomputer 30 When the communication control microcomputer 30 receives the communication switching command (invalid) transmitted from the body side microcomputer 2 (YES in step 65 in FIG. 11), the data input to the communication control microcomputer 30 is invalidated (FIG. 11). Step 66). As a result, even if a command for directly controlling the lens driving circuit 32 by the body side microcomputer 2 is input to the communication control microcomputer 30, the communication control microcomputer 30 malfunctions, and the communication control microcomputer 30 controls the lens driving circuit 32. Can be prevented in advance.
- the body side microcomputer 2 outputs a drive control signal and directly controls the lens drive circuit 32 (step 47 in FIG. 10).
- a communication command (valid) is transmitted from the body side microcomputer 2 to the communication control microcomputer 30.
- This communication command (valid) is not invalidated by the communication control microcomputer 30, but is received (YES in step 67 in FIG. 11), and the communication control microcomputer 30 is switched so as to validate the command to be input thereafter. (FIG. 11, step 68). Since the body side microcomputer 2 and the communication control microcomputer 30 can communicate with each other, the camera body 1 is switched to the lens communication mode (step 49 in FIG. 8).
- the body side microcomputer 2 cannot directly control the interchangeable lens 20C attached to the camera body 1 (NO in step 45 in FIG. 10)
- the body side microcomputer is configured to drive the lens drive circuit 32 by the communication control microcomputer 30. 2 is transmitted to the communication control microcomputer 30 (step 51 in FIG. 10).
- Steps 41 to 49 and 51 are repeated until the camera body 1 is instructed to stop power (step 50 in FIG. 10).
- FIG. 12 shows an example of the output signals of the ports P4 and P5 and the input signal of the port P6 of the body side microcomputer 2 of the camera body 1C (which may be another camera body) shown in FIG.
- a serial clock pulse for communication is output from the port side P4 to the communication control microcomputer 30 from the body side microcomputer 2, and a lens state request command is output from the port P5.
- lens state data indicating the state of the interchangeable lens 20C is transmitted from the communication control microcomputer 30 of the interchangeable lens 20C between time t53 and time t54.
- This lens state data is input to the body side microcomputer 2 from the port P6.
- the body side microcomputer 2 knows the state of the interchangeable lens 20C, and controls the interchangeable lens in consideration of the state.
- a serial clock pulse for communication is output from the port side P4 to the communication control microcomputer 30 from the body side microcomputer 2, and a switching command (invalid) is output from the port P5. Is done.
- this switching command (invalid) is input to the communication control microcomputer 30, the communication control microcomputer 30 ignores data input other than the switching command (valid) command as described above.
- a command for controlling the interchangeable lens 20C is output from the ports P4 and P5 of the body side microcomputer 2.
- the command for controlling the interchangeable lens 20C is invalidated even if it is input to the communication control microcomputer 30 of the interchangeable lens 20C, and is input to the lens driving circuit 32.
- the lens driving motor 33 is controlled by the lens driving circuit 32.
- the serial clock pulse for communication is again output from the port side P2 to the communication control microcomputer 30 from the body side microcomputer 2, and the switching command (valid) is sent to the port P5. Is output from.
- the communication control microcomputer 30 operates according to the input data. Thereafter, communication is again performed between the body side microcomputer 2 and the communication control microcomputer 30 or the lens driving circuit 32.
- the ports P1 to P3 of the body side microcomputer 2 are not used, but these ports P1 to P3 can also be used.
- ports P4 to P6 are used as described above, and from time t56 to time t57, data output from port P4 is output from port P1 and output from port P5.
- data input from port P3 will be used.
- ports P1 to P3 are used again.
- FIG. 13 is a modification of the process shown in FIG.
- a switching command (invalid) input to the communication control microcomputer 30 between time t61 and time t62 corresponding to the above-described time t53 to time t54 is input to the lens driving circuit 32, and the switching command ( Even if the lens driving circuit 32 is operated due to invalidity, the lens position is prevented from changing.
- a clock pulse output from the port P4 and a switching command (invalid) output from the port P5 are input to the lens driving circuit 32, and the lens driving circuit 32 is caused by these clock pulses and the like.
- the lens drive motor 33 rotates forward by 3 step positions.
- a clock pulse output from the port P4 and a switching command (invalid) output from the port P5 are input to the lens driving circuit 32.
- the lens drive motor 33 reverses by 3 step positions.
- a clock pulse output from the port P4 and a switching command (invalid) output from the port P5 are input to the lens driving circuit 32, and the lens driving circuit is generated by these clock pulses.
- the lens drive motor 33 rotates forward by one step position.
- a clock pulse output from the port P4 and a switching command (invalid) output from the port P5 are input to the lens driving circuit 32.
- the lens drive motor 33 rotates forward by one step position. Even if the lens driving circuit 32 malfunctions in accordance with the switching command (invalid) input to the communication control microcomputer 30, the lens position does not change.
- the lens driving circuit 32 is controlled based on the output data from the body side microcomputer 2 between time t67 and time t68.
- a switching command (valid) given to the communication control microcomputer 30 between time t69 and time t70 is also input to the lens driving circuit 32 in the same manner as described above, and lens driving is performed based on the switching command (valid).
- a clock pulse and a switching command (valid) output from the port P1 and the port P2 of the body side microcomputer 2 are defined so that the lens position does not change even when the circuit 32 operates.
- FIG. 14 shows a further modification of the example shown in FIG.
- the clock pulse output from the body side microcomputer 2 between time t81 and time t82 corresponding to time t51 to time t52 in FIG. 12 has a high frequency, and such a high frequency clock pulse is the lens. Even if it is input to the drive circuit 32, the lens drive circuit 32 cannot be recognized (however, the lens drive circuit 32 may recognize and malfunction). For this reason, as described with reference to FIG. 13, the lens position cannot be controlled so as not to change even if the lens driving circuit 32 operates based on the lens switching command (invalid or valid).
- the clock pulse from time t61 to time t65 and from time 69 to time t70 giving the switching command (invalid or valid) is switched to a frequency that can be recognized by the lens driving circuit 32. . Thereby, as described above, even if a switching command (invalid or valid) is input to the lens driving circuit 32 and the lens driving circuit 32 operates, the lens position does not change.
- FIG. 15 and 16 correspond to FIG. 10 and are flowcharts showing the processing procedure of the camera body 1.
- a lens information request command is transmitted from the body side microcomputer 2 (step 81), and if the interchangeable lens 20C can be directly controlled by the body side microcomputer 2 (YES in step 82), a communication switching command request command Is transmitted (step 83).
- a switching command is transmitted from the interchangeable lens, and the switching command is received by the body side microcomputer 2.
- the communication control microcomputer 30 is operated by a command given from the body side microcomputer 2 to the communication control microcomputer 30, and the lens control circuit 30 is controlled by the communication control microcomputer 30 (step 93). If the interchangeable lens can be directly controlled (YES in step 85), it is confirmed whether the lens driving circuit 32 can recognize the clock pulse (step 86). If the lens driving circuit 32 cannot recognize the clock pulse (NO in step 86), the period is set so that the lens driving circuit 32 can recognize the clock pulse (step 87). If the lens driving circuit 32 can recognize the clock pulse (YES in step 86), the process of step 87 is skipped.
- a switching command (invalid) is transmitted to the interchangeable lens 20C (step 88), and the lens driving circuit 30 is directly controlled by the body side microcomputer 2 (step 89).
- a switching command (valid) is transmitted, and communication between the body side microcomputer 2 and the communication control microcomputer 30 becomes possible.
- the power stop instruction is given (step 92)
- the processing from step 81 is repeated.
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Abstract
Description
2 ボディ側マイコン
20 交換レンズ
30 通信制御マイコン
32 レンズ駆動回路
33 レンズ駆動アクチュエータ
Claims (12)
- カメラ・ボディと,このカメラ・ボディに着脱自在に装着される交換レンズとを備えたカメラ装置において,
上記カメラ・ボディが,
カメラ・ボディ通信制御装置,
上記交換レンズが装着されることにより,上記交換レンズに形成されている通信端子と電気的に接続されるカメラ・ボディ通信端子,および
上記カメラ・ボディ通信制御装置と上記カメラ・ボディ通信端子との間に接続されているカメラ・ボディ信号ラインを備え,
上記交換レンズが,
交換レンズ通信制御装置,
レンズ駆動モータを駆動するレンズ駆動回路,
上記カメラ・ボディに装着されることにより,上記カメラ・ボディの上記カメラ・ボディ通信端子と電気的に接続される交換レンズ通信端子,
上記交換レンズ通信制御装置と上記交換レンズ通信端子との間に接続されている交換レンズ・データ通信ライン,および
上記レンズ駆動回路と上記交換レンズ通信端子との間に接続されている交換レンズ駆動信号ラインを備え
上記カメラ・ボディ通信制御装置は,
交換レンズ通信指令に応じて上記交換レンズとデータ通信を行うデータ通信コマンドを出力し,交換レンズ駆動指令に応じて交換レンズ駆動信号を出力するものである,
カメラ装置。 - 上記カメラ・ボディ信号ラインは,
上記カメラ・ボディ通信制御装置と上記カメラ・ボディ通信端子との間に接続され,上記交換レンズとデータ通信を行うカメラ・ボディ通信ライン,および
上記カメラ・ボディ通信制御装置と上記カメラ・ボディ通信端子との間に接続され,上記交換レンズを駆動する駆動信号を送出するカメラ・ボディ駆動信号ラインを備え,
上記カメラ・ボディ通信制御装置は,
交換レンズ通信指令に応じて上記交換レンズとデータ通信を行うデータ通信コマンドを上記カメラ・ボディ・データ通信ラインに送出し,交換レンズ駆動指令に応じて交換レンズ駆動信号を上記カメラ・ボディ駆動信号ラインに送出するものである,
請求項1に記載のカメラ装置。 - 上記カメラ・ボディ通信端子,上記カメラ・ボディ・データ通信ライン,上記カメラ・ボディ駆動信号ライン,上記交換レンズ通信端子,上記交換レンズ・データ通信ラインおよび上記交換レンズ駆動信号ラインが,それぞれ対応するように複数あり,
上記カメラ・ボディ通信制御装置は,
上記カメラ・ボディ駆動信号ラインに,レンズ駆動モータを駆動する駆動力制御信号およびレンズ駆動モータのレンズ駆動方向を制御する駆動方向制御信号を出力するものである,
請求項2に記載のカメラ装置。 - 上記カメラ・ボディ通信制御装置は,
上記カメラ・ボディ駆動信号ラインに,レンズ駆動モータを駆動する駆動力制御信号,レンズ駆動モータのレンズ駆動方向を制御する駆動方向制御信号およびレンズ駆動モータの駆動速度を出力するものである,
請求項3に記載のカメラ装置。 - 上記カメラ・ボディ通信制御装置は,
上記交換レンズの上記レンズ駆動回路から出力される,レンズ駆動モータの位置情報を表わすデータを,カメラ・ボディ駆動信号ラインを介して入力するものである,
請求項3または4に記載のカメラ装置。 - 上記交換レンズは,
カメラ・ボディ通信制御装置による上記レンズ駆動回路の制御と交換レンズ通信制御装置による上記レンズ駆動回路の制御とを切り替える切替コマンドを記憶する切替コマンド・メモリをさらに備え,
上記カメラ・ボディは,
上記切替コマンド・メモリに記憶されている切替コマンドを読み取る切替コマンド読取手段,および
上記切替コマンド読取手段によって読み取られた切替コマンドを上記交換レンズ通信制御装置に送信する切替コマンド送信手段をさらに備え,
上記交換レンズ通信制御装置は,
上記カメラ・ボディの上記切替コマンド送信手段から送信された切替コマンドにもとづいて,カメラ・ボディ通信制御装置による上記レンズ駆動回路の制御と交換レンズ通信制御装置による上記レンズ駆動回路の制御とを切り替えるものである,
請求項1から5のうち,いずれか一項に記載のカメラ装置。 - 上記カメラ・ボディ通信制御装置は,
上記交換レンズの状態を問い合わせる問い合わせコマンドを送信するものであり,
上記問い合わせコマンドに応答して上記交換レンズから送信される,交換レンズの状態を示すデータを受信したことに応じて交換レンズ駆動信号を出力するものである,
請求項1から6のうち,いずれか一項に記載のカメラ装置。 - 上記切替コマンドは,
上記切替コマンドにもとづいてレンズ駆動モータが駆動した場合に,レンズ駆動モータの駆動前後においてレンズ位置が変化しないものである,
請求項6または7に記載のカメラ装置。 - 上記切替コマンドは,
上記レンズ駆動回路が認識可能な周波数をもつものである,
請求項8に記載のカメラ装置。 - カメラ・ボディ通信制御装置,
交換レンズが装着されることにより,上記交換レンズに形成されている通信端子と電気的に接続されるカメラ・ボディ通信端子,
上記カメラ・ボディ通信制御装置と上記カメラ・ボディ通信端子との間に接続され,上記交換レンズとデータ通信を行うカメラ・ボディ・データ通信ライン,および
上記カメラ・ボディ通信制御装置と上記カメラ・ボディ通信端子との間に接続され,上記交換レンズを駆動する駆動信号を通信するカメラ・ボディ駆動信号ラインを備え,
上記カメラ・ボディ通信制御装置は,
交換レンズ駆動指令に応じて,上記カメラ・ボディ駆動信号ラインを通して交換レンズ駆動信号を出力するものである,
カメラ装置。 - 交換レンズ通信制御装置,
レンズ駆動モータを駆動するレンズ駆動回路,
カメラ・ボディに装着されることにより,上記カメラ・ボディの上記カメラ・ボディ通信端子と電気的に接続される交換レンズ通信端子,
上記交換レンズ通信制御装置と上記交換レンズ通信端子との間に接続され,上記カメラ・ボディとデータ通信を行う交換レンズ・データ通信ライン,および
上記レンズ駆動回路と上記交換レンズ通信端子との間に接続され,上記交換レンズを駆動する駆動信号を通信する交換レンズ駆動信号ライン,
を備えた交換レンズ。 - カメラ・ボディ通信制御装置,および交換レンズが装着されることにより,上記交換レンズに形成されている通信端子と電気的に接続されるカメラ・ボディ通信端子を備えたカメラ・ボディにおいて,
カメラ・ボディ・データ通信ラインが,上記カメラ・ボディ通信制御装置と上記カメラ・ボディ通信端子との間に接続され,上記交換レンズとデータ通信を行い,
カメラ・ボディ駆動信号ラインが,上記カメラ・ボディ通信制御装置と上記カメラ・ボディ通信端子との間に接続され,上記交換レンズを駆動する駆動信号を通信し,
上記カメラ・ボディ通信制御装置が,交換レンズ駆動指令に応じて,上記カメラ・ボディ駆動信号ラインを通して交換レンズ駆動信号を出力する,
カメラ装置の動作制御方法。
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JP2015506558A JP5859708B2 (ja) | 2013-03-19 | 2013-12-18 | カメラ装置,カメラ・ボディ,交換レンズおよびカメラ・ボディの動作制御方法 |
US14/754,135 US9606422B2 (en) | 2013-03-19 | 2015-06-29 | Camera apparatus, camera body, interchangeable lens, and method of controlling operation of camera body |
US15/433,096 US10036872B2 (en) | 2013-03-19 | 2017-02-15 | Camera apparatus, camera body, interchangeable lens, and method of controlling operation of camera body |
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RU2714847C2 (ru) | 2017-05-31 | 2020-02-19 | Кэнон Кабусики Кайся | Устройство захвата изображения и аксессуары |
TWI776256B (zh) | 2017-05-31 | 2022-09-01 | 日商佳能股份有限公司 | 安裝件設備和配件 |
CN113109982A (zh) | 2017-05-31 | 2021-07-13 | 佳能株式会社 | 镜头设备、摄像设备和中间配件 |
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CN100541315C (zh) * | 2006-06-05 | 2009-09-16 | 索尼株式会社 | 成像设备和可互换式镜头 |
JP4315206B2 (ja) * | 2006-06-05 | 2009-08-19 | ソニー株式会社 | 撮像システムおよび撮像装置 |
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JP2010237514A (ja) * | 2009-03-31 | 2010-10-21 | Nikon Corp | 撮像装置および撮影レンズ |
JP5618582B2 (ja) * | 2010-03-17 | 2014-11-05 | キヤノン株式会社 | カメラ本体、調整用工具、交換レンズ、アクセサリ、カメラシステム、通信システム、及びアクセサリの制御方法 |
JP5762011B2 (ja) | 2011-01-21 | 2015-08-12 | キヤノン株式会社 | 撮像装置及び交換レンズ及び撮像装置システム |
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JPH02296207A (ja) * | 1989-05-10 | 1990-12-06 | Sanyo Electric Co Ltd | オートフォーカスカメラ |
JPH1115035A (ja) * | 1997-06-27 | 1999-01-22 | Nikon Corp | カメラシステム、カメラボディ及び交換レンズ |
JP2005292659A (ja) * | 2004-04-02 | 2005-10-20 | Matsushita Electric Ind Co Ltd | 撮像装置及びこれに用いるレンズ鏡筒とカメラ本体 |
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US9606422B2 (en) | 2017-03-28 |
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