JP2008010939A - Lens unit, camera main body, camera system, and method and program of operating lens unit or camera main body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology of carrying out proper settings in response to a combination of a lens unit and a camera main body. <P>SOLUTION: When the camera main body 14 normally receives setting information from the lens unit 12, the camera main body 14 acquires the setting information to a RAM 222 and executes settings on the basis of the setting information. Further, even if the camera main body 14 cannot normally receive the setting information from the lens unit 12, when the camera main body 14 can normally receive a lens ID and setting information corresponding to the lens ID has only to be stored in a flash ROM 206, the camera main body 14 can carry out the settings on the basis of the setting information. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an operation setting of a camera system including a replaceable lens unit and a camera body.

In recent years, a camera system including a lens unit including an image sensor and an image processing system and a camera body on which the lens unit can be freely mounted has been developed. For example, according to Patent Document 1, when a plug-in unit in which an image sensor and an imaging optical system are integrated is attached to a camera body, information on the plug-in unit is transmitted to the camera body side, and the plug-in unit There has been proposed a camera system capable of performing imaging with an imaging optical system included in.
JP 2005-278021 A

  When a camera system is realized in which the above-mentioned plug-in unit is simply attached to the camera body and the taking lens is changed, handling of the camera system becomes very simple, and users who do not have specialized knowledge can use it. Even in such a case, it is possible to easily replace the photographic lens.

  By the way, normally, when the setting related to the operation of the plug-in unit is manually changed according to the user's preference, the setting information is stored in the plug-in unit. If the plug-in unit is attached to the main unit again at another time, the setting information is sent from the plug-in unit to the main unit as part of the initial operation, and the settings corresponding to this information are also sent to the main unit and are always up-to-date. Designed to work with settings.

  However, since the setting information changed last time is not always sent correctly to the main unit when another opportunity is installed, if an error occurs in communication between the main unit and the unit, the previous setting changes are wasted. And then you are forced to start over.

  The present invention has been made in view of such a problem, and an object thereof is to perform an appropriate setting according to a combination of a lens unit and a camera body.

  The present invention provides a connection unit connected to an interchangeable lens unit having an imaging system that acquires image data indicating a subject image received through an imaging lens, and image data and other data from the imaging system via the connection unit. A communication unit that transmits and receives data, a control unit that controls acquisition of image data and other operations by the imaging system by transmitting control data to the imaging system via the communication unit, and reception of the communication unit according to the control of the control unit The present invention relates to a camera body including a recording unit for recording the image data.

  The camera body includes a setting change unit that changes the setting information of the lens unit, and a setting information storage unit that stores the setting information changed by the setting change unit in a nonvolatile storage medium. The setting information changed by the unit is transmitted to the lens unit.

  According to the present invention, when the setting information of the lens unit is changed on the camera body side, the setting information is stored in the nonvolatile storage medium on the camera body side and transmitted to the lens unit.

When the same lens unit is reconnected to the camera body, even if the camera body cannot receive the changed setting information from the lens unit, the changed setting information stored on the camera body side is used. Therefore, it is not necessary to change the setting of the lens unit again.

  The camera body further includes an error detection unit that detects whether or not an error has occurred during transmission of the setting information from the communication unit, and the communication unit stores the setting information when the error detection unit detects an error. It may be repeatedly transmitted up to the number of times.

  This ensures that the same setting information is stored in the camera body and the lens unit.

  The camera body according to the present invention includes a setting information storage unit that stores lens unit setting information in a non-volatile storage medium, a connection detection unit that detects that the lens unit is connected to the connection unit, and a communication unit. An error detection unit that detects whether an error has occurred during data transmission / reception, and the communication unit receives the lens unit setting information in response to the connection detection unit detecting the connection of the lens unit. The control unit controls the operation of the imaging system according to the setting information stored in the setting information storage unit in response to the error detecting unit detecting an error during the reception of the setting information by the communication unit, and detects an error. The operation of the imaging system is controlled according to the setting information received by the communication unit in response to the fact that the unit has not detected an error during reception of the setting information by the communication unit.

  That is, when an error occurs while the camera body is receiving setting information from the lens unit, the setting information on the camera body side is used, so that the lens unit can be controlled even if the setting information cannot be received.

  The control unit includes the date information included in the setting information received by the communication unit and the setting information stored in the setting information storage unit when the error detection unit does not detect an error during reception of the setting information by the communication unit. The operation of the imaging system may be controlled in accordance with setting information including the newer date and time information.

  In this way, the operation of the imaging system can be controlled with the newer setting information.

  The control unit, when the error detection unit does not detect an error during reception of the setting information by the communication unit, identification information and setting information storage unit of the camera body connected in the past included in the setting information received by the communication unit If the two match, the operation of the imaging system is controlled according to the setting information received by the communication unit, and if the two do not match, the setting stored in the setting storage unit The operation of the imaging system may be controlled according to the information.

  In this way, even if the setting information of a certain lens unit is changed in another camera body, the setting information before the lens unit stored in the camera body can be used.

  The present invention relates to a connection unit connected to a camera body, a communication unit that transmits and receives control data and other data via the connection unit, and a subject image received through an imaging lens in accordance with control data received by the communication unit. An interchangeable lens unit comprising an imaging system for acquiring image data to be shown, wherein the setting information storage unit stores the setting information of each camera body in association with the identification information of each camera body, and the camera in the connection unit The present invention relates to a lens unit that includes a connection detection unit that detects that a main body is connected.

  In this lens unit, the communication unit receives identification information of the camera body from the camera body connected to the connection unit in response to the connection detection unit detecting the connection of the camera body, and the control unit stores setting information. The setting information associated with the camera body identification information received by the communication unit is read from the setting information stored in the unit, and the communication unit transmits the setting information read by the control unit to the camera body.

  In this way, setting information corresponding to the currently connected camera body can be transmitted from the lens unit to the camera body, and setting information changed in one camera body is not transmitted to another camera body. Appropriate settings can be made according to the combination of the camera body and lens unit.

  The present invention also provides a camera system including a lens unit interchangeable with the camera body, a method and a program for operating an arithmetic unit (CPU, MCU, etc.) as a control unit provided in the camera body or lens unit. Including.

  According to the present invention, when the same lens unit is connected again to the camera body, even if the camera body cannot receive the changed setting information from the lens unit, the changed stored in the camera body side Since setting information only needs to be used, it is not necessary to redo the setting.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

<First Embodiment>
FIG. 1 shows an external configuration of a camera system. As shown in the figure, the camera system 10 includes a lens unit 12 and a camera body 14.

  The lens unit 12 is formed in a cylindrical shape, and includes a lens mount 12A at the base end thereof. On the other hand, the camera main body 14 is formed in a box shape, and includes a main body mount 14 </ b> A substantially at the front center thereof. The lens unit 12 is detachably attached to the camera body 14 by attaching the lens mount 12A to the body mount 14A of the camera body 14.

  The lens mount 12A and the main body mount 14A are provided with a lens mount contact 12a and a main body mount contact 14a, respectively (only the main body mount contact 14a is shown in FIG. 1), and when the lens mount 12A is attached to the main body mount 14A. The contact points of each other come into contact with each other.

  The main body mount 14A is provided with a lens detection terminal (not shown), and the lens detection terminal can detect that the lens mount 12A is attached to the main body mount 14A.

  As will be described later, the lens unit 12 incorporates an image sensor and the like.

  A strobe 18 and a microphone 19 are provided on the front surface of the camera body 14, and a release button 20, a power switch 22, a mode dial 24, and the like are provided on the top surface.

  The release button 20 functions as a button for inputting a shooting instruction, and is configured by a so-called “half-press” and “full-press” two-stage system. In the camera system 10, AE (Automatic Exposure) and AF (Auto Focus) function when the release button 20 is half-pressed, and shooting is performed when the release button 20 is fully pressed.

  The power switch 22 is composed of a slide-type switch, and the power of the camera system 10 is turned on / off by a slide operation of the power switch 22.

  The mode dial 24 is composed of a rotary dial and functions as means for switching the mode of the camera system 10. The camera system 10 is switched between the “shooting mode” and the “reproduction mode” by rotating the mode dial 24.

  FIG. 2 is a block diagram showing an electrical configuration of the camera system 10. As shown in the figure, the lens unit 12 includes a photographing optical system 100, a photographing optical system driving / shooting optical system control unit 102, an image pickup device (CCD) 108, an analog signal processing unit 110, an A / D converter 112, a digital unit. Signal processing unit 113, integration circuit 114, timing generator (TG) 116, lens CPU 118, lens system memory 120 including ROM and RAM, lens nonvolatile memory 122, UART (low speed serial driver) 140 and high speed serial driver as lens communication unit 142, a power control unit 126, a DC / DC converter 128, a lens mount contact 12a, and the like.

  On the other hand, the camera body 14 includes a body CPU 200, an operation unit (mode dial 24, etc.) 202, a work memory RAM 204, a body flash ROM 206, a body system memory ROM 207, a compression / decompression processing unit 209, and a body communication unit UART (low speed). Serial driver) 240 and high-speed serial driver 242, card interface (I / F) 216, memory card slot 215, memory card 220, LCD controller 226, LCD monitor 26, strobe controller 234, strobe 18, power supply controller 236, A battery 238, a DC / DC converter 239, a main body mount contact 14a, and the like are included.

  The overall operation of the digital camera is centrally controlled by the main body CPU 200, and the main body CPU 200 controls each part of the camera system 10 according to a predetermined control program based on an input from the operation unit 202. A ROM 207 which is a main body system memory stores a control program executed by the main body CPU 200 and various data necessary for control. The main body CPU 200 controls each part of the digital camera according to the control program stored in the ROM 207 while using the RAM 204 as a work area.

  The flash ROM 206 stores a camera ID, which is information unique to the camera.

  The lens CPU 118 performs overall control of the operation of the lens unit 12 in accordance with a command from the main body CPU 200. In the ROM of the lens system memory 120, a control program executed by the lens CPU 118 and various data necessary for control are recorded. The lens CPU 118 controls each part of the lens unit 12 according to a control program stored in the ROM of the lens system memory 120 while using the RAM of the lens system memory 120 as a work area.

  The image sensor (CCD) 108 is composed of, for example, a primary color CCD, and the photographing optical system 100 converts an optical image of a subject formed on the light receiving surface into an electric signal.

  The analog signal processing unit 110 includes a sampling hold circuit, a color separation circuit, a gain adjustment circuit, and the like, and performs correlated double sampling (CDS) processing, color separation processing, pre-white balance processing, and the like on the image signal output from the CCD 108. The required analog signal processing is performed.

  The A / D converter 112 converts the analog image signal output from the analog signal processing unit 110 into a digital image signal and outputs the digital image signal.

  The digital signal processing unit 113 includes a digital signal processor (DSP) including a luminance / color difference signal generation circuit, a gamma correction circuit, a sharpness correction circuit, a contrast correction circuit, a white balance correction circuit, a compression / decompression processing circuit, and the like. The obtained image signal is subjected to a required signal processing to generate a YUV signal composed of a luminance signal (Y signal) and a color difference signal (Cr, Cb signal). In addition, the YUV signal is compressed to generate compressed image data, and the compressed image data is expanded to generate a YUV signal.

  The integrating circuit 114 obtains an image signal after A / D conversion, and calculates a physical quantity necessary for AE / AF control. That is, an integrated value of R, G, and B image signals in one frame is calculated as a physical quantity necessary for AE control. The lens CPU 118 calculates the brightness of the subject (subject brightness) based on the integrated value obtained from the integrating circuit 114, and determines the aperture value and shutter speed from a predetermined program diagram. Further, as a physical quantity necessary for AF control, an integrated value (focus evaluation value) of high frequency components of the G signal in a predetermined AF area is calculated. The lens CPU 118 moves the focus lens to a position where the focus evaluation value is maximized (so-called contrast AF).

  The timing generator (TG) 116 provides timing signals to the CCD 108, the analog signal processing unit 110, the A / D converter 112, the digital signal processing unit 113, and the integration circuit 114, and each unit is synchronized with the timing signal provided from the TG. Has been taken.

  The UART 140 transmits and receives control signals (command signals) to and from the UART 240 on the camera body side connected via the lens mount contact 12a and the body mount contact 14a under the control of the lens CPU 118. On the other hand, under the control of the main body CPU 200, the main body side UART 240 transmits and receives control signals (command signals) to and from the lens unit side UART 140 connected via the lens mount contact 12a and the main body mount contact 14a.

  The high-speed serial driver 142 transmits an image file with the high-speed serial driver 242 on the camera body side connected via the lens mount contact 12a and the body mount contact 14a under the control of the lens CPU 118. On the other hand, the high-speed serial driver 242 on the main body side receives an image file with the high-speed serial driver 242 on the lens unit side connected via the lens mount contact 12a and the main body mount contact 14a under the control of the main body CPU 200. Do.

  The power controller 126 controls the DC / DC converter 128 under the control of the lens CPU 118 and is supplied from the DC / DC converter 239 on the camera body 14 side via the lens mount contact 12a and the body mount contact 14a. Electric power is supplied to each part of the lens unit 12.

  When displaying a through image on the monitor 26, YUV signals continuously generated by the digital signal processing unit 113 are sequentially added to the RAM 222 via the high-speed serial drivers 142 and 242. The LCD control unit 226 converts the YUV signal applied to the RAM 222 into a display signal format and sequentially outputs it to the monitor 26. As a result, a through image is displayed on the monitor 26, and photographing can be performed while using the monitor 26 as a viewfinder.

  The OSD unit 224 includes a character generator, and outputs characters, symbols, and the like to be displayed on the monitor 26 to the LCD control unit 226 under the control of the main body CPU 200. The LCD control unit 226 superimposes characters and the like output from the OSD unit 224 on the image and outputs them to the monitor 26.

  When recording an image, the digital signal processing unit 113 compresses the YUV signal in a predetermined compression format (for example, JPEG). The compressed image data is converted into an image file to which necessary attached information such as shooting date and time, shooting conditions (aperture value, shutter speed, sensitivity, etc.) is added, and then the memory card slot 218 via the card I / F 216. Stored in the memory card 220 attached to the card. At this time, the image file is stored in the storage area of the memory card 220 according to a predetermined rule.

  The microphone 19 outputs an audio signal based on the collected audio and sends it to the matrix circuit 207. In the matrix circuit 207, an L (Left) signal and an R (Right) signal of the audio signal are generated. Each of the L signal and the R signal is converted into a digital audio signal by the audio recording processing circuit 211 and recorded in a predetermined file format (such as MP3) in synchronization with the moving image or as a single audio file.

  The timer 208 measures the time based on a command from the main body CPU 200, and the calendar clock 210 measures the current date and time based on the command from the main body CPU 200.

  The strobe controller 234 controls the light emission of the strobe 18 under the control of the main body CPU 200.

  The power control unit 236 controls the DC / DC converter 239 under the control of the main body CPU 200, and supplies the power supplied from the battery 238 to each unit of the camera main body 14 and the lens unit 12.

  The main body CPU 200 sends a control signal to the switch / LED 232 via the I / O 231 to control the light emission pattern, light emission timing, light emission time, and light emission amount of the LED.

  The lens unit 12 is attached to the camera body 14 and the power of the camera system 10 is turned on by the power switch 22. At this time, if the camera mode is not set to the shooting mode, the mode dial 24 is used to set the shooting mode.

  In this state, when the shooting lens is pointed at the subject and the release button 20 is pressed halfway, an S1 ON signal is output from the operation unit 202 to the main body CPU 200, and AE / AF processing is executed. That is, the main subject is focused and exposure is determined.

  Thereafter, when the release button 20 is fully pressed, an S2 ON signal is output from the operation unit 202 to the main body CPU 200, and a photographing process is executed. That is, the CCD 108 is exposed with the determined exposure, and an image signal obtained by the exposure is sent to the digital signal processing unit 113 via the analog signal processing unit 110 and the A / D converter 112. The digital signal processing unit 113 performs necessary signal processing and converts it into a YUV signal. The generated YUV signal is further subjected to compression processing by the digital signal processing unit 113 to be compressed image data, and is then converted into a memory card via the high-speed serial drivers 142 and 242 as an image file to which necessary attached information is added. 220.

  The image file recorded in the memory card 220 in this way is read from the memory card 220 and reproduced and displayed on the monitor 26 by setting the camera mode to the reproduction mode with the mode dial 24.

  That is, when the mode dial 24 is set to the playback mode, the compressed image data of the image file recorded last is read from the memory card 220 and added to the compression / decompression processing unit 209. The compression / decompression processing unit 209 performs a necessary decompression process on the input compressed image data to generate uncompressed YUV data. The generated YUV data is added to the RAM 222, converted into a display signal format by the LCD control unit 226, and output to the monitor 26. As a result, the captured image is reproduced and displayed on the monitor 26.

  When the frame advance operation is performed, the next image is read from the memory card 220. When the frame return operation is performed, the previous image is read from the memory card 220 and displayed on the monitor 26. Is done.

  When an image file obtained by shooting is recorded in the memory card 220, it is stored in the storage area of the memory card 220 according to a predetermined rule. In the above, the JPEG format image file compressed by the digital signal processing unit 113 is created, but an uncompressed RAW format file may be created.

  Next, the flow of the setting information writing process executed by the camera system 10 will be described with reference to the flowchart of FIG. Of these processes, A1 to A9 are executed by the main body CPU 200 in response to a change in the setting information of the lens unit 12 (including information related to the shooting mode, white balance, etc.) input from the operation unit 202 of the camera main body 14. . The lens CPU 118 executes B1 to B4.

  In A1, by comparing the lens ID notified from the lens unit 12 at the time of mounting with the lens ID included in the setting information recorded in the flash ROM 206, is the lens unit 12 on which the setting information has been registered currently mounted? Judge whether or not. If it is determined that the registered lens unit 12 is set, the process proceeds to A2. If it is determined that the unregistered lens unit 12 is set, the process proceeds to A3.

  In A2, the setting information in the flash ROM 206 is updated to the setting information input from the operation unit 202.

  In A3, it is determined whether or not there is a free area for storing the setting information in the flash ROM 206. If a free area exists, the process proceeds to A4. If not, the process proceeds to A5.

  In A4, the setting information is written in the free area of the flash ROM 206.

  In A5, the newly input setting information is overwritten on the setting information with the old storage date and time.

  In A6, the setting information input to the lens unit 12 is transmitted via the high-speed serial drivers 142 and 242 and the mount contacts 12a and 14a, and the setting information is requested to be written in the nonvolatile memory 122 of the lens unit 12. Send a write command. The lens unit 12 performs the process B1 described later in response to receiving the write command.

  In A7, a communication error is monitored until transmission of the setting information and the write command is completed, and if an error is detected, the process proceeds to A8. If no error is detected, this process ends. An example of an error detection method is CRC (Cyclical (Cyclic) Redundancy Check) commonly used in serial data transmission, but other methods may be used.

  In A8, the process returns to A6 in response to the error detection, and the setting information and command are retransmitted. Further, the number of times of retransmission is counted, and if the number of times reaches a predetermined number (for example, 5 times) and transmission is not completed normally, the process proceeds to A9. If retransmission is completed normally within a predetermined number of times, this process is terminated.

  In A9, a warning screen indicating that the setting information cannot be normally transmitted from the camera body 14 to the lens unit 12 due to the occurrence of an error is displayed on the LCD 26, and the process ends.

  In B1, the data constituting the setting information received by the high-speed serial driver 142 is sequentially stored in the system memory (RAM) 120 in response to receiving the write command and the setting information. At the same time, an error during communication is monitored, and if no error is detected, the process proceeds to B2. If an error is detected, the process proceeds to B4.

  In B <b> 2, the setting information stored in the RAM 120 is written in the nonvolatile memory 122 in association with the main body ID that is identification information notified from the camera main body 14.

  In B3, a notification that the setting information has been normally written is transmitted to the camera body 14. The camera body 14 may display a message on the LCD 26 that the setting information has been normally written in the lens unit 12 in response to receiving this notification.

  In B4, a notification that the setting information has not been normally written is transmitted to the camera body 14. The camera body 14 proceeds to A9 in response to receiving this notification and displays a warning screen.

  According to the above processing, the setting information changed from the camera body 14 is stored in the flash ROM 206 of the camera body 14 and also stored in the nonvolatile memory 122 of the lens unit 12 unless a communication error is detected. . That is, in the camera system, the setting information is stored not only in the lens unit 12 but also in the camera body 14, and the setting information is ensured to have the same reliability by detecting errors during communication.

<Second Embodiment>
Next, the flow of setting processing executed by the camera system 10 will be described with reference to the flowchart of FIG. Of these processes, the main body CPU 200 executes A11 to A20. The lens CPU 118 executes B11 to B12.

  In A11, power supply from the battery 238 to each part of the camera body 14 and the lens unit 12 is started in response to an ON operation of the power switch 22.

  In A12, the mounting of the lens unit 12 is detected.

  In A13, the lens unit 12 is requested to transmit a lens ID (identification information of the lens unit 12). Although not shown, the lens unit 12 reads the lens ID from the nonvolatile memory 122 and transmits it to the camera body 14 in response to a request for the lens ID.

  In A14, the lens ID received from the lens unit 12 is acquired in the RAM 222.

  In A15, the lens unit 12 is requested to transmit setting information. The lens unit 12 reads the setting information from the nonvolatile memory 122 and transmits it to the camera body 14 in response to receiving the setting information transmission request.

  In A16, a communication error is monitored until reception of setting information from the lens unit 12 is completed. If an error is detected, the process proceeds to A17. If no error is detected, the process proceeds to A22.

  In A17, the process returns to A15 in response to the error detection, and requests transmission of setting information again only for a predetermined number of times (for example, 5 times). Further, the number of transmission requests is counted, and if reception is not completed normally even if this number reaches a predetermined number (for example, 5 times), the process proceeds to A18.

  In A18, it is determined whether or not the registered lens unit 12 is mounted by comparing the lens ID notified from the lens unit 12 with the lens ID recorded in the flash ROM 206. If the registered lens unit 12 is attached, the process proceeds to A19. If an unregistered lens unit 12 is attached, the process proceeds to A21.

  In A19, the setting information corresponding to the notified lens ID is read out to the RAM 204 among the setting information stored in the flash ROM 206.

  In A20, settings relating to the camera body 14 are performed based on the setting information read to the RAM 204.

  In A21, the initial setting information stored in advance in the ROM 206 is read out to the RAM 204, and settings relating to the camera body 14 are performed based on the read initial setting information.

  In A22, the setting information received from the lens unit 12 is acquired in the RAM 222.

  In A23, settings relating to the camera body 14 are performed based on the setting information stored in the RAM 222.

  As described above, when the camera body 14 normally receives from the lens unit 12, the camera body 14 acquires the setting information in the RAM 222 and performs setting based on the setting information. Even if the setting information cannot be normally received from the lens unit 12, if the lens ID can be normally received and the setting information corresponding to the lens ID is stored in the flash ROM 206, the setting information is stored. Settings can be made based on Therefore, even if the setting information cannot be normally received from the lens unit 12, it is possible to perform appropriate settings on the camera body according to the combination of the lens unit 12 and the camera body 14.

<Third Embodiment>
If the setting information stored in the camera body 14 is newer than the setting information received from the lens unit 12, it can be used with priority.

  Hereinafter, the flow of setting processing executed by the camera system 10 will be described with reference to the flowchart of FIG. Of these processes, the main body CPU 200 executes A11 to A36.

  A11 to A22 are the same as in the second embodiment. However, after executing A22, the process proceeds to A32.

  In A32, the same determination as in A18 is performed, and the process proceeds to A33 when the registered lens unit 12 is mounted, and to A36 when the unregistered lens unit 12 is mounted.

  In A33, the setting information corresponding to the notified lens ID is read out to the RAM 204 among the setting information stored in the flash ROM 206.

  In A34, the date / time information (information indicating the creation date / time, registration date / time, update date / time, etc. of the setting information) included in the setting information received from the lens unit 12 is compared with the date / time information of the setting information acquired from the flash ROM 206. Determine whether the setting information is new. If it is determined that the setting information acquired from the flash ROM 206 is newer, the process proceeds to S35. If it is determined that the setting information received from the lens unit 12 is newer, the process proceeds to A36.

  In A35, the camera body 14 is set based on the setting information from the flash ROM 206 stored in the RAM 204.

  In A36, the camera body 14 is set based on the setting information stored in the RAM 222.

  In this way, shooting can be performed using the latest setting information as much as possible.

<Fourth embodiment>
A lens unit 12 owned by a user is lent to another person, and after the setting information of the lens unit 12 is changed by the camera body 14 owned by the other person, the lens unit 12 is returned to the user and attached to the camera body 14 of the user again. Suppose. In this case, according to the processing of the second to third embodiments, when the own camera body 14 normally receives the setting information changed by the other person, it is used as it is. It is inconvenient for users who do not. In this embodiment, such inconvenience is avoided.

  Hereinafter, the flow of setting processing executed by the camera system 10 will be described with reference to the flowchart of FIG. Of these processes, the main body CPU 200 executes A11 to A36.

  A11 to A22 are the same as in the second embodiment. However, after executing A22, the process proceeds to A50.

  In A50, the mounting destination ID included in the setting information received from the lens unit 12 (the main body ID previously received from the camera main body 14 to which the lens unit 12 is mounted) is compared with the main body ID acquired from the flash ROM 206. , It is determined whether or not they match. If it is determined that they match, the process proceeds to A36. If it is determined that they do not match, the process proceeds to A32.

  A32 to A36 are the same as in the third embodiment. However, A34 is not executed.

  According to the above processing, if the mounting destination ID and the main body ID do not match, the setting information stored in the camera main body 14 is used. Therefore, the setting information changed by another person is used as it is in the own camera main body 14. Therefore, it is possible to use appropriate setting information for each combination of the lens unit 12 and the camera body 14.

<Fifth Embodiment>
When the lens unit 12 is attached again to the camera body 14 that has been attached in the past, if the same setting information as the setting information used in the camera body 14 is transmitted from the lens unit 12 to the camera body 14, Useful with the same settings. The following processing is an example for realizing this purpose.

  Hereinafter, the flow of setting processing executed by the camera system 10 will be described with reference to the flowchart of FIG. Of this processing, A1 to A9 are executed by the main body CPU 200 as in the first embodiment. The lens CPU 118 executes B21 to B28. However, in A6, it is assumed that the camera body 14 transmits its own body ID stored in the flash ROM 206 to the lens unit 12 together with the write command.

  B21 sequentially stores the data constituting the setting information received by the high-speed serial driver 142 in the RAM 120 in response to receiving the main body ID, the write command, and the setting information. At the same time, an error during communication is monitored, and if communication is completed without detecting an error, the process proceeds to B22. If an error is detected during communication, the process proceeds to B28.

  In B22, the body ID of the camera body 14 mounted in the past stored in the nonvolatile memory 122 is compared with the body ID received from the camera body 14, and it is determined whether or not they match. If the two match, it is determined that the registered camera body 14 is mounted, and the process proceeds to B23. If the two do not match, it is determined that an unregistered camera body 14 is mounted, and the process proceeds to B24.

  In B23, the received setting information and the received body ID are associated with each other and written in the nonvolatile memory 122.

  In B24, it is determined whether or not there is a free area for storing the setting information in the flash ROM 206. If an empty area exists, the process proceeds to B25, and if not, the process proceeds to B26.

  In B25, the changed setting information is written in the free area of the flash ROM 206.

  In B26, the changed setting information is overwritten on the setting information with the old storage date and time.

  In B27, a notification to the effect that the changed setting information has been normally written is transmitted to the camera body 14.

  In B28, a notification that the changed setting information has not been normally written is transmitted to the camera body 14.

  FIG. 8 shows a flow of processing for transmitting setting information corresponding to the camera body 14 that is actually mounted out of the setting information for each body ID recorded in the lens unit 12 as described above. The lens CPU 118 executes B31 to B34. A11 to A23 are the same as in the second embodiment. However, in A15, the main body ID stored in the flash ROM 206 is notified together with the setting information transmission request.

  The lens unit 12 starts the process of B31 in response to the setting information request from the camera body 14. That is, in B31, the main body ID stored in the nonvolatile memory 122 is compared with the notified main body ID, and setting information corresponding to the same main body ID as the notified main body ID is stored in the non-volatile memory 122. Determine whether or not. If the setting information corresponding to the same body ID as the notified body ID is stored in the non-volatile memory 122, the process proceeds to B32. If not stored, the process proceeds to B33.

  In B32, the setting information corresponding to the notified main body ID is read from the nonvolatile memory 122 to the RAM 120.

  In B <b> 33, the setting information stored in the nonvolatile memory 122 including the latest date / time information is read out to the RAM 120.

  In B34, the setting information read to the RAM 120 is transmitted to the camera body 14.

  In this way, if the combination of the camera body 14 and the lens unit 12 is the same as before, the same setting information can be used.

Diagram showing the appearance of the camera system Block diagram of the camera system The flowchart which shows the flow of the setting information writing process of the camera system which concerns on 1st Embodiment. The flowchart which shows the flow of the setting process of the camera system which concerns on 1st Embodiment. The flowchart which shows the flow of the setting process of the camera system which concerns on 2nd Embodiment. The flowchart which shows the flow of the setting process of the camera system which concerns on 3rd Embodiment. The flowchart which shows the flow of the setting information writing process of the camera system which concerns on 4th Embodiment. The flowchart which shows the flow of the setting process of the camera system which concerns on 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Camera system, 12 ... Lens unit, 14 ... Camera body, 14a ... Main body side mounting contact, 20 ... Release button, 26 ... LCD, 118 ... Lens CPU, 122 ... Non-volatile memory, 200 ... Main body CPU, 206 ... Flash ROM

Claims (12)

A connection unit connected to an interchangeable lens unit having an imaging system that acquires image data indicating a subject image received through an imaging lens, and image data and other data from the imaging system are transmitted and received through the connection unit A communication unit that controls the acquisition of other image data by the imaging system by transmitting control data to the imaging system via the communication unit, and the communication according to the control of the control unit A camera body comprising a recording unit for recording image data received by the unit,
A setting changing unit for changing setting information of the lens unit;
A setting information storage unit for storing the setting information changed by the setting change unit in a nonvolatile storage medium;
With
The communication unit is a camera body that transmits the setting information changed by the setting change unit to the lens unit. An error detection unit for detecting whether an error has occurred during transmission of the setting information from the communication unit;
The camera body according to claim 1, wherein the communication unit repeatedly transmits the setting information up to a predetermined number of times when the error detection unit detects an error. A connection unit connected to an interchangeable lens unit having an imaging system that acquires image data indicating a subject image received through an imaging lens, and image data and other data from the imaging system are transmitted and received through the connection unit A communication unit that controls the acquisition of other image data by the imaging system by transmitting control data to the imaging system via the communication unit, and the communication according to the control of the control unit A camera body comprising a recording unit for recording image data received by the unit,
A setting information storage unit that stores setting information of the lens unit in a nonvolatile storage medium;
A connection detection unit for detecting that the lens unit is connected to the connection unit;
An error detection unit for detecting whether an error has occurred during transmission / reception of data by the communication unit;
With
The communication unit receives setting information of the lens unit from the lens unit in response to the connection detection unit detecting the connection of the lens unit,
The control unit controls the operation of the imaging system according to the setting information stored in the setting information storage unit in response to the error detection unit detecting an error during reception of the setting information by the communication unit, A camera body that controls the operation of the imaging system according to the setting information received by the communication unit in response to the error detection unit not detecting an error during reception of the setting information by the communication unit.   When the error detection unit does not detect an error during reception of the setting information by the communication unit, the control unit stores the date and time information included in the setting information received by the communication unit and the setting information storage unit 4. The camera body according to claim 3, wherein the date and time information included in the set information is compared, and the operation of the imaging system is controlled according to the set information including the newer date and time information.   The control unit, when the error detection unit does not detect an error during reception of the setting information by the communication unit, identification information of the camera body connected in the past included in the setting information received by the communication unit And the identification information of the camera body stored in the setting information storage unit, if both match, the operation of the imaging system is controlled according to the setting information received by the communication unit, if both do not match The camera body according to claim 3, wherein the operation of the imaging system is controlled according to setting information stored in the setting storage unit. A connection unit connected to the camera body, a communication unit that transmits and receives the control data and other data via the connection unit, and a subject image received through the imaging lens according to control data received by the communication unit An interchangeable lens unit comprising an imaging system for acquiring image data,
A setting information storage unit for storing the setting information of each camera body in association with the identification information of each camera body;
A connection detection unit for detecting that the camera body is connected to the connection unit;
With
The communication unit receives the identification information of the camera body from the camera body connected to the connection unit in response to the connection detection unit detecting the connection of the camera body.
The control unit reads out setting information associated with the camera body identification information received by the communication unit from among the setting information stored in the setting information storage unit,
The communication unit is a lens unit that transmits the setting information read by the control unit to the camera body.   A camera system comprising a lens unit interchangeable with the camera body according to claim 1.   A camera system comprising the interchangeable lens unit according to claim 6 and a camera body.   A program for operating an arithmetic device as a control unit of a camera body according to claim 1.   A program for operating an arithmetic unit as a control unit of the lens unit according to claim 6.   A method for operating an arithmetic device as a control unit of a camera body according to claim 1.   A method for operating an arithmetic device as a control unit of the lens unit according to claim 6.

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