JP4493166B2 - Camera system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to various cameras that electrically drive and control various functions and operations when shooting and recording a subject image, in which various data for electrically driving and controlling the functions and operations of the camera are written and recorded. The present invention relates to a camera system that can perform data writing and reading of a volatile memory by a contact type and a non-contact type communication method.
[0002]
[Prior art]
In various electronic devices, the operation and operation functions of the devices are electrically driven and controlled using a microcomputer. In order to perform drive control using this microcomputer, various types of information data to be driven and controlled are stored in a nonvolatile memory, and the operation of the device and the drive control of the operation function are performed based on the information data.
[0003]
For example, in a silver salt photographing camera, based on a measuring device for measuring a subject distance and subject luminance, and a distance value and a luminance value measured by the measuring device, a focusing position, an aperture opening, and a shutter of the photographing optical lens system Calculate the speed, etc., and use this calculated value to set the focus of the optical lens, aperture setting, shutter speed, etc. using the electric drive controller, and wind up the filmed frame of the silver salt film And rewinding at the end of shooting, etc. are also performed by the electric drive control. The photographer simply loads the silver halide film into the camera, confirms the subject with the viewfinder, and operates the release button. Automatic cameras that can shoot are the mainstream.
[0004]
Calculation and drive control data (hereinafter referred to as operation drive control data) for various electric drive controls of these automatic photographing cameras are stored in a nonvolatile memory, and the stored data is read by a microcomputer. Operation control of various operation units of the camera is performed.
[0005]
This nonvolatile memory uses an EEPROM, and stores control parameters for correcting variations in distance measurement and luminance measurement, for example, in addition to camera operation drive control data. Data for changing the camera specifications accordingly is also stored.
[0006]
The above-mentioned various operation drive control data and data relating to control parameters and specifications (hereinafter referred to as information data) to be written and stored in this nonvolatile memory are generally written and stored in the camera assembly manufacturing process. Changes in the camera specifications according to the sales area of the camera are changed and rewritten after completion of the camera and are provided to the market.
[0007]
[Problems to be solved by the invention]
In the conventional automatic photographing camera, information data for controlling driving of various cameras is stored in a nonvolatile memory, and the stored information data is read by a microcomputer to perform driving control of various operation units of the camera. Yes. The information data stored in the non-volatile memory is written and stored in the assembly and manufacturing process of the camera. When the information data is inspected or rewritten after the camera is completed, it is for silver salt film sensitivity detection. An external computer device for data inspection or rewriting is connected to the DX terminal or strobe light emission control communication terminal, and this is performed via a microcomputer built in the camera.
[0008]
When the information data is inspected or rewritten using the DX terminal or the strobe communication terminal, a special contact pin or a jig for fixing the contact pin to the camera body is required. When a terminal or strobe communication terminal cannot be used, it is necessary to remove the exterior of the camera body and connect an external computer device using a terminal provided on a circuit board on which a microcomputer inside the camera is mounted. For this reason, the inspection and rewriting work of the information data becomes complicated, and the camera body may be damaged when the contact pin mounting jig is attached to the camera body or the exterior of the camera is removed.
[0009]
As described above, the conventional automatic camera has a problem in that the work for inspecting and rewriting various information data stored in the nonvolatile memory inside the camera is complicated, and the camera body is damaged.
[0010]
  SUMMARY OF THE INVENTION An object of the present invention is to provide a camera system that can inspect and rewrite data contents of a nonvolatile memory that stores various data for controlling the camera without contacting the camera body.
[0011]
[Means for Solving the Problems]
  A camera system according to an aspect of the present invention includes:Connecting means for performing contact communication, an antenna unit for performing non-contact communication,An microcomputer, a nonvolatile memory connected to the microcomputer, a first communication means capable of accessing the nonvolatile memory via the microcomputer, and the microcomputerWithout going throughA second communication means capable of accessing the nonvolatile memory;A power supply circuit that outputs drive power to the microcomputer, the nonvolatile memory, and the first communication means;HaveThe first communication means accesses the nonvolatile memory in response to communication received from the outside of the camera system via the connection means during operation of the power supply circuit.The second communication means isWhile the power supply circuit is not operating,From outside the camera systemReceive through the antenna sectionAccording to electromagnetic wavesTo the above non-volatile memoryAccess is performed, and electric power necessary for access is obtained from the electromagnetic wave.
[0012]
  The present inventionMosquitoMera systemIn,The antenna unit is disposed at the periphery of the photographing lens.
[0013]
  In the camera system of the present invention,The antenna unit is disposed on the back side of the body of the camera system.
[0014]
  The present inventionIn the camera system, the non-volatile memory has first and second information storage areas, and the first communication means can access the first and second information storage areas. The second communication means can access only the first information storage area.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of an embodiment of a camera system according to the present invention, FIG. 2 is an explanatory diagram for explaining a map of a nonvolatile memory used in the camera system of the present invention, and FIG. FIG. 4 is a flowchart for explaining the overall operation of the camera system according to the present invention, and FIG. 5 is a flowchart of the camera system according to the present invention. FIG. 6 is a flowchart for explaining a test operation of the camera system according to the present invention.
[0018]
In recent years, systems such as contactless security management, merchandise management, production management, and traffic management such as automatic ticket gates have been developed and put into practical use. This non-contact management system includes a data carrier having a function of transmitting electromagnetic waves to an accessory, a controller that receives a signal transmitted from the data carrier, performs bidirectional information exchange, and The system can also read and write information.
[0019]
  The present invention uses an RFID (Radio Frequency Identification) LSI element for reading and writing information in a non-contact manner and stores it in a nonvolatile memory built in the camera.ThisThe various control data described above are made by paying attention to the point that they can be written and rewritten.
[0020]
The overall configuration of the camera system according to the present invention will be described with reference to FIG.
Reference numeral 11 in the figure indicates the overall system configuration of the silver halide photography camera. The subject image incident through the photographing lens 12 is imaged on the silver salt film 15 through the diaphragm 13 and the shutter 14. It has become so. A subject image incident through the photographing lens 12 is reflected and dispersed by a subject image reflection function and a division function (not shown). The photographing lens 12 is provided with a focus adjustment function 16. For example, two images are divided by the dividing function, and the photographing lens 12 is slid and moved on the optical axis based on the phase difference between the two images. Then, the focusing of the subject image is adjusted. The diaphragm 13 controls the amount of light of the subject image transmitted through the photographing lens 12 by the diaphragm control mechanism 17. The shutter 14 is opened and closed at a predetermined shutter speed by the shutter control mechanism 18 to expose the subject image on the silver salt film 15. The silver salt film 15 is fed by a film feeding mechanism 19 to a predetermined photographing frame position when a silver salt film cartridge is loaded in the camera system 11, and is wound up by one frame when photographed. Rewind at the end. When one frame is rolled up after the subject image is exposed on the silver salt film 15, shooting date information, title information, shooting information, and the like are supplied from the information recording circuit 20 and recorded on the silver salt film 15.
[0021]
The focus adjustment mechanism 16, the aperture control mechanism 17, the shutter control mechanism 18, the film feeding mechanism 19, and the information recording circuit 20 are connected to a microcomputer (hereinafter referred to as a microcomputer) 26. The drive is controlled on the basis of A distance measuring circuit 21, a photometric circuit 22, a display circuit 23, an operation switch 24, and a clock circuit 25 are connected to the microcomputer 26.
[0022]
The distance measuring circuit 21 divides the subject image incident from the photographing lens 12 into two parts, measures the distance to the subject from the phase difference, and calculates the result from the measured distance value by the microcomputer 26. The focus position information is obtained and the focus adjustment mechanism 16 is driven and controlled. The focus adjustment mechanism 16 is provided with a sensor for detecting the current position of the photographic lens 12, and based on the current position information of the photographic lens 12 detected by this sensor and the focus position information calculated by the microcomputer. Then, the photographing lens 12 is slid to the in-focus position.
[0023]
The photometry circuit 22 measures a subject luminance value from the subject image. The microcomputer 26 calculates the aperture value of the aperture 13 and the shutter speed value of the shutter 14 from the subject luminance value measured by the photometry circuit 22 and the film sensitivity value read by the silver salt film sensitivity data reading means (not shown). The aperture control mechanism 17 and the shutter control mechanism 18 are driven and controlled based on the calculated aperture value and shutter speed value.
[0024]
The display circuit 23 is a display signal generation circuit for displaying the operation and operation state of the camera on a display unit provided in a camera body (not shown) based on a control signal from the microcomputer 26.
[0025]
The operation switch 24 drives and controls the first release switch, the focus adjustment mechanism 16 and the shutter control mechanism 18 that drive the distance measurement circuit 21 and the photometry circuit 22 to give driving instructions for distance measurement and photometry. Various switches such as a second release switch for exposing the camera, a strobe light emission on / off switch (not shown), and a power switch for turning on / off driving power for driving the entire camera.
[0026]
The clock circuit 25 generates date information to be written on the silver salt film 15 from the information recording circuit 20.
[0027]
The microcomputer 26 and various mechanisms / circuits 16 to 25 are supplied with driving power from a battery 27 via a power supply circuit 28. The power supply circuit 28 includes a DC / DC converter, a regulator, and the like, and stabilizes the current voltage supplied from the battery 27 and distributes it to each circuit.
[0028]
Further, a nonvolatile memory 29 using an EEPROM is connected to the microcomputer 26 via a communication line 30. The microcomputer 26 is connected to an external control device 41 using a computer device via a communication interface circuit 31, a communication line connection means 32, and a communication cable 42.
[0029]
Although details of the nonvolatile memory 29 will be described later, it is a memory in which various information data such as a language mode, a camera operation mode, an AF parameter, an AE parameter, a shutter parameter, and a power supply parameter are stored.
[0030]
The communication interface circuit 31 is an interface when the microcomputer 26 performs information data communication with the external control device 41. The communication line connection means 32 is a connection terminal provided on a circuit board on which the various circuit functions 20 to 23, 25, 28, 31, the microcomputer 26, the nonvolatile memory 29, and the like are mounted. In place of this connection terminal, a DX terminal for reading film sensitivity information described in a cartridge of the silver salt film 15 (not shown) may be used.
[0031]
The external control device 41 accesses the nonvolatile memory 29 via the communication cable 42, the communication line connection means 32, the communication interface circuit 31, and the microcomputer 26, and writes and rewrites various information data. Note that accessing the nonvolatile memory 29 via the communication cable 42, the communication line connection means 32, the communication interface circuit 31, and the microcomputer 26 for the external control device 41 is referred to as contact communication in this specification.
[0032]
The non-volatile memory 29 is also connected to a non-contact communication unit 33 using RFID technology which is a kind of data carrier. The non-contact communication unit 33 includes a communication coil 34, a rectifier circuit 35, a regulator 36, a demodulation circuit 37, a modulation circuit 38, a control circuit 39, and a communication prohibition circuit 40.
[0033]
The communication coil 34 transmits / receives electromagnetic waves in a radio frequency band to / from a non-contact communication controller 43 described later. The rectifier circuit 35 rectifies the electromagnetic wave power received from the non-contact communication controller 43 received by the communication coil 34 and generates drive power for the non-contact communication unit 33. This driving power is also supplied to the nonvolatile memory 29. The regulator 36 stabilizes the rectified output from the rectifier circuit 35. The demodulation circuit 37 demodulates the information data included in the information data communication radio wave received by the communication coil 34 and supplies it to the control circuit 39. The information data includes the address of the nonvolatile memory 29, write / read command information, and the like. The modulation circuit 38 modulates a carrier wave based on the information data supplied from the control circuit 39 and transmits the carrier wave from the communication coil 34 to the non-contact communication controller 43. The control circuit 39 controls the writing and reading of information data with respect to the nonvolatile memory 29. The communication prohibition circuit 40 controls the prohibition of writing and reading of information data to and from the non-volatile memory 29 by the non-contact communication unit 33 based on the control from the microcomputer 26.
[0034]
Note that the non-contact communication unit 33 is driven by the driving power rectified by the rectifier circuit 35, and therefore, even when the battery 27 is not connected (the battery 27 is not loaded in the camera system 11). It is operable, and information data communication with the nonvolatile memory 29 is possible via the external control device 41 and a non-contact communication controller 43 described later.
[0035]
The external control device 41 can be connected to a non-contact communication controller 43. The non-contact communication controller 43 includes a communication interface circuit 44, a demodulation circuit 45, and a modulation circuit 46. A communication antenna 47 is connected to the circuit 45 and the modulation circuit 46. The non-contact communication controller 43 accesses information data in the nonvolatile memory 29 through the non-contact communication unit 33 based on a control command from the external control device 41. The communication interface circuit 44 of the non-contact communication controller 43 is an information data communication interface of the external control device 41, the demodulation circuit 45, and the modulation circuit 46. The demodulation circuit 45 is transmitted from the non-contact communication unit 33. The information data communication radio wave is demodulated, and the modulation circuit 46 modulates the information data from the external control device 41 to be transmitted to the non-contact communication unit 33.
[0036]
The microcomputer 26 is provided with a communication permission terminal 48. The communication permission terminal 48 is a terminal provided on a circuit board on which the various circuits 20 to 40 are mounted, and is used to stop the operation of the communication prohibition circuit 40 of the non-contact communication unit 33. By short-circuiting 48, the operation of the prohibition circuit 40 is stopped, and information data communication between the non-contact communication unit 33 and the non-contact communication controller 43 is enabled.
[0037]
As described above, the non-volatile memory 29 in which various information data for controlling the camera system are written and stored accesses the external control device 41 via the non-contact communication unit 33 and the non-contact communication controller 43. A non-contact communication method, and a contact communication method for accessing the external control device 41 via the communication line 30, the microcomputer 26, and the communication interface circuit 31. If the non-volatile memory 29 is accessed simultaneously by these two communication methods, the information data will be confused and inconvenient. Therefore, the microcomputer 26 drives and controls the communication prohibition circuit 40 to control the operation of the non-contact communication unit 33. Stop or operate.
[0038]
The communication prohibition circuit 40 is controlled so that the non-contact communication unit 33 is always in a non-operating state while the microcomputer 26 is operating. Therefore, the non-volatile memory 29 cannot be accessed by the non-contact communication method while the microcomputer 26 is operating. However, if the communication prohibition circuit 40 is brought into a non-operating state by the microcomputer 26 or the communication permission terminal 48, access by the non-contact communication method is possible even when the microcomputer 26 is operating. Further, when the external control device 41 is connected to the camera system 11 via the communication cable 42, it is also possible to supply a command to make the communication prohibition circuit 40 inactive from the external control device 41 to the microcomputer 26. .
[0039]
Next, the contents of the information data written and stored in the nonvolatile memory 29 and the storage area of the information data will be described with reference to the memory map of FIG.
The nonvolatile memory 29 uses an EEPROM, and is largely divided into a first information data storage area (hereinafter referred to as a first area) 51 and a second information data storage area (hereinafter referred to as a second area) 52. It is divided into two storage areas.
[0040]
The first area 51 is an area that can be accessed by a non-contact communication method, and the second area 52 is an area that is restricted so that it cannot be accessed by a non-contact communication method. That is, the first area 51 can be accessed by either the non-contact communication method or the contact communication method, and the second area 52 can be accessed only by the contact communication method, and cannot be accessed by the non-contact communication method.
[0041]
An address indicating a boundary (* 1 in the figure) between the first area 51 and the second area 52 is a BANK address. The BANK address is stored at a predetermined position in the first area 51, for example, at the head address (* 0 in the figure).
[0042]
The information data written and stored in the first area 51 stores, in addition to the BANK address, rewritable information data such as a language mode and a camera operation mode. The language mode is information indicating in what language the title information should be recorded on the silver halide film 15 and is preferably set for each country where the camera is sold. The camera operation mode is a camera operation mode that is initially set when the camera starts operation.
[0043]
This camera operation mode will be described in detail with reference to FIG. The camera operation mode includes information for controlling the distance measurement operation, the photometry operation, and the date data recording mode. Bit 0 is used to select a portion of the photographing area of the subject image captured by the photographing lens 12 during the distance measuring operation. When the bit 0 flag is “0”, the central portion of the photographing area is selected. If the flag is “1”, the distance measuring operation is performed at a plurality of points in the shooting area. Bit 1 is used to select at which part of the subject image captured by the taking lens 12 at the time of photometry operation. When the bit 1 flag is “0”, the photometry operation is performed only at the center of the image taking area. If the flag is “1”, the photometric operation is performed at a plurality of points in the imaging region. Bits 2 and 3 indicate the recording mode when date information is recorded on the silver salt film 15. When the flags of bit 3 and bit 2 are “00”, date recording is performed in the order of “year / month / day”. When the flag is “01”, the date is recorded in the order of “month / day / year”, and when the flag is “10”, the date is recorded in the order of “day / month / year”. The combination of the flag and the date order is not limited to the above, and can be changed according to preference. However, the order of the year, month, and day representing the date is optimal for the above three combinations.
[0044]
Thus, it is necessary to change the camera operation mode according to the language of the country in which the camera is used and the user's preference for distance measurement and photometry at the time of photographing a silver salt. For example, with regard to distance measurement and photometry described above, a user who is familiar with silver halide photography prefers distance measurement and photometry at one central point of the photographing area, and a user who does not perform silver salt photography much fails. It is desirable to perform distance measurement and photometry at a plurality of points in a shooting area with a small amount of light. For this reason, at the time of production of the silver halide photography camera, the distance measurement and the photometry operation mode are set to be performed at a plurality of points in the photographing area as the flag “1”. However, as described above, it is necessary to change the distance measurement and photometry operation mode to the operation mode in which the distance measurement and photometry are performed in the center of the photographing area and the language of the camera using the user's request. There is. In such a case, the bit of the camera operation mode is rewritten at a store or a service station. Information data that needs to be rewritten is written and stored in the first area 51.
[0045]
The information data written and stored in the second area 52 stores non-rewritable information data such as AF parameters, AE parameters, shutter parameters, and power supply parameters. When the subject distance is measured using the distance measuring circuit 21, the AF parameter accurately separates the subject distance if there is a sensitivity variation of the line sensor that separates two subject images and detects the phase difference between the two images. It cannot be detected. Therefore, this is a correction value for correcting the sensitivity variation. The AE parameter is a correction value for correcting the sensitivity variation of the photodiode that converts the subject luminance into an electrical signal when the subject luminance is measured using the photometry circuit 22. The shutter parameter is a correction value for correcting variation for controlling the travel of the shutter curtain of the shutter 14 at the correct time. The power supply parameter is a correction value for correcting an error between the battery voltage and the display voltage when the power held by the battery 27 is displayed on the display unit (not shown) to the user via the display circuit 23.
[0046]
The information data written and recorded in the second area 52 is a value obtained by testing and measuring each unit during camera assembly and manufacturing, and correcting the variation. . If the information data in the second area 52 is destroyed, it is necessary to return the camera body to the assembly manufacturing process again, test and measure again, and set and reconstruct the destroyed parameters.
[0047]
The situation in which the non-volatile memory 29 of the camera system 11 is accessed and information data is written and stored is as follows: (1) a camera assembly / manufacturing process, (2) a completed camera inspection process, (3) It is a process of shipping a camera to the market, and (4) a process of supporting an individual user.
[0048]
In the (1) camera assembly and manufacturing process, the camera is usually disassembled and manufactured in advance into a plurality of units, and each of the disassembled and manufactured units is sequentially incorporated into the camera body. An AF unit is incorporated in a certain manufacturing process, and AF parameters due to variations in the AF unit are obtained and recorded in the nonvolatile memory 29. Similarly, each time another unit is incorporated, parameters related to that unit are obtained and recorded in the nonvolatile memory 29.
[0049]
In the step of obtaining these various parameters, based on the command control from the external control device 41, the variation parameter is obtained from the variation detection of each unit and the variation. For this reason, the external control device 41 and the non-volatile memory 29 are accessed by the contact communication method via the microcomputer 26, the communication interface circuit 31, the communication line connection means 32, and the communication cable 42, and are accessed by the non-contact communication method. There is no need to use.
[0050]
The step (2) inspecting the completed camera product is a step of inspecting whether the completed camera can perform a predetermined operation and has a prescribed performance. In this inspection process, it is also inspected whether necessary information data is recorded in the second area 52 of the nonvolatile memory 29. Furthermore, writing predetermined data into the first area 51 of the nonvolatile memory 29 is also executed.
[0051]
In this inspection step, various modes can be considered for the access method between the nonvolatile memory 29 and the external control device 41 for inspection. For example, a contact communication method in which a DX terminal that reads a DX code indicating sensitivity data of the silver salt film 15 is connected to the external control device 41 as a communication line connection means 32, or a non-contact communication controller 43 and a non-contact communication unit 33 are connected. The contactless communication method used is used. However, if the camera is inspected by the contact communication method using the DX terminal, the work becomes complicated and there is a problem that the camera body is damaged. Therefore, it is desirable to inspect by the non-contact communication method.
[0052]
In the step (3) of shipping the camera to the market, the completed camera is packed and shipped to the market. In this state, for example, when rewriting to the language of the camera sales market, conventionally, in order to rewrite the language in the contact communication method, the camera package is unpacked and the communication cable 42 from the external control device 41 is disconnected. Although it was attached to the DX terminal, a jig for damaging the camera body or connecting it to the DX terminal was also a very complicated operation.
[0053]
For this reason, by rewriting the information data in the nonvolatile memory 29 of the camera in a state of being packed using the non-contact communication method, work complexity and camera body damage can be eliminated.
[0054]
In the step (4) of supporting individual users, as described above, ranging, photometry, and date display mode are changed according to user preferences. In this case, it is necessary to change and rewrite the desired mode without damaging the camera owned by the user.
[0055]
Next, the control operation of the camera system by the external control device 41 will be described with reference to FIG.
First, in step S11, the operator operates a keyboard, a mouse, or the like of the external control device 41 to select and input whether to access the nonvolatile memory 29 by a contact communication method or a non-contact communication method. If it is determined that the method selected and input in step S12 is contact communication, step S25 and subsequent steps are executed, and if it is determined that contactless communication is selected, step S13 and subsequent steps are executed.
[0056]
If it is determined in step S12 that the contact communication method has been selected, it is determined in step S25 whether the external control device 41 is connected to the communication line connecting means 32 via the communication cable 42 in a state where contact communication is possible. The As a result of the determination in step S25, if it is determined that communication is impossible, in step S26, the power switch provided on the operation switch 24 of the camera system 11 is urged to “turn on the camera power”. Or, a message such as “Please connect the communication cable between the PC and the camera correctly” prompting the connection of the communication cable 42 to the communication line connection means 32 is displayed on the external control device 41. When the operator is set in a communicable state, the process returns to step S25. If it is determined in step S25 that communication is possible, the operator selects and inputs a test mode in step S27. Next, the process branches to steps S29 to S33 depending on the content of the test mode selected and input in step S28.
[0057]
In step S29, the operation in the initial data setting mode is executed. In this initial data setting mode, when the nonvolatile memory 29 is incorporated in the camera system 11, the state of stored data is not fixed. Therefore, it is necessary to record a predetermined initial value, and this is an operation for recording this initial value.
[0058]
In step S30, the operation in the AF parameter adjustment mode is executed. Prior to execution of this AF parameter adjustment mode, the camera body is attached to a predetermined distance measuring apparatus. This distance measuring inspection apparatus is composed of a collimator and a standard chart necessary for a distance measuring operation. In this AF parameter adjustment mode, the distance measurement circuit 21 of the camera system 11 attached to the distance measurement inspection apparatus is caused to perform a distance measurement operation, and AF parameters for correcting errors are determined from the distance measurement results. The second area 52 is written and stored.
[0059]
In step S31, the operation in the AE parameter adjustment mode is executed. Prior to execution of this AE parameter adjustment mode, the camera body is attached to a brightness bench having a reference light source. In the AE parameter adjustment mode, the photometry circuit 22 of the camera system 11 attached to the luminance bench is subjected to photometry operation, AE parameters for correcting errors are determined from the photometry results, and the second area 52 of the nonvolatile memory 29 is determined. To record.
[0060]
In step S32, the operation in the shutter parameter adjustment mode is executed. Prior to executing this shutter parameter adjustment mode, the camera body is attached to the shutter tester. In this shutter parameter adjustment mode, the shutter 14 is driven at a predetermined shutter speed by the shutter drive mechanism 18 of the camera system 11 attached to the shutter tester, and the estimated shutter speed at this time and the shutter speed measured by the tester are The shutter parameter for correcting the error is determined from the difference between them and recorded in the second area 52 of the nonvolatile memory 29.
[0061]
In step S33, the operation in the power supply parameter adjustment mode is executed. Prior to executing this power parameter adjustment mode, the camera body is connected to a reference power source. In this power supply parameter adjustment mode, the camera system 11 is operated by changing the voltage of the reference power supply, and the power supply parameter for correcting the error is determined so that the voltage value corresponding to the change of the power supply voltage is displayed. It is recorded in the memory 29.
[0062]
That is, steps S29 to S33 are initialization of the nonvolatile memory 29 incorporated in the camera system 11 in the camera assembly manufacturing process, and operations of the distance measuring circuit 21, the photometric circuit 22, the shutter control mechanism 18, and the power supply circuit 28. The parameter for correcting the error is set. After these data are set, the data is written and stored in the second area 2 of the non-volatile memory 29 so that the change cannot be corrected, and the control of the external control device 41 by the contact communication method is performed. Perform under the direction of the directive.
[0063]
If it is determined in step S12 that the non-contact communication method is selected and input, it is determined in step S13 that communication with the external control device 41 using the contact communication method is possible. If it is determined that communication by the contact communication method is possible, a command to stop access to the nonvolatile memory 29 is issued to the microcomputer 26 of the camera system 11 in step S14. The microcomputer 26 stops the operation of the communication prohibition circuit 40 of the non-contact communication unit 33 based on an instruction to stop access to the nonvolatile memory 29 and stops access to the nonvolatile memory 29. As a result, the non-contact communication unit 33 can transmit / receive information data to / from the external control device 41 via the non-contact communication controller 43. On the other hand, if it is determined as a result of the determination in step S13 that contact communication is impossible, an instruction message for turning off the power of the camera system 11 and turning on the communication permission terminal 48 is displayed on the display circuit 23 in step S15.
[0064]
In the processes of steps S13 to S15, the external control device 41 basically does not access the nonvolatile memory 29 simultaneously in both non-contact communication and contact communication, but the two communication methods are normally used. Performing non-contact communication in a state in which the nonvolatile memory 29 is connected by the contact communication method via the communication cable 42 in order to check whether or not it can operate can be an assembly manufacturing process of the camera.
[0065]
When the operator turns off the power of the camera or turns on the communication permission terminal 48 according to the message of step S15, the operating microcomputer 26 stops driving the communication prohibition circuit 40, and access to the nonvolatile memory 29 is also stopped. The
[0066]
Next, in step S16, the BANK address (see FIG. 2) of the nonvolatile memory 29 is read via the non-contact communication controller 43 and the non-contact communication unit 33. In step S17, the operator inputs the address of the nonvolatile memory 29 desired to be accessed. With respect to the address input in step S17, it is determined in step S18 whether the operator has selected data reading from the nonvolatile memory 29 or data rewrite. If it is determined in step S18 that data rewrite has been selected, it is determined in step S19 whether the address input in step S17 is the address of the rewritable first area 51 of the nonvolatile memory 29. If it is not the address of the second area 52, a warning message for prompting the address input again is displayed in step S21, and the process returns to step S17. If it is determined as the address of the first area 51 as a result of the determination in step S19, the modified rewrite data in the nonvolatile memory 29 is input by the operator in step S20. In step S 20, the existing stored data is transferred to the non-contact communication controller 43 based on the address rewrite data input by the operator, and rewriting of the nonvolatile memory 29 is instructed.
[0067]
If it is determined in step S18 that data is to be read from the nonvolatile memory 29, in step S23, the designated address input by the operator in step S17 is transferred to the non-contact communication controller 43 to read data from the nonvolatile memory 29. Instruct. The non-contact type communication controller 43 performs transmission / reception by electromagnetic waves with the non-contact type communication unit 33 of the camera system 11 and reads data at a specified address from the nonvolatile memory 29. In step S24, the read data is externally controlled. It is displayed on the monitor of the apparatus 41.
[0068]
That is, among various information data to be written and stored in the nonvolatile memory 29 of the camera system 11, the BANK address of the nonvolatile memory 29, parameters relating to AF, AE, shutter, power supply, etc. to be written and stored in the second area 52, Is written and stored from the external control device 41 by the contact communication method, and information data such as language and camera operation can be written, read and rewritten by the non-contact communication method from the external control device 41.
[0069]
Next, the operation of the microcomputer 26 of the camera system 11 will be described with reference to FIG.
When a power switch, which is one of the operation switches 24 of the camera system 11, is turned on, the microcomputer 26 starts operating, and an initial setting operation is executed in step S51. In this initial setting operation, the initialization I / O port of the internal register of the microcomputer 26 is initialized. Next, in step S52, the communication prohibition circuit 40 of the non-contact type communication unit 33 is operated to make the regulator 36 and the control circuit 39 inactive, and the non-contact type communication controller 43 accesses the nonvolatile memory 29. Set so that it is not possible. In step S53, the communication interface circuit 31 is used to check whether there is a communication request from the external control device 41. If there is a communication request, a subroutine “test operation” described later is executed in step S54. If there is no communication request, data such as language mode and camera operation mode is read from the first area 51 of the nonvolatile memory 29 in step S55.
[0070]
Next, the state of the communication permission terminal 48 is determined in step S56. When the communication permission terminal 48 is turned on (short-circuited), connected to the ground, and determined to be low, the operation of the communication prohibition circuit 40 of the non-contact communication unit 33 is stopped in step S57. A state in which non-contact communication operation is permitted. Therefore, information data communication between the non-contact communication controller 43 and the non-contact communication unit 33 is possible. When non-contact communication is possible in step S57, the process returns to step S56, and steps S56 and S57 are periodically executed.
[0071]
If it is determined in step S56 that the communication permission terminal 48 is off (open) and high (high), the communication prohibition circuit 40 of the noncontact communication unit 33 is operated in step S58 to prohibit the noncontact communication. And
[0072]
Next, in step S59, it is determined whether the release switch is turned on. If it is determined that the release switch is turned on, step S65 and subsequent steps are executed. If it is determined that the release switch is off, the state of the power switch, which is one of the operation switches 24, is detected in step S60. If it is determined that the power switch is off, steps S61 and after are executed, and the power switch is turned on. Step S63 and subsequent steps are determined. If it is determined in step S60 that the power switch is off, the microcomputer 26 must stop operating. Before the microcomputer 26 stops operating, in step S61 the microcomputer 26 communicates with the non-contact communication unit 33. The operation of the prohibition circuit 40 is stopped to enable access to the nonvolatile memory 29 by non-contact communication. That is, when the camera system 11 is not operating, the nonvolatile memory 29 can be accessed at any time by the non-contact communication method. Next, in step S62, the system down process of the camera system 11 is executed to stop the operation of the microcomputer 26 and the operation of the entire system.
[0073]
If it is determined in step S60 that the power switch is on, it is determined in step S63 whether there is a communication request from the external control device 41. The operation in step S63 is the same as that in step S53. If there is a communication request from the external control device 41, the subroutine “test operation” in step S64 is executed. If it is determined that there is no communication request, the process returns to step S56.
[0074]
If it is determined in step S59 that the release switch is turned on, in step S65, information data relating to the distance of the subject is read from the distance measuring circuit 21, and in step S66, the AF parameter as a correction value is read from the nonvolatile memory 29. In step S67, the driving amount of the photographing lens 12 is calculated from the subject distance information data and the AF parameter. Based on the calculated driving amount of the photographing lens 12, the focus adjustment mechanism 16 is driven and controlled in step S68. The photographic lens 12 is controlled to move to the optimum focus position.
[0075]
Next, in step S69, information data relating to the brightness of the subject is read from the photometry circuit 21, the AE parameter as a correction value is read from the nonvolatile memory 29 in step S70, and the aperture value is obtained from the luminance information data and the AE parameter in step S71. Performs exposure calculation at shutter speed. Using the aperture value obtained in the exposure calculation in step S71, the aperture control mechanism 17 is driven and controlled in step S72 to drive and control the aperture 13 to the calculated aperture opening. Next, in step S73, the exposure in step S71 is performed. The shutter control mechanism 18 is driven and controlled using the shutter time obtained by the calculation, and the shutter 14 is driven to expose the silver halide film 15 to the subject image.
[0076]
When the shutter drive control in step S73 is completed, shooting data recorded on the silver salt film 15 in step S74 is created by the information recording circuit 20. This photographing data is date information read from the clock circuit 25, title information set by the user according to the language mode, and the like. Next, the silver salt film 15 exposed in step S75 is wound up based on the drive control of the film feeding mechanism 19 for one frame. During the winding operation, the information recording circuit 20 is driven and controlled, and the photographic data created in step S74 is recorded on the silver salt film 15. When the winding of one frame of the silver salt film 15 is completed, the process returns to step S58 to prepare for the next photographing operation.
[0077]
Next, the “test operation” in steps S54 and S64 will be described with reference to FIG.
In step S101, the operation mode of the communication request from the external control device 41 is input from the communication interface circuit 31 to the microcomputer 26 in step S53 or S63. In step S102, it is determined whether or not the operation mode input to the microcomputer 26 is a prohibit mode for prohibiting access to the nonvolatile memory 29. If it is determined that the access prohibition mode is set, the operation of the communication prohibition circuit 40 of the noncontact communication unit 33 is stopped to enable noncontact communication in step S103. Thereby, the external control device 41 can access the nonvolatile memory 29 using the non-contact communication controller 43 and the non-contact communication unit 33. The microcomputer 26 does not communicate with the nonvolatile memory 29 while the external control device 41 is transmitting the access prohibit mode of the nonvolatile memory 29. Therefore, a state in which the nonvolatile memory 29 is simultaneously accessed by two communication methods (non-contact communication method and contact communication method) does not occur. If it is determined in step S102 that the mode is not the access prohibition mode for the nonvolatile memory 29, the communication prohibition circuit 40 is operated in step S104 to prevent access to the nonvolatile memory 29 by non-contact communication.
[0078]
Next, in step S105, it is determined whether the operation mode is the initial data setting mode. If the operation mode is the initial data setting mode, initial data to be recorded in the nonvolatile memory 29 is input from the external control device 41 via the microcomputer 26 in step S106. In step S107, the initial data is recorded in the nonvolatile memory 29, and the process returns to step S101.
[0079]
If it is determined in step S105 that the mode is not the initial data setting mode, it is determined in step S108 whether the operation mode is the AF parameter setting mode. If it is determined that the operation mode is the AF parameter setting mode, the distance measuring circuit 21 is determined in step S109. Is controlled to drive the distance measurement. At this time, the camera body is made to measure the distance of the subject mounted on the standard distance by being attached to the inspection apparatus, and calculates and calculates the AF parameter for correcting the error of the distance measured by the distance measuring circuit 21. The calculation calculation of the AF parameter is executed based on the calculation means incorporated in the external control device 41 by transmitting the distance measurement information in the distance measurement circuit 21 to the external control device 41. The AF parameter calculated in step S109 is recorded in the nonvolatile memory 29 in step S110, and the process returns to step S101.
[0080]
If it is determined in step S108 that the mode is not the AF parameter setting mode, it is determined in step S111 whether the operation mode is the AE parameter setting mode. If it is determined that the operation mode is the AE parameter setting mode, a reference light source is used in step S112. Then, the photometry circuit 22 is driven and controlled to perform photometry. At this time, the camera body is mounted on a reference measurement bench to measure the luminance of the reference light source, and calculates and calculates an AE parameter for correcting an error between the luminance value measured by the photometry circuit 22 and the luminance value of the reference light source. . The calculation calculation of the AE parameter is executed based on the calculation means incorporated in the external control device 41 by transmitting the photometric information in the photometry circuit 21 to the external control device 41. The AE parameter calculated in step S112 is recorded in the nonvolatile memory 29 in step S113, and the process returns to step S101.
[0081]
If it is determined in step S111 that the operation mode is not the AE parameter setting mode, it is determined in step S114 whether the operation mode is the shutter parameter setting mode. If it is determined that the operation mode is the shutter parameter setting mode, the shutter control mechanism 18 is determined in step S115. Is controlled to drive the shutter 14 in a predetermined time. At this time, the camera body calculates and calculates a shutter parameter that corrects an error between the shutter time attached to the shutter tester and driven by the shutter control mechanism 18 and the second measured by the shutter tester. The calculation of the shutter parameters is performed by transmitting information on the seconds set by the shutter control mechanism 18 and the seconds measured by the shutter tester to the external control device 41, and by the calculation means built in the external control device 41. Run on the basis. The shutter parameters calculated in step S1115 are recorded in the nonvolatile memory 29 in step S116, and the process returns to step S101.
[0082]
If it is determined in step S114 that the mode is not the shutter parameter setting mode, it is determined in step S117 whether or not the operation mode is the power supply parameter setting mode. If it is determined that the operation mode is the power supply parameter setting mode, the fluctuation of the power supply voltage is determined in step S118. Measure. This power supply voltage measurement was supplied by operating the camera system 11 with a reference power supply whose power supply voltage can be changed, changing the power supply voltage variably, and monitoring a battery checker (not shown). Whether the battery checker displays the power supply voltage is checked, and a power supply parameter for error correction is calculated and calculated so that the battery checker displays a correct voltage value. The power supply parameter calculated in step S118 is recorded in the nonvolatile memory 29 in step S119, and the process returns to step S101.
[0083]
If it is determined in step S117 that the operation mode is not the power supply parameter setting mode, it is determined in step S120 whether the operation mode is a test mode end command. If it is determined to be an end command, the process returns to step S101, and step S54 or S77 and subsequent steps shown in FIG. 4 are executed.
[0084]
As described above, the non-contact access to the non-volatile memory built in the camera system of the present invention is such that the focusing of the optical system, the aperture, the shutter speed, etc., which affect the shooting image quality of the subject shooting at the time of assembling and manufacturing the camera, etc. The information data related to these parameters is written and stored from an external control device in the contact communication system, and the shooting mode, date, language, etc. that can be set or changed after the assembly of the camera is not damaged. It is possible to rewrite and store from an external control device by the contact type communication system.
[0085]
In addition, as a non-contact communication method, a communication method using radio waves is used, and information data can be easily changed and rewritten within a predetermined communication range.
[0086]
Next, the arrangement position of the non-contact communication unit of the camera system according to the present invention on the camera body will be described with reference to FIGS. 7A and 7B show an external shape configuration of a camera body on which the camera system according to the present invention is mounted. FIG. 7A is a front perspective view, and FIG. 7B is a rear perspective view. FIG. 8 is a front perspective view showing an example in which the non-contact communication unit of the camera system according to the present invention is arranged in the front part of the camera body, and FIG. 9 shows the non-contact communication unit of the camera system according to the present invention in the camera body. It is a back perspective view which shows the example arrange | positioned at the back surface part.
[0087]
First, the external shape of the camera body 71 will be described with reference to FIG. The camera body 71 has a substantially rectangular parallelepiped shape, and a lens barrel 73 containing a photographing lens 73a for exposing and projecting a subject on a silver salt film is disposed in the center of the front portion 72. The lens barrel 73 is arranged to be extendable and contractable from the plane of the front portion 72 of the camera body 71 depending on the tele mode or the wide mode at the time of shooting an object. A finder window 72a having a built-in optical system for taking in subject light for a photographer to confirm a subject image, a strobe light emitting unit 72b, and the like are provided on the upper portion of the front portion 72. A release button 74a is provided on the upper surface portion 74 of the camera body 71. When the release button 74a is pressed, photometry and distance measurement are performed, and a shutter and a diaphragm drive are performed. In the figure, reference numerals 75 and 76 are side portions of the camera body 71, and reference numeral 77 is a bottom surface portion. A finder eyepiece 72c for allowing a photographer to check the subject light captured by the finder window 72a is provided on the upper portion of the back surface portion 78 of the camera body 71.
[0088]
Although not shown, the camera system 11 described in FIG. 1 is built in the camera body 71 having such a configuration. The camera body 71 incorporating the camera system 11 is housed and packaged in a rectangular parallelepiped packaging box 79 indicated by a dotted line in FIG.
[0089]
In a state where the camera body 71 is housed in the packing box 79, the external control device 41 uses the non-contact communication controller 43 and the non-contact communication unit 33 of the camera system 11 in the non-contact communication method. Information data in the nonvolatile memory 29 of the system 11 is inspected and rewritten.
[0090]
In this case, the non-contact communication unit 33 of the camera system 11 needs to be provided in the camera body 71 that can be close to the non-contact communication controller 43 and has the highest efficiency of electromagnetic wave transmission and reception. The communication unit 33 can be disposed on the camera body 71 on the surface on which the front surface portion 72, the upper surface portion 71, the left and right side surface portions 75, 76, the bottom surface portion 77, and the back surface portion 78 on which the lens barrel 73 is provided can be disposed. It becomes. That is, in order to perform non-contact communication with the non-contact communication controller 43 in the state of being stored in the packing box 79, the inside of the plane of the camera body 71 stored in parallel facing the six surfaces of the packing box 79. Is a position where the non-contact communication unit 33 can be arranged.
[0091]
Next, an example in which the non-contact communication unit 33 of the camera system 11 is arranged on the lens barrel 73 and the front surface portion 72 of the camera body 71 will be described with reference to FIG. In the figure, the camera body 71 and the lens barrel 73 are indicated by dotted lines.
[0092]
The non-contact communication unit 33 of the camera system 11 is formed on the flexible substrate 81. The flexible substrate 81 includes a rectifier circuit 35, excluding the antenna portion 81a on which a coil pattern 82 corresponding to the communication coil 34 of the non-contact communication unit 33 is formed, and the communication coil 34 of the non-contact communication unit 33. The regulator 36, the demodulation circuit 37, the modulation circuit 38, the control circuit 39, and the integrated circuit element (hereinafter referred to as an IC element) 84 constituting the communication prohibition circuit 40, the nonvolatile memory (EEPROM) 29, and the microcomputer 26 are mounted. A circuit portion 81c having a wiring pattern for connecting the IC element 84, the nonvolatile memory 29 and the microcomputer 26, and a connection portion 81b having a wiring pattern 83 for connecting the antenna portion 81a and the circuit portion 81c. It is made up of.
[0093]
The antenna portion 81 a is disposed in front of the peripheral portion of the photographing lens 73 a of the lens barrel 73 of the camera body 71. For this reason, an opening 81d is formed in the central portion of the antenna portion 81a so that the photographing lens 73a is exposed. The connecting portion 81b is disposed along the outside of the photographic lens (not shown) of the lens barrel portion 73, and the circuit portion 81c is disposed inside the front surface portion 72 of the camera body 71.
[0094]
As described above, the antenna portion 81a constituting the communication coil 34 of the non-contact type unit 33 is efficiently placed in a relatively narrow position between the exterior of the lens barrel portion 73 and the exposed surface of the photographing lens 73a. The lens barrel portion 73 and the non-contact communication controller 43 can be placed closest to each other via the packing box 79 when they can be arranged and stored in the packing box 79.
[0095]
Next, an example in which the non-contact communication unit 33 of the camera system 11 is arranged on the back surface 78 of the camera body 71 will be described with reference to FIG. In the figure, the camera body 71 and the back surface portion 78 are indicated by dotted lines.
[0096]
A planar printed wiring board 91 is disposed inside the back surface 78 of the camera body 71. The printed wiring board 91 is mounted with the IC element 84 constituting the various circuits excluding the communication coil 34 of the non-contact type communication unit 33, the non-volatile memory 29 and the microcomputer 26 and connected to them. A wiring pattern not provided is provided. A coil pattern 92 for forming the communication coil 34 is formed on the outer peripheral surface of the printed wiring board 91 so as to surround the IC element 84, the nonvolatile memory 29, and the microcomputer 26. 84 is connected with a wiring pattern.
[0097]
The rear surface of the camera body 71 is a plane having the largest area among the six planes of the camera body 71, and the non-contact communication unit 33, the nonvolatile memory 29 and the microcomputer 26 are provided on the rear surface portion 78. The printed wiring board 91 having a relatively large area can be used, and the arrangement of various electric circuit components and the wiring pattern mounted on the printed wiring board 91 are easy. Further, since the coil pattern 92 forming the communication coil 34 is provided along the outer peripheral surface of the printed wiring board 91, the shape can be formed large, and the electromagnetic transmission / reception range with the non-contact communication controller 43 is widened.
[0098]
In addition, it is also possible to mount and arrange various other circuits constituting the camera system 11 other than the IC element 84, the nonvolatile memory 29, and the microcomputer 26 constituting the non-contact communication unit 33 on the printed wiring board 91. is there.
[0099]
It is also possible to deform the shape of the printed wiring board 91 and arrange it on the upper surface 74 and the left and right side surfaces 75 and 76 which are other planes of the camera body 71.
[0100]
As described above, the non-contact type communication unit 33 is arranged on each plane portion of the camera body 71, so that electromagnetic waves can be easily transmitted and received with the non-contact type communication controller 43, and the completed camera is mounted on the packing box 71. Inspection, confirmation, and rewriting of various information data written and stored in the non-volatile memory 29 of the camera system 11 can be performed without unpacking the packaging box 71 and the packaging box 71 and the camera body 71. Will not hurt.
[0101]
  As described above, according to the embodiment of the present invention, when the camera is assembled and manufactured, various control data can be written using the first communication means, and various information data after the completion of the camera is inspected or changed. In some cases, the data can be inspected or rewritten using the second communication means.
  Although the embodiment of the present invention has been described by taking a silver salt photographing camera as an example, the non-volatile memory in which various information data for controlling the operation and operation of the electronic imaging camera are written and stored also in the electronic imaging camera. However, it is possible to change and rewrite information data using the non-contact communication method, and the non-contact access of the nonvolatile memory by the non-contact communication method of the present invention can be adopted.
[0102]
In the present invention, an EEPROM is used as the nonvolatile memory. A FeRAM (Ferroelectric Random Access Memory) ferroelectric nonvolatile memory can also be used as a memory element other than the EEPROM.
[0103]
Furthermore, in addition to silver salt photography or electronic imaging cameras, various electronic devices in which various information data for controlling the operation and operation of the device are written and stored in a non-volatile memory are in the state of finished products of the electronic devices. The information data stored in the non-volatile memory can be changed and written, and the non-contact access of the non-volatile memory by the non-contact communication method of the present invention can be adopted.
[0104]
【The invention's effect】
The present inventionAccording to the above, when the camera system is assembled and manufactured, the contact-type communication method is used to access the nonvolatile memory inside the system, and when the various inspections after the camera system is completed or when it is necessary to change the specifications of the camera system When accessing this nonvolatile memory, a non-contact communication method can be used. Therefore, according to the present invention, it is possible to access a nonvolatile memory provided in the camera system without damaging the body of the camera system. Furthermore, according to the present invention, even when the camera system is packed, it is possible to access a nonvolatile memory provided in the camera system.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the overall configuration of an embodiment of a camera system according to the present invention.
FIG. 2 is an explanatory diagram for explaining a map of a nonvolatile memory used in the camera system of the present invention.
FIG. 3 is an explanatory diagram for explaining data contents of a camera operation mode stored in a nonvolatile memory used in the camera system of the present invention.
FIG. 4 is a flowchart for explaining the overall operation of the camera system according to the present invention.
FIG. 5 is a flowchart for explaining the operation of the microcomputer of the camera system according to the present invention.
FIG. 6 is a flowchart for explaining a test operation of the camera system according to the present invention.
FIG. 7 is a perspective view showing an external shape configuration of a camera body equipped with a camera system according to the present invention.
FIG. 8 is a front perspective view showing an example in which the non-contact communication unit of the camera system according to the present invention is arranged on the front part of the camera body.
FIG. 9 is a rear perspective view showing an example in which the non-contact communication unit of the camera system according to the present invention is arranged on the rear surface of the camera body.
[Explanation of symbols]
11 ... Camera system
12 ... Photography lens
13 ... Aperture
14 ... Shutter
15 ... Silver salt film
16. Focus adjustment mechanism
17 ... Aperture control mechanism
18 ... Shutter control mechanism
19 ... Film feeding mechanism
20 ... Information recording circuit
21. Ranging circuit
22: Photometry circuit
23 ... Display circuit
24. Operation switch
25. Clock circuit
26 ... Microcomputer
27 ... Battery
28 ... Power supply circuit
29 ... Non-volatile memory
30 ... communication line
31. Communication interface circuit
32. Communication line connection means
33 ... Non-contact communication unit
34 ... Communication coil
35 ... Rectifier circuit
36 ... Regulator
37. Demodulator circuit
38. Modulation circuit
39 ... Control circuit
40. Communication prohibition circuit
41 ... External control device
42 ... Communication cable
43. Contact communication controller
44 ... Communication interface
45. Demodulator circuit
46. Modulation circuit
47. Communication antenna
48 ... Communication permission terminal

Claims (4)

Connection means for performing contact communication;
An antenna for performing contactless communication; and
And microcomputers,
A non-volatile memory connected to the microcomputer;
First communication means accessible to the non-volatile memory via the microcomputer;
Second communication means capable of accessing the nonvolatile memory without going through the microcomputer;
A power supply circuit that outputs drive power to the microcomputer, the nonvolatile memory, and the first communication means;
Have
The first communication means accesses the nonvolatile memory in response to communication received from the outside of the camera system via the connection means during operation of the power supply circuit.
The second communication means accesses the non-volatile memory in accordance with electromagnetic waves received from outside the camera system via the antenna unit while the power supply circuit is not operating, and uses the power necessary for access from the electromagnetic waves. A camera system characterized by The camera system according to claim 1, wherein the antenna unit is disposed in a peripheral part of the photographing lens. The camera system according to claim 1, wherein the antenna unit is disposed on a back surface of a body of the camera system. The non-volatile memory has first and second information storage areas, the first communication means can access the first and second information storage areas, and the second communication means 4. The camera system according to claim 1, wherein only the first information storage area can be accessed. 5.

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