JP2005033325A - Electronic camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic camera capable of easily analyzing errors and determining faults. <P>SOLUTION: The electronic camera has built-in history memory 40 and an error information memory 41. The history memory 40 records an operation log recording operation contents in time series, and operation-relating information relating to the operation of the electronic camera. The operation-relating information is updated every time setting and condition of the electronic camera. When an error occurs, the operation log and operation-relating information immediately before the occurrence of the error read from the history memory 40 are written into an error information memory 41 together with an error code indicating the error. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic camera.
[0002]
[Prior art]
Electronic cameras that take still images and moving images with an image sensor such as a CCD image sensor and store the obtained image data in a storage medium such as a memory card have become widespread. In such an electronic camera or the like, one that records error information generated in order to facilitate error analysis, failure determination, and repair is known (see, for example, Patent Documents 1 to 3).
[0003]
Patent Document 1 stores the operation contents of an electronic device in a non-volatile operation history storage memory in the order of operation, and stores an error content and an operation performed immediately before the error occurs when an error occurs. Is stored in the nonvolatile error history storage memory, and self-diagnosis is performed from the contents of the operation history storage memory and the error history storage memory. It is.
[0004]
Japanese Patent Application Laid-Open No. H10-228707 can switch between an error display for a user and a detailed error display for maintenance. In Patent Document 3, an error code corresponding to the generated error and an operation code corresponding to the operation of the electronic camera are recorded together with image data on a removable recording medium.
[0005]
[Patent Document 1]
JP-A-11-249925
[Patent Document 2]
Japanese Patent Laid-Open No. 11-266386
[Patent Document 3]
JP 2001-109030 A
[0006]
[Problems to be solved by the invention]
By the way, errors that occur in electronic devices such as electronic cameras are not only those that occur depending on the operation, so from the details of the error that occurred as described above and the operation details that have been performed so far, In some cases, it was difficult to determine the cause of the error due to lack of information. For this reason, there have been problems in repairing such that it takes a long time for error analysis or the user needs to ask about the detailed usage status.
[0007]
The present invention has been made in view of the above problems, and an object thereof is to provide an electronic camera that can more easily identify various error causes.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, an operation history storage means for storing operation contents corresponding to the operation of the operation unit in time series, an error detection means for detecting the occurrence of an error, and a nonvolatile memory Information memory, when an error is detected by the error detection means, the contents of the error that occurred, the operation contents immediately before the error occurrence stored in the operation history storage means, and the operation of the camera when the error occurred And recording control means for recording related operation-related information in the error information memory.
[0009]
In the invention according to claim 2, the operation history storage means records the operation time together with the operation content.
[0010]
According to the third aspect of the present invention, the recording control means selects operation-related information based on the content of the error that has occurred and records it in the error information memory.
[0011]
According to the fourth aspect of the present invention, there is provided an error reproduction means for operating each part of the camera based on the operation content recorded in the error information memory and the operation related information in order to reproduce the error.
[0012]
In the invention according to claim 5, the error information memory can record operation contents and operation related information corresponding to a plurality of errors, and the error reproducing means is externally provided among the plurality of errors recorded in the error information memory. The error is reproduced based on the operation content and the operation related information corresponding to the specified error.
[0013]
According to the sixth aspect of the invention, the error reproduction means performs an operation for error reproduction in response to a specific operation being performed from the outside.
[0014]
According to the seventh aspect of the invention, the error reproduction means is configured to determine the operation state and the set state at the time when the operation for error reproduction should be started according to the operation content, based on the operation related information recorded in the error information memory. The operation of each part of the camera is sequentially performed on the basis of the operation content recorded after obtaining the obtained operation state and setting state.
[0015]
According to the eighth aspect of the invention, there is provided display means for displaying the content of the error that has occurred when an error occurs, and displaying error information corresponding to the error being reproduced when reproducing the error.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
The front of the electronic camera embodying the present invention is shown in FIG. 1, and the back is shown in FIG. On the front surface of the camera body 2, a photographing lens 3, a strobe light emitting unit 4, an objective window 5a of an optical finder 5 and a release button 6 are provided. On the back side, an eyepiece window 5b of the optical viewfinder 5, an LCD 7, and a key input unit 8 are provided. Furthermore, an operation mode selection dial 9 is arranged on the upper surface.
[0017]
On the side surface of the camera body 2, a memory slot and a communication terminal lid (not shown) are provided. A memory card 10 (see FIG. 3) is attached to the memory slot, and image data obtained by photographing is recorded in the attached memory card 10. The communication terminal is connected to a data communication cable when performing data communication with an external device such as a computer.
[0018]
The observable range of the optical viewfinder 5 changes according to zooming of the photographing lens 3. The LCD 7 constitutes a so-called electronic viewfinder that displays in real time a subject image photographed through the photographing lens 3 and is used for image reproduction. The LCD 7 displays a menu screen for performing operation settings and the like in the setup mode. Further, when an error occurs, information about the error that has occurred is displayed on the LCD 7.
[0019]
The key input unit 8 includes a power button 12, a cancel button 13, a tele button 14a and a wide button 14b for zooming, an UP button 15a, a DOWN button 15b, a LEFT button 15c, a RIGHT 15d, and an OK button 16.
[0020]
By pressing the power button 12, the electronic camera is turned on / off. The photographing lens 3 is zoomed to the telephoto side by operating the Tele button 14a, and to the wide angle side by operating the Wide button 14b. The buttons 13, 15a to 15d, 16 are used for various setting operations on the menu screen displayed in the setup mode, frame-by-frame playback, selection operation, deletion operation, and the like.
[0021]
By operating the operation mode selection dial 9, a still image shooting mode, a moving image shooting mode, a playback mode, and a setup mode can be selected. In the still image shooting mode, a still image is shot in response to the pressing operation of the release button 6, and in the moving image shooting mode, when the release button 6 is pressed, shooting of the moving image is started, and then the release button 6 is pressed. Then, the movie recording is stopped. In the reproduction mode, an image recorded on the memory card 10 is displayed on the LCD 7. In the setup mode, the menu screen of the electronic camera is displayed on the LCD 7 and various settings can be made. When communicating with an external device, the communication mode is selected by an operation in the setup mode.
[0022]
In the still image shooting mode, single frame shooting, normal continuous shooting, cycle continuous shooting, and bracket continuous shooting can be selected from the menu screen. In the single frame shooting, a still image of one frame is shot every time the release button 6 is pressed. In normal continuous shooting, still images are shot continuously while the release button 6 is pressed. In cycle continuous shooting, continuous shooting is performed in the same way as normal continuous shooting, but the release button 6 is released. For example, four frames of still images up to immediately before the time point are recorded on the memory card 10. In bracket continuous shooting, still images of a plurality of frames with different exposure amounts are shot by a single release operation.
[0023]
The strobe light emitting unit 4 emits strobe light toward the subject in synchronization with the shooting of a still image. The flash emission is controlled according to the emission mode set on the menu screen. The flash mode includes an automatic flash mode that automatically fires the flash when the subject brightness is below the specified level, a forced flash mode that fires the flash regardless of the subject brightness, a flash-free mode that does not fire the flash, and a night scene. And slow sync mode for flash photography.
[0024]
The configuration of the electronic camera is shown in FIG. The system controller 20 controls each part of the electronic camera in a predetermined sequence in accordance with an operation signal from the operation unit 21. The operation unit 21 includes a release button 6, a key input unit 8, and an operation mode selection dial 9, and sends operation signals according to these operations to the system controller 20.
[0025]
The system controller 20 is connected to a ROM 20a and a RAM 20b. The ROM 20a stores a program for controlling various operations of the electronic camera, and the system controller 20 controls each unit according to the program. The RAM 20b is used as a work memory in which various variables necessary for program execution are temporarily written.
[0026]
The power source unit 22 supplies power to each unit of the electronic camera using the battery 23 as a power source. The power supply unit 22 sends remaining capacity information corresponding to the remaining capacity of the battery 23 to the system controller 20.
[0027]
The lens driving unit 24 is controlled by the system controller 20 to drive the focus lens and the variable power lens of the photographing lens 3 to perform focusing and zooming. The lens driving unit 24 includes a sensor that detects a focus position and a zoom position which are positions of the focus lens and the zoom lens of the photographing lens 3, and receives focus position information and zoom position information corresponding to each position as a system controller. Send to 20. The system controller 20 detects a focus error and a zoom error in addition to detecting the shooting distance to the subject and the focal length of the shooting lens 3 based on the focus position information and the zoom position information.
[0028]
A CCD image sensor 25 is disposed behind the photographing lens 3, and a diaphragm of the diaphragm mechanism 26 and a shutter blade of the shutter mechanism 27 are disposed between the photographing lens 3 and the CCD image sensor 25. . The CCD image sensor 25 is driven by the CCD drive unit 28 to convert an optical subject image into an electrical photographing signal and output it. A photographing signal from the CCD image sensor 25 is sent to the A / D converter 29 and converted into image data.
[0029]
The exposure amount of the CCD image sensor 25 is adjusted by the electronic shutter of the CCD image sensor 25 and the aperture of the aperture mechanism 26 when shooting a moving image and during continuous shooting, and the aperture mechanism 26 when shooting one frame. And the shutter blades of the shutter mechanism 27. The aperture of the aperture mechanism 26 and the shutter speed of the electronic shutter / shutter mechanism 27 are controlled by the system controller 20 based on an AE signal described later.
[0030]
The system controller 20, A / D converter 29, AE / AF processing unit 31, image processing unit 32, media I / F (interface) 33, LCD driver 34, and communication control unit 35 are connected via a data bus 39. The data can be exchanged between each other.
[0031]
Based on the image data from the A / D converter 28, the AE / AF processing unit 31 sends to the system controller 20 an AE signal corresponding to the luminance of the object being photographed and an AF signal corresponding to the contrast of the image. The system controller 20 feedback-controls the shutter speed and the aperture so that an appropriate exposure amount is obtained based on the AE signal. Further, the system controller 20 controls the lens driving unit 24 so that the contrast is maximized based on the AF signal so that the object being photographed is brought into focus.
[0032]
The image processing unit 32 performs data processing such as gamma correction, white balance adjustment, change to the set number of pixels, data compression at a compression rate according to the set image quality, and decompression of the compressed data. In addition to automatic white balance in which parameters are automatically set based on image data, the user can specify the type of light source from a menu screen displayed in the setup mode. The number of pixels and the image quality are set by the user from the menu screen.
[0033]
The media I / F 33 performs writing and reading of the memory card 10 mounted in the memory slot. The image data obtained in response to the pressing operation of the release button 6 is processed by the image processing unit 32 and then sent to the media I / F 33 to be given a predetermined file name and written to the memory card 10. At the time of reproduction, image data is read from the memory card 10 by the media I / F 33, processed by the image processing unit 32, and then sent to the LCD driver 34, so that the image recorded on the memory card 11 is displayed on the LCD 7. Is displayed.
[0034]
The media I / F 33 sends card information such as the presence / absence of the memory card 9 and the remaining recordable capacity to the system controller 20. Further, when an error occurs in recording or reading data from the memory card 10, the media I / F 33 sends an error signal corresponding to the error to the system controller 20. The system controller 20 detects an error relating to the memory card 10 based on the card information and the error signal.
[0035]
The LCD driver 34 displays an image on the LCD 7 based on the image data. The LCD driver 34 displays a menu screen, a cursor, operation guidance, information on an error, and the like on the LCD 7 under the control of the system controller 20.
[0036]
The communication I / F 36 includes a connection terminal and is connected to an external device via a communication cable. Under the communication mode, the communication control unit 35 controls data communication with an external device via the communication I / F 36. Thereby, the contents of the memory card 10 can be read from the connected external device, for example, a computer. The communication control unit 36 sends a communication state signal indicating a communication state with the external device to the system controller 20. The system controller 20 detects a communication error based on the communication status signal.
[0037]
The strobe device 37 includes a strobe discharge tube provided inside the strobe light emitting unit 4, a main capacitor that is charged prior to strobe light emission, and a charging circuit that charges the main capacitor. The strobe device 37 periodically monitors the charging voltage of the main capacitor, for example, and controls the charging so that the charging voltage of the main capacitor becomes a predetermined charging level at the start of still image shooting. The strobe device 37 emits strobe light when a sync signal synchronized with still image shooting is input from the system controller 20. Strobe light from the strobe discharge tube is emitted from the strobe light emitting unit 4 toward the subject. The buzzer 38 generates an operation sound when the operation unit 21 is operated, and generates a warning sound to notify the user when an error of the electronic camera occurs.
[0038]
The system controller 20 is connected to a history memory 40 as an operation history storage means and an error information memory 41. As the error information memory 41, a non-volatile memory, for example, an EEPROM is used, so that even if the battery 23 is removed, the contents stored therein are not lost.
[0039]
An operation log and operation-related information are recorded in the history memory 40 by the system controller 20. The operation log records the operation contents of the operation unit 21 in chronological order together with the operation time. As shown in an example in FIG. 4A, the operation log is recorded with the operation code encoded with the operation contents. ing. FIG. 4B shows the operation time and the operation content corresponding to the operation code in FIG.
[0040]
Of the operation codes shown in FIG. 4A, the upper four digits indicate the operation content, and the remaining lower eight digits indicate the operation time. A code corresponding to the operation content is predetermined for each operation of the operation unit 21, and an example thereof is shown in FIG. In addition, the 8-digit code indicating the operation time represents the year, month, day, hour, minute, and second in 32 bits, 7 bits, 4 bits, 5 bits, 5 bits, 6 bits, and 5 bits. It is. The 7-bit value corresponding to “year” is “0” in 1980, and the second digit is counted up every 60/32 seconds.
[0041]
The area of the history memory 40 for recording the operation log has a storage capacity sufficient to record an operation code for error analysis. When the storage capacity is full, the oldest history code is deleted and a new one is stored. The operation log is updated by writing the history code.
[0042]
As shown in FIG. 6A, in the error information memory 41, when an error occurs, an error code indicating the error content, an operation log read from the history memory 40 and immediately before the error occurs, and an error Operation related information at the time of occurrence is recorded by the system controller 20. Note that error contents, operation logs, and operation-related information (hereinafter referred to as error information) are encoded and written in various types of information. In FIG. It is written.
[0043]
As shown in FIG. 7, the error code is predetermined for the error content, and the system controller 20 records the error code corresponding to the detected error in the error information memory 41. The system controller 20 detects the occurrence of an error based on the information and signals from the above-described units and monitors the operation state of each unit, and determines the content of the error.
[0044]
For example, if the image data cannot be read from the memory card 9 or information such as its storage capacity cannot be normally obtained even though the memory card 9 is mounted, a memory card error is recorded and the image is taken. When the image data obtained by the above cannot be correctly recorded, a memory card write error is recorded. Further, in the case where the focus position detected based on the focus position information and the zoom position information, the zoom position does not reach the target position to be controlled by the system controller 20, a focus error and a zoom error are recorded.
[0045]
The operation related information is various information related to the operation of the electronic camera other than the error content and the operation content. In this example, as shown in FIG. 8 as an example, the remaining battery capacity of the battery 23 that is installed, the mode selected by the operation mode selection dial 9 and whether or not the date has been set are determined for a certain period of time. Information related to the system state and settings of the electronic camera, such as auto power-off setting that automatically turns off the power when it is not performed (hereinafter referred to as system information), is recorded as operation-related information. The operation-related information is updated at any time and recorded in the history memory 40, read from the history memory 40 when an error occurs, and recorded in the error information memory 41.
[0046]
Note that the error content shown in FIG. 7 is an example, and other errors can be recorded. Further, the items of the system information shown in FIG. 8 are an example, and the items can be appropriately set according to the specification, configuration, etc. of the electronic camera. For example, if the format of the video signal to be output to an external monitor such as the NTSC / PAL format can be set as the system information, the format is set when a recording medium of a different format or type can be mounted. The type of the recording medium, the setting of how to assign the number among the file names given when recording the image data, and the like may be added. Further, as the operation related information, information other than the above system information may be recorded, or the operation related information to be recorded may be selected according to the error content as in an example described later.
[0047]
The operation of the above configuration will be described. When shooting, displaying an image recorded on the memory card 10 on the LCD 7, deleting it, or changing the setting of the electronic camera, the power button 12 is pressed to turn on the power. Then, the operation unit 21 is operated.
[0048]
The system controller 20 monitors the operation of the power button 12 of the operation unit 21 even when the power is off. When the system controller 20 detects that the pressing operation of the power button 12 has continued for a predetermined time or more, the system controller 20 Set to ON to enable operation. When the power is turned on in this way, the system controller 20 records that the power button 12 is pressed and released in the history memory 40 as an operation code together with the operation time.
[0049]
Thereafter, as shown in FIG. 9, the operation of the operation unit 21 and the change in the system information are monitored by the system controller 20, and the operation state of each unit is monitored to detect an error. When the operation unit 21 is operated, an operation code corresponding to the operation and operation time is additionally recorded in the history memory 40. Further, when the operating state or setting of the system changes due to the operation of the operation unit 21 or the passage of time, the system information recorded in the history memory 40 is updated accordingly. For example, when the remaining capacity of the battery 23 is lowered from a sufficient state to almost half, the battery capacity item of the system information is rewritten from “full” to “half”.
[0050]
As described above, an operation log is created each time the operation unit 21 is operated, and system information is updated accordingly when the operating state or setting of the system changes. Then, the recording of the operation log and the update of the system information are continued until the power is turned off. If the power is turned on after the power is turned off, the recording of the operation log and the update of the system information are resumed as described above, and the operation code is added to the contents recorded so far in the operation log. The
[0051]
When the system controller 20 detects the occurrence of an error based on a signal or information from each unit when an initial operation performed in response to power-on or an operation in response to the operation of the operation unit 21 is performed, the occurrence occurs. The error content is displayed on the LCD 7, a warning sound is generated by the buzzer 38, and an error code corresponding to the error content is recorded in the error information memory 41. Further, the operation log and the system information recorded at the time when the error occurs are read from the history memory 40 by the system controller 20 and recorded in the error information memory 41, respectively.
[0052]
As a result, as shown in FIG. 6B, error information (error content, operation log, operation related information) is recorded in the error information memory 41. In the example shown in FIG. 6B, it can be seen that an error has occurred in writing data to the memory card 10. Further, the error may be caused by turning on the power with the power button 12, selecting the setup mode with the operation mode selection dial 9, various setting operations with the UP button 15a, DOWN button 15b, LEFT button 15c, RIGHT 15d, OK button 16, etc. Occurs after two shooting operations of a still image by pressing the release button 6 twice, a moving image mode selection operation with the operation mode selection dial 9, and a moving image shooting operation with the release button 6 in sequence. Recognize. Further, from the operation related information, it can be seen that when the error occurred, the remaining battery capacity was low, the display on the LCD 7 was turned on, and the like.
[0053]
When an error occurs as described above, the system information (operation-related information) is recorded along with the error code and the operation log until just before the error occurs, so it is possible to know the state of the electronic camera at the time of the error occurrence. Error analysis, failure judgment, and repair become easier.
[0054]
FIG. 10 shows an example of writing a plurality of error information in the error information memory. In this example, every time an error occurs, error information including an error code corresponding to the error that has occurred, an operation log immediately before the occurrence of the error, and operation related information is added to the error information memory 41.
[0055]
FIG. 11 shows an example in which an error is reproduced based on error information. In addition, except being demonstrated below, it is the same as that of 1st embodiment, The same code | symbol is attached | subjected to the substantially same component and the description is abbreviate | omitted. In this example, a case where a plurality of pieces of error information are recorded in the error information memory as in the example of FIG. 10 will be described. However, one error information may be recorded.
[0056]
When the release button 6 is pressed while a specific key operation, for example, the cancel button 13 is pressed, the system controller 20 enters an error reproduction mode for reproducing the generated error and performs the processing shown in FIG. . It is preferable that the specific key operation for shifting to the error reproduction mode does not shift to the error reproduction mode during normal use as a combination of button operations not normally operated. The key operation for selecting the error reproduction mode from the menu screen may be a specific key operation.
[0057]
When the error reproduction mode is set, each error code recorded in the error information memory 41 is read by the system controller 20 and a list of error contents corresponding to each error code is displayed on the LCD 7. The error contents to be reproduced are selected from the list on the LCD 7 and confirmed by operating the buttons 15a to 15d and the OK button 16.
[0058]
When the error content to be reproduced is determined, the system controller 20 reads the operation log corresponding to the selected error content and system information as operation related information from the error information memory 41. Based on the system information and the operation content of the operation log, the system controller 20 calculates a setting for starting error reproduction and an initial state that is a state of each unit. At this time, for example, starting from the setting state of the electronic camera indicated in the system information as a starting point, the initial state is determined by examining the change in the setting state, the state of each part, etc. by tracing back the operation code recorded in the operation log. calculate. When obtaining the initial state, the entire contents of the operation log may be traced in order, or may be traced back to the state immediately after the power is turned on.
[0059]
When the initial state is calculated as described above, each part is operated by the system controller 20 so as to be in this initial state, the electronic camera is initialized, and the contents of the initial state are displayed on the LCD 7. .
[0060]
After the initialization is completed, the operation code indicated in the operation log is recorded in the order in which they are recorded, and the operation contents indicated in the operation code are assumed to have been performed. The error reproduction operation is performed under the control of the system controller 20. Further, during the error reproduction operation, the content of the error reproduction operation is displayed on the LCD 7.
[0061]
The error reproduction operation is performed until the operation or setting change corresponding to the last operation code recorded in the operation log. When an error occurs in this error reproduction operation, the content of the generated error is displayed on the LCD 7 and the error reproduction mode is terminated. If no error occurs even after performing the error reproduction operation, “no error occurrence” is displayed on the LCD 7 and the error reproduction mode ends.
[0062]
As described above, in the error reproduction mode, the error reproduction operation is performed based on the error information. Therefore, it is possible to easily check whether the error is a reproducible error, and to make the failure analysis easier. . In order to improve error reproducibility, it is also preferable to record more detailed information, for example, the focal length of the photographing lens 3 at the start and end of the zoom operation, in the operation log.
[0063]
FIG. 12 shows an example in which operation-related information is selected according to the content of the error that has occurred. In addition, except being demonstrated below, it is the same as that of 1st embodiment, The same code | symbol is attached | subjected to the substantially same component and the description is abbreviate | omitted.
[0064]
In this example, in addition to system information, shooting information is used as operation-related information. For example, focusing errors, zooming errors, memory card writing errors when writing image data obtained by shooting (hereinafter referred to as errors related to shooting) When a shooting error occurs), system information and shooting information are selected and written in the error information memory 41 as operation related information. When an error other than that occurs, only system information is selected as operation related information and is written in the error information memory 41.
[0065]
The shooting information includes shooting operation related information and shot image related information. As shown in FIG. 13, the shooting operation related information is information indicating setting contents and states related to the shooting operation at the time of shooting. For example, the flash emission mode, zoom position, shooting, and the like that are set at the time of shooting. It includes items such as the exposure state at the time and the in-focus state of the taking lens 3.
[0066]
The captured image related information is information related to an image captured when an error occurs, and as shown in FIG. 14, the captured image related information is used for a file name given to the image data recorded after shooting or for shooting. There are items such as shutter speed, aperture value, and parameters used for white balance adjustment.
[0067]
Thus, by selectively recording the operation related information according to the error contents, necessary information can be recorded without excess and deficiency, and error analysis and repair can be facilitated.
[0068]
Note that the items of the shooting operation related information and the shot image related information shown in FIGS. 13 and 14 are examples, and the items can be appropriately set according to the specification, configuration, etc. of the electronic camera. For example, when the exposure control mode such as auto / manual / shutter speed priority / aperture priority can be selected as shooting operation related information, the selected exposure control mode item, shutter speed and aperture value are manually set. If possible, an item for the set value can be added. In addition to the system information and shooting information, for example, settings related to playback and information related to a playback image may be selected as operation-related information when a playback error occurs.
[0069]
【The invention's effect】
As described above, according to the present invention, when an error is detected, the content of the error that occurred, the operation content stored immediately before the error occurred, and the operation of the camera when the error occurred are related. Since the operation-related information to be recorded is recorded in the non-volatile error information memory, failure determination, error analysis, and repair can be easily performed.
[Brief description of the drawings]
FIG. 1 is a front view showing the front of an electronic camera embodying the present invention.
FIG. 2 is a rear view showing a rear surface of the electronic camera.
FIG. 3 is a block diagram illustrating a configuration of an electronic camera.
FIG. 4 is a table showing an example of operation codes.
FIG. 5 is a table showing an example of a code corresponding to an operation content.
FIG. 6 is an explanatory diagram showing the contents of error information recorded in an error information memory.
FIG. 7 is a table showing an example of an error code.
FIG. 8 shows an example of system information recorded as operation-related information.
FIG. 9 is a flowchart showing a procedure for recording error information.
FIG. 10 is an explanatory diagram showing an example of recording a plurality of error information.
FIG. 11 is a flowchart illustrating an example of performing error reproduction.
FIG. 12 shows an example of selecting operation related information.
FIG. 13 is a table showing an example of photographing operation related information.
FIG. 14 is a table showing an example of captured image related information.
[Explanation of symbols]
10 Memory card
20 System controller
21 Operation unit
25 CCD image sensor
40 History memory
41 Error information memory

Claims (8)

In an electronic camera that records image data obtained by photographing a subject on a recording medium,
When an error is detected by an operation history storage unit that stores operation contents according to the operation of the operation unit in time series, an error detection unit that detects occurrence of an error, a nonvolatile information memory, and an error detection unit Recording control means for recording in the error information memory the content of the error that has occurred, the operation content immediately before the occurrence of the error stored in the operation history storage means, and the operation related information relating to the operation of the camera at the time of the error occurrence An electronic camera characterized by comprising: The electronic camera according to claim 1, wherein the operation history storage unit records an operation time together with an operation content. 3. The electronic camera according to claim 1, wherein the recording control unit selects operation-related information based on the content of the error that has occurred and records it in the error information memory. 4. An error reproduction means for operating each part of the camera based on the operation content recorded in the error information memory and the operation related information in order to reproduce an error. The electronic camera according to Item 1. The error information memory can record operation contents and operation-related information corresponding to a plurality of errors, and the error reproduction means is an error designated from outside among the plurality of errors recorded in the error information memory. The electronic camera according to claim 4, wherein an error is reproduced based on the operation content and the operation related information corresponding to. 6. The electronic camera according to claim 4, wherein the error reproduction means performs an error reproduction operation in response to a specific operation being performed from the outside. The error reproduction means obtains an operation state and a set state at the time when an operation for error reproduction should be started according to the operation content, based on the operation related information recorded in the error information memory, and the obtained operation 7. The electronic camera according to claim 4, wherein the operation of each part of the camera is sequentially performed based on the operation content recorded after changing to the state and the setting state. 8. The display device according to claim 4, further comprising a display unit that displays contents of an error that has occurred when an error occurs and displays error information corresponding to the error that is being reproduced when the error is reproduced. Electronic camera.

Images