JP2008072514A - Image reproduction device and control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide information display so that a user can easily understand information regarding classification of an image file in image display after retrieval. <P>SOLUTION: This image reproduction device which classifies a plurality of image files recorded in a recording medium based on classification information to be displayed makes a user specify the classification information as a retrieval key, retrieves an image file to which the same classification information as the classification information specified as the retrieval key is added from the plurality of files recorded in the recording medium and displays the retrieved image file on a display screen. At this time, display representing the classification information specified as the retrieval key is displayed on a first position on the display screen with display of the retrieved image file. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image playback apparatus suitable for a digital camera or the like and a control method thereof.

  In recent years, memory cards, which are often used as recording media for digital cameras and other portable terminals, have become popular due to the increase in capacity and price, so that many users can easily carry large amounts of image files. became. Along with this, there is an increasing demand for sorting and displaying a large number of image files with a simple operation. In particular, if the image files can be classified and displayed with a simple operation on a relatively small number of operation members such as a digital camera or a mobile phone or a small display screen instead of software on a PC, the user can organize the image data while staying outside. Is very useful.

  In addition, if only image data belonging to a specific category can be selected and displayed from the classified image files, the user can use various usages as a viewer of a mobile terminal, such as a slide show showing only images of a specific category. Can be presented. For example, it is possible to present a slide show showing only a child's growth record or a slide show showing only images of the previous trip.

For example, as such a technique, Patent Document 1 discloses an image display device that classifies images into folders and displays thumbnails of images included in the folder simultaneously with the folders. According to this image display device, the user can immediately recognize which image is classified into which folder.
Japanese Patent Laid-Open No. 2005-039486

  In the image display device described in Patent Document 1, a folder is designated and only image files included in the folder are narrowed down and reproduced one by one. However, in this case, for example, when a large number of images are reproduced in order, there is a possibility that it may not be understood what sort of classification information the display image is divided. In addition, it is very useful to add a plurality of classification information (for example, “travel” and “children”) to one image file, and then search for an image file including specific classification information. However, since the image display device of Patent Document 1 always classifies it into one folder, it is impossible to realize such an image reproduction process.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an information display that allows a user to easily grasp information related to the classification of the image file in an image display after a search.

In order to achieve the above object, an image reproducing apparatus according to the present invention comprises the following arrangement. That is,
An image reproduction device for classifying and displaying a plurality of image files recorded on a recording medium based on classification information added to the image file,
A specifying means for specifying classification information as a search key;
Search means for searching an image file to which the same classification information as the classification information specified in the search key by the specifying means is added from a plurality of image files recorded on the recording medium;
Display image means searched for by the search means on a display screen, and display control means for displaying a display representing the classification information designated by the search key at a first position on the display screen.

In order to achieve the above object, a method for controlling an image reproducing apparatus according to the present invention includes:
A method for controlling an image reproducing apparatus for classifying and displaying a plurality of image files recorded on a recording medium based on classification information added to the image file,
A specification process for specifying classification information as a search key;
A search step for searching an image file to which the same classification information as the classification information specified by the search key in the specifying step is added from a plurality of image files recorded on the recording medium;
A display control step of displaying the image file searched by the search step on a display screen and displaying a display representing the classification information designated by the search key at a first position on the display screen.

  According to the display device of the present invention, it is possible to add and classify a plurality of classification information to image data, and display the classification information when displaying the classified image. For this reason, in the image display after the search, the user can easily grasp information related to the classification of the image file.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the embodiments described below, a case where the apparatus and method according to the present invention are applied to an imaging apparatus which is a digital camera capable of capturing still images and moving images will be described as an example.

[Digital camera configuration]
FIG. 1 is an external view of a digital camera according to an embodiment. In FIG. 1, reference numeral 28 denotes a display unit that displays images and various types of information. Reference numeral 72 denotes a power switch that switches between power on and power off. Reference numeral 61 denotes a shutter button. Reference numeral 60 denotes a mode switching switch for switching various modes in the digital camera 100. More specifically, it is possible to switch modes such as a still image recording mode, a moving image recording mode, and a reproduction mode. A connection cable 111 connects the digital camera 100 and an external device. A connector 112 connects the connection cable 111 and the digital camera 100.

  Reference numeral 70 denotes an operation unit that accepts various operations from the user. The operation unit 70 includes various buttons illustrated and operation members such as a touch panel provided on the screen of the image display unit 28. Specific examples of the buttons of the operation unit 70 include an erase button, a menu button, a SET button, a four-direction button (up button, down button, right button, left button) arranged in a cross, a wheel 73, and the like. is there. Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. A recording medium slot 201 stores the recording medium 200. The recording medium 200 stored in the recording medium slot 201 can communicate with the digital camera 100. Reference numeral 202 denotes a lid of the recording medium slot 201.

  FIG. 2 is a block diagram illustrating a configuration example of the digital camera 100 according to the present embodiment. In FIG. 2, reference numeral 103 denotes a photographing lens, 101 denotes a shutter having a diaphragm function, and 22 denotes an imaging unit including a CCD or a CMOS element that converts an optical image into an electrical signal. Reference numeral 23 denotes an A / D converter that converts an analog signal into a digital signal. The A / D converter 23 is used when an analog signal output from the imaging unit 22 is converted into a digital signal, or when an analog signal output from the audio control unit 11 is converted into a digital signal. A barrier 102 covers the imaging unit including the lens 103 of the digital camera 100 to prevent the imaging system including the imaging lens 103, the shutter 101, and the imaging unit 22 from being dirty or damaged.

  A timing generation unit 12 supplies a clock signal and a control signal to the imaging unit 22, the audio control unit 11, the A / D converter 23, and the D / A converter 13. The timing generator 12 is controlled by the memory controller 15 and the system controller 50. An image processing unit 24 performs resize processing such as predetermined pixel interpolation and reduction and color conversion processing on the data from the A / D converter 23 or the data from the memory control unit 15. The image processing unit 24 performs predetermined calculation processing using the captured image data, and the system control unit 50 performs exposure control and distance measurement control based on the obtained calculation result. Thereby, AF (autofocus) processing, AE (automatic exposure) processing, and EF (flash pre-emission) processing of the TTL (through-the-lens) method are performed. The image processing circuit 24 further performs predetermined arithmetic processing using the captured image data, and also performs TTL AWB (auto white balance) processing based on the obtained arithmetic result.

  Output data from the A / D converter 23 is written into the memory 32 via the image processing unit 24 and the memory control unit 15 or directly via the memory control unit 15. The memory 32 stores image data obtained by the imaging unit 22 and converted into digital data by the A / D converter 23 and image data to be displayed on the image display unit 28. Note that the memory 32 is also used to store audio data recorded by the microphone 10, a still image, a moving image, and a file header when configuring an image file. Therefore, the memory 32 has a storage capacity sufficient to store a predetermined number of still images, a moving image and sound for a predetermined time.

  The compression / decompression unit 16 compresses and decompresses image data by adaptive discrete cosine transform (ADCT) or the like. The compression / decompression unit 16 reads a captured image stored in the memory 32 using the shutter 101 as a trigger, performs compression processing, and writes the processed data in the memory 32. Further, the compressed image read into the memory 32 from the recording unit 19 or the like of the recording medium 200 is expanded, and the processed data is written into the memory 32. The image data written to the memory 32 by the compression / decompression unit 16 is filed in the file unit of the system control unit 50 and recorded on the recording medium 200 via the interface 18. The memory 32 also serves as an image display memory (video memory). A D / A converter 13 converts image display data stored in the memory 32 into an analog signal and supplies the analog signal to the image display unit 28. Reference numeral 28 denotes an image display unit, which performs display in accordance with an analog signal from the A / D converter 13 on a display such as an LCD. Thus, the display image data written in the memory 32 is displayed by the image display unit 28 via the D / A converter 13.

  Reference numeral 10 denotes a microphone. The audio signal output from the microphone 10 is supplied to the A / D converter 23 via the audio control unit 11 configured by an amplifier or the like, converted into a digital signal by the A / D converter 23, and then subjected to memory control. The data is stored in the memory 32 by the unit 15. On the other hand, the audio data recorded on the recording medium 200 is read into the memory 32 and then converted into an analog signal by the D / A converter 13. The voice control unit 11 drives the speaker 39 by this analog signal and outputs a voice.

  The nonvolatile memory 56 is an electrically erasable / recordable memory, and for example, an EEPROM or the like is used. The nonvolatile memory 56 stores constants, programs, and the like for operating the system control unit 50. Here, the program is a program for executing various flowcharts described later in the present embodiment.

  Reference numeral 50 denotes a system control unit that controls the entire digital camera 100. The system control unit 50 implements each process of the present embodiment to be described later by executing the program recorded in the nonvolatile memory 56 described above. A system memory 52 is a RAM. In the system memory 52, constants and variables for operation of the system control unit 50, programs read from the nonvolatile memory 56, and the like are expanded.

  The mode switch 60, the first shutter switch 62, the second shutter switch 64, and the operation unit 70 are operation means for inputting various operation instructions to the system control unit 50.

  The mode switch 60 can switch the operation mode of the system control unit 50 to any one of a still image recording mode, a moving image recording mode, a reproduction mode, and the like. The first shutter switch 62 is turned on while the shutter button 61 provided in the digital camera 100 is being operated (half-pressed) to generate a first shutter switch signal SW1. The system control unit 50 starts operations such as AF (auto focus) processing, AE (auto exposure) processing, AWB (auto white balance) processing, and EF (flash pre-emission) processing in response to the first shutter switch signal SW1.

  The second shutter switch 64 is turned on when the operation of the shutter button 61 is completed (fully pressed) and generates a second shutter switch signal SW2. In response to the second shutter switch signal SW2, the system control unit 50 starts a series of shooting processing operations from reading a signal from the imaging unit 22 to writing image data on the recording medium 200.

  Each operation member of the operation unit 70 is appropriately assigned a function for each scene by selecting and operating various function icons displayed on the image display unit 28, and functions as various function buttons. Examples of the function buttons include an end button, a return button, an image advance button, a jump button, a narrowing button, and an attribute change button. For example, when the menu button is pressed, a menu screen on which various settings can be made is displayed on the image display unit 28. The user can make various settings intuitively using the menu screen displayed on the image display unit 28, the four-way button, and the SET button. The power switch 72 switches between power on and power off.

  A power control unit 80 includes a battery detection circuit, a DC-DC converter, a switch circuit that switches a block to be energized, and the like, and detects whether or not a battery is attached, the type of battery, and the remaining battery level. Further, the power control unit 80 controls the DC-DC converter based on the detection result and an instruction from the system control unit 50, and supplies a necessary voltage to each unit including the recording medium 200 for a necessary period.

  A power supply unit 30 includes a primary battery such as an alkaline battery or a lithium battery, a secondary battery such as a NiCd battery, a NiMH battery, or a Li battery, an AC adapter, or the like. Reference numerals 33 and 34 denote connectors, which connect the power supply unit 30 and the power supply control unit 80.

  Reference numeral 40 denotes an RTC (Real Time Clock), which measures the date and time. The RTC 40 has a power supply unit therein separately from the power supply control unit 80, and keeps counting time even when the power supply unit 30 has been turned off. The system control unit 50 sets a system timer using the date and time acquired from the RTC 40 at the time of activation, and executes timer control.

  Reference numeral 18 denotes an interface with a recording medium 200 such as a memory card or a hard disk. Reference numeral 35 denotes a connector for connecting the recording medium 200 and the interface 18. A recording medium attachment / detachment detection unit 98 detects whether or not the recording medium 200 is attached to the connector 35.

  Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. The recording medium 200 includes a recording unit 19 composed of a semiconductor memory, a magnetic disk, and the like, an interface 37 with the digital camera 100, and a connector 36 for connecting the recording medium 200 and the digital camera 100.

  The communication unit 110 performs various communication processes such as RS232C, USB, IEEE1394, P1284, SCSI, modem, LAN, and wireless communication. A connector (antenna in the case of wireless communication) 112 connects the digital camera 100 to another device via the communication unit 110.

[Overall operation of digital camera]
FIG. 3 is a flowchart for explaining the overall operation of the digital camera 100 of the present embodiment.

  When the power switch 72 is operated to turn on the power, the system control unit 50 initializes flags, control variables, and the like in step S301. Subsequently, in step S302, management processing relating to the file recorded on the recording medium 200 is started. The file management process in step S302 will be described later with reference to FIG. 30A.

  Next, in steps S303, S305, and S307, the system control unit 50 determines the set position of the mode switch 60. If the still image recording mode has been set, the process proceeds from step S303 to step S304 to execute still image recording mode processing. Details of the still image recording mode processing in step S304 will be described later with reference to FIG. If the mode switch 60 is set to the moving image recording mode, the process proceeds to step S306 through steps S303 and S305, and the moving image recording mode process is executed. The moving image recording mode process in step S306 will be described later with reference to FIG. If the mode selector switch 60 is set to the playback mode, the process proceeds to step S308 through steps S303, S305, and S307, and the playback mode process is executed. The reproduction mode process in step S308 will be described later with reference to FIG.

  If another mode has been set, the process proceeds to step S309, and the system control unit 50 executes a process according to the selected mode. Other modes include, for example, a transmission mode process for transmitting a file stored in the recording medium 200, and a reception mode process for receiving a file from an external device and storing it in the recording medium 200. Among these, the reception mode process will be described later with reference to FIG.

  After executing the process corresponding to the mode set by the mode switch 60 among steps S304, S306, S308, and S309, the process proceeds to step S310. In step S310, the system control unit 50 determines the set position of the power switch 72. If the power switch 72 is set to power on, the process returns to step S303. On the other hand, if the power switch 72 is set to power off, the process proceeds from step S310 to step S311 and the control unit 50 performs an end process. The termination process includes, for example, the following process. That is, the display of the image display unit 28 is changed to an end state, the lens barrier 102 is closed to protect the imaging unit, parameters, setting values, and setting modes including flags and control variables are recorded in the nonvolatile memory 56, Shut off the power to parts that do not require power supply. When the termination process of step S311 is completed, this process is terminated, and the power is turned off.

[Still image recording mode processing (S304)]
FIG. 4 is a flowchart showing still image recording mode processing in step S304 of FIG. Note that the still image recording mode process shown in FIG. 4 is terminated by an interrupt process or the like when the mode switch 60 switches to another mode or when the power switch 72 is set to OFF. And

When starting the still image recording mode, the system control unit 50 determines the shooting mode in step S401. To confirm the shooting mode,
(1) Acquire the shooting mode at the end of the previous still image recording mode from the non-volatile memory 56 and store it in the system memory 52, or
(2) When the operation unit 70 is operated by the user and a shooting mode setting is input, the setting and input shooting mode is stored in the system memory 52. Here, the shooting mode is a mode realized by combining a shutter speed, an aperture value, a flash emission state, sensitivity setting, and the like suitable for a shooting scene. The digital camera 100 of the present embodiment has the following shooting modes.

Auto mode: A mode in which various parameters of the camera are automatically determined by a program incorporated in the digital camera 100 based on the measured exposure value.
-Manual mode: A mode that allows users to freely change various camera parameters.
Scene mode: A combination of shutter speed, aperture value, strobe lighting, sensitivity settings, etc., suitable for the shooting scene is set automatically.

The scene mode includes the following modes.
・ Portrait mode: A mode specialized in portrait photography by blurring the background and making people stand out.
・ Night scene mode: A mode specialized for night scenes, which records the background with a slow shutter speed by applying flashlight to a person.
・ Scenery mode: A mode specialized for a wide landscape scene.
・ Night & Snap mode: Mode suitable for taking beautiful night scenes and people without a tripod.
・ Kids & Pet Mode: A mode that allows you to take pictures of kids and pets that move around without missing a photo opportunity.
-Fresh green & autumn leaves mode: A mode suitable for shooting trees and leaves of fresh green vividly,
-Party mode: A mode that shoots in a color faithful to the subject while suppressing camera shake under a fluorescent light bulb.
・ Snow mode: A mode in which a person does not darken even when the snowy landscape is in the background, and leaves no blue.
・ Beach mode: A mode that allows people to shoot without darkness even on the sea or sandy beaches where sunlight is strongly reflected.
・ Fireworks mode: A mode for shooting fireworks with optimal exposure. ・ Aquarium mode: A mode for setting sensitivity, white balance, and color suitable for shooting fish in an indoor aquarium.
・ Underwater mode: A mode in which the white balance is set to be optimal for underwater, and the image is shot with a tint of blue.

  In step S402, when the shooting mode is determined in step S401, the system control unit 50 subsequently performs a through display for displaying the image data from the imaging unit 22. Subsequently, in step S <b> 403, the system control unit 50 has a problem in the operation of the digital camera 100 due to the remaining capacity of the power source 30 configured by a battery or the like using the power source control unit 80, the presence or absence of the recording medium 200, It is determined whether or not there is. If there is a problem, in step S404, a predetermined warning is displayed by an image or sound using the image display unit 28, and the process returns to step S401.

  If there is no problem with the state of the power supply 30 or the recording medium 200, the system control unit 50 performs automatic setting of classification information on / off as necessary in step S405. The automatic grant on / off setting can be arbitrarily set by the user on a menu screen (not shown) displayed on the image display unit 28 by pressing a menu button included in the operation unit 70. The classification information automatic setting on / off setting is a flag indicating whether or not classification information is automatically added according to the scene mode and subject condition, and the setting value (flag ON / OFF value) is held in the system memory 52. In this way, by providing automatic setting on / off of classification information, it is possible to prevent unintended classification information from being given by the user from time to time. The classification information will be described later.

  Subsequently, in step S406, the system control unit 50 performs face detection for detecting whether a human face is present in the through-displayed image signal. This face detection process will be described later with reference to FIG. When a human face is detected in the face detection process, the system control unit 50 uses the position coordinates, size (width, height), number of detections, reliability coefficient, etc. detected in the image signal as face information. Store in the memory 52. When a face is not detected in the face detection process, 0 is set in areas such as position coordinates, size (width, height), detected number, reliability coefficient, etc. in the system memory 52.

  Subsequently, in step S407, the system control unit 50 determines whether or not the first shutter switch signal SW1 is ON. If the first shutter switch signal SW1 is OFF, the process returns to step S405, and steps S405 and S406 are repeated. On the other hand, if the first shutter switch signal SW1 is ON, the process proceeds to step S408. In step S <b> 408, the system control unit 50 performs a distance measurement process to focus the photographing lens 103 on the subject, and performs a light measurement process to determine an aperture value and a shutter time (shutter speed). In the photometric process, a flash is set if necessary. At this time, if a face is detected in step S406, distance measurement can be performed within the detected face range.

  Next, in steps S409 and S410, ON / OFF states of the first shutter switch signal SW1 and the second shutter switch signal SW2 are determined. If the second shutter switch signal SW2 is turned on while the first shutter switch signal SW1 is turned on, the process proceeds from step S409 to step S411. When the first shutter switch signal SW1 is turned off (when the second shutter switch signal SW2 is not turned on and the first shutter switch signal SW1 is also released), the process returns from step S410 to step S405. Further, while the first shutter switch signal SW1 is ON and the second shutter switch signal SW2 is OFF, the processes of steps S409 and S410 are repeated.

  When the second shutter switch SW2 is pressed, in step S411, the system control unit 50 sets the display state of the image display unit 28 from the through display to the fixed color display state. In step S412, the system control unit 50 executes shooting processing including exposure processing and development processing. In the exposure process, the image data obtained through the image sensor 22 and the A / D converter 23 is transferred via the image processing circuit 24 and the memory control circuit 15 or directly from the A / D converter 23. 15 to the memory 32. In the development process, the system control unit 50 reads out the image data written in the memory 32 using the memory control circuit 15 and, if necessary, the image processing circuit 24 and performs various processes. Details of this photographing process will be described later with reference to FIG.

  Next, in step S413, the system control unit 50 performs a REC review display of the image data obtained by the photographing process on the image display unit 28. Rec review is a process of displaying image data on the image display unit 28 for a predetermined time (review time) before recording on a recording medium after shooting of a subject for confirmation of a shot image. After the REC review display, in step S414, the system control unit 50 executes a recording process for writing the image data obtained by the photographing process into the recording medium 200 as an image file. Details of this recording process will be described later with reference to FIG.

  When the recording process in step S414 ends, in step S415, the system control unit 5 determines the ON / OFF state of the second shutter switch signal SW2. If the second shutter switch signal SW2 is ON, the determination in step S415 is repeated, and the process waits for the second shutter switch signal SW2 to be OFF. During this time, the display of the REC review is continued. That is, when the recording process in step S414 is completed, the REC review display on the image display unit 28 is continued until the second shutter switch signal SW2 is released. With this configuration, the user can carefully check the captured image data using the REC review by continuing to fully press the shutter button 61.

  After the user has taken a picture with the shutter button 61 fully pressed, the process proceeds from step S415 to step S416 when the fully pressed state is released by releasing the shutter button 61 or the like. In step S416, the system control unit 50 determines whether a predetermined review time has elapsed. If the review time has elapsed, the system control unit 50 proceeds to step S417. In step S417, the system control unit 50 returns the display state of the image display unit 28 from the REC review display to the through display state. With this process, after the captured image data is confirmed by the REC review display, the display state of the image display unit 28 is automatically switched to a through display state in which the image data from the imaging unit 22 is sequentially displayed for the next shooting. become.

  In step S418, the system control unit 50 determines whether the first shutter switch signal SW1 is ON / OFF. If the first shutter switch signal SW1 is ON, the process proceeds to step S409. If the first shutter switch signal SW1 is OFF, the process proceeds to step S405. return. That is, when the half-pressed state of the shutter button 61 is continued (the first shutter switch signal SW1 is ON), the system control unit 50 prepares for the next shooting (step S409). On the other hand, if the shutter button 61 has been released (the first shutter switch signal SW1 is OFF), the system control unit 50 ends the series of shooting operations and returns to the shooting standby state (step S405).

[Face Detection Processing (S406)]
Next, an example of the face detection process in step S406 in FIG. 4 will be described with reference to FIG. In step S <b> 501, the system control unit 50 sends the image data to be detected to the image processing unit 24. In step S502, the image processing unit 24 applies a horizontal bandpass filter to the image data under the control of the system control unit 50. In step S503, under the control of the system control unit 50, the image processing unit 24 applies a vertical bandpass filter to the image data processed in step S502. By these horizontal and vertical band pass filters, edge components are detected from the image data.

  Thereafter, in step S504, the system control unit 50 performs pattern matching on the detected edge component, and extracts a candidate group of eyes, nose, mouth, and ear. In step S505, the system control unit 50 selects an eye candidate from the eye candidate group extracted in step S504 that satisfies a preset condition (for example, distance between two eyes, inclination, etc.). If there is a pair of eyes, the candidate group is narrowed down. In step S506, the system control unit 50 associates the candidate group of eyes narrowed down in step S505 with other parts (nose, mouth, and ears) that form a face corresponding to the candidate group. A face is detected by passing the face condition filter. In step S507, the system control unit 50 outputs the face information according to the face detection result in step S506, and ends the process.

  As described above, it is possible to detect subject information by extracting feature amounts of image data using image data displayed in through display. In the present embodiment, face information is taken as an example of subject information, but the subject information includes various other information such as red-eye determination.

[Shooting Process (S412)]
FIG. 6 is a flowchart showing the photographing process in step S412 of FIG.

  In step S <b> 601, the system control unit 50 acquires the date and time from the system timer at the start of shooting and stores it in the system memory 52. In step S602, the shutter 101 having an aperture function is opened according to the aperture value in accordance with the photometric data stored in the system memory 52. Thus, exposure of the image sensor 22 is started (step S603).

  In step S604, the system control unit 50 waits for the exposure of the imaging unit 22 to end according to the photometric data. When the exposure end time is reached, the system control unit 50 closes the shutter 101 in step S605. In step S606, the charge signal is read out from the imaging unit 22, and the A / D converter 23, the image processing circuit 20, the memory control circuit 22, or the A / D converter 23 directly through the memory control circuit 22. The image data is written into the memory 32. As described above, steps S601 to S606 correspond to the exposure process.

  Subsequently, in step S607, the system control unit 50 reads the image data written in the memory 32 using the memory control circuit 15 and, if necessary, the image processing circuit 24, and sequentially performs image processing. This image processing includes, for example, white balance processing and compression processing using the compression / decompression unit 16. The processed image data is written into the memory 32. In step S608, the system control unit 50 reads out the image data from the memory 32, expands the image data using the compression / expansion unit 16, and resizes the image data for display on the image display unit 28. Then, the resized image data is transferred to the D / A converter 13 for display on the image display unit 28 via the memory control circuit 15. When a series of processing is finished, the photographing processing is finished.

[Regarding Recording Process (S414)]
FIG. 7 is a flowchart showing recording processing of image data generated in the photographing sequence in step S414 in FIG.

  When the recording process is started, in step S701, the system control unit 50 generates a file name for the image data to be recorded in accordance with a file name generation rule described later with reference to FIG. Next, in step S702, the date and time information stored in the system memory 52 in step S601 is acquired. In step S703, the data size of the image data to be recorded is acquired.

  In step S <b> 704, the system control unit 50 determines whether or not the recording medium 200 has a directory in which an image file generated from the image data is to be stored. If the directory does not exist, the process proceeds to step S705. In step S705, the system control unit 50 generates a directory for storing image files. The directory name generation rule will be described later with reference to FIG. Here, 100OANON (502 in FIG. 9) is created.

  Subsequently, in step S706, the system control unit 50 generates a file header including the shooting date and time, shooting conditions, and the like for the image data stored in the memory 32 in step S607 of the shooting process (FIG. 6). To do. The header generation process will be described later with reference to FIG. The configuration of the image file generated as described above will be described later with reference to FIG. After completing the header generation, in step S707, the system control unit 50 generates a directory entry from the file name acquired in step S701, the date information acquired in step S702, and the data size acquired in step S703, and records the image file. Recording on the medium 200 ends the recording process.

[About Header Generation Processing (S706)]
FIG. 8 is a flowchart of the header generation process in step S706 of FIG. 7 described above.

  When the header generation is started, in step S801, the system control unit 50 acquires the setting value of the automatic addition / deletion setting of the classification information set in step S405 (FIG. 4) from the system memory 52, and converts it into captured image data. It is determined whether or not the classification information is automatically given. If the setting value of the automatic assignment on / off setting of the classification information is “OFF” and automatic assignment is not performed, the process proceeds to step S809.

  If the setting value of the automatic assignment on / off setting of the classification information is “ON” in the determination in step S801, and it is determined that the classification information is to be automatically added, the process proceeds to step S802. In step S802, the system control unit 50 reads the face information held in the system memory 52 in the face detection process in step S406, and determines whether a face has been detected. If it is determined that the face is detected by the face information, the process proceeds to step S804, and the classification information “person” is added. If it is not determined in step S802 that a face has been detected, the process proceeds to step S803. In step S <b> 803, the system control unit 50 refers to the scene mode at the time of image capture stored in the system memory 52. In step S803, it is determined whether or not the scene mode corresponds to any one of “portrait mode”, “night snap mode”, and “kids & pet mode”, which is presumed to be a person shooting. If so, the process proceeds to step S804. In step S804, the system control unit 50 assigns the classification information “person” to the image data. If the classification information “person” is assigned in step S804, and if it is determined in step S803 that the scene mode does not correspond to any of the above, the process proceeds to step S805.

  As described above, in steps S802 to S804, “person” that is the same classification information is assigned from both the face information that is subject information and the scene mode that is the setting condition of the camera at the time of shooting. The subject information and the setting conditions of the camera at the time of shooting are different parameters at the time of shooting, but may have the same meaning depending on the contents after shooting. In the above, the face information, which is subject information, and the “portrait mode / night snap mode / kids & pet mode”, etc., which are the camera setting conditions at the time of shooting, are both the same as “it is assumed that a person has been shot” It has implications. Therefore, by adding the same classification information to the image data having such information, the convenience of the operation after the photographing (search operation or the like) is improved. In other words, by assigning the same classification information using both the specific subject information and the camera setting conditions at the time of specific shooting, it is suitable for post-shooting operations such as search, which are different from the parameters at the time of shooting. Classification information can be given, and convenience can be improved.

  In addition, according to the above classification information adding process, the same classification information is assigned to a plurality of different scene modes, such as portrait mode / night snap mode / kids & pet mode, for the classification information to be given from the scene mode. . Different scene modes have different camera setting conditions at the time of shooting, but some have the same meaning after shooting. The portrait mode / night snap mode / kids & pet mode listed here have the same meaning of “analogue that a person was photographed”. Therefore, by giving the same classification information to such a thing, convenience after photographing such as search is improved. In other words, by assigning the same classification information to a plurality of types of specific setting conditions among the camera setting conditions at the time of shooting, the classification is different from the parameters at the time of shooting and is suitable for operations after shooting such as searching. Information can be added, and the convenience of operation after shooting can be improved.

  In step S805, it is determined whether or not the scene mode corresponds to any of “fresh green & autumnal leaves mode”, “landscape mode”, and “fireworks mode”, which is presumed to be landscape shooting. The process proceeds to step S806. In step S806, the system control unit 50 assigns classification information “landscape” to the image data. If the classification information “landscape” is assigned in step S806, and if it is determined in step S805 that the scene mode is not any of the above, the process proceeds to step S807. In step S807, the scene mode is estimated to have taken an event, such as “party mode”, “snow mode”, “beach mode”, “fireworks mode”, “aquarium mode”, or “underwater mode”. It is determined whether or not this is true. If applicable, the process proceeds to step S808. In step S <b> 808, the system control unit 50 gives classification information “event” to the image data.

  In the above processing, two classification information of “landscape” and “event” is given to image data shot in the “fireworks mode”. That is, a plurality of pieces of classification information are given from one scene mode. Even if the setting conditions (scene mode) of the camera at the time of shooting are the same, there may be a plurality of meanings after shooting, and the “fireworks mode” is an example. In such a case, the system control unit 50 assigns a plurality of pieces of classification information according to the meaning after shooting. In this way, classification information suitable for post-shooting operations such as retrieval, which is different from the parameters at the time of shooting, can be given, and the convenience of post-shooting operations in the digital camera 100 can be improved. .

  It should be noted that classification information is not given in “auto mode”, “manual mode”, and other scene modes that are denied in any of the determinations in steps S803, S805, and S807.

  When the assignment of the classification information in the header is completed as described above, the process proceeds to step S809. In step S809, the system control unit 50 creates header information using shooting setting values such as classification information and shooting date / time information, and the processing is completed. If the setting value of the automatic addition / deletion setting of classification information is “OFF” in step S801, the setting of classification information (steps S802 to S808) is skipped, and header information without classification information is generated. Will be.

  As described above, image data is immediately collected in the playback mode without performing the sorting operation of the conventional image file that is classified while looking at the playback image data by adding the classification information used at the time of retrieval, etc. automatically at the time of shooting. Can be classified. Further, since the concept of classification is generated from both the camera setting conditions at the time of shooting and the subject information, it is possible to generate classification information more suitable for the concept after shooting such as when searching for image data.

  In the above description, several scene modes are given as examples of camera setting conditions at the time of shooting in which classification information is automatically given. However, the camera setting conditions at the time of shooting are not limited thereto. As another example of adding classification information according to the camera setting conditions at the time of shooting, if you are shooting in the distant view when shooting in manual mode, you can add the classification information of `` landscape '' by analogy that the landscape was shot good. If the self-timer is used for shooting, it may be possible to assign classification information of at least one of “person” or “event”. The subject information is also exemplified by face information, but is not limited to this, and red-eye determination information or the like may be used. For example, if red eyes are detected, classification information of “person” may be added. Further, the classification information automatically given is not limited to the three types of “person”, “event”, and “scenery” exemplified here as long as the user can use the information conveniently after shooting.

[About directory and file structure]
FIG. 9 shows an example of a directory structure recorded on the recording medium 200 as a result of the recording process described above. Hereinafter, the directory name and file name generation rules will be described with reference to FIG.

  A DCIM directory 501 is recorded in the root directory, and a subdirectory generated from eight characters is generated in the DCIM directory 501. The subdirectory name held by the subdirectory is composed of the first three letters. The first three numbers start at 100 and are incremented by 1 each time a directory is created. In FIG. 9, 100OANON 502 and 101OANON 503 are shown. Under the subdirectory 502, a file created by the digital camera 100 of the present embodiment is created. The file name generated here is composed of an 8-character file name and a 3-character extension indicating the file type. The last four characters of the file name are composed of numbers starting from 0001, and in the still image recording mode, a file name incremented by 1 is given for each shooting. Hereinafter, the number indicated by the last four characters is referred to as a file number. In the case of still images, JPG is added as an extension, and AVI is added as an extension to a moving image file recorded in the moving image recording mode. Further, THM is given as an extension to a thumbnail file for recording management information.

[File structure]
Next, FIG. 10 shows an example of the data structure of a still image file recorded on the recording medium 200 in the recording process described above.

The image file 701 has a marker (SOI) 702 indicating the start of the image file at the head, followed by an application marker (APP1) 703 corresponding to the header portion. In the application marker (APP1) 703,
・ Size (APP1 Length) 703,
・ Application marker identification code (APP1 Identifier Code) 705,
Image data creation date and time (Date Time) 706
Date and time (Date Time Original) 707 when the image data was generated
-Image data classification information 718,
・ Face information 719,
Consists of other shooting information 709 and the above-described thumbnail image (Thumbnail Data) 710.

  Here, as described above with reference to FIG. 8, the classification information 718 is information suitable for an operation after shooting such as search, which is different from the parameters at the time of shooting. As the classification information 718, “person”, “landscape”, and “event” described in FIG. Furthermore, classification information such as “category 1”, “category 2”, and “category 3” can be stored as general-purpose classification information. In addition, when image data is transferred to an external device such as a PC by the communication unit 110, classification information such as “for work” for prompting special processing such as mail transmission at the transfer destination can be stored in a playback mode described later. It has become. The classification information that is not automatically given by the processing of FIG. 8 is given to desired image data by a predetermined user operation described later. Further, the classification information automatically given at the time of photographing can be edited in a reproduction mode to be described later with reference to FIG.

  As described above, in addition to the classification information automatically given at the time of shooting, the classification information for slowly classifying while viewing the image data in the reproduction mode is given, so that classification with higher convenience is possible.

  The face information 719 is information generated by the above-described face detection process (S406 in FIG. 4), and detects the position coordinates, size (width, height), detected number, reliability coefficient, etc. of the detected face. As many as The image data recorded in the image file 701 includes a quantization table (DQT) 712, a Huffman table (DHT) 713, a frame start marker (SOF) 714, a scan start marker (SOS) 715, and compressed data 716. . Then, it is terminated with a marker (EOI) 717 indicating the end of the image file data.

[Movie Recording Mode Processing (S306)]
Next, the moving image recording mode process in step S306 in FIG. 3 will be described. When the mode changeover switch 60 is set to “moving image recording mode”, the system control unit 50 next determines the shooting mode. In this embodiment, description will be made assuming that the shooting mode in the moving image recording mode is the same as that in the still image recording mode. However, it is of course possible to employ a configuration having a shooting mode specialized for moving image shooting. FIG. 11 is a flowchart showing the moving image recording process of the digital camera 100 of the present embodiment. When the system controller 50 detects that the second shutter switch signal SW2 is ON in the moving image recording mode, the system control unit 50 starts moving image recording shown in FIG.

  First, in step S1101, the system control unit 50 sequentially stores the image data captured by the imaging unit 22 in the memory 32 at a predetermined frame rate. At the same time, the system control unit 50 stores the audio data obtained via the microphone 10, the audio control unit 11, and the A / D converter 23 in the memory 32. In this embodiment, digital data in the PCM format is assumed as audio data. Subsequently, in step S1102, the system control unit 50 performs image processing such as image size conversion for recording the file on the image data stored in the memory 32. In step S <b> 1103, compression processing is performed and the data is stored in the memory 32.

  Here, a storage format of moving image data to be recorded on the recording medium 200 is shown in FIG. A fixed-length header area 1201 including data such as a video frame rate and an audio sampling rate is arranged at the head of the data. Immediately after the header area 1201, a fixed-length audio data area 1202 for storing audio data of a predetermined recording unit (1 second in this embodiment) is arranged. The audio data is obtained by sampling the audio input to the microphone 10 into digital data through the audio control unit 11 and the A / D converter 23, and is stored in the memory 32. Frame data recorded at a predetermined frame rate immediately after the audio data area 1202 is sequentially stored in the memory (1203 to 1206). In this way, audio data and frame data are sequentially generated and stored in a predetermined recording unit, and moving image data is generated.

  When data for one second is accumulated as described above, in step S1104, the system control unit 50 stores the moving image data accumulated in the memory 32 in the recording medium 200 in parallel with the moving image and audio recording processing. The recording process for recording is started. The system control unit 50 repeats the processes in steps S1101 to S1104 until a moving image stop request is detected (step S1105). The moving image stop request is generated by re-detection of ON of the second shutter switch signal SW2, detection of lack of free space in the recording medium 200, or detection of lack of free space in the memory 32.

  FIG. 9 shows an example of the directory structure recorded on the recording medium 200 as a result of the recording process in the digital camera 100 as described above. A moving image file recorded in the moving image recording mode is given an extension AVI as shown in 515 and 517, and a thumbnail file for recording management information has an extension THM as shown in 516 and 518. Is granted.

  When the moving image recording process is stopped in response to the moving image stop request, the process proceeds from step S1105 to step S1106. In step S1106, the system control unit 50 writes the moving image data remaining in the memory 32 to the recording medium 200, and then records the index information 1218 storing the offset and size of each audio data / video data. In step S1107, the system control unit 50 generates header information such as the total number of frames. In step S1108, the system control unit 50 describes the total data size in the directory entry and records the information on the recording medium 200. Thus, the recording of the moving image file is completed. In step S1109, the management information of the moving image file is generated into a thumbnail file (for example, MVI_0005.THM (516)) having the same number as the moving image file name and having the extension THM. Hereinafter, the configuration of the thumbnail file and the generation / recording process will be described with reference to FIG.

[Thumbnail file structure and recording process]
A thumbnail file generated by moving image recording has the same file structure as shown in FIG. However, there is no area 710 for recording thumbnail data, and thumbnail images are recorded in compressed data 716.

The thumbnail file 701 has a marker (SOI) 702 indicating the start of an image at the head, and an application marker (APP1) 703 thereafter. In the application marker 703,
Size (APP1 Length) 703,
Application marker identification code (APP1 Identifier Code) 705,
Image data creation date and time (Date Time) 706,
Date and time (Date Time Original) 707 when the image data was generated
Image data classification information 718,
Face information 719,
It consists of other shooting information 709. Note that classification information can also be generated in moving image data by face detection processing or the like.

  The image data of the thumbnail file is a reduced image of the first frame at the start of moving image recording. The image data includes a quantization table (DQT) 712, a Huffman table (DHT) 713, a frame start marker (SOF) 714, a scan start marker (SOS) 715, and compressed data 716 corresponding to a reduced image. The image data is terminated with a marker (EOI) 717 indicating the end of the image data.

  Next, the thumbnail recording process (step S1109) will be described with reference to the flowchart of FIG.

  In step S1301, the system control unit 50 generates a thumbnail image. In the present embodiment, thumbnail images are generated by performing image processing such as converting the first frame of moving image data stored in the memory 32 to a predetermined image size. In step S1302, the compression / decompression unit 16 performs a compression process on the thumbnail image generated in step S1301. In step S1303, a header including the application marker 703 described with reference to FIG. 10 is generated. This processing is as described above with reference to FIG. When the generation of the header is completed, in step S1304, the system control unit 50 writes a thumbnail file including the header and thumbnail image data in the recording medium 200, and ends the thumbnail generation process.

[Reception Mode Processing (S309)]
Next, the reception mode process which is one of the processes in other modes in step S309 will be described. When the mode switch 60 of the digital camera 100 is switched to the reception mode, the reception process of FIG. 14 is performed. In the following, processing for receiving an image file from an external device (communication target device) and recording the image file on a recording medium will be described.

  In step S1401, the system control unit 60 confirms the presence of a communication target device. If it is determined that there is no communication target device, the reception process is terminated. If it is determined that there is a communication target device, the system control unit 60 determines whether there is a transmission request in step S1402. If it is determined that there is no transmission request, the process returns to step S1401, confirms the presence / absence of a communication target device, and waits for a transmission request.

  On the other hand, if it is determined that there is a transmission request, in step S1403, the system control unit 50 receives data from the communication target device through the communication unit 110, and temporarily stores the received data in the memory 32. In step S1404, the system control unit 50 writes the received data in the recording medium 200. At this time, if the classification information is included in the header portion of the received data, it is recorded in the recording medium 200 as it is. If the classification information is not included, new classification information is assigned by the same process as shown in FIG. May be. In this case, the camera setting conditions at the time of shooting are acquired with reference to the header portion of the received data. For example, face information 719 included in the header portion of the received data, shooting mode (scene mode) information included in other shooting information 709, and the like are referred to. The subject information may be acquired by referring to the header portion of the received data, or may be newly detected by analyzing the received image data. After the writing is completed, the process returns to step S1401, confirms the presence / absence of a communication target device again, and waits for a transmission request. If it is determined that there is no communication target device, the process is exited.

[Reproduction Mode Processing (S308)]
FIG. 15 is a flowchart for explaining the operation in the playback mode of the digital camera 100 of the present embodiment. The flowchart in FIG. 15 shows details of step S308 in FIG.

  In step S <b> 1501, the system control unit 50 acquires the latest image information from the recording medium 200. By obtaining the latest image information prior to calculating the total number of images and creating a search list, there is an advantage that images of those processes can be displayed quickly when the playback mode is entered. In step S1502, the system control unit 50 checks whether or not the latest image information has been correctly acquired in step S1501. If the latest image information could not be acquired, the process proceeds to step S1509. In step S1509, the system control unit 50 enters an input waiting state when there is no image. The processing in step S1509 will be described later with reference to the flowchart of FIG. Note that the case where the latest image information cannot be acquired includes a state where there is no image, a state where the image information cannot be acquired due to media failure, and the like. If the latest image information can be acquired, it is determined that at least one image exists, and the process advances to step S1503.

  In step S1503, the system control unit 50 reads the latest image data from the recording medium 200 based on the latest image information acquired in step S1501. In step S <b> 1504, the system control unit 50 performs file analysis processing, and acquires shooting information, attribute information, and the like of the image in the read latest image data. The file analysis process will be described later with reference to FIG. In step S1505, the system control unit 50 displays the read latest image data. Further, at this time, the photographing information and attribute information acquired in step S1504 are also displayed. Further, according to the file analysis result in step S1504, if it is known that the data is invalid, such as a part of the file is broken, an error display is also performed.

  In step S <b> 1506, the system control unit 50 starts a process for acquiring the total number of images recorded on the recording medium 200. The process in step S1506 operates in the background, and can proceed to the next process without waiting for the completion. In this way, even when a large amount of image data is stored in the recording medium 200 and it takes a long time to calculate the total number, it is possible to view the image without waiting for the completion of the calculation of the total number. become. This process is particularly effective when the image mode is newly recorded or deleted in the recording mode when the recording mode is changed to the reproduction mode and a difference occurs in the total number. When no new image data is recorded or deleted in the recording mode, the total number already calculated is used, so the total number calculation process does not have to be performed.

  Next, in step S1507, the system control unit 50 starts creating a search list. The search list is a list for previously acquiring and managing attribute information assigned to image data. By creating a search list in advance, processing such as reproduction and deletion for each attribute can be performed quickly. Since the search list creation process is executed in the background like the total number calculation, the next process can be executed without waiting for the completion. In step S1508, the system control unit 50 enters an input waiting state. The processing in this input waiting state will be described later with reference to the flowchart of FIG.

[Waiting for input when there is no image in playback mode processing (S1509)]
FIG. 16 is a flowchart showing processing in an input waiting state when there is no image in the reproduction mode.

  First, in step S1601, the system control unit 50 displays a message “no image” on the image display unit 28 to notify the user that there is no image data. Next, in step S1602, the system control unit 50 waits for an operation input. The operation input here includes a button operated by the user, an operation on the battery cover, an event for notifying a decrease in power, and the like. If there is any input, the process advances to step S1603, and the system control unit 50 checks whether the input is an end button. If it is determined that the button is an end button, the playback mode process is terminated, and the process proceeds to step S310 in FIG. On the other hand, if the operation input is other than the end button, the process proceeds to step S1604, and processing corresponding to the operation input is performed. For example, when menu button operation is input without image data, a menu is displayed on the image display unit 28 so that the user can change settings.

[Reproduction input waiting process in the reproduction mode process (S1508)]
FIG. 17 is a flowchart for explaining the process of waiting for input in the playback mode process.

  In step S1701, the system control unit 50 checks whether there is an operation input by the user. The operation input here includes a button operation by a user, an operation for a battery cover, an event for notifying a decrease in power, and the like. If there is no input, wait until there is an input. If there is any operation input, the process proceeds to step S1702.

  In step S <b> 1702, the system control unit 50 determines whether the operation input is an input of an image feed button included in the operation unit 70. If the operation input is an image advance button, the process advances to step S1703, and the system control unit 50 reads the next display image. The image feed button is composed of a pair of buttons corresponding to the feed direction, and the next display image is read according to the feed direction corresponding to the operated button. In step S1704, the system control unit 50 performs file analysis processing such as shooting information and attribute information on the image data read in step S1703. The file analysis process will be described later with reference to FIG. In step S1705, the system control unit 50 displays the image data read in step S1703. At this time, shooting information, attribute information, and the like are displayed using the result of the file analysis processing in step S1704. If it is determined that the data is invalid such as a part of the file is broken according to the file analysis result in step S1704, an error display is also performed. When the display is completed, the process returns to the input waiting state in step S1701.

  If it is determined in step S1702 that the input is not an image advance button, in step S1706, the system control unit 50 determines whether the operation input is an end button. If it is determined that the button is an end button, the process advances to step S1707, and the system control unit 50 ends the search list creation process. Here, if the search list is being created, the creation process is interrupted, and if the creation has already been completed, nothing is performed. Next, in step S1708, the system control unit 50 performs a total image number calculation end process. Similarly to the processing in step S1707, this processing is interrupted if the total number calculation is still in progress, and nothing is performed if it has already been completed. Then, the reproduction mode process is terminated, and the process proceeds to step S310 in FIG.

  If it is determined in step S1706 that the operation input is not an end button, the process proceeds to step S1709. In step S1709, the system control unit 50 checks whether the processing for calculating the total number of images started in step S1506 (FIG. 15) has been completed. If it has not been completed, the process returns to the operation input waiting state in step S1701. At this time, it may be possible to display a message or icon indicating that it has not been completed. With the above processing, the image advance operation by the image advance button and the end operation by the end button are executed without waiting for the completion of the image number calculation, but other operation input processes are ignored until the total image number calculation process is completed. Will be.

  If it is determined in step S1709 that the total number of images has been completed, the process proceeds to step S1710. In step S <b> 1710, the system control unit 50 determines whether the classification information setting menu is selected by operating the operation unit 70. If it is determined that the classification information setting menu has been selected, the process proceeds to step S1711, and the system control unit 50 executes the classification information setting mode process. The processing in the classification information setting mode will be described later with reference to FIGS. 25A and 25B. If the selection of the classification information setting menu is not selected in step S1710, the process proceeds to step S1712.

  In step S <b> 1712, the system control unit 50 checks whether the operation input is an operation of an erase button included in the operation unit 70. If it is determined that the operation input is an erase button, the process advances to step S1713. In step S <b> 1713, the system control unit 50 deletes the image data currently displayed on the image display unit 28. When the erasure of the image data is completed, the total number after erasure is checked in step S1714. If the total number is 0, the process advances to step S1715 to enter an input waiting state when there is no image. This processing is as described above with reference to FIG.

  On the other hand, if image data remains after erasure, the process advances to step S1716, and the system control unit 50 reads the next display target image data to display the next image data. Here, the image data to be displayed is the image data of the file number next to the file number of the erased image data. When the latest image data is erased, the image data of the file number one before the file number of the erased image data is displayed. In step S1717, the system control unit 50 performs file analysis processing on the image data read as a display target in step S1716, and obtains shooting information, attribute information, and the like. The file analysis process will be described later with reference to FIG. In step S1718, the system control unit 50 displays the image data read in step S1716 on the image display unit 28. At this time, the photographing information and attribute information acquired in step S1717 are also displayed. If it is determined that the data is invalid, such as part of the file is broken, according to the file analysis result in step S1717, an error display to that effect is also displayed. When the display is completed, the process returns to the operation input waiting state in step S1701.

  If the operation input is not a delete button in step S1712, the process advances to step S1719. In step S1719, the system control unit 50 checks whether the search list creation process started in step S1507 has been completed. If the search list creation process has not been completed, the process returns to the operation input waiting state in step S1701. At this time, as in the case where the total number calculation is not completed, a message or icon indicating that the search list creation process has not been completed may be displayed. By the above processing, operation input methods other than those described above are ignored until the total image number calculation processing is completed. Here, the processes described above are an image sending operation (S1702 to S1705), an end operation (S1706 to S1708), execution of a classification information setting mode (S1710, S1711), and an image erasing operation (S1712 to S1718).

  If it is determined in step S1719 that search list creation has been completed, the process proceeds to step S1720. In step S1720, the system control unit 50 determines whether the operation input is a jump instruction. If it is determined that the operation input is a jump instruction, the process proceeds to the jump mode in step S1721. The jump mode process will be described later with reference to FIGS. 19A to 19E.

  If the operation input is not a jump instruction, the process advances to step S1722, and the system control unit 50 determines whether the operation input is a selection operation. If it is determined that the operation input is a selection operation, the process proceeds to the selection operation in step S1723. The selection operation process will be described later with reference to FIGS. 27A, 27B, 28A to 28C, FIG. 29, and the like.

  If it is determined in step S1722 that the operation input is not a jump instruction, the process proceeds to step S1724. In step S1724, processing corresponding to the operation input other than the above is performed. For example, image editing processing, switching to multi-playback, menu display using menu buttons, and the like. Multi-reproduction is a reproduction mode in which a plurality of reduced images of image data are displayed side by side on one screen of the image display unit 28.

[About editing]
As one of the other processes in step S1724 in FIG. 17, it is possible to execute an editing process in which image size conversion is performed on the image file displayed on the image display unit 28 and a new image file is recorded. . Hereinafter, this editing process will be described with reference to the flowchart of FIG. In the following description, it is assumed that the file to be edited is IMG_0002.JPG (505).

  In step S1801, the system control unit 50 acquires the image file name (IMG_0002.JPG) of the image data being displayed on the image display unit 28. Next, in step S1802, the system control unit 50 reads image data corresponding to the acquired file name from the recording medium 200 into the memory 32. In step S1803, the system control unit 50 uses the compression / decompression unit 16 to perform decompression processing on the image data read in step S1802, and stores the decompressed image data in the memory 32. Subsequently, in step S1804, the system control unit 50 performs enlargement / reduction processing of the decompressed image data to a predetermined image size using the image processing unit 24, and stores the resized image in the memory 32. . Here, the system control unit 50 acquires the classification information of the original image file read in step S1802 and stores it in the system memory 52. By using a predetermined menu screen, the user can set the magnification in the enlargement / reduction process.

  In step S <b> 1807, the system control unit 50 once sets the setting value of the automatic assignment on / off setting of the classification information held in the system memory 52 to “OFF”. It should be noted that the original setting value of automatic on / off setting is recorded (saved) in another area of the system memory 52. In step S1809, the memory system control unit 50 generates a header for the edited image data. More specifically, the header portion of the original image file read into the memory 32 is copied, and an image file newly created using the header portion of the copied original image file is described with reference to FIG. Perform the generation process. Here, the automatic assignment on / off setting of the classification information is “OFF”, so the classification information is not automatically assigned. In addition, since the header is generated based on the copy of the header portion of the original image file, the classification information of the original image file is directly inherited by the newly created image file after editing. In addition, the area related to the image size, the items related to the creation date, and the like are changed as appropriate.

  After generating the header, in step S1810, the system control unit 50 restores the automatic assignment on / off setting of the classification information temporarily set to “OFF” to the setting value recorded (saved) in the system memory 52. With the above processing, generation of image data for a newly created image file is completed, and thus a newly created image file name is generated. In this example, IMG_0003.JPG is generated as the file name. In step S1812, the system control unit 50 writes the image file created as described above to the recording medium 200, and completes the editing process.

  As described above, even if an image file is edited to create a new image file, the classification information does not change before and after editing. By handing over the classification information automatically given when the original image data was taken or the classification information arbitrarily given by the user after editing, the edited image data can be operated with high convenience in searching and the like. .

[Processing in Jump Mode (S1721) (Part 1: Display of Operation Screen)]
Next, jump processing in the jump mode will be described. The jump process is a process of selecting specific attribute information, searching for and displaying image data to be displayed in units of the attribute information. That is, it is a process of jumping to an image file having specific attribute information. Specific examples of attribute information (hereinafter referred to as “jump key”) serving as a jump unit include a shooting date, classification information, a folder, and a moving image. For example, in the jump process (hereinafter referred to as date jump) when the shooting date is used as a jump key, for example, January 1, 2006, January 2, 2006,. The image data is classified into groups. Each time image feeding is performed by a user operation, image data representing each group is displayed one by one. That is, the image jump operation jumps to the representative image data for each shooting date. Note that the jump key does not have to be based on the attribute information, and can be selected in units of the number of sheets such as “display in units of 10” or “display in units of 100”.

  Next, the flow of jump processing will be described. FIG. 19A is a flowchart showing the process of step S1721 of FIG. 17, and is executed by the user performing an operation of transitioning to the jump mode.

  First, in step S1901, the system control unit 50 refers to the non-volatile memory 56 and determines whether or not the jump key selected last in the previous jump mode is stored. The jump key stored in the nonvolatile memory 56 will be described later. If it is determined that the jump key is stored, the system control unit 50 sets the jump key as the first jump key in step S1902. On the other hand, if it is determined that the jump key is not stored, the system control unit 50 sets the default jump key stored in the nonvolatile memory 56 as the first jump key in step S1903.

  Here, FIG. 20A shows an example of a screen displayed on the image display unit 28 when the mode is changed to the jump mode. Reference numeral 2003 denotes an image display area that displays image data that is currently displayed, and 2009 denotes an information display unit that displays group information. These two will be described later. Reference numeral 2001 denotes an area for displaying a list of jump keys (jump key list display). Icons indicating various jump keys are displayed in this area. An icon 2008 indicates a date jump. An icon 2002 indicates a jump process (hereinafter referred to as “classification jump”) using classification information as a jump key. Reference numeral 2004 denotes an icon indicating jump processing (hereinafter, “folder jump”) using the folder to which the image file belongs as a jump key. Reference numeral 2005 denotes an icon indicating jump processing (hereinafter referred to as “moving image jump”) using a moving image file as a jump key. An icon 2006 indicates that image feeding is performed in units of 10 sheets. Reference numeral 2007 denotes an icon indicating that image feeding is performed in units of 100 sheets. Among the jump keys, the icon display of the currently selected jump key is in a state where the cursor is hit. For example, in FIG. 20A, icon 2002 is currently selected.

  It is the processing in steps S1901 to S1903 in FIG. 19A that controls which jump key is selected immediately after such a screen is displayed. For example, it is assumed that the process of the jump mode is ended or the power is turned off in a state where the folder jump is selected in the previous jump mode. In this case, in step S1902, the system control unit 50 controls the cursor to automatically hit the folder jump icon 2004 when the jump mode process is entered. On the other hand, when the jump mode screen (FIG. 20A) is displayed for the first time, the process proceeds to step S1903. In step S1903, the system control unit 50 selects a default jump key, for example, the date jump located at the top of the jump key list as the default jump key. In the display of FIG. 20A, control is performed so that the cursor hits the date jump icon 2008. The default jump key may be arbitrarily determined by a user operation.

  Next, in step S1904, the system control unit 50 generates the information display unit 2009 based on the selected jump key. The generation of the information display unit 2009 will be described later. Next, in step S1905, the system control unit 50 decodes the image data to be displayed, and resizes the image data to be displayed in a size slightly smaller than the image display unit 28. This is to prevent a part of the image display from being overlapped with the jump key list display 2001 displayed on the left side of the image display unit 28 and hidden from being displayed in the display shown in FIG. 20A. . With this resizing process, the entire image based on the image data can be displayed in the display of FIG. 20A, and a user-friendly screen can be provided. When the jump mode is entered from the normal playback mode, the image displayed in the normal playback mode is decoded.

  In step S 1906, the system control unit 50 displays the resized image data, the jump key list display 2001, the cursor of the selected jump key, and the information display unit 2009 on the image display unit 28. After the display is completed, the process waits for a user operation in step S1907.

  Hereinafter, the information display unit generation processing in step S1904 in FIG. 19A will be described.

[About information display section generation processing]
20B is a diagram showing the information display unit 2009 extracted from FIG. 20A. Here, a case where the icon 2002 is selected as a jump key and a classification jump is performed will be described.

  In the classification jump, grouping is performed based on the classification information of the image data that is the jump key. In other words, it can be said that the designation of the jump key designates a classification standard for grouping. Reference numeral 2014 denotes a group icon displayed so that the type of the classified group can be identified. From the left, group icons corresponding to classification information such as “landscape” (2014), “event” (2016), “category 1” (2017), “category 2” (2018), “category 3” (2019) are displayed. ing. The group icon is not limited to a symbol, and a date, number, character string, or the like may be used.

  Reference numeral 2013 denotes an image number bar, which indicates the number of image files belonging to the group indicated by the group icon 2017 displayed immediately below by the length of the bar. In other words, the image number bar 2013 is an index indicating how many image files having classification information of category 1 exist. In addition, the indication 2015 indicates the number of characters in characters. In the displays 2013 and 2015, it is also possible to represent the total file size of the image instead of the number of sheets. The same display is performed for the other groups. The display 2015 displays the number of image files belonging to the group indicated by the selected group icon, and the display content is switched according to the selection of the group icon. The jump key (icon) in the jump key list display 2001 is selected by, for example, the up and down buttons of the cross button, and the group icon is selected by, for example, the left and right buttons of the cross button. The display form of the icon of the selected group is changed so that it can be distinguished from the unselected icon.

  A display 2011 shows a group to which the image data currently displayed in the image display area 2003 belongs, that is, classification information of the image data currently being displayed. Here, “Category 1” is displayed. Also, highlighting is performed by changing the color of the group icon corresponding to the group to which the currently displayed image belongs, increasing the width of the image number bar, or changing the color. Thereby, the user can easily recognize which category is currently selected. In FIG. 20B, a group icon 2017 and an image number bar 2013 are highlighted.

  In order to effectively use the screen space, only the group icons of the selected group may be displayed. However, the information display unit 2009 of the present embodiment displays a list of information of a plurality of groups at a time. To do. Therefore, the information display unit 2009 is a graph display in which the horizontal axis represents the group and the vertical axis represents the number of images, and the user can grasp at a glance how many images belong to which group. Thus, it becomes possible to improve a user's visibility by displaying the classification state according to group by the display form called a graph display.

  Next, a specific flow of information display unit generation processing will be described with reference to the flowchart of FIG. 19B.

  First, in step S1931, the system control unit 50 acquires necessary information to be output to the information display unit from the attribute information of the image data stored in the recording medium 200 based on the selected jump key. Next, in step S1932, the system control unit 50 groups the image data based on the selected jump key, and acquires the number of image data for each group.

  In step S1933, the system control unit 50 uses the total number of images recorded on the recording medium 200 (the total number of images in the recording medium) as the number of images classified into each category. Normalize. Then, for the number of images in each category, the height to be displayed as an image number bar on the image display unit 28 (information display unit 2009) is obtained. Next, in step S1934, the system control unit 50 generates and arranges an image count bar for each group displayed on the information display unit 2009 based on the height obtained in step S1933. Next, in step S 1935, the arranged image number bar is actually displayed in the information display unit 2009 of the image display unit 28. Specific display processing in step S1935 will be described later with reference to the flowchart of FIG.

  Next, in step S1936, the system control unit 50 refers to the attribute information of the image data to which group of the currently selected jump key the image data currently displayed in the image display area 2003 belongs. Judge by. If it belongs to any of the groups, the corresponding group icon and the image number bar are highlighted in step S1937. On the other hand, if it is not classified into any group, step S1937 is skipped, and the information display unit generation process is terminated.

[Graph display (S1935)]
The graph display process in step S4125 in FIG. 19B will be described in detail with reference to FIG.

  First, in step S2101, the system control unit 50 initializes a counter C for counting the number of groups displayed on the information display unit 2009. In step S2102, the system control unit 50 acquires the total number N of group types corresponding to the currently selected jump key type. In step S2103, the acquired total number N is compared with a predetermined number T determined in advance.

  If the total number N is equal to or greater than the predetermined number T, the display processing of the icon and the image number bar is performed only for the group in which the image exists in steps S2104 to S2109. In this case, any group having no image is not displayed at all. On the other hand, when the total number N is less than the predetermined number T, display processing is performed for all groups in steps S2110 to S2114 regardless of the presence or absence of images. A group with no image is displayed with a grayed out icon. In this way, the display mode is switched according to the total number of types of groups, such as hiding or graying out the group icon of a group to which no image belongs.

  In step S2104, the system control unit 50 determines that the number of groups displayed on the information display unit 2009 (value of C) is not greater than or equal to the group display number D (number of groups that can be displayed at one time on the information display unit 2009). Determine whether. If the group display number has not been reached, the process proceeds to step S2105. In step S2105, the system control unit 50 determines whether one or more images are classified into the group to be processed. If it is determined that the information is classified, the system control unit 50 displays the group icon and the image number bar on the information display unit 2009 in step S2106. In step S2107, the system control unit 50 increments the information display unit 2009 by a counter C that indicates the number of groups currently being displayed in the group. In step S2108, the system control unit 50 determines whether the group is the last group. If the group is not the last group, the process proceeds to step S2109. In step S2109, the system control unit 50 sets the next group as a processing target, and returns the process to step S2104. If it is determined in step S2104 that the number of groups displayed on the information display unit 2009 (value of C) has exceeded the predetermined group display number, or if it is determined in step S2108 that it is the last group, The process ends.

  As a result of the processing described above, as many as the group display numbers D are displayed as shown in FIG. 22A. The group display number is the number of groups that can be displayed on the information display unit 2009 at one time. For example, the group display number D is 5 in the display example of the information display unit shown in FIG. 22A. In the example shown in FIG. 22A, only the group icon 2202 (03/16/2005) of the selected group is displayed. At this time, if the number of groups into which the image is classified is larger than the category display number D, the groups are displayed as much as displayable (in this example, only five groups are displayed). When the user selects the mark 2201 using the operation unit 70, other groups that are not displayed can be displayed. In addition, instead of explicitly selecting the mark 2201, for example, when the fourth group from the left in FIG. 22A is selected, the right button is operated to move the selection target to the fifth group from the left. The group that has been hidden may be displayed. On the other hand, when the number of groups in which images are classified is smaller than the category display number D, all groups are displayed on the information display unit 2009 as shown in FIG. 22B.

  A case where the total number N of the acquired group types is less than the predetermined number T in step S2103 will be described. In this case, the processes of steps S2110 to S2116 are performed, but the processes of steps S2110 to S2112 and S2114 to S2116 are the same as steps S2104 to S2109. The difference is handling of a group in which no image is classified (step S2113). That is, when it is determined in step S2111 that no image is classified into the group, the group icon of the group is grayed out and displayed. FIG. 22C shows a specific example of grayout processing. As in the case of the group icon 2241, gray-out display or the like is performed to indicate that no image is classified into the group. On the other hand, a group in which at least one image is classified displays an image number bar and a group icon in a normal display mode (step S2112). Since the increment of the counter C in step S2114 is executed after one of steps S2112 and S2113 is executed, D groups are displayed for both the group into which the image is classified and the group into which the image is not classified. The

  As described above, the process of changing the display mode of the group icon is performed according to the number of groups corresponding to the type of jump key and the number of image files classified into each group. By this processing, the user can grasp at a glance a group having no image file. Further, in the above processing, when the number of groups is equal to or greater than a certain (T), the group icon of the group in which the image file is not classified is not displayed. As a result, when the number of groups is large, the user can confirm and select only a certain group of image files with the left and right buttons. Since more groups than necessary are prevented from being displayed, operability is improved.

  Note that the determination in step S2103 can be performed under any of the following conditions (1) to (4), for example.

  (1) Judgment is made based on whether or not the currently selected jump key is of a type in which any image file is always classified as belonging to any group. For example, the shooting date attribute information is information that a normal image file always has. In the case of date jump using the shooting date information, the group icon of the group in which no image file is classified is not displayed. On the other hand, the classification information is information that not all image files have. In the case of classification jump using this classification information, the group icon of a group in which no image file is classified is displayed in gray out.

  (2) Judgment is made based on whether or not the currently selected jump key is classified based on information relating to the shooting conditions. For example, attribute information such as a shooting date is a kind of shooting condition. In the case of date jump using the shooting date information, the group icon of the group in which no image file is classified is not displayed. On the other hand, information about folders is not about shooting conditions. Therefore, in the case of the folder jump using this classification information, the group icon of the group in which no image file is classified is displayed in gray out.

  (3) It is determined whether or not the currently selected jump key is classified based on parameters that can be added later after shooting. For example, the attribute information of the shooting date is not of a character that can be changed later. In the case of date jump using the shooting date information, the group icon of the group in which no image file is classified is not displayed. On the other hand, the classification information is attribute information that can be added later by a user operation. In the case of classification jump using this classification information, the group icon of a group in which no image file is classified is displayed in gray out. If the attribute information can be added later, any classification information that is not added to any image may be used. Therefore, it is better to display all groups, that is, classification information.

  (4) Judgment is made based on whether or not the currently selected jump key is attribute information that allows a plurality of parameters to be added to one image file. For example, the shooting date attribute information is not of a character that allows two dates to be added to one image file. In the case of date jump using the shooting date information, the group icon of the group in which no image file is classified is not displayed. On the other hand, the classification information can add two classification information to one image file. In the case of classification jump using this classification information, the group icon of a group in which no image file is classified is displayed in gray out.

  In the display example in the information display unit 2009, the number of images in each group is indicated by an image number bar, but the present invention is not limited to this. For example, a position bar can be used instead of the image number bar. The position bar is a bar indicating where the currently displayed image is located in the entire image. FIG. 20C shows an example of the position bar display. In the position bar 2091, the entire bar indicates the total number of images, and the point 2092 indicates the position of the image 2093 currently being displayed. When the jump key is not a key that jumps for each classification information, this display form is effective for, for example, moving image jumping, image feeding in units of 10 sheets for jumping every 10 sheets, and the like. That is, when jumping from a set of consecutive images to an arbitrary point, the position bar display can improve the visibility rather than the image number bar display.

  Note that the display of the histogram and the position bar can be automatically switched between the image number bar and the position bar described above according to the jump key.

[Jump Mode (S1721) Processing (Part 2: Jump Operation)]
Returning to the flowchart of FIG. 19A, processing when an operation from the user is detected in step S1907 will be described.

<Jump key switching>
If there is an operation from the user, the process proceeds from step S1907 to step S1908, and the system control unit 50 determines whether the key input by the user is an up button or a down button. If it is determined that the button is one of the up and down buttons, the process proceeds from step S1908 to step S1909. In step S1909, the jump key cursor in the jump key list display 2001 is moved up and down. That is, the user can specify the jump key by switching to a desired one by operating the up and down buttons.

  The jump key switching process in step S1909 will be described with reference to the flowchart of FIG. 19C.

  First, in step S1951, the system control unit 50 generates the information display unit 2009 again according to the jump key selected by the user's up / down button operation. This is because if the jump key changes, the contents to be displayed (group configuration, etc.) change, and it is necessary to regenerate the above-described graph display. Next, in step S1952, the system control unit 50 performs a cursor movement process in the jump key list display 2001. If the upper button is pressed, the jump key is moved to the next upper icon in the jump key list display 2001, and if the lower button is pressed, the cursor is moved to the next lower icon. Then, the jump mode switching process ends.

<Switching group>
Returning to the flowchart of FIG. 19A again, the case where the operation input detected in step S1907 is a left / right button will be described. In this case, the process proceeds from step S1910 to step S1911.

  In step S1911, the system control unit 50 performs group switching processing in accordance with the input of the left and right buttons. For example, in FIG. 20B, when the right button is pressed while “Category 1” 2017 is selected, the content of the image display area 2003 in FIG. 20A is changed to that of the image file having the classification information “Category 2” 2018. Switch. Similarly, when the left button is pressed, the display is switched to an image file having the classification information of “event” 2016. That is, by operating the left and right buttons, the user can switch the display target group to a desired group and execute jump processing.

  Hereinafter, the jump execution process associated with group switching executed in step S1911 will be described. FIG. 19D is a flowchart for explaining the jump execution processing in step S1911.

  In step S1961, the system control unit 50 determines whether the image data currently displayed in the image display area 2003 is classified into one of the groups based on the selected jump key. For example, since classification information or the like is not necessarily assigned to all image data, the presence of such image data is determined in this step. If it is determined that it is classified into any group, in step S1962, the system control unit 50 determines whether or not the operated button is the right button.

  If it is the right button, the process advances to step S1963. In step S1963, the system control unit 50 acquires image data representing the group from the image data belonging to the group displayed on the right side of the group where the cursor is currently located in the information display unit 2009. For example, in FIG. 20B, if the cursor is currently on “category 1” 2017, representative image data is acquired from image data belonging to the group of “category 2” 2018.

  In this embodiment, it is assumed that image data representing a group is image data having the youngest ID. In the present embodiment, a file name is used as the ID. As described above with reference to FIG. 9, the file name of the present embodiment is in the format of XXXXyyyy.JPG, and yyyy is a numerical value from 0001 to 9999. The youngest ID in the present embodiment is an ID assigned to a recently generated file. Of course, when the file names are arranged in ascending or descending order, the file name that comes first may be the youngest ID.

  On the other hand, if the right button is not determined, the left button is pressed. Accordingly, processing proceeds from step S1962 to step S1964. In step S1964, the system control unit 50 acquires image image data representing the group from the image data belonging to the group corresponding to the group displayed on the left side of the group where the cursor is currently located in the information display unit 2009. To do. For example, in FIG. 20B, if the cursor is currently on “Category 1” 2017, a representative image is acquired from the image data belonging to the “event” 2017 group. Note that the image data representing the group is image data having the youngest ID in the group as described above.

  If it is determined in step S1961 that the image data being displayed in the image display area 2003 is not classified into any group, the process proceeds to step S1965. In step S1965, the system control unit 50 belongs to the currently selected jump key and has the oldest ID (= the shooting date / time) in the group with the highest priority among the groups into which the images are classified. Image data having the ID of the old image).

  In step S1966, the system control unit 50 decodes and resizes the image data acquired in any one of steps S1963, S1964, and S1965. In step S1967, the system control unit 50 regenerates the information display unit 2009 and ends the jump execution process. In this process, when the user performs an operation of selecting a group with the left and right buttons, an image belonging to the group is automatically displayed. The generation process of the information display unit 2009 has been described with reference to FIG.

  When the process of step S1911 is completed as described above, the process returns to step S1906. In step S1906, the system control unit 50 displays the image resized in step S1967 on the image display unit 28. In this way, the display content of the image display area 2003 is updated to an image corresponding to the selected group. As described above, the jump key switching process (S1909) or the jump execution process (S1911) is executed according to the up / down button input or the left / right button input detected in step 1907. When the processing is completed, redrawing is performed on the image display unit 28 (S1906), and the apparatus again waits for an operation from the user (S1907).

<Send one image>
Returning to the flowchart of FIG. 19A again, if the operation input detected in step S1907 is an operation input of the wheel 73, the process proceeds from step S1912 to step S1913. In step S <b> 1913, the system control unit 50 executes a process for feeding one image. Hereinafter, the one-image feeding process will be described with reference to the flowchart of FIG. 19E.

  First, in step S1981, it is determined whether or not the wheel 73 is operated clockwise (clockwise) as viewed from the user. If it is clockwise, image data having an ID lower than that of the currently displayed image data is searched in the group where the cursor is currently located, and the ID is acquired. As described above, in this embodiment, a file name is used as the ID. In step S1982, when the files in the group are arranged in the order of the file number, the image data having the file name next to the file name of the image data being displayed is searched. As described with reference to FIG. 9, since the file number is incremented by one in generating the file name, the file having a larger file number is a file generated later in time. Therefore, in the present embodiment, a larger file number is a younger ID.

  On the other hand, if it is determined that it is not clockwise, that is, if it is operated counterclockwise (counterclockwise), the process proceeds from step S1981 to step S1983. In step S1983, the system control unit 50 searches the image data with the next ID next to the image data being displayed in the group where the cursor is currently located, and acquires the ID. That is, when the files in the group are arranged in the order of the file number, the image data having the file name that comes immediately before the file name of the image data being displayed is searched.

  In the above description, the order of IDs (file names) is determined using file numbers. However, the entire file names may be arranged in ascending order or descending order.

  Next, in step S1984, the system control unit 50 decodes and resizes the image data corresponding to the ID acquired in step S1982 or step S1983. In step S1985, the system control unit 50 regenerates the information display unit 2009, and ends the one-image feed process.

  When the jump key is a moving image, that is, when the moving image jump icon 2005 is selected, the moving image data being displayed can be sequentially displayed in units of frames by operating the wheel 73. That is, the function by the operation of the wheel 73 is switched according to the selected jump key.

[Processing in Jump Mode (S1721) (Part 3: Filtered Display)]
Returning to FIG. 19A again, if the operation input detected in step S1907 is an operation for narrowing-down display (operation of a narrowing-down button), the process proceeds from step S1914 to step S1915.

  In step S1915, the system control unit 50 redraws (resizes) the image data currently displayed in the image display area 2003 so as to be displayed on the entire image display unit 28. In step S1916, the system control unit 50 executes processing in the narrowed playback mode. In the narrowed-down playback mode, when a specific group is designated, it is possible to play back image data or the like with the group narrowed down. This narrowing reproduction process will be described with reference to FIG. 23A.

<Filtering playback processing>
In the narrowed-down playback mode, only images classified into certain classification information, ie, images belonging to a certain group, are targeted for reproduction from the image data recorded on the recording medium 200. Then, operations similar to those in the normal reproduction mode such as deletion, protection, image rotation, and multi-image display can be performed on the image to be reproduced. As described above, the classification information includes classifications such as person, landscape, event, categories 1, 2, 3, and work. Next, the narrowed playback mode process will be described with reference to FIG. 23A. FIG. 23A is a flowchart showing in detail the process of step S1916 of FIG. 19A.

  When the narrowed playback mode is entered, in step S2301, the system control unit 50 displays guidance (2401 in FIG. 24A) indicating a means for exiting the narrowed playback mode on the screen. This guidance indicates that the operation returns to full image reproduction by operating a predetermined operation member, for example, the upward button of the operation unit 70.

  Next, in step S2302, the system control unit 50 executes a narrowed information display process for displaying an icon or the like representing a narrowed state. Details of the narrowing-down information display process will be described later with reference to FIG. 23C.

  In step S2303, the system control unit 50 determines whether new image data has been added to the recording medium 200. If image data has been added to the recording medium 200, the process advances to step S2303, and the system control unit 50 executes a narrowing release process. The narrowing release process will be described later with reference to FIG. 23B. Note that the addition of image data in the present embodiment occurs, for example, when the edited image is newly saved after color editing processing or partial enlargement processing is performed on the image being narrowed and reproduced. It also occurs when a new image is taken while maintaining a narrowed state.

  If addition of image data is not detected in step S2303, the process proceeds to step S2304, and transitions to a state of waiting for an operation input from the user.

  If an operation input from the user is detected and this is an instruction for canceling narrowing reproduction or mode switching, the process proceeds from step S2305 to step S2306, and the narrowing cancellation process is executed. If an operation for setting classification information (the process of FIG. 25A) is performed in the narrowed-down playback state, this operation is determined as an instruction to cancel the narrowed-down playback. The narrowing cancellation instruction may be the same as a button for entering a jump mode for narrowing down. Mode switching refers to a case where there is a request to shift to the scene mode and exit from the playback mode, or a case where there is a request to shift to the image classification information setting mode. At this time, regarding the operation of exiting to the playback mode, it is possible to set in advance whether or not the narrowing is automatically canceled depending on the setting.

  On the other hand, if the operation input detected in step S2304 is a delete instruction (delete button), the process proceeds from step S2307 to step S2308. In step S2308, the system control unit 50 deletes the image file of the image data currently displayed on the image display unit 28. In step S2309, the system control unit 50 determines whether an image remains in the currently narrowed-down group. If there is no image data remaining in the group, the process advances to step S2306 to perform a narrowing release process. If image data remains in the group, the process proceeds to step S2201. The system control unit 50 acquires the ID of the image data to be displayed next in step S2301, performs decoding and resizing of the image data in step S2312, and displays the image on the image display unit 28 in step S2312. Then, after the image data is displayed on the screen, the process returns to step S2302, and the narrowed down information display process is executed.

  If the operation input detected in step S2304 instructs image transition (in this example, the operation input is a left / right button), the process proceeds from step S2313 to step S2314. In step S2314, if the pressed button is the left button, the system control unit 50 selects the previous image ID having the classification information that is actually used as a reference based on the currently displayed image data. If it is a button, the next image ID having the classification information is acquired. After acquiring the image ID, the system control unit 50 decodes and resizes the target image data in step S2312, and displays it on the screen in step S2312. Thereafter, the process returns to step S2302, and the narrowed-down information display process is executed.

  If the operation input detected in step S2304 indicates single / multi-screen switching, the process advances from step S2315 to step S2316. In step S2316, the system control unit 50 switches the display mode to the multi-playback screen if the display on the current image display unit 28 is a single playback screen, and to the single playback screen if the display is a multi-playback screen. In step S <b> 2317, the system control unit 50 acquires the ID of an image to be displayed on the image display unit 28. Thereafter, in step S2311, the system control unit 50 decodes and resizes the image data corresponding to the ID acquired in step S2317. In step S2312, the image data processed in step S2311 is displayed on the image display unit 28. Thereafter, the process returns to step S2302, and the narrowed down information display process is executed.

  If the operation input detected in step S2304 does not correspond to any of the above, in step S2318, other narrowing reproduction processing corresponding to the operation input is performed. After the process is completed, the process returns to step S2302, and the narrowed down information display process is executed.

  Note that various operations can be performed even during narrowed playback. For example, it is possible to perform a process involving narrowing down with classification information different from the classification information currently narrowed down during narrowed playback. In this case, the current narrowed playback mode is automatically canceled. By canceling, the user is not confused by which attribute information is narrowed down. If the processing that involves the narrowing is processing that is not intended for image playback, such as image file protection or deletion, the current narrowed playback is maintained, and the processing is intended for playback such as slideshows. The narrowed playback may be canceled.

<Slide show processing>
Here, as an example, a case will be described in which an instruction to perform a slide show is given during the narrowed playback mode. The instruction to perform the slide show is performed by the user pressing the menu button and selecting the slide show execution from the menu.

  FIG. 23D shows a flowchart in the case where an instruction to perform a slide show is given during the narrowed playback mode. First, in step S 2361, the system control unit 50 displays a slide menu on the image display unit 28. The slide show menu is a menu for allowing the user to select a slide show target. FIG. 23E shows an example of the slide show menu. Reference numeral 2381 denotes an area in which a view of the first image data to be slide show is displayed.

  Next, in step S2362, the system control unit 50 selects a slide show target in accordance with an operation from the user. In the present embodiment, it is possible to collectively select images to be a slide show target in a specific unit. In FIG. 23E, reference numeral 2383 denotes an icon display area in which a slide show target is indicated by an icon. The user selects a desired icon from these icons by operating the left and right keys. The system control unit 50 selects a slide show target in accordance with a user operation. Examples of slideshow targets include, for example, a slideshow of image data taken at a specific date, a slideshow of image data including specific classification information, a slideshow of moving image data, a slideshow of still image data, and the like. is there. In the present embodiment, when a slide show is performed during narrowed playback, an icon corresponding to narrowing attribute information at the narrowed playback is selected from the icons in the icon area 2383. For example, when the slide show menu is displayed during narrowed playback in a specific folder, the icon indicating the folder among the icons displayed in the icon area 2383 is selected first. The same applies to the selection of attribute information in step S2370.

  In step S2363, the system control unit 50 determines whether or not the SET button has been pressed. If it is determined that the button has been pressed, the process advances to step S2369 to display an attribute information selection menu. FIG. 23F shows an example of the attribute information selection menu when a folder icon is selected on the screen of FIG. 23E. 2391 is the first image of the slide show, 2392 is the last image of the slide show, and 2393 is the total number of images to be slide show. If it is determined that the SET button has not been pressed, the process proceeds to step S2364.

  In step S2370, the system control unit 50 selects attribute information of image data to be a slide show target. In FIG. 23F, 2394 indicates the currently selected attribute information. The user can select attribute information, here the type of folder, by operating the left and right keys. The system control unit 50 selects attribute information according to a user operation. Note that the selection in steps S2362 and S2370 can be selected independently of the attribute information narrowed down by the narrowing reproduction in FIG. 23A. That is, the slide show process in the present embodiment can be said to be a process of performing sequential playback by performing narrowing down under conditions different from the narrowing down process of FIG. 23A. When the MENU button 2395 is pressed, the screen returns to the screen shown in FIG. 23E.

  In step S2364, the system control unit 50 determines whether there is an instruction to start a slide show. Specifically, it is determined whether or not the start icon 2382 in FIG. If so, the process advances to step S2365. If not selected, the process proceeds to step S2371.

  In step S2365, the system control unit 50 compares the attribute information currently being narrowed down with the attribute information selected in step S2370. In step S2366, it is determined whether the attribute information is the same. If they are the same, the process advances to step S2367. If they are different, the process advances to step S2373 to cancel the narrowed state. In step S2367, a slide show is executed according to the attribute information selected in step S2370. In the present embodiment, a slide show is realized by sequentially retrieving and reproducing images including the selected attribute information.

  In step S2368, the system control unit 50 determines whether or not the slide show has ended. Here, the end of the slide show includes not only the case where all the target images are displayed but also the case where the slide show is stopped halfway by a user operation. If it is determined that the process has been completed, the process returns to step S2361. If it is determined that it has not ended, the slide show is continued.

  Next, step S2371 will be described. In step S2371, the system control unit 50 determines whether there is an instruction to exit the menu. Specifically, it is determined whether or not a MENU button has been pressed by a user operation. If so, the process advances to step S2372. If not, the process returns to step S2361. In step S2372, the system control unit 50 ends the slide show process and returns to the normal playback mode. At this time, the image that was last subjected to the slide show is displayed.

  As described above, in the present embodiment, when a slide show is performed in a narrowed down state, the attribute information of the image data to be reproduced in the slide show is compared with the attribute information of the narrowing down, and whether or not the narrowing is automatically canceled is determined. I decided to control it. In this way, since the narrowing is maintained when the attribute information of the narrowed playback and the slide show is the same, the user can save the trouble of narrowing down again under the same conditions. In addition, when the attribute information of the narrowed playback and the slide show is different, the narrowing is canceled, so that the situation where the user has not found the image data that has been viewed in the slide show so far is not displayed.

<Restriction release processing>
The narrowing cancellation processing in step S2306 in FIG. 23A will be described with reference to FIG. 23B.

  In step S2321, the system control unit 50 determines whether there is image data in the group currently being narrowed down, that is, whether there is image data including attribute information that is narrowed down. For example, as a result of performing the deletion process in step S2308, if there is no image data including the attribute information being narrowed down, there is no point in narrowing down. Therefore, if it is determined that there is no image data, the process proceeds to step S2322, and a specific process for canceling the narrow-down mode is started. Conversely, if there is image data including the attribute information that has been narrowed down, the process proceeds to step S2326. In step S2326, the system control unit 50 determines whether image data has been added. If it is determined that it has been added, the process proceeds to step S2327. If it is determined that it has not been added, the process proceeds to step S2322.

  In step S2327, the system control unit 50 compares the attribute information of the added image with the currently narrowed-down attribute information. In step S2328, it is determined whether or not the attribute information is the same as a result of the comparison in step S2327. If it is determined that they are not the same, the process advances to step S2322 to start a specific process for canceling the narrow-down mode. When it is determined that they are the same, this flow is terminated without canceling the narrowing down.

  In step S2322, the system control unit 50 acquires the youngest ID among the IDs of the image data stored in the recording medium 200. Then, the system control unit 50 decodes and resizes the image data in step S2323, and displays the image data on the image display unit 28 in step S2324. In step S2325, the system control unit 50 displays a narrowing cancellation message such as 2411 in FIG. 24B, and ends the narrowing cancellation processing.

  By performing the processing in steps S2327 to S2328, the narrowing mode is not canceled when the image data added during the narrowing playback mode includes narrowed attribute information. That is, the user can browse the added image data while maintaining the narrowed-down playback mode that has been performed so far. On the other hand, if the added image data does not include the attribute information that has been narrowed down, the narrowed-down playback mode is canceled. This is due to the following reason. The newly added image data does not include the attribute information that has been narrowed down until now. Therefore, if the narrowed playback mode is not canceled, the newly added image data is not targeted for narrowing playback, and the user cannot view the image data just added. Therefore, in this embodiment, the cancellation of the narrowing is controlled depending on whether the added image data includes the classification information that is currently narrowed down, that is, whether it belongs to the group that is currently narrowed down. This makes it possible to cancel the narrowing-down at an appropriate timing for the user.

<Refinement information display processing>
As described above, in the jump mode, when an operation input instructing the narrow-down playback is detected from the operation unit 70, the system control unit 50 performs the narrow-down playback process for playing back only the image file to which the classification information set by the user is added. Start. In order to let the user know that the narrowed playback is performed at the start of the narrowed playback process or when sending an image during the narrowed playback, it is necessary to display information specific to the narrowed playback on the display image. In step S2302, the narrowed-down information display process is executed. This process will be described in detail below. FIG. 23C is a flowchart showing narrowed-down information display processing.

  In step S2341, the system control unit 50 determines whether the narrowed-down image files are sorted in order of creation date and time. If it is determined that the images are not sorted, in step S2342, the narrowed-down image files are sorted in order of creation date and time. In this embodiment, the sorting date is 1, 2,... In order from the oldest creation date, but may be sorted in order from the newest. Further, it is not always necessary to arrange them in the order of date and time, and it is sufficient that the image files are sorted according to a certain rule. For example, the file numbers may be used for sorting.

  Next, in step S2343, the system control unit 50 acquires the total number x of the narrowed down image files. In step S 2344, the system control unit 50 acquires image information of an image file to be displayed on the image display unit 28. Here, the narrowed-down image files are sorted in order of creation date. Accordingly, in step S2345, based on the creation date and time of the image file to be displayed, the system control unit 50 determines the number of images created in the narrowed-down image file (creation date and time). The sequence number y) is calculated. As described above, the total number x of the narrowed down image files, information about the display target image, and the creation date order number y of the display image image are acquired. In step S2346, the system control unit 50 displays the total number x of these image files, information about the display target image, and the creation date order number y of the display image image on the image display unit 28.

  An example of the result of the display process in step S2346 is shown in FIG. 24C. In FIG. 24C, in addition to the classification information “category 1”, classification information “landscape” and “event” is added in advance to the display image 2436, and currently “category 1” is narrowed down and reproduced as a search key. Shall. The total number x of the narrowed-down files is represented by 2434, and the display image creation date order number y is represented by 2435. In the example of FIG. 24C, the display “1/3” is generated by the total number of files x and the creation date order number y. That is, there are a total of three categories with “category 1” classification information added, and the display image 2436 is the oldest image (first image).

  Returning to FIG. 23C, in step S2347, the system control unit 50 initializes a variable n, which indicates the display position of the icon indicating the classification information, to 1. In step S2348, an icon indicating a search key is displayed on the nth (top) icon list. By this processing, for example, an icon 2431 in FIG. 24C is displayed. The display position of the icon 2431 may be at the bottom of the screen. In short, it may be displayed anywhere as long as the user can recognize the currently narrowed category at a glance. In addition, the icon 2431 indicating the search key may be displayed in a different color or displayed larger in order to differentiate it from icons indicating other classification information.

  When the icon indicating the search key is displayed as described above, the process proceeds to step S2349. In step S2349, the system control unit 50 determines whether the playback display is set to single playback or multi playback. If it is determined that the multi-playback display is set, the process ends. This is for simplifying the information display, but details will be described later.

  On the other hand, if it is determined that single reproduction is to be performed, the process proceeds to step S2350. In step S2350, the system control unit 50 determines whether there is classification information added to the display image 2436 in addition to the classification information serving as a search key. If other classification information is added, a variable n indicating an icon display position is incremented in step S2351. In step S2352, the system control unit 50 displays an icon indicating the classification information on the nth icon list.

  The processes in steps S2350 to S2352 are repeated until all the icons indicating the classification information added to the display image 2436 are displayed on the image display unit 28. When all the icons are displayed, this process ends. In the example of FIG. 24C, an icon 2432 indicating “landscape” classification information and an icon 2433 indicating “event” classification information are displayed, and the classification information is added to the image 2436 being displayed. I understand.

  In the present embodiment, the classification information added to the displayed image is displayed using icons, but the present invention is not limited to this. For example, the name of the classification information may be directly displayed as long as the user can recognize the added classification information.

A display example by the above processing will be described with reference to FIGS. 24C and 24D. In the image 2436, an icon 2432 indicating “landscape” and an icon 2433 indicating “event” are displayed in the second and third icons, respectively. FIG. 24D shows a multi playback display 2450 during narrowed playback. In the case of multi-playback, as described above, icons other than the icon 2431 indicating the search key are not displayed. By doing so, it is possible to prevent the display from becoming complicated due to an increase in the amount of information during multi-screen display. In addition, for example, when displaying an enlarged image, icons other than the icon 2431 indicating the search key may be hidden for the same reason. The narrowed information display processing has been described above. Note that the display in the present embodiment has been described on the premise of narrowing playback using the search key. However, for example, display processing for displaying the icons 2431 to 2433 in FIG. 24C during the jump mode before narrowing down (including the display of only the icon 2431). You can go. In this case, the icon indicating the search key is displayed at the highest level during the jump mode, so that the user can recognize at a glance which search key has been specified, and the position of the icon when entering the refined playback after that. Since it does not change, operation can be continued smoothly.

  Further, a mechanism that can reset the search key during narrowed playback may be provided. In this case, an image to which the currently specified search key classification information is added may be searched for the currently narrowed playback image (a group of filtered image files) as a search target, or all images may be searched again. You may enable it to search as a target. Further, when resetting the search key, the user may be able to specify whether all images are to be searched or whether a narrowed-down image file group is to be searched. In this manner, another search key can be reset during the narrowed playback, so that the user can search for a desired image quickly.

  Note that as a method for resetting the search key during narrowed playback, for example, any of the icons 2431 to 2433 indicating the classification information may be selected in the display state of FIG. 24C.

[Jump Mode (S1721) Processing (Part 4: Other Processing)]
Returning to FIG. 19A again, if the operation input detected in step S1907 is an operation to instruct to end the jump mode, the process proceeds from step S1917 to step S1918. The operation for ending the jump mode includes an operation of pressing a MENU button, for example. When such an operation is performed, the system control unit 50 redraws the image on the entire image display unit 28 in step S1918. In step S1920, the jump key is stored in the nonvolatile memory 56, and the jump mode is terminated. The jump key stored in step S1920 becomes the determination target in step S1901 when the next jump mode is entered.

  If the operation input detected in step S1907 is a power OFF operation by the power switch 72, the process proceeds from step S1919 to step S1920. That is, when it is determined that the power OFF operation has been performed, the system control unit 50 records the currently selected jump key and ends the jump mode.

  If the operation input detected in step S1907 does not correspond to any of the operations described above, the process returns to step S1907 without executing any process, and enters a state of waiting for an operation from the user.

  As described above, the screen illustrated in FIG. 20A includes the jump key list display 2001, the information display unit 2009, and the image display area 2003. Thus, by displaying the three pieces of information on one screen, a display with good visibility for the user is provided. In addition, such a screen may require a complicated operation to operate each piece of information instead of having good visibility. That is, the operation tends to be complicated in order to enable switching of jump keys in the jump key list display 2001, switching of groups in the information display unit 2009, switching of image data displayed in the image display area 2003, and the like. However, in the present embodiment, the up / down buttons are used to switch jump keys, the left / right buttons are used to switch groups, and the wheel 73 is used to switch image data to be displayed. With this configuration, the switching operation of the three information displayed at the same time is assigned to different operation units, and the user does not need a complicated operation for each switching operation. That is, the user can easily perform an operation of switching the group corresponding to the jump key while switching the jump key one after another. In addition, it is possible to easily perform an operation of checking image data while switching groups.

[Classification information setting mode (S1711)]
As described above with reference to FIG. 17, in the digital camera 100 of the present embodiment, the processing in the classification information setting mode is executed by selecting the classification information setting menu. FIG. 25A is a flowchart showing processing in the classification information setting mode.

  In step S2501, the system control unit 50 checks whether there is an operation input. The operation input here includes a button operation by a user, an operation for a battery cover, an event for notifying a decrease in power, and the like. If there is no operation input, wait until there is an input.

  If the operation input detected in step S2501 is an end operation instructing the end of classification information setting, the process proceeds to step S2503. In the present embodiment, the operation for instructing the end of the classification information setting includes the operation of the menu button of the operation unit 70 for exiting the classification information setting process, the power-off operation, and the mode change from the reproduction mode to the shooting mode. Operations such as operations are included. In step S2503, the system control unit 50 writes the classification information of the image data changed in step S2511 (described later) to an image file. Then, the classification information setting mode is ended. When the process ends, the process returns to the input waiting state (step S1701) of FIG.

  On the other hand, if the operation input detected in step S2501 is an operation on the image advance button included in the operation unit 70, the process advances from step S2505 to step S2506. In step S2506, the system control unit 50 writes the classification information of the image data changed in step S2511 (described later) to an image file. In step S2507, the next image data to be displayed is read. The image feed buttons are formed in a pair of directions (left and right direction buttons in this example), and the image data to be displayed next changes depending on the designated direction. In step S2508, the system control unit 50 performs file analysis processing on the image data read in step S2507, and acquires attribute information and the like from the file. The file analysis process will be described later with reference to FIG. In step S 2509, the system control unit 50 displays the read image data on the image display unit 28. At this time, attribute information such as shooting information and classification information is also displayed. If it is found that the data is invalid, such as a part of the image file being broken, according to the file analysis result in step S2508, an error display to that effect is also displayed. When the display is completed, the process returns to step S2501 and waits for input.

  Note that the image feed processing described in steps S2505 to S2509 is a single reproduction in which one image data is displayed on one screen, and a multiple reproduction (multiple reproduction in which multiple images (for example, nine images) are reproduced on one screen). It can be applied to any case of image display). In the case of multi-image display, the cursor is sequentially moved according to the image advance instruction, and the classification information of the image data is written to the image file according to the movement instruction.

  If the operation input detected in step S2501 is a classification information change operation, the process advances from step S2510 to step S2511 to perform classification information change processing for the displayed image data. At this stage, the change of the classification information is not written to the image file, and the changed content is stored in the memory 32. In step S 2512, the system control unit 50 reflects the changed classification information on the display on the image display unit 28.

  If the operation input detected in step S2501 does not correspond to any of the above, other processing is performed in step S2513. Other processing includes, for example, switching between single reproduction and multi-image display.

  As described above, by writing the classification information to the image file at the time of switching the image data display or at the end of the classification information setting mode, the number of accesses to the recording medium 200 is reduced and the operation speed is improved. Can do.

<About classification information export processing>
FIG. 25B is a flowchart showing the classification information writing process executed in steps S2503 and S2506 of FIG. 25A.

  When there is a request for writing the classification information, in step S2521, the system control unit 50 determines whether or not the classification information has been changed. If it is determined that there is no change, the process is terminated as it is. On the other hand, if it is determined that there is a change in the classification information, the process proceeds to step S2522.

  In step S2522, the system control unit 50 records the changed classification information in the file header of the image file, and updates the classification information in the file header. In step S2523, the image file with the updated file header is written to the recording medium 200.

  Subsequently, in step S2524, the system control unit 50 determines whether or not the reliability of the target directory has been confirmed. The confirmation of reliability will be described later with reference to FIGS. 31A and 31B. If it has been confirmed, the process proceeds to step S2525, and the system control unit 50 updates the description content of the search management file. In step S2526, the updated search management file is written to the recording medium 200. On the other hand, if the reliability confirmation of the target directory has not been completed yet, steps S2525 and S2526 are skipped, and this process ends without updating the search management file. The reliability of the target directory and the search management file will be described later.

<Classification information setting screen>
FIG. 26 is a diagram showing a display example of the classification information setting screen. In FIG. 26, 2600 indicates the entire classification information setting screen according to the embodiment. The classification information stored in association with the currently displayed image data can be changed by an operation from the classification information setting screen 2601.

  Reference numeral 2601 denotes a title display indicating that the current screen is a classification information setting screen. Reference numeral 2602 denotes a list display of settable classification information. In this display example, seven types of classification are vertically displayed as a list. A check mark is shown in the classification display corresponding to the classification information given to the image data being displayed. In FIG. 26, a check mark is displayed on the classification display 2602 of “person” and the classification display 2605 of “category 1”. Therefore, it can be seen that the image data displayed on the classification information setting screen 2600 is assigned classification information of “person” and “category 1”.

  Reference numeral 2603 denotes classification information that is currently being changed. The background color is changed so that the cursor can be seen. Furthermore, a check mark is displayed larger than other classifications. In this state, by pressing the [SET] button included in the operation button 70, the classification information can be turned on / off. If the above operation is performed in a state where the classification information to be changed is not added to the displayed image data, the classification information is added to the image data by pressing the [SET] button. On the other hand, when the above operation is performed in a state where the classification information to be changed is attached to the displayed image data, the classification information is deleted from the image data by pressing the [SET] button.

  Reference numeral 2604 denotes a guidance display. Here, it is shown that the above-mentioned [SET] button can be used to check or cancel, and the [MENU] button can end the classification information setting mode.

  On this screen, the classification information to be changed can be changed by the up and down buttons included in the operation button 70. In addition, the image data currently displayed can be switched by moving the image with the left and right buttons.

  Based on the classification information given as described above, the above-described narrowing reproduction can be executed. However, if the above classification information setting is performed in the narrowed reproduction state, the image data to be reproduced may disappear due to the classification information setting operation. Therefore, it is not possible to move to the classification information setting screen during narrowed playback, or the state of narrowed playback is canceled when moving to the classification information setting screen. Sometimes it can be done. Here, “classification information cancellation is performed when classification information setting is completed” will be described. For example, in a state where the narrowing-down reproduction is performed by a person, if the person attribute is changed and removed from the person, the object is not displayed. Therefore, when the release of the classification information is reflected immediately, it is necessary to release the narrowed-down reproduction once when it is desired to add the person attribute again. In addition, when a plurality of images such as a multi-display are displayed, the images are switched at the moment when the person attribute is changed, resulting in an uncomfortable feeling in operation. Therefore, when the attribute is removed, such a problem can be prevented by reflecting when the attribute changing process is completed, that is, “performing classification information cancellation when classification information setting is completed”.

[Selection processing]
FIG. 27A is a flowchart showing the selection operation process in step S1723 of FIG. This process starts when the user performs an operation for transitioning to the selection operation process.

  In step S2701, the system control unit 50 displays a process selection screen (process selection screen). This process selection screen is a menu screen as shown in FIG. 28A. With this menu screen, the user can select a process to be performed on an image file from the GUI through the GUI. Examples of selectable processes include a slide show 2801, an erase 2803, a protect 2804, a print 2805, a transmission 2806, and the like. In steps S <b> 2702 to S <b> 2706, the system control unit 50 determines which of slideshow, erasure, protection, printing, and transmission has been selected as the process selection. In steps S 2707 to S 2711, corresponding processing modes (slide show, erase, protect, print, transmission) are set according to the determination of the selected process, and are stored in the system memory 52. If none of the processes is selected and there is a request to end the selection operation, the process ends from step S2712. If no process is selected and there is no request for termination of process selection, the process returns to step S2702.

If the processing mode is selected as described above, the process proceeds to step S2713. In step S <b> 2713, the system control unit 50 displays a selection screen for selecting a selection method on the image display unit 28. This is a screen display as shown in FIG. 28B, and this screen allows the user to select a method for selecting a target (image) to be processed through the GUI. For example, there are the following methods for selecting a target to be processed.
A file selection 2821 for selecting one or more objects from all image files,
Date selection 2822 to select by date
・ Category information selection 2823 to select collectively by classification information,
-Folder selection 2824 for selecting by folder
-Select all 2825 to select all image files.

  In steps S <b> 2714 to S <b> 2718, it is determined which of file selection, date selection, classification information selection, folder selection, and full selection has been selected by a user operation of the operation unit 70. In steps S <b> 2720 to S <b> 2724, the system control unit 50 sets an image file, date, classification information, folder, and all images as selection modes according to the selected method, and stores them in the system memory 52. If no selection method is selected and there is a request to end selection of the selection method, the process ends from step S2719. If no selection method is selected and there is no request for termination of selection of the selection method, the process returns to step S2714. If the selection of the process and the selection method is completed, the selection process is executed in step S2725. The selection process will be described later with reference to FIG. 27B. Then, this process ends. When this process ends, the process returns to the input wait state (step S1701) in FIG.

<About selection processing>
FIG. 27B is a flowchart showing the selection process in step S2725 of FIG. 27A.

  When the selection process is started, the system control unit 50 determines the processing mode stored in the system memory 52 in steps S2741 to S2744. In the system memory 52, the processing mode is stored in any one of steps S2707 to S2711. In steps S2745 to S2749, a selection screen display corresponding to the set processing mode is performed according to the determination results in steps S2741 to S2744. That is, a slide show selection display is performed in step S2745, an erase selection display is performed in step S2746, a protection selection display is performed in step S2747, a print selection display is performed in step S2748, and a transmission selection display is performed in step S2749. In this example, any one of slide show, erase, protect, print, and send is selected as the processing mode. Accordingly, if NO is determined in any of steps S2741 to S2744, it is assumed that “transmission” is set as the processing mode, and transmission selection display is performed in step S2749. FIG. 28C shows an example of the selection display screen.

  Subsequently, if it is determined in step S2750 that there is an image feed operation, image feed is executed in step S2751. In image forwarding, the system control unit 50 performs image forwarding within the image file group in the image data display unit 2844 of the image file group (group) where the cursor 2847 is hit. If there is an image file group switching operation in step S2752, the image file group to be processed is switched in step S2753. By this processing, the image file group to be processed is switched, and the cursor moves. For example, the cursor moves to the image file group indicated by 2848 and becomes a processing target. The image forwarding operation is performed on the image file group that is the processing target. Therefore, when an image forwarding operation is performed while the cursor is on the image file group 2848, the image is forwarded within the image file group 2848, and an image displayed on the image data display unit 2844 of the image file group 2848 is displayed. It will be switched.

  In the present embodiment, for example, an image feed operation is performed with the left and right buttons, and an image file group is switched with the up and down buttons.

  If there is an image file group selection operation in step S2754, the operated image file group is additionally selected as a target image file in the selected processing mode in step S2755. On the other hand, if there is an image file group deselection operation, the process advances from step S2756 to step S2757. In step S2757, the system control unit 50 deselects the operated image file group from the target image files in the selected processing mode. If there is an instruction to complete the selection, the process ends from step S2758. On the other hand, if there is no selection end instruction, the process returns to step S2741 to repeat the above processing. In this way, a plurality of image file groups can be selected for each processing mode.

  FIG. 28C is a diagram showing an example of a selection display screen when a date selection method is selected from the plurality of selection methods. Reference numerals 2841, 2842, and 2843 denote GUI displays representing image file group options on January 22, 2001, image file group options on March 20, 2005, and image file group options on July 10, 2004, respectively. Reference numeral 2848 denotes a display of the number of image files effective as processing targets included in each date. Reference numeral 2847 denotes a cursor indicating an image file group being selected. Reference numeral 2846 denotes a selection instruction GUI that moves together with the cursor. The user can select a plurality of image files collectively by date via the GUI by the operation unit 70. Reference numeral 2844 denotes an image data display unit for displaying image data for each image data group. In the image data display unit 2841 within the date on which the cursor 2847 is placed, the image can be fed within the image file group for each date by the input of the operation unit 70 (S2750, S2751).

  In the present embodiment, the cursor 2847 is moved up and down by the up and down buttons of the operation unit 70 (S2752, S2753). For the image file group on which the cursor 2847 is hit, the image data display unit 2844 can move the image within the image file group with the left and right buttons (S2750, S2751). Thus, the user can select the image file group to be processed while easily confirming the contents of the image file group on the selection display screen. The image file displayed by this image feed will be described later with reference to FIG.

  The user can select an image file group to be processed by pressing the SET button while the cursor 2847 is positioned on an unselected image file group (S2754, S2755). If the cursor 2847 is placed on an image file group that has already been selected for processing and the SET button is pressed, the selected state is released (S2756, S2757). A check mark 2845 indicating the selection is displayed in the selected image file group. A plurality of image file groups can be selected, and the selected image file groups are processed together in step S2726. In the case of other selection modes (classification information selection, folder selection, etc.), the same selection display screen (GUI for selecting an image file group) is displayed.

  FIG. 29 shows an example of an image file effective as a processing target for each selection display screen for each processing. An image file that is effective as a processing target is also an image file that is an image sending target in the image sending operation (S2750, S2751). Further, the number 2848 of image files effective as processing targets is the number of image files selected as processing targets according to FIG.

  For example, in the erasure process, image files with the protect attribute are not subject to the erasure process, so the number displayed on the display 2848 does not include the number of image files with the protect attribute in the image group. That is, only the number of image files having no protection attribute is displayed. By displaying the number of image files that are valid as processing targets for the selection candidate image file group on the selection display screen as shown in FIG. 28C, the user can grasp the number of processing targets and make an appropriate selection. . Of course, at this time, the number of image files included in the image file group but not valid as a processing target, or the total number of image files included in the image file group may be displayed. Further, a display for notifying the user that an image file that is not valid as a processing target is included in the image file group may be performed. Thereby, the user can select the image file group after confirming more accurately.

  In addition, in the image data display unit 2844, only images that are effective as processing targets are displayed in the image forwarding within the image file group. According to FIG. 29, since the target is all image files in the slide show and protect, all the image files in the image file group are targets in the image data display unit 2844, and there is no restriction that cannot be selected. On the other hand, since the image file with the protection attribute is not an object to be erased in the erasure process, only the image file without the protection attribute is the object to be sent.

  Further, in the erasure process, when all the image file groups that the cursor 2847 is in are protected image files, there is no execution target for the erasure process. Therefore, the user is notified that the image file group cannot be selected. This can be expressed, for example, by deactivating the selection instruction GUI 2846. In the printing process, only the still image is printed, so that the image sending target is only the still image file. If the image file group on which the cursor 2847 is positioned is all other than a still image, for example, if it is a moving image or sound, there is no print execution target, so that the user cannot select the image file group as described above. Notify In the transmission process, the transmission target is only the untransmitted image file, and therefore the image transmission target is only the untransmitted image file. When the image file group on which the cursor 2847 is hit is all transmitted image files, since there is no transmission execution target, the user is notified that the image file group cannot be selected as described above. If there is no content, since there is no execution target in any processing mode, the selection instruction GUI for the image file group is deactivated.

  As described above, by selecting the processing target after selecting the processing and setting the processing mode, it is possible to display the number of image files that are valid as the processing target according to the preset processing content, and to select the image file group Judgment of acceptability and determination of image sending target are performed. As a result, it is possible to allow the user to select an appropriate processing target without selecting an image file group having no processing target or displaying image data of an image file that is not a processing target.

[About file management]
FIG. 30A is a flowchart showing the image file management process in step S302 of FIG. The system control unit 50 clears the latest image confirmation flag recorded in the system memory 52 in step S3001, clears the total file number confirmation flag in step S3002, and clears the search permission flag in step S3003. In step S3004, the system control unit 50 issues an image search start instruction to an image search process that is processed in parallel with the operation according to the operation flow illustrated in FIG. Then, this process ends.

<Image search processing>
FIG. 30B is a flowchart showing the image search process executed in response to the image search start instruction in S3004 of FIG. 30A.

  If there is an instruction to start image search, the process proceeds from step S3011 to step S3012. In step S3012, the system control unit 50 creates a reproduction target directory list. For example, in a playback device in accordance with the DCF standard, the directory entry of the DCF root directory is analyzed to search for the DCF directory, and is added to the playback target directory list. In step S3013, the system control unit 50 determines whether the reproduction target directory exists. When it is determined that there is no reproduction target directory (that is, when there is no directory or file that can be handled by the digital camera 100), the system control unit 50 sets the total number of files to 0 in step S3023. In step S3022, the total file number determination flag is set to 1, and this process ends.

  On the other hand, if it is determined in step S3013 that there is a reproduction target directory, the system control unit 50 initializes the image search target directory in step S3014. In this initialization, for example, in a DCF standard playback device, the DCF directory with the largest number is set as the image search target directory. In step S3015, the system control unit 50 calculates the total number of images in the directory set as the image search target by analyzing the directory entry of the directory. Then, the total number of images in the directory is added to the total number of images in the recording medium 200.

  In step S3016, the system control unit 50 acquires file information described in the directory entry of the DCF root directory. Specifically, the minimum file number, maximum file number, total file number, total time stamp, total file size, total number of files, and the like are acquired. These are stored in the memory 52 as directory entry information.

  In step S3017, it is determined whether there is a reproduction target image file (that is, a file that can be handled by the digital camera 100). If it is determined that there is a reproduction target image, the system control unit 50 determines the latest image and sets the latest image determination flag to 1 in step S3018. If there is an instruction to end the total calculation by operating the end button or the like, the process proceeds from step S3020 to step S3022, and the process is interrupted and exited. In this case, the process may be terminated without setting the confirmation flag.

  If there is no instruction to end the total number calculation, it is determined in step S3021 whether an unprocessed directory exists. If it is determined that it exists, the image search target directory is set as an unprocessed directory in step S3019, and the process returns to step S3015. In this way, the processes in steps S3015 to S3018 are performed on all the directories in the reproduction target directory list created in step S3012. When the processes of steps S3015 to 3018 are finished for all directories, the process proceeds to step S3022. In step S3022, the system control unit 50 notifies the latest image determination, calculates the total number of images, sets the total file number determination flag, and exits the process. Note that the setting of the latest image determination flag (steps S3017 and S3018) may not be executed after the latest image determination flag is set.

  Even if the reproduction target directory exists, if there is no reproduction target image in the directory, the total number of files confirmation flag is set as 0 for the total number of images, and the process is exited.

[About search management processing]
FIG. 31A is a flowchart showing the flow of the search management process in S1507 of FIG. If there is an instruction to create a search list in step S1507, the process proceeds from step S3101 to step S3103. In step S3103, the system control unit 50 confirms the presence / absence of an unreliable directory. If the reliability has been confirmed for all reproduction target directories, the process advances from step S3103 to step S3115 to set the search permission flag = 1 in the system memory 52, and the process ends.

  On the other hand, if it is determined in step S3103 that there is a directory whose reliability has not been confirmed, the system control unit 50 sets the directory as a target directory whose reliability should be confirmed in step S3104. In step S3105, the system control unit 50 determines whether a search management file corresponding to the target directory exists in the recording medium 200. If it is determined that the file exists, the system control unit 50 reads the search management file into the system memory 52 in step S3106. In step S <b> 3107, the system control unit 50 confirms reliability described later with respect to the search management file read in step S <b> 3106. As a result of the confirmation, if it is determined that all data is reliable, the process proceeds from step S3108 to step S3114, and the target directory reliability confirmed storage process is performed. Then, the process proceeds to step S3102, and it is confirmed whether or not there is an instruction to interrupt the search list creation.

  On the other hand, as a result of the reliability check process in step S3107, if it is determined that some data is not reliable, or if it is determined in step S3105 that there is no search management file, the process proceeds to step S3111. move on. In step S <b> 3111, the system control unit 50 generates a search management file for all data in the directory as a reexamination target.

  Also, as a result of the reliability check process in step S3107, if the reliability is confirmed only for a part of the data, the process proceeds from step S3109 to step S3110. In step S <b> 3110, the system control unit 50 sets partial data whose reliability has not been confirmed as a retest target. In step S3112, search management file generation is performed for the file set as the reexamination target.

  If the generation of the search management file in step S3112 is completed, the system control unit 50 writes the generated search management file to the recording medium 200 in step S3113. For example, as shown in FIG. 9, a directory (OANONMSC) for storing the search management file is generated, and the generated search management files (M100.CTG, M101.CTG) are stored in the directory. In the present embodiment, as shown in FIG. 9, a search management file is generated and stored for each directory. For example, M100.CTG is a search management file in the directory 100OANON, and M101.CTG is a search management file in the directory 101OANON. In step S3114, the fact that the corresponding directory has been confirmed for reliability is stored in the system memory 52, and the process proceeds to step S3102.

  If it is determined in step S3102 that there is an instruction to interrupt search list creation, the process returns to step S3101 and waits for an instruction to create a search list again. On the other hand, if it is determined in step S3102 that there is no instruction to interrupt search list creation, the process proceeds to step S3103, and the above-described series of processing is continued until there is no directory whose reliability has not been confirmed. When the processing is completed for all the reproduction target directories, the processing proceeds from step S3103 to step S3115, and the system control unit 50 sets a search permission flag and ends the processing.

<Reliability confirmation processing>
FIG. 31B is a flowchart showing the reliability confirmation processing in step S3107 of FIG. 31A. An example of the search management file according to this embodiment is shown in FIG.

  First, in step S3141, the system control unit 50 checks the consistency of the search management file read from the recording medium 200 to the system memory 52 in step S3106. This is performed by the management file reliability information 3202. The management file reliability information 3202 is not the search information in the search management file, such as the management file version, the management file size, and the management file checksum, but is the consistency information of the search management file itself. It becomes confirmation of. The management file reliability information 3202 can further use a time stamp, a hash value, or the like. If the consistency cannot be confirmed here, it is determined in step S3150 that there is no data reliability, and the process is exited. As described above, it is possible to prevent a situation in which a normal search cannot be performed due to falsification of the search management file.

  If the consistency of the search management file has been confirmed in step S3141, the process proceeds to step S3142. In step S3142, the system control unit 50 acquires the directory entry information stored in the system memory 52 in step S3016 of the above-described image search process (FIG. 30B). In step S3143, the system control unit 50 compares the directory entry information described in the search management file (step S3106) read from the recording medium 200 with the directory entry information acquired in step S3016. Here, comparison is made using information indicating the structure of the target directory, such as the minimum file number, maximum file number, total file number, total time stamp, total file size, and total number of files, as shown in the reliability confirmation information 3201. Is done. In this embodiment, the file number is used as entry information assuming the DCF standard, but of course the file name, the sum of the character codes of the file name, the hash value of the directory entry on the recording medium, etc. may be used as the directory entry information. .

  If the two pieces of information are the same, the process proceeds from step S3144 to step S3151, and the system control unit 50 determines that all data is reliable and exits the process. That is, it is possible to prevent a situation in which a normal search cannot be performed due to a change in the file itself in the target directory or a change in the file structure.

  On the other hand, as a result of the comparison in step S3143, if it is determined that the information is not the same, the process proceeds to step S3152. In step S3152, the system control unit 50 determines whether there is a file that exists only in the management file. If it is determined in step S3152 that there is a file that exists only in the management file, the process proceeds to step S3150. If it is determined in step 3152 that there is no file that exists only in the management file, the process proceeds to step S3145. In step S3145, the system control unit 50 determines whether there is a common file that exists in both the management file and the directory entry information. If it is determined that there is a common file, the system control unit 50 acquires directory entry information of the common file unit from the recording medium in step S3146. The common file portion refers to all common files existing in the directory. In step S3147, the common file portion is compared with the directory entry information described in the search management file. In the comparison using the entry information, a time stamp, file size, file name, protect attribute, hidden attribute, archive attribute, or the like can be used. If it is determined that the directory entry information is the same in the common file, the process proceeds from step S3148 to step S3149. In step S <b> 3149, the system control unit 50 exits the process assuming that some data is reliable. For example, if an image is added to the recording medium 200 by a personal computer or the like and the power is shut off before the image is reflected in the retrieval management file of the photographed image information in the digital camera 100, information on only a part of the files is managed. There are cases where it is not listed in the file. According to the present embodiment, even in such a case, data that has already been confirmed to be reliable can be used effectively.

  If it is determined in step S3145 that there is no common file, or if it is determined in step S3148 that the information in the common file portion is not the same, it is determined that there is no data reliability in step S3150, and the process is terminated.

  According to the search management processing described above, it is possible to automatically reconstruct the management file by detecting a change in the configuration of the management target file in the recording medium 200 and a change in the management target file itself. Further, since the management target file configuration in the recording medium is changed and the change of the management target file is detected based on the data described in the directory entry (S3142, S3143), it can be executed at high speed without referring to the contents of the file. In addition, since the management file is reconstructed only for the directory where the management target file structure in the recording medium has been changed or the management target file has been detected to be changed, the management file should not be changed to a directory that has not been changed. There is no need to reconstruct (S3104 to S3114).

  If there is no change in the common file, the management file information of the common file is used as it is (S3145 to S3149, S3110, S3112). For this reason, when a file is added to a directory other than this device, or when the device is turned off before the management file is updated by adding a file to the directory on this device, It can be used effectively. Also, in the management file reconstruction, if there is no change in the common file, the management file that is not duplicated in the directory where the management file configuration change or the management file change is detected in the recording medium is detected. Only done. For this reason, it is not necessary to reconstruct file information that has already been constructed, and only a file for which addition has been detected can be reinspected.

  Further, since the confirmation of reliability includes performing the process by describing the file attribute (3202 in FIG. 32) of the management file in the management file and collating it (S3141), it becomes possible to detect falsification of the management file itself. , Prevent incorrect management. Further, since the falsification confirmation of the management file itself is information on the management file itself and its own directory entry, the management file itself can be confirmed at high speed (S3143 to S3148, 3201, 3203 to 3206 in FIG. 32).

<Search management file generation>
FIG. 31C is a flowchart showing search management file generation processing in step S3112 of FIG. 31A. Hereinafter, the search management file generation processing will be described with reference to the flowchart of FIG. 31C and the search management file of FIG.

  When the search management file generation process is started, first, in step S3161, the system control unit 50 sets an analysis file. This is an unanalyzed file in this process among all the files in the directory set by the search management process (FIG. 31A) or a part of the files whose reliability could not be confirmed.

  Next, in step S3162, the system control unit 50 determines whether or not the attribute information of the analysis target file exists in the cache area in the memory 52. This cache information is held in the cache area of the memory 52, for example, when an image is taken. If it is determined that there is cache information, the system control unit 50 acquires information described in the search management file from the cache information in step S3153, and generates and describes information described in the search management file in step S3168. . This is file information such as 3203 in FIG. 32, which includes classification information, shooting information, subject information, and the like, and is stored in association with information for specifying the file. Note that a file name, a file number, and the like may be described in the list as information for specifying the file. Moreover, you may make it link with a file by the arrangement | sequence order of a list.

  On the other hand, if it is determined in step S3162 that there is no attribute information in the cache, the process proceeds to step S3164. In step S3164, the system control unit 50 reads the target file from the recording medium 200. In step S3165, it is determined whether the target file has a file header in which attribute information is described. When it is determined that there is a file header, the system control unit 50 acquires shooting information in step S3166, and acquires classification information and the like in step S3167. In step S3168, information to be written in the search management file is generated and written in the search management file.

  On the other hand, when it is determined in step S3165 that there is no file header, the system control unit 50 writes information to that effect in the management file in step S3168.

  As described above, the attribute information of the analysis file is registered in the management file in step S3168. In step S3169, the system control unit 50 checks whether or not there is an unanalyzed file. If there is an unanalyzed file, the system control unit 50 returns the process to step S3161, and sets the unanalyzed file as an analyzed file and repeats the above process. When the analysis of all the request files is completed, the system control unit 50 ends the process. Note that all request files refer to all files set as re-inspection targets in steps S3110 and S3111.

  As described above, since the attribute information existing on the cache during shooting or the like does not read and analyze the file in the recording medium again, the search management file can be constructed at high speed.

  According to the above-described reliability confirmation process, for example, when the classification information setting process (S1711) or the image erasing process (S1713) is performed before the reliability confirmation is performed, the target image file is removed from the management target. It becomes possible. That is, in the file management process started in step S302, the target image file is excluded from the target of the image file managed in this system.

  When the image file in the recording medium 200 is searched to determine the total number, classification information setting (S1710, S1711) and image erasing (S1712, S1713) can be performed. Meanwhile, the reliability confirmation process (S3107) of the search management file in the recording medium 200 operates in parallel.

  First, the case where the image file before the reliability confirmation is erased will be described. In this case, the directory entry of the directory to which the image file belongs is updated as the image file is deleted. Accordingly, inconsistency occurs between the reliability confirmation information 3201 described in the search management file and the directory entry, and the process proceeds from step S3144 to step S3152 in the reliability confirmation process of FIG. 31B. Since the deleted image file does not exist in the directory entry, the image file exists only in the search management file. For this reason, it is determined that the data of the search management file is not reliable (S3150), and all the data is set as a reexamination target and the search management file is generated (S3111, S3112).

  Next, a case where the classification information is changed for the image file before the reliability check is performed will be described. Also in this case, the directory entry (time stamp or the like) of the directory to which the image file belongs is updated in accordance with the change of the image file classification information. Accordingly, inconsistency occurs between the reliability confirmation information 3201 described in the search management file and the directory entry, and the process proceeds from step S3144 to step S3152 in the reliability confirmation process of FIG. 31B. Since the image file is not erased by changing the classification information, an image file that exists only in the search management file does not occur. However, since the classification information is changed, there is a mismatch between the directory entry and the image file that exists in common in the search management file with respect to the image file. Therefore, the process proceeds from step S3148 to step S150, and it is determined that the data of the search management file is not reliable. As a result, all data is set as a reexamination target, and a search management file is generated (S3111, S3112).

  As described above, image files that have been deleted or changed in classification information before reliability confirmation are excluded from the target of image files managed in this system.

[About file analysis processing]
Next, the file analysis processing in step S1504 in FIG. 15, steps S1704 and S1717 in FIG. 17, and step S2508 in FIG. 25A will be described. FIG. 33 is a flowchart showing the file analysis process.

  In step S3301, the system control unit 50 determines whether the file to be analyzed includes a file header in which attribute information such as shooting information and classification information is described. If it is determined that there is such a file header, the system control unit 50 acquires shooting information from the file header in step S3302, and acquires classification information and the like from the file header in step S3303. In step S3304, the system control unit 50 acquires image data body information such as an image body start position and an image compression method.

  In step S3305, the system control unit 50 determines whether the above-described shooting information, classification information, image information, and the like are the same as the contents of the search management file. If it is determined that they are the same, the process is directly exited. On the other hand, if it is determined in step S3305 that there is a difference, the system control unit 50 updates the corresponding file information of the search management file in step S3306, and writes the search management file to the recording medium 200 in step S3307. Then, this process is finished.

  As described above, when the file is read for image playback and the header is analyzed, the search management file is collated in units of files at the same time, and detailed search management file matching is performed without additional processing time. And correction becomes possible. Even when falsification of the management file itself or change of the management target file cannot be detected, the management file can be reconstructed to a correct value.

  Although the present invention has been described above with a digital camera, the application of the present invention is not limited to this, and the present invention can be applied to an apparatus capable of reproducing an image, such as a mobile phone or a mobile terminal.

The present invention is also applicable to a case where a software program that implements the functions of the above-described embodiments is supplied from a recording medium directly to a system or apparatus having a computer that can execute the program using wired / wireless communication and the program is executed. Included in the invention.
Accordingly, the program code itself supplied and installed in the computer in order to implement the functional processing of the present invention by the computer also realizes the present invention. That is, the computer program itself for realizing the functional processing of the present invention is also included in the present invention.
In this case, the program may be in any form as long as it has a program function, such as an object code, a program executed by an interpreter, or script data supplied to the OS.

  As a recording medium for supplying the program, for example, a magnetic recording medium such as a flexible disk, a hard disk, a magnetic tape, MO, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD- RW etc. can be considered. Further, it may be an optical / magneto-optical storage medium or a nonvolatile semiconductor memory.

  As a program supply method using wired / wireless communication, the following method can be considered. That is, a computer program itself or a program data file forming the present invention is stored in a server on a computer network, and the program data file is downloaded to a connected client computer. Here, the program data file includes a file compressed with a computer program forming the present invention and including an automatic installation function. In this case, the program data file can be divided into a plurality of segment files, and the segment files can be arranged on different servers. That is, the present invention includes a server device that allows a plurality of users to download a program data file for realizing the functional processing of the present invention on a computer.

  In addition, the program that realizes the functions of the above-described embodiment is encrypted, stored in a storage medium, distributed to the user, and the key information to be decrypted is downloaded via the network to the user who satisfies a predetermined condition. It is also possible to use a method that supplies the product. By using the key information, the encrypted program can be executed and installed in a computer to realize the present invention.

  The functions of the above-described embodiment are realized by executing the program code supplied by the computer. The program code is also included in the embodiment of the present invention when the function of the above-described embodiment is realized in cooperation with an OS (operating system) or other application software running on the computer. included.

  Furthermore, the present invention includes the case where the supplied program code is stored in a memory provided in a function expansion board of a computer or a function expansion unit connected to the computer. Further, when the CPU of the function expansion board or function expansion unit performs part or all of the actual processing based on the instruction of the program code, and the functions of the above-described embodiments are realized by the processing. It goes without saying that it is included in the present invention.

1 is an external view of a digital camera as an example of an imaging apparatus according to an embodiment. It is a block diagram which shows the structure of the digital camera by embodiment. 3 is a flowchart showing an overall operation of the digital camera 100. 3 is a flowchart showing a series of processes in a still image recording mode of the digital camera 100. It is a flowchart explaining a face detection process. 3 is a flowchart illustrating a photographing process of the digital camera 100. 4 is a flowchart illustrating a recording process on the recording medium 200 of the digital camera 100. 4 is a flowchart illustrating header generation processing of the digital camera 100. 3 is a diagram illustrating an example of a file structure recorded on a recording medium 200. FIG. 3 is a diagram illustrating a configuration example of a still image file recorded on a recording medium 200. FIG. 3 is a flowchart showing moving image recording processing of the digital camera 100. 3 is a diagram illustrating a configuration example of a moving image file recorded on a recording medium 200. FIG. 4 is a flowchart showing thumbnail recording processing of the digital camera 100. 3 is a flowchart illustrating a reception process of the digital camera 100. 3 is a flowchart showing a playback process of the digital camera 100. It is a flowchart which shows the process at the time of no image in reproduction | regeneration processing. It is a flowchart which shows the process of reproduction | regeneration input waiting in reproduction | regeneration processing. 5 is a flowchart showing editing processing of the digital camera 100. 4 is a flowchart showing processing of a jump mode of the digital camera 100. 4 is a flowchart showing information display processing when the digital camera 100 is in a jump mode. 4 is a flowchart showing jump mode switching processing when the digital camera 100 is in jump mode. 6 is a flowchart showing jump execution processing when the digital camera 100 is in jump mode. 6 is a flowchart showing a single image feeding process when the digital camera 100 is in a jump mode. 4 is a diagram showing a display screen of a jump mode of the digital camera 100. FIG. 6 is a diagram showing a display on an information display unit when the digital camera 100 is in a jump mode. FIG. 6 is a diagram showing a display on an information display unit when the digital camera 100 is in a jump mode. FIG. 4 is a flowchart showing graph display processing when the digital camera 100 is in jump mode. It is a figure which shows the example of a graph display in an information display part. It is a figure which shows the example of a graph display in an information display part. It is a figure which shows the example of a graph display in an information display part. 5 is a flowchart showing a narrowing playback mode process of the digital camera 100. 6 is a flowchart illustrating processing for canceling a narrowing playback mode of the digital camera 100. 6 is a flowchart illustrating a narrowing information display process when the digital camera 100 is in a narrowing playback mode. 4 is a flowchart showing information display processing of slide show processing of the digital camera 100. It is a figure which shows an example of the slide show menu screen in a slide show process. It is a figure which shows an example of the attribute information selection menu screen in a slide show process. 6 is a diagram illustrating a screen display example when the digital camera 100 shifts to a narrowed playback mode. FIG. FIG. 6 is a diagram illustrating a screen display example when the digital camera 100 is released from a narrowed playback mode. 6 is a diagram illustrating an example of an information display screen when the digital camera 100 is in a narrowed playback mode. FIG. 6 is a diagram illustrating an example of multi-playback display during narrowed playback of the digital camera 100. FIG. 5 is a flowchart showing classification information setting processing of the digital camera 100. 5 is a flowchart showing classification information attribute writing processing of the digital camera 100. FIG. 6 is a diagram showing an example of a display screen at the time of classification information setting processing of the digital camera 100. 3 is a flowchart showing a selection operation process of the digital camera 100. 3 is a flowchart showing selection processing of the digital camera 100. 6 is a diagram showing an example of a display screen when a processing mode is selected in the selection operation process of the digital camera 100. FIG. 6 is a diagram showing an example of a display screen when a selection method is selected in the selection operation process of the digital camera 100. FIG. 6 is a diagram illustrating an example of a display screen in a selection process of the digital camera 100. FIG. 3 is a diagram showing a list of selection operation targets for each processing mode of the digital camera 100. FIG. 3 is a flowchart illustrating image management processing of the digital camera 100. 3 is a flowchart showing image search processing of the digital camera 100. 3 is a flowchart showing search management processing of the digital camera 100. 3 is a flowchart showing a reliability confirmation process of the digital camera 100. 5 is a flowchart showing search management file generation processing of the digital camera 100. 6 is a diagram showing an example of a search management file structure recorded on a recording medium 200. FIG. 4 is a flowchart illustrating file analysis processing of the digital camera 100.

Claims (15)

An image reproduction device for classifying and displaying a plurality of image files recorded on a recording medium based on classification information added to the image file,
A specifying means for specifying classification information as a search key;
Search means for searching an image file to which the same classification information as the classification information specified by the search key by the specifying means is added from a plurality of image files recorded on the recording medium;
Display control means for displaying the image file searched by the search means on a display screen and displaying a display representing the classification information designated by the search key at a first position on the display screen. A featured image reproduction apparatus.   2. The image reproducing apparatus according to claim 1, further comprising a narrowed-down display unit that displays an image file group including only image files searched by the search unit as a display target by the display control unit.   The image reproduction apparatus according to claim 1 or 2, wherein the display control means displays the classification information designated by the search key by an icon.   When other classification information is added to the displayed image file, the display control means displays a display representing the other classification information at a second position different from the first position. The image reproducing apparatus according to claim 1.   The display control means displays the classification information by icon display, and displays the icon color corresponding to the classification information specified by the search key different from the icon color corresponding to other classification information. The image reproducing apparatus according to claim 4, wherein   The display control means displays the classification information by icon display, and displays the size of the icon corresponding to the classification information designated by the search key different from the size of the icon corresponding to the other classification information. The image reproducing apparatus according to claim 4, wherein: The display control means includes
Single playback for displaying image files to which classification information designated by the search key is added one by one and multi playback for simultaneously displaying a plurality of files can be executed.
During single playback, the classification information specified in the search key and the other classification information are displayed,
7. The image reproducing apparatus according to claim 4, wherein during the multi-reproduction, display of the other classification information is prohibited and only the classification information designated by the search key is displayed.   7. The image reproducing apparatus according to claim 4, wherein the display indicating the classification information is displayed in a list in an up-and-down direction, and the first position is the highest position in the list display. A total number calculating means for calculating the total number of image files searched by the searching means;
9. The image reproducing apparatus according to claim 1, wherein the display control unit displays the total number of image files calculated by the total number calculating unit together with the image files. Sorting means for sorting the image files searched by the search means according to a predetermined rule;
A position calculating means for calculating the position in the image file sorted by the sorting means of the image file to be displayed by the display control means;
The image reproduction apparatus according to claim 1, wherein the display control unit displays the position calculated by the position calculation unit together with the image file.   The image reproducing apparatus according to claim 1, further comprising a first notification unit that displays guidance on a display cancellation method by the narrowing-down unit on the display screen at the start of display by the narrowed-down display unit.   12. The image reproducing apparatus according to claim 2, further comprising a second notification unit that displays on the display screen to notify the user when the display by the narrowed display unit is canceled. .   The narrowed-down display means targets all image files recorded on the recording medium when another search key is designated by the designation means during execution of display based on the designated search key. The image reproducing apparatus according to claim 2, wherein a search unit and the display control unit function.   The narrowed-down display means, when executing a display based on the designated search key, when another search key is designated by the designation means, the search means and image files belonging to the image file group as targets. The image reproduction apparatus according to claim 1, wherein the display control unit functions. A method for controlling an image reproducing apparatus for classifying and displaying a plurality of image files recorded on a recording medium based on classification information added to the image file,
A specification process for specifying classification information as a search key;
A search step for searching an image file to which the same classification information as the classification information specified by the search key in the specifying step is added from a plurality of image files recorded on the recording medium;
A display control step of displaying the image file searched by the search step on a display screen and displaying a display representing the classification information designated by the search key at a first position on the display screen. A control method for an image reproducing apparatus.

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