JP4804270B2 - Image playback device - Google Patents

Description

  The present invention relates to an image reproducing apparatus for reproducing an image recorded on a storage medium and an image reproducing method in the image reproducing apparatus.

  Today, digital cameras are widely used, and images taken with digital cameras and images taken from personal computers (hereinafter referred to as PCs) are recorded on various recording media by a recording device such as a digital camera or a PC. The image recorded on the recording medium is reproduced by various image reproducing apparatuses such as a digital camera and a PC for the purpose of browsing, editing, and organizing. In this playback, when playback is stopped once and playback is performed next time, playback is started from an image that has been played back last time, so-called playback resume may be convenient.

  According to Japanese Patent Laid-Open No. 2000-311420, a disc playback method is proposed in which identification information of a recording medium and a playback position at a stop time are stored and playback is resumed based on the stored information.

On the other hand, it remembers the file name of the image when it was last played and resumes playback according to the change, or remembers the number of images in the storage medium and resumes playback according to the change. Something is happening.
JP 2000-311420 A

  However, according to the invention disclosed in Japanese Patent Laid-Open No. 2000-311420, it is not assumed that there is a change in the capacity of the recording medium, and it is not preferable to perform a playback resume when there is a change in the capacity of the recording medium. The device could not determine the case. On the other hand, the method of remembering the file name and the number of images and resuming playback according to the changes makes it difficult to identify the last image displayed last time, the change in the capacity of the recording medium, or the recording medium In some cases, the change in the recording medium could not be accurately identified, for example, when the solid itself was replaced.

In the present invention, good Ri high reliability reproduction Reju - and to provide an image reproducing apparatus for a beam.

Setting means for setting whether or not to perform resume playback from the last played back image when playing back an image based on an operation from the user;
A medium information which is information related to the capacity of the recording medium when the completion of the reproduction of the images, and recording control means for controlling so as to record the resume file information is information indicating the last reproduced picture during the reproduction ,
And capacity change determining means for determining capacity change there Luke not before type recording medium based on the previous SL media information when reproducing an image,
When replaying an image, the resume file information is set when the resume reproduction is set by the setting means and the capacity change determining means determines that there is no change in the capacity of the recording medium. Therefore, control to play the image shown,
When reproducing the image, the setting means is not set to perform the resume reproduction, and the setting means is set to perform the resume reproduction, and the capacity change determining means sets the recording medium. Control means for controlling to reproduce the latest image recorded on the recording medium when it is determined that there is a change in capacity;
Have
When the playback screen of the last played image at the time of playback is a multi-display in which a plurality of images are displayed on one screen, the resume file information is used as information indicating the last selected image at the time of playback. Recording and reproduction of an image indicated by the resume file information when reproducing the image is also performed in a multi-display, and an image indicated by the resume file information among a plurality of multi-displayed images is displayed in a recognizable manner. Features .

According to the present invention, good Ri high reliability reproduction Reju - it can be a beam.

  FIG. 1 shows an external view of a digital camera as an example of the image reproducing apparatus of the present invention. In FIG. 1, reference numeral 28 denotes a display unit for displaying images and various information. Reference numeral 72 denotes a power switch for switching between power on and power off. 61 is a shutter button. Reference numeral 60 denotes a mode switching unit for switching various modes. Reference numeral 111 denotes a connection cable for connecting the digital camera and an external device. Reference numeral 112 denotes a connector between the connection cable 111 and the digital camera. An operation unit 70 receives various operations from the user. Reference numeral 200 denotes a recording medium such as a memory card or a hard disk. Reference numeral 201 denotes a recording medium slot for storing and communicating with the recording medium 200.

  FIG. 2 is a block diagram showing a configuration example of a digital camera as an example of the image reproducing apparatus of the present invention. 10 is a photographing lens, 12 is a shutter having an aperture function, 14 is an image sensor such as a CCD or CMOS sensor that converts an optical image into an electrical signal, and 16 is an A / A that converts an analog signal output of the image sensor 14 into a digital signal. D converter.

  The image processing circuit 20 performs predetermined pixel interpolation processing and color conversion processing on the data from the A / D converter 16 or the data from the memory control circuit 22.

  The memory control circuit 22 controls the A / D converter 16, the timing generation circuit 18, the image processing circuit 20, the image display memory 24, the D / A converter 26, the RAMRAM 30, and the compression / decompression circuit 32.

  The output data of the A / D converter 16 is sent to the image display memory 24 or the RAM 30 via the image processing circuit 20 and the memory control circuit 22, or the output data of the A / D converter 16 is directly sent to the image display memory 24 or the RAM 30 via the memory control circuit 22. Written.

  Display image data written in the image display memory 24 is displayed on a display unit 28 such as an LCD or an organic EL display via a D / A converter 26.

  The display unit 28 can arbitrarily turn on / off the display according to an instruction from the system control circuit 50. When the display is turned off, the power consumption of the digital camera 100 can be significantly reduced. .

  The RAM 30 is a storage device that stores captured still images and moving images, and images read from other storage media such as the storage medium 200 and the nonvolatile memory 56. The RAM 30 is also used as a work area for the system control circuit 50.

  The compression / decompression circuit 32 reads an image stored in the RAM 30, performs a known data compression process or expansion process, and writes the processed data to the RAM 30. The data written in the RAM 30 after the processing is further resized to a size suitable for image display by the system control circuit 50 and written in the image display memory 24.

  The system control circuit 50 is a CPU, for example, and controls the entire digital camera 100 by executing a program stored in the memory 52. The memory 52 stores constants, variables, programs, etc. for operating the system control circuit 50.

  The nonvolatile memory 56 is an electrically erasable / recordable memory, and for example, an EEPROM or the like is used.

  The mode switching unit 60, the first shutter switch SW 1 (62), the second shutter switch SW 2 (64), and the operation unit 70 are operation means for inputting various operation instructions to the system control circuit 50.

  The mode switching unit 60 can switch and set, for example, a still image shooting mode, a moving image shooting mode, and a playback mode.

  The first shutter switch SW <b> 1 (62) is turned on while the shutter button 61 provided in the digital camera 100 is being operated (half-pressed). When the first shutter switch SW1 (62) is turned on, the start of operations such as AF (autofocus) processing, AE (automatic exposure) processing, AWB (auto white balance) processing, and EF (flash pre-flash) processing is instructed.

  The second shutter switch SW2 (64) is turned on when the operation of the shutter button 61 is completed (fully pressed), and starts a series of imaging processing operations from reading a signal from the imaging device 14 to writing image data on the recording medium 200. Instruct.

  When the second shutter switch SW2 (64) is turned on, the image sensor 14 photoelectrically converts the subject image connected via the photographing lens 10 and the shutter 12 and outputs analog image data. Image data output from the image sensor 14 is converted into a digital signal by the A / D converter 16. Image data that has passed through the A / D converter 16 is subjected to predetermined signal processing by the image processing circuit 20 and temporarily recorded in the RAM 30. The image data recorded in the RAM 30 is subjected to a well-known compression process in the compression / decompression circuit 32 under the control of the system control circuit 50 and is recorded in various recording media such as a recording medium 200 described later.

  The operation unit 70 includes various buttons and a touch panel. Specific examples are as follows. Menu button, set button, macro button, multi-screen playback page break button, flash setting button, single / continuous / self-timer switching button, menu move + (plus) button, menu move-(minus) button. Playback image move + (plus) button, playback image-(minus) button, shooting image quality selection button, exposure compensation button, date / time setting button. A selection / switching button for setting selection and switching of various functions, and a determination / execution button for setting determination and execution of various functions. An image display ON / OFF switch for setting ON / OFF of the display unit 28. Quick review ON / OFF switch that sets a quick review function that automatically plays back image data taken immediately after shooting. A TELE / WIDE lever button that switches between single-screen display and multi-screen display that adjusts the zoom and wide angle during shooting, or adjusts the enlargement / reduction during playback. A compression mode switch for selecting a compression rate for JPEG (Joint Photographic Expert Group) compression, or for selecting a CCD RAW mode in which a signal from an image sensor is directly digitized and recorded on a recording medium.

  The power switch 72 switches between power on and power off.

  The power supply control unit 80 detects whether or not a battery is attached, the type of battery, and the remaining battery level, and based on the detection result and instructions from the system control circuit 50, each unit including a recording medium for a necessary period of time To supply.

  The power source 86 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, or an AC adapter, and is attached to the digital camera 100 by connectors 82 and 84.

  A recording medium 200 such as a memory card or a hard disk has a recording unit 202 composed of a semiconductor memory, a magnetic disk, or the like, an interface 204 with the digital camera 100, and a connector 206. The recording medium 200 is attached to the digital camera 100 via a medium-side connector 206 and a digital camera 100-side connector 92. An interface 90 is connected to the connector 92. Whether or not the recording medium 200 is attached is detected by the recording medium attachment / detachment detection unit 98.

  In the present embodiment, the digital camera 100 is described as having one interface and connector for attaching a recording medium. However, any number of interfaces and connectors for attaching a recording medium can be provided. Different standard interfaces and connectors may be used for each system.

  The barrier 102 covers the imaging unit including the lens 10 of the digital camera 100 to prevent the imaging unit from being dirty or damaged.

  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.

(Description of operation)
Hereinafter, the operation of the digital camera 100 of the present embodiment will be described. 3, 4, 7, and 8 are all realized by the system control circuit 50 reading the program according to the present invention stored in the memory 52 to the RAM 30 and performing arithmetic processing and control.

<Example 1>
FIG. 3 shows 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 circuit 50 initializes flags, control variables, and the like in S301. In step S <b> 302, file search processing in the storage medium is performed, and the latest image related information is read into the RAM 30. Next, in step S303, the system control circuit 50 determines the set position of the mode switching unit 60. If the reproduction mode is set, the process proceeds to step S304. Details of the reproduction mode processing in S304 will be described later with reference to FIG. In S303, if the mode switching unit 60 is set to another mode, the process proceeds to S305, and the system control circuit 50 executes a process according to the selected mode, and if the process is completed, the process proceeds to S306. Here, the other modes include, for example, a shooting mode, and the above-described imaging processing and the like are performed in the shooting mode.

  In S306, the system control circuit 50 determines the set position of the power switch 72. If the power switch 72 is set to power-on, the process returns to S303. If the power switch 72 is set to power off in S306, the process proceeds to S307 to perform a predetermined end process. The termination process includes the following process. The display on the display unit 28 is changed to the end state, and 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 is completed, the process proceeds to S308 and the process is terminated.

  The playback mode process in S304 in the first embodiment will be described with reference to FIG.

  In S 401, the free space of the recording medium 200 at this time and the media information at the end of the previous reproduction are acquired from the storage medium 200 and read out to the RAM 30. The media information is information relating to the free capacity and used capacity of the recording medium 200 at the end of the previous reproduction. A specific example will be described later. The media information acquired in S402 is compared with the free space of the recording medium 200 at this time, and it is determined whether or not there is a change in the free space of the recording medium 200 since the end of the previous reproduction. If it is determined that there is a change, the process proceeds to S415, and the latest one (hereinafter referred to as the latest image) of the images recorded on the recording medium 200 based on the latest image related information read into the RAM 30 in S303 is displayed on the display unit 28. indicate. Here, the newest image is displayed because it is often convenient for the user not to perform the playback resume in the next playback in which the recording medium 200 has changed. The reason for this will be described later. If it is determined in S <b> 402 that there is no change in the free space of the recording medium 200, the process proceeds to S <b> 403, and resume file information is acquired from the nonvolatile memory 56 and read into the RAM 30. The resume file information is information indicating an image displayed at the end of the previous reproduction. A specific example will be described later. In S404, it is determined whether or not an image (hereinafter referred to as a resume image) indicated by the resume file information exists on the recording medium 200. If it is determined that the resume image does not exist, the process proceeds to S415, and the latest image is read from the recording medium 200 and displayed on the display unit 28.

  If it is determined in S404 that the resume image exists on the recording medium 200, the process proceeds to S405, where the resume image is read from the recording medium 200 and displayed on the display unit 28. That is, the system control circuit 50 reads the image indicated by the resume file information into the RAM 30, performs the above-described processing by the compression / decompression circuit 32, and displays it on the display unit 28 via the image display memory and the D / A converter 26. . The image displayed in S405 is the last image displayed at the time of the previous reproduction, and here, a so-called reproduction resume is realized. When the playback resume is performed in S405, the process proceeds to S406.

  In S406, it is determined whether or not a specific operation has been performed. The user can selectively exit the reproduction resume and display the latest image by operating the operation unit 70 during the reproduction resume. As a specific operation at this time, a display asking whether to press a specific button of the operation unit 70 to which the latest image display function has been assigned in advance or to display the latest image on the display unit 28 is performed. 70 may be considered. If it is determined that the specific operation has been performed, the process proceeds to S415, and the latest image is displayed. If the latest image is displayed in S415, or if it is determined in S406 that there is no specific operation, the process proceeds to S407.

  In S407, other images are reproduced by a normal reproduction process starting from the image displayed in S415 or S405. For example, after the latest image is displayed in S415, the image is sequentially sent to the second newest image or the oldest image. When the resume image is displayed in S405 and no specific operation is performed in S406, the image is sequentially sent to an image one older than the resume image or one new image. Of course, playback may be performed by a playback method other than sequential image feed (playback by various searches, multiple-image feed, etc.).

  In step S408, it is determined whether editing has been performed with a change in the free space of the recording medium 200. Examples of editing that accompanies a change in the free space of the recording medium 200 include image deletion, trimming, resizing, and voice memo. If it is determined that editing accompanying a change in the free capacity of the recording medium 200 has been performed, the process proceeds to S418, and the free capacity of the storage medium 200 at this time is read into the RAM 30 instead of the free capacity of the storage medium 200 acquired in S401. If the process of S418 is completed or if it is determined in S408 that editing with a change in the free space of the recording medium 200 has not been performed, the process proceeds to S409.

  In S409, the setting position of the mode switching unit 60 is determined, and it is determined whether or not the mode has been switched. If it is determined that the mode has not been switched, the process proceeds to S419, where it is determined whether or not the recording medium 200 has been removed from the digital camera body. Whether or not the recording medium 200 is attached is detected by the recording medium attachment / detachment detection unit 98. If it is determined that the recording medium 200 has not been removed from the digital camera body, the process proceeds to S429, where it is determined whether the power switch 72 has been operated to turn off the power. If it is determined that the power is not turned off, the process proceeds to S407, and the reproduction process is continued. If it is determined in S429 that the power is off, if it is determined in S419 that the recording medium 200 has been removed from the digital camera body, or if it is determined in S409 that the mode has been switched, the process proceeds to S410. In S410, the free capacity of the recording medium 200 at this time is acquired from the RAM 30 as media information and recorded in the nonvolatile memory 56. Further, the image ID and time stamp of the image reproduced at this time are acquired from the RAM 30 as resume file information and recorded in the nonvolatile memory 56. The image ID and the time stamp are information included in the directory entry of the recording medium 200, and the information included in the directory entry is recorded in the RAM 30 every time an image is read into the RAM 30. For this reason, even when the recording medium 200 is extracted as in S419 during reproduction, the information of the image displayed immediately before the extraction remains in the RAM 30, and the resume file information is obtained from this information in the nonvolatile memory 56. Can be recorded. When the media information and the resume file information are recorded in S410, the playback mode processing routine is exited and the process proceeds to S306 in FIG.

  FIG. 5 shows an example of a single-resume resume image display in S405. Reference numeral 501 denotes a resume image, which is the last image displayed in the playback mode before S405. An icon 502 indicates that this display is a resume image. The icon 502 allows the user to recognize that this image is a resume image and not to be confused with the latest image. The icon 502 is not limited to the icon format, and may be any format as long as the user can recognize that the currently displayed image is a resume image. For example, character information, a frame, a background color, etc. can be considered.

  FIG. 6 is an example of resume image display in multi-screen display in S405. If it was a multi-screen display at the end of the previous playback, the multi-screen display can also be made during resume playback.

  FIG. 6A shows a screen that was last displayed in the playback mode before S405. In the multi-screen display for reproducing nine images as shown in the figure, the image 602 is selected by the cursor 601. When the playback mode ends in this state, the image 602 selected by the cursor 601 becomes the next resume image, and the image ID and time stamp of the image 602 are recorded in the nonvolatile memory 56 as resume file information. At this time, information indicating that the multi-screen display is completed is also recorded in the nonvolatile memory 56.

  FIG. 6B is an example of a resume image display after FIG. 6A. Simultaneously with the resume file information acquisition in S403, an inquiry is made as to whether or not information indicating that the playback has ended in the multi-screen display at the end of the previous playback is recorded in the nonvolatile memory 56. If the information indicating that the display has been completed on the multi-screen display at the end of the previous playback can be acquired, resume playback is also displayed on the multi-screen. At this time, an image 602 which is a resume image is displayed together with the cursor 601 in the center of the screen. Reference numeral 603 denotes an icon indicating that this display is resume playback. Similar to the icon 502 in FIG. 5, the icon 603 is a display for allowing the user to recognize that the display is a reproduction resume, and is not limited to the icon format. Note that the display of the resume image at the center of the screen at this time is an example for improving visibility, and the display position of the resume image on the multi-screen is not limited. For example, if it is a display that can recognize which is the resume image, such as when the cursor is displayed together, it may be displayed in the upper right part of the screen in accordance with the end of the previous playback, or may be displayed at other positions .

  In this embodiment, the media information and the resume file information are recorded in the nonvolatile memory in S410. However, the media information and the resume file information can be recorded in the recording medium 200 instead of the nonvolatile memory. When recording the media information on the recording medium 200 in S410, the recording is performed in consideration of the capacity of the media information itself. However, if the storage medium 200 is removed in S419, it cannot be recorded on the storage medium 200. In that case, an alternative process such as displaying on the display unit 28 that the media information and the resume file information could not be recorded on the recording medium because the recording medium 200 was removed, warning the user, and recording it in the nonvolatile memory 56, etc. Do not record anything. In this case, media information and resume file information are acquired from the recording medium 200 in S401 and S403. According to this method, media information and resume file information can be recorded for each recording medium. In other words, even when a plurality of recording media are alternately used by one camera, it is possible to determine whether or not the recording medium should be reproduced and to perform the reproduction resume for each recording medium.

  In this embodiment, in the playback mode, if the free space of the recording medium 200 has not changed since the end of the previous playback, playback is started from the image at the end of the previous playback, and if there is a change in the free space of the recording medium 200, the latest image is started. Reproduce. When there is a change in the free space of the recording medium 200, there is a possibility that a new image has been added by shooting or the like, and there is a strong demand for the user to see a new image that has not yet been viewed. If there is a change in the free space, there is a possibility that an image on a recording medium different from the recording medium that was being reproduced at the previous reproduction is being reproduced. On the contrary, if there is no change in the free space, it is highly likely that the same recording medium as the previous playback is being played back, and it can be said that there was no update such as addition of new images. There is a strong demand. In this way, it is possible to discriminate when it is preferable to resume playback by comparing the free capacity of the recording media, and to resume playback.

  Furthermore, after it is guaranteed to some extent that the same recording medium as the previous playback is played back by comparing the capacity using media information in advance, a resume image is specified using the image ID and time stamp as the resume file information. ing. Even though it is rare that images with the same image ID and time stamp exist, it is very unlikely that images having the same image ID and time stamp exist on the same recording medium. Therefore, according to the present embodiment, the resume image can be specified with high accuracy.

<Example 2>
In the second embodiment, media information and resume file information are only stored in the RAM 30 at the end of reproduction, and are recorded in the nonvolatile memory 56 at the end processing.

  A flowchart for explaining the overall operation of the digital camera 100 in the second embodiment is shown in FIG. However, the media information and the resume file information are read from the nonvolatile memory 56 and recorded in the RAM 30 during the file search process in S302. In addition, the media information and resume file information held in the RAM 30 are recorded in the nonvolatile memory 56 during the end processing in S307.

  FIG. 7 shows a flowchart of the reproduction mode of the second embodiment. FIG. 7 is the process in S304 of FIG. 3 as in the first embodiment, and the description of the same process as in FIG. 4 is omitted.

  The processes of S701 to S707, S714, and S717 are the same as those in FIG. However, in this embodiment, since the media information and the resume file information are held in the RAM 30 while the power is on, the media information acquisition corresponding to S401 in FIG. 4 and the resume file information acquisition processing corresponding to S403 are necessary. Absent. In S708, the setting position of the mode switching unit 60 is determined to determine whether or not the mode has been switched. If it is determined that the mode has not been switched, the process advances to step S718 to determine whether the recording medium 200 has been removed from the digital camera body. If it is determined that the recording medium 200 has not been removed from the digital camera body, the process advances to step S728 to determine whether or not the power switch 72 has been operated to turn off the power. If it is determined that the power is not turned off, the process proceeds to S706 and the reproduction process is continued. When it is determined that the power is turned off in S728, when it is determined that the recording medium 200 is removed from the digital camera body in S718, or when it is determined that the mode is switched in S708, the playback mode processing is terminated. Then, the process proceeds to S306 in FIG. At this time, the free space of the recording medium 200 acquired in S701 or S717 is held in the RAM 30. This is held in the RAM 30 while the power is on until the next playback mode is entered, and used as the next media information. Since the information included in the directory entry is recorded in the RAM 30 every time the image is read into the RAM 30, the image ID and time stamp of the image displayed each time the image is displayed in S704, S714, S706, and S707 are as follows. Recorded in the RAM 30. Among them, the image ID and time stamp of the image displayed last in the reproduction mode are held in the RAM 30 while the power is on until the next reproduction mode is entered, and used as the next resume file information.

  If it is determined in step S306 that the power is off, the process proceeds to step S307, and the free space of the storage medium 200 at the end of the previous reproduction held in the RAM 30 at this time is recorded in the nonvolatile memory 56 as media information. In addition, the image ID and time stamp of the last reproduced image are recorded in the nonvolatile memory 56 as resume file information.

  According to the present embodiment, the nonvolatile memory is not read every time the reproduction mode is entered, and the nonvolatile memory 56 is not rewritten every time the reproduction mode is finished. Therefore, the processing speed until the first image is displayed when entering the reproduction mode is increased.

<Example 3>
In the third embodiment, an example in which the reproduction method is changed according to a user instruction will be described.

  The user can arbitrarily select whether or not to perform reproduction by performing the reproduction resume of the present invention. User options include, for example, “normal playback”, “playback resume if not updated”, and “playback resume”. “Normal playback” is a known playback method that starts playback from the latest image. “Resume if not updated” is the playback resume shown in the first embodiment, and a change in the free capacity of the recording medium 200 from the end of the previous playback is determined. If there is no change, playback resume is performed. “Resume” always starts playback from the image at the end of the previous playback regardless of the change in the free space of the storage medium 200.

  A configuration in which the user can set any of these options in advance is provided in the digital camera, and playback can be performed in the same playback method regardless of how many times the playback mode is entered until the setting is changed. An example of the setting method is shown in FIG. A setting item such as “Resume Resume” is provided on the menu screen for changing each setting of the camera, and the user selects and sets from the above-described options by operating the operation unit 70. Of course, instead of the above-described options, options such as “resume playback ON” and “resume playback OFF” may be used. If “resume playback is ON”, playback resume as shown in the first embodiment is performed, and if “resume playback is OFF”, a known playback method is started to start playback from the latest image.

  Alternatively, unlike in the case of setting in advance, the user can be prompted to select a playback method from the above options every time the playback mode is entered, and playback can be performed by changing the playback method according to the user's intention for each case. An example of a playback method that prompts the user to select a playback method from the above-mentioned options every time the playback mode is entered will be described with reference to FIG.

  FIG. 8A is a flowchart of the playback mode that prompts the user to select a playback method from the above-mentioned options every time the playback mode is entered, and is the processing in S304 of FIG. When the set position of the mode switching unit 60 is determined and the playback mode is entered, first, a display for selecting a playback method as shown in FIG. 8B is displayed in S801, and an instruction from the user is awaited. The user selects a desired reproduction method from “normal reproduction”, “reproduction resume if not updated”, and “reproduction resume” by operating the operation unit 70 and moving the cursor 820.

  If there is an instruction from the user, the process advances to step S802 to determine which playback method the user has selected. If it is determined that “Resume Resume” has been selected, the process proceeds to S 805, where resume file information is acquired from the nonvolatile memory 56 and read into the RAM 30. In S806, it is determined whether or not the resume image indicated by the resume file information exists on the recording medium 200. If it is determined that there is no resume image, the process advances to step S817 to display the latest image on the display unit 28 as shown in FIG. Reference numeral 830 denotes the latest image, and reference numeral 831 denotes a display indicating that the resume image does not exist on the recording medium 200. In this case, the latest image is displayed although the user desires to display the resume image in S801. Therefore, the display of 831 allows the user to recognize that this latest image display is a result of “normal playback” because there is no resume image.

  If it is determined in S806 that the resume image exists on the recording medium 200, the process proceeds to S807, and the resume image is displayed on the display unit 28. In step S808, it is determined whether a specific operation has been performed. If it is determined that a specific operation has been performed, the process advances to step S817 to display the latest image. In this case, since the latest image is displayed regardless of the presence or absence of the resume image, 831 is not displayed. However, it may be displayed that the latest image is displayed by the user's specific operation. If it is determined in S808 that there is no specific operation, the process proceeds to S809.

  If it is determined in S802 that “resume resume if not updated” is selected, the process proceeds to S803, where the free space of the recording medium 200 at this time is acquired from the storage medium 200, and the media information at the end of the previous playback is acquired from the nonvolatile memory 56. The data is read out to the RAM 30. In step S804, the media information at the end of the previous playback is compared with the free space of the recording medium 200 at this time, and it is determined whether there is a change in the free space of the recording medium 200 since the end of the previous playback. If it is determined that there is a change, the process advances to S817 to display the latest image on the display unit 28. Also in this case, since the latest image is displayed regardless of the presence or absence of the resume image, 831 is not displayed. However, it may be displayed that the latest image is displayed because the free space of the storage medium 200 has changed. If it is determined in S804 that there is no change in the free capacity of the recording medium 200, the process proceeds to S805. After S805, the process described above is followed.

  If it is determined in step S802 that “normal playback” has been selected, the process advances to step S817 to display the latest image on the display unit 28. Also in this case, since the latest image is displayed regardless of the presence or absence of the resume image, 831 is not displayed. However, it may be displayed that the latest image display is made because “normal playback” is selected. When the latest image is displayed in S817, the process proceeds to S809.

  In step S809, other reproduction processing is performed until the reproduction mode ends. Since the processing is the same as S407 to S410 in FIG.

  According to the present embodiment, it is possible to reproduce by changing the reproduction method according to the user's selection, and it is possible to more accurately determine when it is preferable to resume the reproduction.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included.

  In the above-described embodiment, the free space of the storage medium 200 is used as media information. However, the present invention is not limited to the free space, and other information can be used as the media information of the present invention as long as the information is related to the capacity of the storage medium 200. Is possible. As information regarding the capacity of the storage medium 200, for example, the used capacity, the number of used clusters, the number of free clusters, and the like of the storage medium 200 can be considered. These pieces of information are highly likely to change when the recording medium 200 is updated, and it is possible to accurately determine whether or not the recording medium has been updated even when there is an update that does not change the number of files. In addition to information about the capacity, for example, information specific to a recording medium such as a recording medium identification ID is also used as media information. If the same storage medium is loaded, playback resumes regardless of the change in capacity. It can respond to requests such as.

  Although the image ID and the time stamp included in the directory entry are used as the resume file information, this is not limited to the image ID and the time stamp as long as the resume image can be specified. For example, at least one of the file size included in the directory entry, the MS-DOS file name, the update date and time, the start cluster of the file, and the like can be used. If directory entries are used, there is no need to actually open the file, and information that should be resume file information can be easily read. Of course, information other than the information included in the directory entry can be used, and the resume image can be specified more reliably by combining these pieces of information.

  In the above-described embodiment, an example in which playback resume is performed on an image recorded on the recording medium 200, which is an external recording medium. However, if an image is recorded on the internal recording medium, the image is recorded on the internal recording medium. The present invention can also be applied to a recorded image. For example, it is conceivable that an image is recorded in the nonvolatile memory 56 in the above-described embodiment. In this case, the free capacity of the nonvolatile memory 56 may be used as media information. Further, if the recording medium 200 and the free capacity of the non-volatile memory 56 are used as media information and information for identifying the recording medium on which the resume image is recorded is provided as resume file information, an integrated playback mode is provided. Can also be supported. For example, in a mode for reproducing only an image recorded on the recording medium 200, a mode for reproducing only an image recorded on the nonvolatile memory 56, and a mode for reproducing both images recorded on the recording medium 200 and the nonvolatile memory 56 , Each can be properly resumed.

  The playback resume of the present invention is not limited to the playback mode described above as long as it displays images recorded on various recording media in the image playback apparatus. For example, the present invention can be applied to a mode in which an image is designated while being reproduced, such as printing / transmission / deletion designation, or a slide show. If used in a mode for specifying an image to be edited, etc., the previous editing can be continued quickly, which is highly convenient. In these various playback modes, mode switching may be performed by means other than the mode switching unit 60. Of course, the present invention can be applied if it is possible to determine mode switching by means other than the mode switching unit 60.

  When executing a specific playback mode, it is possible to set not to resume playback at the next playback. In various playback modes, playback resume is performed and a resume image is displayed first, but a mode at the end of the mode is not desired to be the next resume image. Media information and resume file information are not recorded at the end of the playback mode that is not subject to the next resume. At the time of the next reproduction in such a mode, the reproduction is performed by a normal reproduction method displaying from the latest image. Alternatively, the playback can be resumed based on the media information and the resume file information recorded last in the playback mode other than the playback mode not to be resumed next time.

  The present invention is also applicable to a case where a software program that realizes the functions of the above-described embodiments is supplied directly from a recording medium 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.

External view of digital camera Block diagram of digital camera Flow chart of overall operation of digital camera 100 Flowchart of playback mode processing of Embodiment 1 Example of single image resume image display [A] Example of display at end of previous playback in multi-screen display, [b] Example of resume image display in multi-screen display Flowchart of playback mode processing of embodiment 2 [A] Flowchart of playback mode processing of Embodiment 3, [b] Display example of selecting a playback method in S801, [c] Display example of latest image in Embodiment 3 Display example for selecting an arbitrary playback resume method from the options

Explanation of symbols

30 RAM
DESCRIPTION OF SYMBOLS 50 System control circuit 52 Memory 56 Non-volatile memory 60 Mode switching part 70 Operation part 72 Power switch 98 Recording medium attachment / detachment detection part 200 Recording medium

Claims (23)

Setting means for setting whether or not to perform resume playback from the last played back image when playing back an image based on an operation from the user;
Recording control means for controlling to record media information that is information about the capacity of the recording medium when the reproduction of the image is completed and resume file information that is information indicating the image reproduced last in the reproduction;
Capacity change determination means for determining whether or not there is a change in the capacity of the recording medium based on the media information when reproducing an image;
When the image is reproduced, the setting means is set to perform the resume reproduction, and the capacity change determination means determines that there is no change in the capacity of the recording medium according to the resume file information. Control to play the displayed image,
When reproducing the image, the setting means is not set to perform the resume reproduction, and the setting means is set to perform the resume reproduction, and the capacity change determining means sets the recording medium. have a control means for controlling so if it is determined that there is a change in capacitance, to reproduce the latest image recorded on the recording medium,
When the playback screen of the last played image at the time of playback is a multi-display in which a plurality of images are displayed on one screen, the resume file information is used as information indicating the last selected image at the time of playback. Recording and reproduction of an image indicated by the resume file information when reproducing the image is also performed in a multi-display, and an image indicated by the resume file information among a plurality of multi-displayed images is displayed in a recognizable manner. A featured image reproduction apparatus. The image playback device further includes:
Image presence / absence determining means for determining whether or not an image indicated by the resume file information is present on the recording medium when the image is reproduced;
Even if the control means is set to perform the resume reproduction by the setting means and the capacity change determination means determines that there is no change in the capacity of the recording medium,
2. The image according to claim 1, wherein when the image presence / absence determining unit determines that there is no image indicated by the resume file information on the recording medium, the image is controlled to be reproduced. Playback device.   The image reproducing apparatus according to claim 1, wherein the media information is a used capacity or a free capacity of the recording medium when the reproduction is finished.   The image reproducing apparatus according to claim 1 or 2, wherein the media information is the number of used clusters or the number of free clusters of the recording medium when the reproduction is finished.   3. The image reproducing apparatus according to claim 1, wherein the media information further includes information specific to the recording medium.   The resume file information is at least one of an image ID, a time stamp, a file size, a file name, time information at the time of update, and file start cluster information of an image reproduced last during the reproduction. The image reproduction device according to claim 1.   6. The image reproduction apparatus according to claim 1, wherein the resume file information is information included in a directory entry related to an image reproduced last in the reproduction.   8. The image reproducing apparatus according to claim 1, wherein the media information and the resume file information are recorded on the non-volatile recording medium when the reproduction of the image is finished.   The media information and the resume file information are recorded on a volatile recording medium when the reproduction of the image is finished, and are recorded on a non-volatile recording medium when the power of the image reproduction apparatus is turned off. The image reproducing apparatus according to claim 1, wherein   When it is determined that there is no image indicated by the resume file information on the recording medium and the latest image is displayed, the fact that the image indicated by the resume file information is not found is displayed together with the latest image. The image reproducing device according to claim 2.   The image reproducing apparatus according to claim 1, wherein the setting means can be set every time an image is reproduced. The image playback device further includes:
12. The latest image recorded on the recording medium is selectively reproduced by a user's specific operation after reproducing an image indicated by the resume file information when reproducing the image. The image reproducing device according to any one of the above. When the image indicated by the resume file information is reproduced at the time of reproducing the image, the displayed image is displayed so as to be recognizable to the user that the displayed image is the image indicated by the resume file information. image reproducing apparatus according to any one of Items 1 to 1 2. Setting means for setting whether or not to perform resume playback from the last played back image when playing back an image based on an operation from the user;
A recording control step for controlling to record media information, which is information relating to the capacity of the recording medium when the reproduction of the image is terminated, and resume file information, which is information indicating the image reproduced last in the reproduction;
A capacity change determination step for determining whether there is a change in the capacity of the recording medium based on the media information when reproducing an image; and
When the image is reproduced, the setting means is set to perform the resume reproduction, and the capacity change determination step determines that there is no change in the capacity of the recording medium according to the resume file information. When the control is performed so that the displayed image is reproduced and the image is reproduced, the setting means is set to perform the resume reproduction, and the setting means is set to perform the resume reproduction. and have a control means when it is determined that there is a change in the capacity of the recording medium by the capacity change determining means, for controlling to reproduce the latest image recorded on the recording medium,
When the playback screen of the last played image at the time of playback is a multi-display in which a plurality of images are displayed on one screen, the resume file information is used as information indicating the last selected image at the time of playback. Recording and reproduction of an image indicated by the resume file information when reproducing the image is also performed in a multi-display, and an image indicated by the resume file information among a plurality of multi-displayed images is displayed in a recognizable manner. A control method for an image reproducing apparatus. Program causes the computer to function as each means of an image reproduction apparatus according to any one of claims 1 to 1 3. Computer, claims 1 to 1 3 of any one image reproducing apparatus readable storage medium a computer which stores a program to function as each means described. Display control means capable of displaying an image in any one of a single display for displaying one image on the display means and a multi-screen display for displaying a plurality of images on the display means;
When the image is displayed in the single image display when the image reproduction is finished, control is performed so that information indicating the image displayed at the time of the completion is recorded as resume file information. When the image is displayed in the multi-screen display when ending, the information indicating the image that was last selected at the time of ending is recorded as resume file information, and the multi-screen is displayed at the time of ending Recording control means for controlling to record information indicating that display has been performed, and
When playing back an image, if information indicating that display in multi-screen display has been performed at the time of completion is recorded, the image indicated by the resume file information is displayed in multi-screen display. And a control means for controlling the image reproduction apparatus. 2. The control unit according to claim 1, wherein when the image indicated by the resume file information is displayed in the multi-screen display, the image indicated by the resume file information is displayed in a selected state. 8. The image reproducing device according to 7 . Wherein, when displaying the image indicated by the resume file information in the multi-screen display, according to claim 1 7 or, characterized in that to place the image represented by said resume file information at a center of the display means 18. The image reproducing device according to 18 . In the case where the image indicated by the resume file information is displayed in the multi-screen display, the control means performs control so that the image indicated by the resume file information is displayed at the same position as the end. The image reproducing device according to claim 17 or 18 . A display control step capable of displaying an image in any one of a single display for displaying one image on the display means and a multi-screen display for displaying a plurality of images on the display means;
When the image is displayed in the single image display when the image reproduction is finished, control is performed so that information indicating the image displayed at the time of the completion is recorded as resume file information. When the image is displayed in the multi-screen display when ending, the information indicating the image that was last selected at the time of ending is recorded as resume file information, and the multi-screen is displayed at the time of ending A recording control step for controlling to record information indicating that the display is being performed;
When playing back an image, if information indicating that display in multi-screen display has been performed at the time of completion is recorded, the image indicated by the resume file information is displayed in multi-screen display. And a control step for controlling the image reproducing apparatus. Computer program to function as each means of an image reproduction apparatus according to any one of claims 1 7 to 2 0. Computer, according to claim 1 7 or 2 0 according to any one of the preceding image reproducing apparatus readable storage medium a computer which stores a program to function as each means described.

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