JP4211764B2 - Electronic camera, image recording apparatus, image recording method and program - Google Patents

Description

  The present invention relates to an electronic camera, an image recording apparatus, an image recording method, and a program that can be used for a digital camera, for example.

  In some models of electronic still cameras (digital cameras), which are a kind of electronic camera, in order to increase the speed of reading and displaying recorded image data in the playback mode, Separately, for example, a preview image data file of about 320 dots wide × 240 dots long is prepared in advance, in which the number of pixels of the main image is greatly reduced in accordance with the number of pixels of the liquid crystal display panel as a display unit. Some are recorded in association with the data file of the main image (see, for example, Patent Document 1).

  In addition, in the DCF (Design rule for Camera File system) standard adopted in many electronic still cameras, the number of pixels of the main image is further reduced from that of the preview image, and the number of pixels is 160 × 120 dots. It is obliged to record the thumbnail image data by incorporating it into the data file of the main image.

JP-A-7-143426

  However, in the method of managing the preview image as a data file different from the main image, the file management becomes complicated, and at the same time, it takes time for the reproduction process to search for the data file of the preview image. There is a problem that.

  In addition, the thumbnail image required by the DCF standard has a component pixel number of less than 20,000 pixels, and the number of pixels of a liquid crystal display panel of a general electronic still camera that is currently popular is approximately 100,000 pixels. Therefore, the resolution is too low for an image for reproduction.

  In addition, some electronic still camera standards do not create a preview image data file. In this case, the image is played back using the data file of the main image, so that the quick playback cannot be performed. There is.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to quickly view image data recorded in a memory and to make the contents of the image visible to some degree in detail. To provide a camera, an image recording apparatus, an image recording method, and a program.

According to the first aspect of the present invention, there is provided an imaging unit that captures a subject image and outputs image data, first image data based on the image data output from the imaging unit, and the first image data. Image data creation means for creating second image data with a small amount of information and third image data with a smaller amount of information than the second image data, and a first data created by the image data creation means Image data file creation means for creating an image data file including image data, second image data, and third image data, an image data file created by the image data file creation means, and the first image data Recording means for recording a plurality of image data files including an image data file including third image data; and a plurality of image data recorded in the recording means. Selection means for selecting any one of the files, determination means for determining whether or not the second image data is included in the image data file selected by the selection means, and the determination means When it is determined that the second image data is included, the second image data is displayed on the display unit, and when it is determined that the second image data is not included, the same image data file is displayed. And control means for notifying that the second image data is not included at the same time as displaying the first image data or the third image data contained therein on the display means. And

According to a second aspect of the present invention, in the first aspect of the present invention, when the control means determines that the second image data is not included, the control means includes the second image data included in the same image data file. The first image data or the third image data is displayed on the display means, and at the same time, the second image data is superimposed on the first image data or the third image data displayed on the display means. A character message or pictogram indicating that it is not included is displayed.

The invention according to claim 3 is the first image data, the second image data having a smaller information amount than the first image data, and the third image having a smaller information amount than the second image data. Recording means for recording an image data file including data, or an image data file including the first image data and the third image data, and a second in the image data file recorded in the recording means. A determination means for determining whether or not image data is included; and when the determination means determines that the second image data is included, the display means displays the second image data; If it is determined that the second image data is not included, the first image data or the third image data included in the same image data file is displayed on the display unit, and at the same time, the second image data is displayed . Painting Characterized by comprising a control means for notifying that data is not included.

According to a fourth aspect of the present invention, in the invention according to the third aspect, when the control means determines that the second image data is not included, the control means is included in the same image data file. The first image data or the third image data is displayed on the display means, and at the same time, the second image data is superimposed on the first image data or the third image data displayed on the display means. A character message or pictogram indicating that it is not included is displayed.

The invention according to claim 5 is the invention according to claim 3 or 4 , wherein the recording means records a plurality of image data files, and any one of the plurality of image data files recorded in the recording means. Selecting means for selecting one, and the determining means determines whether or not the second image data is included in the image data file selected by the selecting means.

According to a sixth aspect of the present invention, in the invention according to any one of the second to fifth aspects, the recording unit includes image data including first image data, second image data, and third image data. A file or an image data file including the first image data and the third image data, or an image data file including the first image data is recorded, and the determination means includes a second data file in the image data file. Is determined to include the third image data in the same image data file, and the control means determines whether the third image data is included in the same image data file. When it is determined that the image data is included, the third image data is displayed on the display unit, and when it is determined that the third image data is not included, the same image data file is displayed. Simultaneously displaying the first image data contained in Le on the display means, characterized by notifying the second image data and third image data is not included.

According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the control unit is configured to perform the first operation when the determination unit determines that the second image data is not included in the image data file. and executes the notification, and Turkey to perform different second notification from the first notification if the third image data is determined not to be included in the image data file by said determining means Features.

According to an eighth aspect of the present invention, in the invention according to any one of the third to seventh aspects, on the basis of an imaging unit that captures a subject image and outputs image data, and image data output from the imaging unit. Image data creation for creating first image data, second image data with less information than the first image data, and third image data with less information than the second image data And an image data file creation means for creating an image data file including the first image data, the second image data, and the third image data created by the image data creation means, wherein the recording means The image data file created by the image data file creating means is recorded.

According to a ninth aspect of the present invention, in the invention according to any one of the third to eighth aspects, the recording means is a removable memory that can be attached to and detached from the apparatus main body.

Invention of claim 1 0, wherein, based on the image data output from the imaging unit, and the first image data, second image data less information than the first image data, the second The third image data having a smaller amount of information than that of the image data is created, and the created image data file including the created first image data, second image data, and third image data is created. A plurality of image data files including an image data file and an image data file including the first image data and the third image data are recorded in a memory, and the plurality of image data files recorded in the memory If any one is selected, it is determined whether or not the second image data is included in the selected image data file, and if it is determined that the second image data is included, 2 images When the data is displayed on the display unit and it is determined that the second image data is not included, the first image data or the third image data included in the same image data file is displayed. And displaying the second image data at the same time as displaying the image on the screen.

The invention of claim 1 1, wherein the first image data, second image data less information than the first image data, than the image data of the second small amount of information the third An image data file including image data or an image data file including the first image data and third image data is recorded in a memory, and a second image is recorded in the image data file recorded in the memory. It is determined whether or not data is included. If it is determined that the second image data is included, the second image data is displayed on the display unit and the second image data is included. If it is determined that the first image data or the third image data included in the same image data file is displayed on the display unit, the second image data is not included. Notify And features.

The invention of claim 1 wherein is a program that the computer executes to be incorporated in the electronic camera, based on the image data output from the imaging unit, and the first image data, from the first image data An image data creating step for creating second image data having a small amount of information and third image data having a smaller amount of information than the second image data, and the first image data and the second image data A plurality of image data file creation steps for creating an image data file including data and third image data; and a plurality of image data files including the created image data file and the first image data and the third image data A recording step for recording the image data file in the memory, and a selection for selecting any one of the plurality of image data files recorded in the memory A step, a determination step for determining whether or not the second image data is included in the selected image data file, and if it is determined that the second image data is included, the second image data When the image data is displayed on the display unit and it is determined that the second image data is not included, the first image data or the third image data included in the same image data file is stored in the image data. The computer is caused to execute a control step of notifying that the second image data is not included simultaneously with the display on the display unit.

The invention of claim 1 3 wherein is a program that the computer executes incorporated in the image recording apparatus, the first image data, second image data less information than the first image data , An image data file including third image data having a smaller amount of information than the second image data, or an image data file including the first image data and the third image data is recorded in a memory. A step, a determination step of determining whether or not the second image data is included in the image data file recorded in the memory, and a determination that the second image data is included; When the second image data is displayed on the display unit and it is determined that the second image data is not included, the first image data or the first image data included in the same image data file is displayed. Has the third image data displayed on the display unit, and at the same time, causes the computer to execute a control step for notifying that the second image data is not included.

According to the present invention, the second image data can be used to make the content of the image quickly visible in some detail. In addition, even if there is no second image data, the first image By using the data or the third image data, it can be made quickly visible, and by notifying that there is no second image data, it is not a display using the second image data. The user can be made aware.

(First embodiment)
A first embodiment in which the present invention is applied to a digital still camera (hereinafter abbreviated as “digital camera”) will be described below with reference to the drawings.

  FIG. 1 shows the circuit configuration, and 10 is a digital camera. The digital camera 10 can be set by switching between a recording mode and a reproduction mode as a basic mode, and in a monitoring state in the recording mode, a lens including a focus lens 12 whose focus position is moved by driving the motor 11. The CCD 13, which is an image sensor disposed behind the optical axis of the photographic optical axis of the optical system, is scanned and driven by a timing generator (TG) 14 and a vertical driver 15, and outputs a photoelectric conversion output corresponding to an optical image formed at regular intervals. Output one screen.

The photoelectric conversion output is appropriately gain-adjusted for each primary color component of RGB in the state of an analog value signal, sampled and held by a sample hold circuit (S / H) 16, and digital data by an A / D converter 17. The color process circuit 18 performs color process processing including pixel interpolation processing and γ correction processing to generate a luminance signal Y and color difference signals Cb and Cr as digital values.
Memory Access) Controller 19

  The DMA controller 19 once uses the luminance signal Y and the color difference signals Cb and Cr output from the color process circuit 18 by using the composite synchronization signal, the memory write enable signal, and the clock signal from the color process circuit 18 once. And the DMA transfer to the DRAM 21 through the DRAM interface (I / F) 20.

  After completing the DMA transfer of the luminance and color difference signals to the DRAM 21, the CPU 22 reads the luminance and color difference signals from the DRAM 21 via the DRAM interface 20 and writes them into the VRAM 24 via the VRAM controller 23.

  The digital video encoder 25 periodically reads the luminance and color difference signals from the VRAM 24 via the VRAM controller 23, generates a video signal based on these data, and outputs the video signal to the display unit 26.

  The display unit 26 includes, for example, a color liquid crystal display panel with a backlight and a driving circuit thereof, and is disposed on the back side of the digital camera 10, and as an EVF (Electronic View Finder) in the recording mode. By functioning and performing display based on the video signal from the digital video encoder 25, an image based on the image information fetched from the VRAM controller 23 at that time is displayed.

  In this manner, when the image at that time is displayed in real time on the display unit 26 as a monitor image, when the shutter keys in the plurality of keys constituting the key input unit 27 are operated at the timing when still image shooting is desired. Generate a trigger signal.

  In response to this trigger signal, the CPU 22 stops the path from the CCD 13 to the DRAM 21 immediately after the completion of the DMA transfer of the luminance and color difference signals for one screen captured from the CCD 13 to the DRAM 21 at that time, and records and saves them. Transition to the state.

  In this record storage state, the CPU 22 transmits the luminance and chrominance signals for one frame written in the DRAM 21 through the DRAM interface 20 to a basic of 8 vertical pixels × 8 horizontal pixels for each of Y, Cb, and Cr components. A unit called a block is read and written to the JPEG circuit 28, and the JPEG circuit 28 compresses data by a process such as ADCT (Adaptive Discrete Cosine Transform), Huffman coding which is an entropy coding method, The obtained code data is read out from the JPEG circuit 28 as a data file of one image and written into a memory card 29 enclosing a flash memory which is a non-volatile memory that is detachably mounted as a recording medium of the digital camera 10.

  Then, along with the compression processing of the luminance and color difference signals for one frame and the completion of writing of all the compressed data to the memory card 29, the CPU 22 activates the path from the CCD 13 to the DRAM 21 again.

  At this time, the CPU 22 collectively associates the preview image obtained by thinning out the number of constituent pixels of the original image data and the thumbnail image obtained by thinning out the number of constituent pixels more greatly than the preview image in association with the original main image data. Are recorded in the memory card 29 as one image data file.

  FIG. 2A illustrates the format configuration of an image data file recorded on the memory card 29. A header D1 is arranged at the head position of the data, and then preview image data D2, thumbnail image data D3, and The main image data D4 is arranged and filed together, and, for example, an extension “.jpg” is added in accordance with the DCF standard, and is recorded on the memory card 29 as one data file.

  FIG. 2B shows the main image data (first image data) D4 and the preview image data (second image data) created therefrom when the CCD 13 has a total number of pixels of about 3 million pixels, for example. The image data) D2 and the thumbnail image data (third image data) D3 are shown in FIG.

  For example, it is assumed that the main image data D4 is 1920 horizontal dots × 1440 vertical dots, and this is a preview of 320 horizontal dots × 240 vertical dots (1/4 VGA) obtained by thinning out 1/6 vertical and horizontal pixels to 1/36 in total. Image data D2 is created.

  Then, the preview image data D2 is further thinned down to 1/2 in the vertical and horizontal directions and a total of 1/4 in the number of pixels to generate thumbnail image data D3 of 160 horizontal dots × 120 vertical dots. It is assumed that the data D1 to D3 are collected into a data file and recorded on the memory card 29 as one image data file.

  In addition to the shutter key described above, the key input unit 27 displays a recording / remode switching key for switching between a recording (REC) mode and a playback (PLAY) mode, which are basic modes, and a “menu” for displaying various menu items. ”Key, a cross key for instructing the up, down, left, and right directions for selecting images and various modes, specifying menu selection items, etc., and the content currently selected at the center of this cross key. A “set” key for setting an instruction, a power key for starting up the power of the digital camera 10, and the like, and signals accompanying these key operations are directly sent to the CPU 22.

  Next, the operation of the above embodiment will be described.

  Each process shown below is basically executed by the CPU 22 based on a program recorded in advance in a program memory (not shown in FIG. 1).

  FIG. 3 shows the processing contents in the recording mode, and initially waits for the shutter key of the key input unit 27 to be half-pressed (step A01).

  That is, the shutter key detects a pressing operation with a two-stage stroke. The shooting operation is locked in the first stage operation, so-called half-pressed state, and the actual operation is performed in the second stage operation, so-called full-pressed state. Shooting.

  Thus, when the shutter key is half-pressed, this is determined in step A01, and AF (automatic focus) processing is performed to obtain a focus position (step A02), and then appropriate by AE (automatic exposure) processing. An aperture value and a shutter speed at which a proper exposure can be obtained are obtained (step A03), and the photographing conditions are locked.

  Thereafter, it is confirmed whether or not the shutter key is half-pressed by repeatedly determining whether or not the shutter key is half-pressed (step A04) and whether or not the shutter key is fully pressed (step A05). While waiting for full press.

  Here, when the half-pressed state of the shutter key is released, this is determined in step A04, the photographing condition is unlocked, and the process returns to step A01 again.

  Then, when the shutter key is fully pressed, this is determined in step A05, and a transition is made to the image data recording and saving state. That is, first, after obtaining main image data by imaging (step A06), preview image data is created from the main image data as shown in FIG. 2 (step A07), and thumbnail image data is further generated from the preview image data. Is created (step A08), and the main image data, preview image data, and thumbnail image data are collected into a single data file and stored in the memory card 29 (step A09).

  The process related to a series of shooting is finished as described above, and the process returns to step A01 to prepare for the next shooting again.

In step A08, the thumbnail image data is created using the preview image data created by the processing in step A07. However, thumbnail image data may be created from the main image data.
In the above embodiment, one image data file including the main image data, the preview image data, and the thumbnail image data is created and recorded and stored in the memory card 29. For example, the main image data and the thumbnail image are stored. One image data file including data is created and recorded and stored in the memory card 29. At the same time, one image data file including preview image data is created, and the main image data and thumbnail image data are stored in the image data file. The image data file may be recorded and stored in the memory card 29 so as to be associated with the image data file.

  Further, a memory is created so as to create one image data file including the main image data, one image data file including the preview image data, and one image data file including the thumbnail image data, and to associate these three image data files. The data may be recorded and stored in the card 29.

  In addition, one image data file including the main image data and thumbnail image data is created and recorded and stored in the memory card 29. At the same time, one image data file including the preview image data is created. The image data file including the main image data and the thumbnail image data may be recorded and stored in the memory card 29 so as to be associated therewith.

  In addition, one image data file including preview image data and thumbnail image data is created and recorded and stored in the memory card 29. At the same time, one image data file including main image data is created, and the image data file is stored in the memory card 29. The image data file including the preview image data and the thumbnail image data may be recorded and stored in the memory card 29 so as to be associated with the image data file.

  Next, processing contents in the reproduction mode will be described with reference to FIG.

  At the beginning of switching from the recording mode to the playback mode, the number N of image data files recorded and stored in the memory card 29 at that time is input and selected as a variable n (step B01). Image data file, that is, the latest image data file at that time is searched (step B02).

  Here, it is determined whether there is preview image data D2 following the header D1 of the searched image data file (step B03).

  If the preview image data D2 is present in the image data file, the preview image data D2 is read out and developed by the JPEG circuit 28, and then displayed on the display unit 26 (step B04).

  If it is determined in step B03 that the preview image data D2 is not in the image data file, it is next determined whether or not thumbnail image data D3 is present in the image data file (step B05).

Here, if the thumbnail image data D3 is in the same image data file, the thumbnail image data D3 is read out and developed by the JPEG circuit 28, and then pixel interpolation is performed in accordance with the display capability of the display unit 26. The obtained image data is displayed on the display unit 26 (step B06). In addition, a character message or pictograph indicating that the preview image data is not included in the image data file selected for display is displayed superimposed on the display image (step B07).
If it is determined in step B05 that the thumbnail image data D3 is not in the image data file, the recorded image data is read out and developed by the JPEG circuit 28, and then displayed on the display unit 26. Pixel thinning is performed in accordance with the capacity, and the obtained image data is displayed and output on the display unit 26 (step B08). In addition, a text message or pictograph indicating that the preview image data and thumbnail image data are not included in the display-selected image data file is displayed superimposed on the display image (step B09).
In this way, an operation for selecting another image data file, specifically, the key input unit 27 is configured in a state where reproduction display is performed on the display unit 26 according to the presence or absence of the preview image data D2 and the thumbnail image data D3. When it is determined that some operation has been performed (YES in step B10), the value of the variable n is updated and set in accordance with the operation content. (Step B11) The processing from Step B02 is executed again to reproduce and display the updated image.

Note that the image data file that does not include the preview image data D2 and / or the thumbnail image data D3 is not recorded by photographing with the digital camera 10, but the memory card 29 is used by another digital camera. Or when an image data file obtained by shooting with another digital camera is input from an input terminal (not shown) provided in the digital camera 10 and recorded in the memory card 29. It exists.
As described above, the main image data, the preview image data, and the thumbnail image data are collected into a single data file and recorded in the memory card 29 for the image captured by the digital camera 10, and the preview image data is stored in the playback mode. An image data file that does not include preview image data, which is captured by another camera and recorded in the memory card 29 while allowing the display unit 26 to visually recognize the content of the image to some extent in detail when selecting the image data to include. Can be reproduced and displayed using thumbnail image data or main image data when it is determined that there is no preview image data.

  In the above embodiment, when the image data file created by another digital camera and recorded on the memory card 29 is reproduced, if it is determined that the preview image data is not included in the image data file, The thumbnail image data is included in the image data file, and if it is determined that the thumbnail image data is included, playback display using the thumbnail image data is performed, and the thumbnail image data is included. Although it has been described that the reproduction display using the main image data is performed when it is determined that the image data is not displayed, the preview image data is included in the image data file when the image data file recorded on the memory card 29 is reproduced. When it is determined that the image is not displayed, playback display using this image data is performed. It may be. In this case, as compared with the case where the reproduction display using the main image data is started after the presence / absence of the thumbnail image data is determined as in the above embodiment, the reproduction display can be performed in a shorter time. However, when thumbnail image data is included in the image data file, the time required for reproducing and displaying the image can be shortened in the above embodiment, although the resolution of the image is lowered.

  In the above embodiment, if it is assumed that the above-mentioned DCF standard is adopted for all digital cameras in the world and that the image data file always includes thumbnail image data, step B03 When it is determined that the preview image data is not included in the image data file, the process immediately proceeds to step B06, and reproduction display using the thumbnail image data is performed.

In the above embodiment, the case where the memory card 29 in which the image data file that does not include the preview image data and the thumbnail image data created by another digital camera is installed in the electronic still camera of the present invention has been described. However, by mounting the memory card 29 on another digital camera and recording an image data file by shooting, or by mounting the memory card 29 on a digital camera according to the present invention and recording an image data file by shooting, only the main image data can be recorded. An image data file including only main image data and thumbnail image data, an image data file including only main image data and preview image data, and main image data, preview image data, and thumbnail image data. Same as image data file If you are recorded in a mixed manner in the memory card 29 is also conceivable.
In addition, an image communication unit (including wireless communication and wired communication) is provided in the digital camera according to the present invention, and image data not including preview image data and / or thumbnail image data transmitted from another digital camera in the image communication unit. A case where a file is received and additionally recorded on the memory card 29 is also conceivable.
In the above-described embodiment, the case where the image data file is selected by a key operation by the user has been described. However, the image data file may be automatically selected by automatic page feed, condition search, or the like.
(Second Embodiment)
A second embodiment when the present invention is applied to a digital camera will be described below with reference to the drawings.

  The circuit configuration is basically the same as that shown in FIG. 1 and the configuration of the image data file recorded on the memory card as the recording medium is basically the same as that shown in FIG. The same parts are denoted by the same reference numerals, and illustration and description thereof are omitted.

  Further, it is assumed that the above-mentioned DCF standard is adopted for all digital cameras in the world, and that thumbnail image data is always included in the image data file.

  Next, the operation of the above embodiment will be described.

  Therefore, the processing contents in the recording mode are also the same as those shown in FIG. 3, and illustration and description thereof are omitted.

  FIG. 5 shows the processing contents in the playback mode. In the figure, at the beginning of switching to the reproduction mode, the number N of image data files recorded and stored in the memory card 29 at that time is input and selected as a variable n (step C01). The first image data file, that is, the newest image data file at that time is searched (step C02).

  Here, it is determined whether there is preview image data D2 following the header D1 of the searched image data file (step C03).

  If the preview image data D2 is in the same image data file, the preview image data D2 is read out and developed by the JPEG circuit 28, and then displayed on the display unit 26 (step C04).

  If it is determined in step C03 that the preview image data D2 is not in the image data file, the main image data is read and preview image data is created by thinning out the constituent pixels therefrom (step C05). The preview image data is used for display output on the display unit 26 (step C06).

  Subsequently, a text message or pictogram indicating that preview image data is not included in the image data file selected for display, and a text message prompting the user to determine whether to embed the preview image data in the image data file Alternatively, the pictograph is superimposed and displayed on the display image (step C07).

  Thereafter, when the user operates the set key to instruct embedding of preview image data in the image data file (YES in step C08), the preview image data created in step C05 is used to display the above-described FIG. 2A. In this way, a new image data file including the main image data, preview image data, and thumbnail image data is created, and updated and recorded in the memory card 29 in place of the original image data file (step C09).

  In this way, the preview image data D2 is created if necessary and reproduced and displayed on the display unit 26, and an operation for selecting other image data, specifically an operation of a cross key constituting the key input unit 27, etc. When it is determined that an operation has been performed (YES in step C10), the value of the variable n is updated and set in accordance with the operation content (step C11), and then again. The processing from step C02 is executed to reproduce and display the updated image.

  In this way, even when playing back images taken with other cameras, the image data file management is simplified, and if necessary, preview image data is created and the image data file is updated and recorded. Sometimes it becomes possible to quickly reproduce an image, and at the same time, the content of an image selected using preview image data can be visually recognized to some extent.

  In the above embodiment, when an image data file to be reproduced in the reproduction mode is selected, it is determined whether or not the selected image data file includes preview image data. An image data file including it was created.

  In this way, image data is updated and recorded whenever necessary, and the generated preview image data is reproduced and displayed, so that the frequency with which the preview image data is created and the image data file is updated and recorded is minimized. Therefore, it is possible to effectively use a battery with a limited capacity without wasting it. In particular, the preview image creation and the update recording process of the image data file associated therewith can be executed only when it is really necessary according to the user's intention.

  In the above-described embodiment, it is assumed that thumbnail image data is always included in the image data file, but the thumbnail image data may not be included in the image data file.

  In the above embodiment, a message for confirming whether or not to update the image data file is displayed on the display unit 26, and the update recording is executed only when the user instructs execution of the update recording. However, when the preview image data is not included in the image data file, the update recording of the image data file may be executed automatically (forcedly). When the update recording of the image data file is automatically executed in this way, the main image data is read out, the preview image data is thinned out from the main image data, and the image data file including the preview image data is generated. The image data file may be updated and recorded once, and the preview image data in the image data file may be read out and developed by the JPEG circuit 28 and then displayed on the display unit 26.

In the above embodiment, only the image data file including the main image data and the thumbnail image data and the image data file including the main image data, the preview image data, and the thumbnail image data are mixedly recorded on the same memory card 29. The image data file including only the main image data, the image data file including only the main image data and the thumbnail image data, the image data file including only the main image data and the preview image data, The present invention can also be applied to a case where image data files including main image data, preview image data, and thumbnail image data are recorded in the same memory card 29.
In the above-described embodiment, the case where the image data file is selected by a key operation by the user has been described. However, the image data file may be automatically selected by automatic page feed, condition search, or the like.
In the above-described embodiment, preview image data is created as necessary and the image data file is updated and recorded as needed when individual image data files are played back (displayed) as described above. All the image data files recorded on the memory card 29 are sequentially transferred when the digital camera 10 is turned on, when the mode is switched from the recording mode to the playback mode, when the execution instruction is operated by the user, at a predetermined time period, and at a predetermined time. If necessary, the above update recording may be performed collectively for all image data files recorded on the memory card 29 as necessary. In this case, after the update recording is collectively executed, the corresponding preview image is always included when displaying and selecting individual images, so that the preview image can be reproduced and displayed reliably and quickly. be able to.

FIG. 6 shows the processing contents when the above update recording processing is executed for all image data files recorded in the memory card 29 at the time of turning on the digital camera 10.
In FIG. 6, it is assumed that there is an image data file that does not include one or both of preview image data and thumbnail image data as an image data file.

  First, when the power of the digital camera is turned on by the user operating the power key, the initial value “1” is input and selected for the variable n (step D01), and the nth image data file from the memory card 29, that is, The first recorded image data file is searched (step D02).

  Next, it is determined whether or not the searched image data file includes preview image data and thumbnail image data (step D03).

  As a result of the determination in step D03, if it is determined that only the main image data is included in the searched image data file (YES in step D04), the preview image data and thumbnail image data are extracted from the main image data. After the creation, an image data file including main image data, preview image data, and thumbnail image data is created, and updated and recorded in the memory card 29 instead of the original image data file (step D05).

  On the other hand, if it is determined in step D03 that the searched image data file contains only the main image data and the preview image data (YES in step D06), the thumbnail image is determined from the main image data. After the data is created, an image data file including the main image data, preview image data, and thumbnail image data is created, and updated and recorded in the memory card 29 instead of the original image data file (step D07).

  If it is determined in step D03 that the searched image data file contains only the main image data and thumbnail image data (YES in step D08), a preview image is determined from the main image data. After the data is created, an image data file including the main image data, preview image data, and thumbnail image data is created and updated and recorded in the memory card 29 instead of the original image data file (step D09).

After the file update processing in step D05, D07, or D09, or as a result of the determination in step D03, it is determined that the main image data, preview image data, and thumbnail image data are all included in the searched image data file. If NO (NO in step D08), the process proceeds to step D10 to determine whether the value of n matches the number N of image data files recorded and stored in the memory card 29 at that time. It is determined whether or not the update process for all the image data files recorded and stored in the card 29 has been completed.
If it is determined that n = N, the updating process is terminated. If it is determined that n = N, the value of the variable n is set to “+1” (step D11), and the above step is performed again. The process from D02 is executed, and the processes of steps D02 to D11 are repeated until the update process for all the image data files recorded and stored in the memory card 29 is completed.

  Although the thumbnail image data is created from the main image data in steps D05 and D07, the thumbnail image data may be created from the preview image data.

  Moreover, although the said 1st and 2nd embodiment demonstrated the case where this invention was applied to a digital camera (electronic still camera), this invention is not limited to this, Other camera It can be easily applied to mobile phone terminals with cameras, PDAs with cameras (Personal Digital Assistants), personal computers with cameras, video cameras, etc. Essentially, any device equipped with a camera function can be applied. .

  In the first and second embodiments, the case where the present invention is applied to an apparatus equipped with a camera function has been described. However, the present invention is not limited to this, and other portable devices are also provided. It can easily be applied to telephone terminals, PDAs (Personal Digital Assistants), personal computers, etc. In short, any device equipped with a memory capable of recording image data files can be applied. .

  In addition, the present invention is not limited to the first and second embodiments, and can be variously modified and implemented without departing from the scope of the invention.

  Furthermore, the first and second embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, at least one of the problems described in the column of the problem to be solved by the invention can be solved, and described in the column of the effect of the invention. In a case where at least one of the obtained effects can be obtained, a configuration in which this configuration requirement is deleted can be extracted as an invention.

1 is a block diagram showing a circuit configuration of a digital camera according to a first embodiment of the present invention. The figure explaining the structure of the image data file recorded on the flash memory which concerns on the embodiment. 6 is a flowchart showing processing contents in a recording mode according to the embodiment. The flowchart which shows the processing content at the time of the reproduction | regeneration mode which concerns on the embodiment. The flowchart which shows the processing content at the time of the reproduction | regeneration mode which concerns on the 2nd Embodiment of this invention. The flowchart which shows the processing content at the time of the power-on which concerns on the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Digital camera, 11 ... Motor, 12 ... Focus lens, 13 ... CCD, 14 ... Timing generator (TG), 15 ... Vertical driver, 16 ... Sample hold circuit (S / H), 17 ... A / D converter , 18 ... color process circuit, 19 ... DMA controller, 20 ... DRAM interface (I / F), 21 ... DRAM, 22 ... CPU, 23 ... VRAM controller, 24 ... VRAM, 25 ... digital video encoder, 26 ... display unit, 27: Key input unit, 28: JPEG circuit, 29: Memory card, D1: Header, D2: Preview image data, D3: Thumbnail image data, D4: Main image data.

Claims (13)

Imaging means for capturing a subject image and outputting image data;
Based on the image data output from the imaging means, the first image data, the second image data having a smaller information amount than the first image data, and the information amount smaller than the second image data. Image data creating means for creating a small amount of third image data;
Image data file creation means for creating an image data file including the first image data, the second image data, and the third image data created by the image data creation means;
Recording means for recording a plurality of image data files including an image data file created by the image data file creation means and an image data file including the first image data and the third image data;
Selecting means for selecting any one of a plurality of image data files recorded in the recording means;
Determining means for determining whether or not the second image data is included in the image data file selected by the selecting means;
When it is determined by the determining means that the second image data is included, the second image data is displayed on the display means, and when it is determined that the second image data is not included, Control means for notifying that the second image data is not included at the same time as causing the display means to display the first image data or the third image data included in the same image data file. An electronic camera comprising the electronic camera.   When it is determined that the second image data is not included, the control unit causes the display unit to display the first image data or the third image data included in the same image data file. At the same time, a character message or pictogram indicating that the second image data is not included is displayed by superimposing the first image data or the third image data displayed on the display means. The electronic camera according to claim 1. An image data file including first image data, second image data having a smaller amount of information than the first image data, and third image data having a smaller amount of information than the second image data; Or a recording means for recording an image data file including the first image data and the third image data;
Determining means for determining whether or not the second image data is included in the image data file recorded in the recording means;
When it is determined by the determining means that the second image data is included, the second image data is displayed on the display means, and when it is determined that the second image data is not included, Control means for notifying that the second image data is not included at the same time as causing the display means to display the first image data or the third image data included in the same image data file. An image recording apparatus comprising the image recording apparatus.   When it is determined that the second image data is not included, the control unit causes the display unit to display the first image data or the third image data included in the same image data file. At the same time, a character message or pictogram indicating that the second image data is not included is displayed by superimposing the first image data or the third image data displayed on the display means. The image recording apparatus according to claim 3. The recording means records a plurality of image data files,
Selecting means for selecting any one of a plurality of image data files recorded in the recording means;
5. The image recording apparatus according to claim 3, wherein the determination unit determines whether or not the second image data is included in the image data file selected by the selection unit. The recording means includes an image data file including first image data, second image data, and third image data, or an image data file including the first image data and third image data, or Recording an image data file including the first image data;
When it is determined that the second image data is not included in the image data file, the determining means determines whether the third image data is further included in the same image data file,
When the determination means determines that the third image data is included, the control means causes the display means to display the third image data and does not include the third image data. If it is determined, the first image data included in the same image data file is displayed on the display means, and at the same time, the second image data and the third image data are not included. The image recording apparatus according to claim 3, wherein the image recording apparatus is an image recording apparatus.   The control means performs the first notification when the determination means determines that the second image data is not included in the image data file, and also performs the third notification in the image data file by the determination means. The image recording apparatus according to claim 6, wherein a second notification different from the first notification is executed when it is determined that the image data is not included. Imaging means for capturing a subject image and outputting image data;
Based on the image data output from the imaging means, the first image data, the second image data having a smaller information amount than the first image data, and the information amount smaller than the second image data. Image data creating means for creating a small amount of third image data;
Image data file creation means for creating an image data file including the first image data, the second image data, and the third image data created by the image data creation means,
8. The image recording apparatus according to claim 3, wherein the recording unit records the image data file created by the image data file creating unit.   The image recording apparatus according to claim 3, wherein the recording unit is a detachable memory that is detachable from the apparatus main body. Based on the image data output from the imaging unit, the first image data, the second image data having a smaller amount of information than the first image data, and the information amount smaller than the second image data. Create third image data,
Creating an image data file including the created first image data, second image data, and third image data;
A plurality of image data files including the created image data file and the image data file including the first image data and the third image data are recorded in a memory;
Select one of a plurality of image data files recorded in the memory,
Determining whether the second image data is included in the selected image data file;
When it is determined that the second image data is included, the second image data is displayed on the display unit, and when it is determined that the second image data is not included, the same image data is displayed. An image recording method characterized in that first image data or third image data included in a file is displayed on the display unit, and at the same time, notification that the second image data is not included is made. . An image data file including first image data, second image data having a smaller amount of information than the first image data, and third image data having a smaller amount of information than the second image data; Alternatively, an image data file including the first image data and the third image data is recorded in a memory,
Determining whether the second image data is included in the image data file recorded in the memory;
When it is determined that the second image data is included, the second image data is displayed on the display unit, and when it is determined that the second image data is not included, the same image data is displayed. An image recording method characterized in that first image data or third image data included in a file is displayed on the display unit, and at the same time, notification that the second image data is not included is made. . A program executed by a computer incorporated in an electronic camera,
Based on the image data output from the imaging unit, the first image data, the second image data having a smaller amount of information than the first image data, and the information amount smaller than the second image data. An image data creation step for creating third image data;
An image data file creation step for creating an image data file including the first image data, the second image data, and the third image data;
A recording step of recording a plurality of image data files including a created image data file and an image data file including the first image data and the third image data in a memory;
A selection step of selecting any one of a plurality of image data files recorded in the memory;
A determination step of determining whether or not the second image data is included in the selected image data file;
When it is determined that the second image data is included, the second image data is displayed on the display unit, and when it is determined that the second image data is not included, the same image data is displayed. Causing the display unit to display the first image data or the third image data included in the file, and at the same time, causing the computer to execute a control step of notifying that the second image data is not included. A program characterized by that. A program executed by a computer incorporated in the image recording apparatus,
An image data file including first image data, second image data having a smaller amount of information than the first image data, and third image data having a smaller amount of information than the second image data; Or a recording step of recording an image data file including the first image data and the third image data in a memory;
A determination step of determining whether or not the second image data is included in the image data file recorded in the memory;
When it is determined that the second image data is included, the second image data is displayed on the display unit, and when it is determined that the second image data is not included, the same image data is displayed. Causing the display unit to display the first image data or the third image data included in the file, and at the same time, causing the computer to execute a control step of notifying that the second image data is not included. A program characterized by that.

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