JP2005079822A - Image reproducing device and method for reproducing image - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display contents of a portable recording medium as a slide show without having a user be conscious of the reading time of image data from the portable recording medium. <P>SOLUTION: A medium detection part 320 detects the attachment or detachment of the portable recording medium 310. A medium management part 330 reads out a directory and a still image data file from the portable recording medium 310 and writes the read contents in a temporary storage area 381. An image management part 340 creates the album information of an album corresponding to the directory, adds the album information to an album list 392, creates photograph information of photographs corresponding to the still image data file, and adds the created information to a photo list 391. An image display control part 350 controls an image display part 360 so as to display photographs corresponding to the still image data file by properly reading out the album list 392 and the photo list 391. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an image reproduction device, and more particularly to an image reproduction device and image reproduction method for sequentially reproducing still image data recorded on a portable recording medium, and a program for causing a computer to execute the method.

  2. Description of the Related Art In recent years, imaging devices that can record captured content on a semiconductor recording medium by adopting digital technology have become widespread. For example, a digital still camera uses a portable recording medium in place of a conventional film and holds a compressed image by JPEG (Joint Photographic Experts Group) or the like.

  Also in digital television receivers, digital broadcast receivers that can receive digital broadcasts have been attracting attention in view of digitalization of terrestrial waves. Some digital broadcast receivers have a function of not only receiving digital broadcasts but also displaying image data held on the above-described portable recording medium. As digital still cameras and digital broadcast receivers are widely used in homes, it is required that such functions can be realized with simpler operations.

  In order to sequentially display the contents of the portable recording medium one by one as a slide show, conventionally, after the portable recording medium is inserted, reading of an image is selected from a menu, and image data is one by one from the portable recording medium. It has been necessary to read out or read out all the contents recorded on the portable recording medium when the portable recording medium is inserted.

For example, in a digital image playback apparatus, a technique has been proposed in which image data is read one by one from an external storage medium in accordance with a user's remote control operation, and image playback is performed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 11-275503 (FIG. 3)

  In the above-described prior art, when image data is read from the portable recording medium one by one in accordance with a user instruction, a data transfer time is required each time image data is read, and the time is shorter than the read waiting time. There is a problem that images cannot be switched at intervals. Further, when reading all the contents recorded on the portable recording medium when the portable recording medium is inserted, there is a problem that the initial data transfer time becomes very long and the user waits for a long time. is there.

  Therefore, an object of the present invention is to display the contents of a portable recording medium as a slide show without making the user aware of the time for reading image data from the portable recording medium.

  In order to solve the above problems, an image reproducing apparatus according to claim 1 of the present invention sequentially reads out still image data files from a portable recording medium and writes them in a temporary storage area, and also stores the still image data file in the temporary storage area. Medium management means for transmitting a file creation message indicating that it has been written, and upon receipt of the file creation message, adds photo information of the photo corresponding to the still image data file written in the temporary storage area to the photo list Image management means for transmitting a photo addition message indicating that the photo information has been added to the photo list; and image display control means for controlling to display a photo corresponding to the still image data file according to the photo list. And the image display control means includes the photo addition message. Receive and is intended to reread the photo list. As a result, the still image data file stored in the portable recording medium is expanded in the temporary storage area, the photo information is added to the photo list, and is subject to display control by the image display control means.

  The image reproduction apparatus according to claim 2 of the present invention is the image reproduction apparatus according to claim 1, wherein the medium management unit reads the directory including the still image data file from the portable recording medium. The directory is generated in the area and a directory creation message indicating that the directory has been created in the temporary storage area is transmitted. When the image management means receives the directory creation message, it is created in the temporary storage area. When album information of the album corresponding to the directory is added to the album list and an album addition message indicating that the album information has been added to the album list is transmitted, and the image display control means receives the album addition message Rereading the above album list Than it is. As a result, the album information is added to the album list using the directory including the still image data file as an album, and the display is controlled by the image display control means.

  According to a third aspect of the present invention, there is provided an image reproducing apparatus according to the second aspect, further comprising request input means for inputting a storage request for the designated album, wherein the image management means is configured as described above. When a save request is input, album information of the designated album is generated and added to the album list, and photo information of photos included in the designated album is added to the photo list, and the medium management means However, when the save request is input, the directory corresponding to the designated album and the still image data file included in the directory are read from the temporary storage area and written to the save area. This brings about the effect that the directory of the temporary storage area corresponding to the designated album is stored in the storage area.

  According to a fourth aspect of the present invention, there is provided the image reproducing apparatus according to the first aspect, further comprising medium detecting means for detecting that the portable recording medium is loaded, and the medium managing means. Starts reading from the portable recording medium when the loading of the portable recording medium is detected by the medium detecting means. This brings about the effect that the update of the photo list is driven by mounting the portable recording medium.

  The image reproduction apparatus according to claim 5 of the present invention is the image reproduction apparatus according to claim 4, wherein the medium detection means detects that a new portable recording medium is loaded. The contents of the mounted portable recording medium are compared with the contents of the temporary storage area, and still image data files that are not included in the mounted portable recording medium and are included in the temporary storage area It is deleted from the temporary storage area. This brings about the effect that the still image data file that is not included in the loaded portable recording medium is deleted from the temporary storage area.

  According to a sixth aspect of the present invention, there is provided the image reproduction device according to the first aspect, further comprising an image display means for displaying a photo corresponding to the still image data file according to the control by the image display control means. It has. This brings about the effect that the photo corresponding to the still image data file is displayed in parallel with the reading of the still image data file from the portable recording medium.

  According to a seventh aspect of the present invention, there is provided an image reproduction method for displaying the photo according to a photo list including photo information of the photo corresponding to the still image data file, wherein the still image is displayed on a portable recording medium. Procedure for detecting a directory including a data file, procedure for copying the still image data file to the temporary storage area in the directory, and corresponding to the still image data file when the still image data file is copied to the temporary storage area A procedure for adding photo information of a photo to be performed to a photo list, and a procedure for rereading the photo list when the photo information is added to the photo list. This brings about the effect that the still image data file is read from the portable recording medium in parallel with the photo display.

  An image reproduction method according to claim 8 of the present invention is an image reproduction method for displaying the photo in accordance with a photo list including photo information of the photo corresponding to the still image data file, wherein the still image is displayed on a portable recording medium. The procedure for detecting the directory including the data file, the procedure for determining whether the still image data file in the directory matches the still image data file in the temporary storage area, and if the result of the determination is that they do not match, A procedure for copying a still image data file to the temporary storage area, and a procedure for adding photo information of a photo corresponding to the still image data file to the photo list when the still image data file in the directory is copied to the temporary storage area And the photo information is added to the photo list. That when you and a procedure to re-read the photo list. As a result, when the still image data file on the portable recording medium has already been copied to the temporary storage area, it is possible to avoid copying again.

  According to a ninth aspect of the present invention, there is provided a program for detecting a directory including a still image data file in a portable recording medium in an image reproducing apparatus for displaying the still image data in accordance with a photo list including photo information relating to still image data. A procedure for copying the still image data file to the temporary storage area in the directory, and when the still image data file is copied to the temporary storage area, the photo information of the photo corresponding to the still image data file is The computer executes a procedure for adding to the list and a procedure for rereading the photo list when the photo information is added to the photo list. This brings about the effect that the still image data file is read from the portable recording medium in parallel with the display of the photo.

  According to a tenth aspect of the present invention, there is provided a program for detecting a directory including a still image data file in a portable recording medium in an image reproducing apparatus for displaying the still image data in accordance with a photo list including photo information relating to still image data. A procedure for determining whether the still image data file in the directory matches the still image data file in the temporary storage area, and if the result of the determination is that they do not match, the still image data file in the directory is A procedure for copying to a storage area; a procedure for adding photo information of a photo corresponding to the still image data file to a photo list when the still image data file in the directory is copied to a temporary storage area; and Once added to the list, It is intended to execute a procedure reread list computer. As a result, when the still image data file on the portable recording medium has already been copied to the temporary storage area, it is possible to avoid performing copying again.

  According to the present invention, it is possible to obtain an excellent effect of displaying the contents of a portable recording medium as a slide show without making the user aware of the time for reading image data from the portable recording medium.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a conceptual diagram showing the positioning of the portable recording medium 310 in the embodiment of the present invention. The portable recording medium 310 is attached to, for example, the card slot 290 of the digital still camera 200, and the captured still image data is recorded as one file in the file system of the portable recording medium 310. A JPEG compression format is often used as the file format.

  Further, the contents of the portable recording medium 310 can be subject to editing, deletion, etc. in the personal computer 400. That is, the portable recording medium 310 is mounted in the card slot 490 of the personal computer 400, and each file in the file system of the portable recording medium 310 is accessed by the personal computer 400. The personal computer 400 can also add a new file in the file system of the portable recording medium 310.

  The portable recording medium 310 on which still image data is recorded in this way is loaded into the card slot 190 of the digital broadcast receiver 100. Still image data recorded on the portable recording medium 310 is sequentially displayed as a slide show.

  FIG. 2 is a diagram showing a configuration of the digital broadcast receiver 100 according to the embodiment of the present invention. The digital broadcast receiver 100 includes a control unit 110, a memory unit 129, a disk unit 128, a bus 108, a tuner 131, an external input unit 132, a network input / output unit 133, a demodulation unit 134, A multiplexer 140, an audio decoding unit 141, an image decoding unit 142, a switch unit 150, a digital-analog (D / A) conversion unit 160, an audio output unit 161, an image output unit 162, a multiplexer 170, A voice encoding unit 171, an image encoding unit 172, a remote control light receiving unit 180, and a card slot unit 190 are provided. In addition, an antenna 109, a speaker 101, and a display 102 are connected as external devices.

  The control unit 110 controls the overall operation of the digital broadcast receiver 100. This control part 110 is comprised by CPU, for example. The memory unit 129 corresponds to the main memory of the control unit 110, and stores a program operating on the control unit 110, a photo list 391, an album list 392, and the like which will be described later. In addition, a disk unit 128 such as a hard disk is provided as an external storage of the control unit 110, and a temporary storage area 381 and a storage area 382, which will be described later, are stored.

  The tuner 131 detects a signal of a predetermined channel from the broadcast signal supplied from the antenna 109 under the control of the control unit 110 and supplies the detected signal to the demodulation unit 134. The broadcast signal may be a terrestrial wave, or a satellite signal by a broadcasting satellite (BS) broadcast or a communication satellite (CS) broadcast. The demodulator 134 demodulates the broadcast signal from the tuner 131 under the control of the controller 110, extracts the data, and supplies the data to the demultiplexer 140. In the case of digital broadcasting, for example, digital modulation is performed by phase modulation (PSK) or the like, and the demodulator 134 extracts data from the digitally modulated signal.

  The external input unit 132 connects an input from the outside of the digital broadcast receiver 100. The external input signal may be an analog signal or a digital signal. In the case of an analog signal, the external input unit 132 supplies audio data to the audio output unit 161 and image data to the image output unit 162 under the control of the control unit 110. These audio data and image data are simultaneously supplied to the switch unit 150. In the case of a digital signal, the external input unit 132 supplies the digital signal to the demodulation unit 134 under the control of the control unit 110.

  The network input / output unit 133 connects the digital broadcast receiver 100 and an external network, and performs communication processing using a protocol such as TCP / IP under the control of the control unit 110 to extract data. Supply to demultiplexer 140.

  The demultiplexer 140 separates the data from the demodulating unit 134 or the network input / output unit 133 into audio data and image data, and supplies them to the audio decoding unit 141 and the image decoding unit 142, respectively. The demultiplexer 140 functions as a digital data transport decoder, for example, and separates the MPEG (Moving Picture Experts Group) 2 transport stream into an audio stream as audio data and an image stream as image data. The demultiplexer 140 can also receive data from the memory unit 129 via the bus 108.

  The audio decoding unit 141 and the image decoding unit 142 decode the audio data and the image data supplied from the demultiplexer 140, respectively, and supply the decoded data to the switch unit 150. For example, an MPEG-encoded audio stream and image stream are MPEG-decoded into audio and image signals. The image decoding unit 142 can further convert the decoded image signal into, for example, an NTSC (National Television System Committee) system. In this case, the image decoding unit 142 is connected to the image output unit 162 via the switch unit 150 and is connected to the NTSC system. The signal is displayed on the display 102.

  The switch unit 150 converts the data supplied from the external input unit 132 or the audio decoding unit 141 and the image decoding unit 142 into a D / A conversion unit 160, an audio output unit 161, and an image output unit 162 under the control of the control unit 110, or And output to the audio encoding unit 171 and the image encoding unit 172. For example, when outputting to the speaker 101 and the display 102, the digital signal is directly output to the audio output unit 161 and the image output unit 162 via the D / A conversion unit 160, and is analog signal. On the other hand, when it is necessary to convert to MPEG, the data is output to the audio encoding unit 171 and the image encoding unit 172. In this case, the data encoded by the audio encoding unit 171 and the image encoding unit 172 are multiplexed by the multiplexer 170 to form, for example, an MPEG2 transport stream.

  The card slot unit 190 is loaded with a portable recording medium 310, and reads and writes data from and to the portable recording medium 310 under the control of the control unit 110. For example, still image data read from the portable recording medium 310 is decoded by the image decoding unit 142 and displayed on the display 102 by the image output unit 162. The card slot 190 is provided, for example, on the front side of the digital broadcast receiver 100, and is provided for the convenience of attaching and detaching the portable recording medium 310.

  The remote control light receiving unit 180 receives an infrared signal or the like from the remote control 181 and transmits the instruction content from the user to the control unit 110. The control unit 110 controls the entire digital broadcast receiver 100 so as to operate in accordance with the instruction content.

  FIG. 3 is a diagram showing the external appearance of the remote controller 181 according to the embodiment of the present invention. The remote controller 181 includes a power button 182 for instructing power on / off of the digital broadcast receiver 100, a GUI selection button 183 for selecting a GUI (Graphical User Interface) display on the screen, and a display scene for moving. A flash button 184, a channel key 185 for selecting a television channel, a volume button 186 for adjusting the volume, and a channel button 187 for instructing up and down movement of the television channel.

  The flash button 184 is used when the program that is being broadcast is viewed and played back to a scene that has been missed or anxious, or when the recorded program is played, and the scene is moved to a desired scene. Is used to scroll the displayed still images one after another.

  The channel button 187 is used for switching a television channel during viewing of a television broadcast, but is used for switching an album to be displayed in a slide show. An album in a slide show is a collection of still image data, and each album includes one or more still image data. Accordingly, the still image data belongs to any album.

  FIG. 4 is a diagram showing a functional configuration of the image reproduction apparatus according to the embodiment of the present invention. This functional configuration includes a medium detection unit 320, a medium management unit 330, an image management unit 340, an image display control unit 350, an image display unit 360, a request input unit 370, a disk 380, and a memory 390. I have. Among these, the medium detection unit 320, the medium management unit 330, the image management unit 340, and the image display control unit 350 can be realized as programs that operate on the control unit 110 of the digital broadcast receiver 100. Further, the image display unit 360 can be realized as the display 102. The request input unit 370 can be realized as the remote control light receiving unit 180. Further, the disk 380 can be realized as the disk unit 128. Further, the memory 390 can be realized as the memory unit 129.

  The medium detection unit 320 detects that the portable recording medium 310 is attached to or detached from the card slot unit 190 and transmits a detection message to the medium management unit 330.

  When the medium management unit 330 receives a detection message from the medium detection unit 320 indicating that the portable recording medium 310 is newly installed in the card slot unit 190, the medium management unit 330 detects a directory including still image data in the portable recording medium 310. Then, the same directory as that directory is created in the temporary storage area 381. Then, the medium management unit 330 transmits a directory creation message indicating that a directory has been created to the image management unit 340.

  In addition, the medium management unit 330 reads a file of image data (still image data) from the portable recording medium 310 and writes it in the temporary storage area 381 in the disk 380. However, as described later, when the same file as the file in the portable recording medium 310 already exists in the temporary storage area 381, the file is not written into the temporary storage area 381. Then, the medium management unit 330 transmits a file copy message indicating that the file has been copied from the portable recording medium 310 to the temporary storage area 381 to the image management unit 340.

  Upon receiving the directory creation message from the medium management unit 330, the image management unit 340 creates album information of the album corresponding to the directory and adds it to the album list 392 in the memory 390. Then, the image management unit 340 transmits an album addition message indicating that album information has been added to the image display control unit 350. Here, the album corresponds to a directory in the file system of the disk 380.

  Further, upon receiving a file copy message from the medium detection unit 320, the image management unit 340 creates photo information of a photo corresponding to the file and adds it to the photo list 391 in the memory 390. Then, the image management unit 340 transmits a photo addition message indicating that photo information has been added to the image display control unit 350. Here, “photo” corresponds to a still image data file in the file system of the disk 380.

  The image display control unit 350 controls the image display unit 360 to display a photo corresponding to the still image data file by appropriately reading the album list 392 and the photo list 391 in the memory 390. When receiving the album addition message from the image management unit 340, the image display control unit 350 rereads the album list 392 from the memory 390, and receives the photo addition message, rereads the photo list 391 from the memory 390. The image display unit 360 displays a photo corresponding to the still image data file in accordance with the control of the image display control unit 350.

  The image display control unit 350 controls to sequentially display the photos defined in the photo information in the photo list 391 at predetermined time intervals (for example, at intervals of 3 seconds) during the slide show. Which album is to be used can be set in a mode, and can be selected, for example, in order from the newest date, the oldest date, or the alphabetical order of album names. Also, the photos in the album can be selected by the alphabetical order of the file names.

  Further, the user can give an instruction to display control performed by the image display control unit 350 by operating the remote controller 181. By operating the flash button 184 of the remote controller 181 in FIG. 3, the photos in the album can be displayed sequentially. Further, the album to be used can be switched by operating the channel button 187 of the remote controller 181. Furthermore, each photo can be displayed as a list in a thumbnail format, and the user can select and display a desired photo from the thumbnails using the GUI selection button 183 of the remote controller 181. When the photo list 391 is read again during the thumbnail display as described above, the thumbnail display is also updated accordingly.

  The temporary storage area 381 of the disk 380 functions as a cache of the portable recording medium 310 and is synchronized with the contents of the portable recording medium 310. When the portable recording medium 310 is attached or detached, the files in the temporary storage area 381 are treated as deleted in the management of the album list 392 and the photo list 391. However, the file in the temporary storage area 381 is maintained until a new portable recording medium 310 is loaded next, and when the portable recording medium 310 is newly loaded, the portable recording medium is stored in the temporary storage area 381. When the same file as 310 remains, control is performed so that data transfer from the portable recording medium 310 to the temporary storage area 381 is omitted.

  The disk 380 has a storage area 382 in addition to the temporary storage area 381. The storage area 382 is an area for storing still image data regardless of whether the portable recording medium 310 is attached or detached. The contents of the temporary storage area 381 are removed from the management of the photo list 391 and the album list 392 every time the portable recording medium 310 is detached, but the contents of the storage area 382 are affected by the mounting state of the portable recording medium 310. Absent. In order to record in the storage area 382, a request clearly indicating the storage from the temporary storage area 381 is required. This storage request is made by designating an album from the request input unit 370 to the image display control unit 350. Upon receiving this save request, the image display control unit 350 transmits a save request message to the image management unit 340. Upon receiving this save request message, the image management unit 340 adds album information of the album specified in the save request message to the album list 392, and adds photo information of photos belonging to the album to the photo list 391. Then, the medium management unit 330 reads the directory corresponding to the designated album and the files belonging to the directory from the temporary storage area 381 and writes them in the storage area.

  FIG. 5 is a diagram showing the structure of a file system in the portable recording medium 310 according to the embodiment of the present invention. Still image data written to the portable recording medium 310 by the digital still camera 200 is recorded in a directory structure as shown in FIG. In a standard DCF (Design rule for Camera File system), a DCF image root directory having a directory name of DCIM is provided immediately below a root directory (ROOT).

  A DCF directory for storing still image data files is provided under the DCF image root directory. The directory name of the DCF directory is 8 characters, the first character to the third character are directory numbers from 100 to 999, and the subsequent five characters are called free characters using only single-byte uppercase letters. Directory numbers must be assigned so that they do not overlap with each other, but missing numbers are allowed.

  Each DCF directory stores a still image data file. The file name is 8 characters excluding the extension, the first character to the fourth character are free characters using only uppercase letters, and the subsequent four characters are file numbers from 0001 to 9999. . File numbers must be assigned so that they do not overlap each other, but missing numbers are allowed. In the case of the JPEG compression format used as still image data, the extension is “.JPG”.

  Thus, in the file system, each still image data file belongs to one of the directories. Reflecting the structure of this file system, each photo belongs to one of the albums.

  FIG. 6 is a diagram showing the structure of the album list 392 and the photo list 391 in the memory 390 according to the embodiment of the present invention. FIG. 6A shows the structure of the album list 392. Album information relating to each directory includes album identification number 711, attribute 712, album name 713, path 714, file size 715, number of photos 716, and the like. It has.

  The album identification number 711 is an identification number assigned to each album. The attribute 712 indicates whether the corresponding directory is stored in the temporary storage area 381 or the storage area 382 in the disk 380. In the figure, “C” indicates that the directory is stored in the temporary storage area 381. What is held in the storage area 382 is represented by “S”. When the portable recording medium 310 is attached or detached, the image management unit 340 deletes album information whose attribute 712 is “C”. As a result, control is performed to prohibit access to the temporary storage area 381 when the portable recording medium 310 is not attached.

  The album name 713 is the name of the album, and in principle, a directory name is used, but the user can change it. A path 714 indicates the storage position of the album in the file system. The file size 715 indicates the capacity of the entire album including the subordinate files. The number of photos 716 indicates the number of still image data files included in the album.

  FIG. 6B shows the structure of the photo list 391. As photo information relating to each still image data file, a photo identification number 721, an album identification number 722, a file name 723, a date 724, a file size 725, and the like. , And resolution 726.

  The photo identification number 721 is an identification number assigned to each photo. The album identification number 722 is the album identification number of the album to which the photo belongs. A file name 723 is a file name of the still image data file. The date 724 indicates the date and time when the file was created. The file size 725 indicates the file capacity. The resolution 726 indicates the resolution of still image data.

  Next, the operation of the image reproduction apparatus according to the embodiment of the present invention will be described with reference to the drawings.

  FIG. 7 is a diagram illustrating a main operation of the medium management unit 330 according to the embodiment of the present invention. When the medium management unit 330 receives a detection message indicating that the portable recording medium 310 is loaded from the medium detection unit 320, the medium management unit 330 first checks whether the file system of the portable recording medium 310 satisfies a predetermined standard (step). S9311). If the standard is not satisfied, error processing is performed and the following processing is not performed.

  The medium management unit 330 reads the directory structure stored in the temporary storage area 381 and creates a temporary storage area directory list (step S9312). This temporary storage area directory list is work data for synchronizing the contents of the temporary storage area 381 with the contents of the portable recording medium 310.

  When the temporary storage area directory list is created, a process for synchronizing the contents of the temporary storage area 381 and the contents of the portable recording medium 310 is started (step S9313). This synchronization process is called recursively as described with reference to FIG. 8, and is first called so that the process is performed from the root directory, for example.

  When the synchronization process is completed recursively, all the directories left in the temporary storage area directory list at the end are deleted (step S9314). This is because the directory remaining in the temporary storage area directory list is a directory that is not included in the portable recording medium 310.

  FIG. 8 is a diagram showing an operation of synchronization processing of the medium management unit 330 according to the embodiment of the present invention. This synchronization processing is called from step S9313 in FIG. 7, and then recursively called in step S9339 in the drawing so that the synchronization processing for each directory included in the portable recording medium 310 is sequentially performed. It has become. It is desirable to limit the number of steps in the depth direction that are recursively called in advance. For example, in the DCF file system described with reference to FIG. 5, since the file is stored in the third level directory, it is sufficient to limit the number of levels in the depth direction to three.

  In this synchronization processing, first, the directory structure and its configuration file stored in the portable recording medium 310 are read, and a media directory list and a media file list are created (steps S9321 and S9322). These medium directory list and medium file list are work data for representing the contents of the portable recording medium 310.

  Then, the number of still image data files belonging to the current directory is counted based on the medium file list (step S9323). If there is no still image data file belonging to the current directory (step S9324), the presence of the next directory is checked based on the media directory list (step S9338). If the next directory exists, the next directory is synchronized. The process is recursively called (step S9339). On the other hand, if the next directory does not exist (step S9338), the process is recursively returned to the step that called the synchronization process.

  If it is determined in step S9324 that there is a still image data file, it is determined whether a directory corresponding to the current directory also exists in the temporary storage area 381 (step S9325). If it is determined that the directory does not exist in the temporary storage area 381, the same directory as the current directory is created in the temporary storage area 381 (step S9326).

  Then, a directory creation message indicating that a directory corresponding to the current directory has been created in the temporary storage area 381 is transmitted (step S9327). In addition, the directory configuration file stored in the temporary storage area 381 is read out, and a temporary storage area file list is created (step S9328). Further, the directory corresponding to the current directory is deleted from the temporary storage area directory list created in step S9312 of FIG. 7 (step S9329).

  Next, it is checked whether or not an unprocessed still image data file remains in the current directory (step S9331). If a still image data file remains, the next still image data file is set as the current file, and the following step S9332 is performed. To S9336 are performed. First, a filtering process is performed on the still image data file (step S9332). In this filter processing, for example, when the file name includes characters that cannot be printed due to garbled characters, processing such as alignment with printable characters is performed. Then, the current file is deleted from the temporary storage area file list created in step S9328 (step S9333).

  If the same file as the current file does not exist in the temporary storage area 381 (step S9334), the current file is copied to the temporary storage area 381 (step S9335). Then, a file copy message indicating that the current file has been copied to the temporary storage area 381 is transmitted (step S9336). Thereafter, the process returns to the determination in step S9331 again.

  If it is determined in step S9331 that no unprocessed still image data file remains in the current directory, a still image data file corresponding to the file remaining in the temporary storage area file list created in step S9328 is temporarily stored. All are deleted from the storage area 381 (step S9337). Then, the process proceeds to the determination in step S9338 described above.

  FIG. 9 is a diagram illustrating an operation when the image management unit 340 receives a directory generation message according to the embodiment of the present invention. Upon receiving the directory generation message from the medium management unit 330, the image management unit 340 generates album information relating to the directory generated in the temporary storage area 381 (step S9411). Then, the image management unit 340 adds the album information to the album list 392 (step S9412). Furthermore, the image management unit 340 transmits an album addition message indicating that album information has been added to the album list 392 to the image display control unit 350 (step S9413).

  FIG. 10 is a diagram showing an operation when the image management unit 340 receives a file copy message according to the embodiment of the present invention. Upon receiving the file copy message from the medium management unit 330, the image management unit 340 optimizes the still image data file copied to the temporary storage area 381 (step S9421). In this file optimization, Raw data (raw data: bitmap data) is generated from the original compressed format file so that an image suitable for display on the display 102 is obtained. For example, in the case of a VGA (Video Graphics Array) size display 102, Raw data having a resolution of 640 dots wide and 480 dots high is generated separately from the compression format file (JPEG).

  Next, the image management unit 340 generates photo information relating to the file copied to the temporary storage area 381 (step S9422). Then, the image management unit 340 adds the photo information to the photo list 391 (step S9423). At this time, the image management unit 340 compares the path of the file included in the file copy message with the path 714 in the album list 392, and if there is a matching album in the album list 392, the album identification number 711 of that album. Is assigned to the album identification number 722 of the photo list 391.

  Furthermore, the image management unit 340 transmits a photo addition message indicating that photo information has been added to the photo list 391 to the image display control unit 350 (step S9424).

  When the image management unit 340 receives a save request message from the image display control unit 350, the operations of both FIG. 9 and FIG. 10 are performed. That is, album information of the album specified in the save request message is added to the album list 392, and photo information of photos belonging to the album is added to the photo list 391. In this case, the medium management unit 330 reads the directory corresponding to the designated album and the files belonging to the directory from the temporary storage area 381 and writes them in the storage area.

  As described above, according to the embodiment of the present invention, the medium management unit 330 that manages the still image data file, the image management unit 340 that manages the photo, and the image display control unit 350 that controls the display of the photo are provided. By operating in parallel, it is possible to display a photo by a slide show without making the user aware of the read time of the still image data file from the portable recording medium.

  The embodiment of the present invention is an example for embodying the present invention and has a corresponding relationship with the invention-specific matters in the claims as shown below, but is not limited thereto. However, various modifications can be made without departing from the scope of the present invention.

  In other words, in claim 1, the portable recording medium corresponds to the portable recording medium 310, for example. The medium management unit corresponds to the medium management unit 330, for example. An image management unit corresponds to the image management unit 340, for example. An image display control unit corresponds to the image display control unit 350, for example. The temporary storage area corresponds to the temporary storage area 381, for example. The photo list corresponds to the photo list 391, for example.

  In claim 2, the album list corresponds to, for example, the album list 392.

  In claim 3, the request input unit corresponds to, for example, the request input unit 370.

  Further, in claim 4, the medium detection means corresponds to, for example, the medium detection unit 320.

  The image display means corresponds to the image display unit 360, for example.

  Further, in claim 7 or claim 9, a procedure for detecting a directory including a still image data file in a portable recording medium corresponds to, for example, step S9324. Further, the procedure for copying the still image data file to the temporary storage area in the directory corresponds to step S9335, for example. When the still image data file is copied to the temporary storage area, the procedure for adding the photo information of the photo corresponding to the still image data file to the photo list corresponds to, for example, step S9423. Further, when photo information is added to the photo list, a procedure for rereading the photo list corresponds to a function in the image display control unit 350, for example.

  Further, in claim 8 or claim 10, a procedure for detecting a directory including a still image data file in a portable recording medium corresponds to, for example, step S9324. The procedure for determining whether the still image data file in the directory matches the still image data file in the temporary storage area corresponds to, for example, step S9334. If the result of the determination is that they do not match, the procedure for copying the still image data file in the directory to the temporary storage area corresponds to step S9335, for example. Further, when the still image data file in the directory is copied to the temporary storage area, the procedure for adding the photo information of the photo corresponding to the still image data file to the photo list corresponds to, for example, step S9423. Further, when photo information is added to the photo list, a procedure for rereading the photo list corresponds to a function in the image display control unit 350, for example.

  The processing procedure described in the embodiment of the present invention may be regarded as a method having a series of these procedures, and a program for causing a computer to execute these series of procedures or a recording medium storing the program May be taken as

  As an application example of the present invention, the present invention can be applied when, for example, the content of a still image data file captured by a digital still camera is displayed as a slide show by a digital receiver.

It is a conceptual diagram which shows the positioning of the portable recording medium 310 in embodiment of this invention. It is a figure which shows the structure of the digital broadcast receiver 100 in embodiment of this invention. It is a figure which shows the external appearance of the remote control 181 in embodiment of this invention. It is a figure which shows the function structure of the image reproduction apparatus in embodiment of this invention. It is a figure which shows the structure of the file system in the portable recording medium 310 in embodiment of this invention. It is a figure which shows the structure of the album list 392 and the photo list | wrist 391 in the memory 390 in embodiment of this invention. It is a figure which shows the main operation | movement of the medium management part 330 in embodiment of this invention. It is a figure which shows the operation | movement of the synchronous process of the medium management part 330 in embodiment of this invention. It is a figure which shows the operation | movement at the time of directory generation message reception of the image management part 340 in embodiment of this invention. It is a figure which shows the operation | movement at the time of the file copy message reception of the image management part 340 in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Digital broadcast receiver 101 Speaker 102 Display 108 Bus 109 Antenna 110 Control part 128 Disk part 129 Memory part 131 Tuner 132 External input part 133 Network input / output part 134 Demodulation part 140 Demultiplexer 141 Voice decoding part 142 Image decoding part 150 Switch part 160 Conversion unit 161 Audio output unit 162 Image output unit 170 Multiplexer 171 Audio encoding unit 172 Image encoding unit 180 Remote control light receiving unit 181 Remote control 182 Power button 183 Selection button 184 Flash button 185 Channel key 186 Volume button 187 Channel button 190 Card slot Unit 310 portable recording medium 320 medium detection unit 330 medium management unit 340 image management unit 350 image display control unit 3 0 image display unit 370 requesting an input unit 380 disc 381 the temporary storage area 382 storage area 390 memory 391 Photo list 392 album list

Claims (10)

Medium management means for sequentially reading still image data files from a portable recording medium and writing them to a temporary storage area, and transmitting a file creation message indicating that the still image data file has been written to the temporary storage area;
When the file creation message is received, photo information of a photo corresponding to the still image data file written in the temporary storage area is added to the photo list and a photo addition message indicating that the photo information has been added to the photo list Image management means for transmitting,
Image display control means for controlling to display a photo corresponding to the still image data file according to the photo list,
The image display apparatus according to claim 1, wherein the image display control means rereads the photo list when the photo addition message is received. When the medium management unit reads a directory including a still image data file from the portable recording medium, the medium management unit generates the directory in the temporary storage area and indicates that the directory has been created in the temporary storage area. Send
Upon receiving the directory creation message, the image management means adds album information of an album corresponding to the directory created in the temporary storage area to the album list and indicates that the album information has been added to the album list. Send an album addition message,
2. The image reproducing apparatus according to claim 1, wherein the image display control means rereads the album list when receiving the album addition message. A request input means for inputting a request to save the designated album;
When the storage request is input, the image management unit generates album information of the designated album, adds the album information to the album list, and adds photo information of photos included in the designated album to the photo list. Add
When the storage request is input, the medium management unit reads a directory corresponding to the designated album and a still image data file included in the directory from the temporary storage area and writes the same into the storage area. The image reproducing apparatus according to claim 2. A medium detecting unit for detecting that the portable recording medium is mounted;
2. The image reproducing apparatus according to claim 1, wherein the medium managing unit starts reading from the portable recording medium when the medium detecting unit detects attachment of the portable recording medium. When the medium detecting means detects that a new portable recording medium is loaded, the medium management means compares the contents of the loaded portable recording medium with the contents of the temporary storage area and loads the medium. 5. The image reproduction apparatus according to claim 4, wherein a still image data file that is not included in the portable recording medium and is included in the temporary storage area is deleted from the temporary storage area. 2. The image reproducing apparatus according to claim 1, further comprising image display means for displaying a photo corresponding to the still image data file in accordance with control by the image display control means. An image reproduction method for displaying the photo according to a photo list including photo information of the photo corresponding to the still image data file,
A procedure for detecting a directory including a still image data file in a portable recording medium;
Copying the still image data file to a temporary storage area in the directory;
A procedure for adding photo information of a photo corresponding to the still image data file to a photo list when the still image data file is copied to a temporary storage area;
An image reproducing method comprising: a step of rereading the photo list when the photo information is added to the photo list. An image reproduction method for displaying the photo according to a photo list including photo information of the photo corresponding to the still image data file,
A procedure for detecting a directory including a still image data file in a portable recording medium;
A procedure for determining whether the still image data file in the directory matches the still image data file in the temporary storage area;
If the result of the determination is that they do not match, a procedure for copying the still image data file in the directory to the temporary storage area;
A procedure for adding photo information of a photo corresponding to the still image data file to the photo list when the still image data file in the directory is copied to the temporary storage area;
An image reproducing method comprising: a step of rereading the photo list when the photo information is added to the photo list. In an image reproduction apparatus for displaying the still image data according to a photo list including photo information relating to still image data,
A procedure for detecting a directory including a still image data file in a portable recording medium;
Copying the still image data file to a temporary storage area in the directory;
A procedure for adding photo information of a photo corresponding to the still image data file to a photo list when the still image data file is copied to a temporary storage area;
A program for causing a computer to execute a procedure of rereading the photo list when the photo information is added to the photo list. In an image reproduction apparatus for displaying the still image data according to a photo list including photo information relating to still image data,
A procedure for detecting a directory including a still image data file in a portable recording medium;
A procedure for determining whether the still image data file in the directory matches the still image data file in the temporary storage area;
If the result of the determination is that they do not match, a procedure for copying the still image data file in the directory to the temporary storage area;
A procedure for adding photo information of a photo corresponding to the still image data file to the photo list when the still image data file in the directory is copied to the temporary storage area;
A program for causing a computer to execute a procedure of rereading the photo list when the photo information is added to the photo list.

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