JP2006107591A - Data reproducing method and data reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a data reproducing method and a data reproducing apparatus capable of matching a reproduction end point of time of a plurality of image files with an end point of time of audio data when a user reproduces a plurality of the image files by sequentially switching the image files by each prescribed interval time while listening to, e.g. BGM music. <P>SOLUTION: Prior to reproduction of image data of a plurality of the image files and audio data of one or more audio files associated with a group of a plurality of the image files in parallel with each other, a total reproduction time of the audio data of one or more audio files is calculated, the calculated total reproduction time of the audio data is divided by the number of a plurality of image files to obtain a prescribed reproduction time per one image file. The image data of a plurality of the image files are consecutively reproduced while switching the image files by each obtained prescribed reproduction time and the audio data of one ore more audio files are consecutively reproduced in parallel with the reproduction of the image data. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a data reproduction method and a data reproduction apparatus suitable for application to, for example, a case where image data of a still image taken with a digital camera is reproduced together with so-called BGM (Back Ground Music) audio data.

  A subject image is picked up by an image pickup device using, for example, a CCD (Charge Coupled Device), a video signal based on the image pickup signal is digitized, and image data is compressed by, for example, a JPEG (Joint Photographic Experts Group) method, and a memory card Digital recording type digital cameras (electronic still cameras) that record images as image files on recording media such as these have become widespread.

  Recently, there is a digital camera having a function capable of capturing and recording not only still image data but also moving image data as an image file.

  Also, an electronic album is created by converting a printed photograph into digital still image data with a scanner, compressing the digital still image data by, for example, the JPEG method, and recording the image on a recording medium such as a DVD. You can also.

  For example, a data playback device such as a DVD player has a function called a slide show that plays back a plurality of still image files recorded on a DVD sequentially and sequentially. Furthermore, in the case of a slide show, there is provided what can reproduce one or a plurality of songs as so-called BGM along with reproduction of a plurality of still image files.

  In general, a slide show is that a still image file is reproduced and displayed during a predetermined interval time, and the next still image file is reproduced and displayed after the interval time has elapsed. The operation is repeated.

  In this case, the BGM music is irrelevant to the still image that is the target of the slide show, and the length of the playback time of the BGM music varies depending on the song, and is an interval that is a playback unit period of the still image. It is independent of time. For this reason, the BGM music ends when the slide show for a group of a plurality of still image files is not completed, and conversely, the BGM music ends when the slide show ends. There are many things that do not happen.

  In this case, even if one playback is finished, the end method is such that only the other playback is performed to the end, or if one playback is finished, the other playback is forcibly terminated. In any case, it is not possible to make the end point of the slide show of the image coincide with the end point of the reproduction of the audio data (end point of the song).

  On the other hand, for example, in Patent Document 1 (Japanese Patent Laid-Open No. 10-145730), each image file of a still image is associated with an explanation sound for explaining the still image, a corresponding environment sound, and the like. A data reproduction method is provided in which each still image is displayed until reproduction of the corresponding audio data is completed.

  According to the data reproduction method of Patent Document 1, since the interval time for reproducing each still image file is matched with the reproduction time for the explanation sound and the environment sound, the slide show of a plurality of image files is completed. Sometimes, the reproduction of the audio data is also ended.

The above-mentioned patent documents are as follows.
JP-A-10-145730

  However, in the above-described invention of Patent Document 1, it is necessary to associate explanatory sound and environmental sound for each still image file, and the reproduction time of each still image file is: It becomes a thing corresponding to the reproduction time length of the voice data of the explanation voice and the environmental voice, and it becomes various.

  For this reason, the invention of the above-mentioned Patent Document 1 is used for performing a slide show on a plurality of still images by sequentially switching and reproducing image files at predetermined intervals while listening to BGM music. It is unsuitable.

  In view of the above points, the present invention ends the reproduction of a plurality of image files when, for example, a plurality of image files are reproduced by sequentially switching image files at predetermined intervals while listening to BGM music. It is an object of the present invention to provide a data reproducing method and a data reproducing apparatus capable of matching the time point with the end point of audio data.

In order to solve the above problems, a data reproduction method according to the present invention provides:
A data reproduction method for reproducing image data of a plurality of image files and audio data of one or more audio files associated with the group of the plurality of image files in parallel. And
An audio playback time calculating step of calculating a total playback time of audio data of the one or more audio files prior to the playback;
Prior to the reproduction, an image reproduction time calculating step for obtaining a predetermined reproduction time per image file by dividing the calculated total reproduction time of the audio data by the number of files of the plurality of image files;
The image data of the plurality of image files are continuously reproduced while switching the image file at predetermined reproduction times per image file calculated in the image reproduction time calculating step, and the image data is reproduced. In parallel, a playback execution step of continuously playing back the audio data of the one or more audio files;
It is characterized by providing.

  In the present invention, prior to reproduction of a plurality of image files, in the audio reproduction time calculation step, the total reproduction time of audio data of one or more audio files associated with the group of the plurality of image files. Is calculated, and the number of image files to be reproduced is recognized.

  Then, in the image playback time calculation step, a predetermined playback time per image file is obtained by dividing the calculated total playback time of the audio data by the number of files of the plurality of image files.

  In the reproduction execution step, a plurality of image files are continuously reproduced while switching the image file at every predetermined reproduction time per image file calculated by the image reproduction time calculation means, and the image data In parallel with the reproduction, the audio data of one or a plurality of audio files is continuously reproduced.

  In this case, since the total playback time of the plurality of image files is equal to the total playback time of one or a plurality of audio data, the end time of the playback of the plurality of image files and the corresponding one or more It coincides with the end point of the reproduction of the audio data.

  According to the present invention, for example, when a plurality of image files are reproduced by sequentially switching the image files at predetermined intervals while listening to BGM music, the reproduction end point of the plurality of image files and the audio The end point of data can be matched.

  Embodiments of a data reproduction method and a data reproduction apparatus according to the present invention will be described below with reference to the drawings.

[Hardware configuration example of data playback device]
FIG. 1 shows a hardware configuration when an embodiment of a data reproducing apparatus according to the present invention is applied to an optical disk reproducing apparatus.

  The optical disk playback apparatus of this example includes a disk drive unit 10, a disk data processing unit 20, an image playback output unit 30, an audio playback output unit 40, a control unit 50, and a user interface unit 60.

  The disk drive unit 10 includes a spindle motor 12 that rotationally drives an optical disk 11 such as a DVD or a CD (Compact Disc), an optical pickup 13 that extracts recording data from the optical disk 11, and a servo that servo-controls the spindle motor 12 and the optical pickup 13. A processor 14 and an RF (Radio Frequency) amplifier 15 are provided.

  The RF amplifier 15 receives the data extracted from the optical disk 11 by the optical pickup 13 and generates reproduction data to be sent to the disk data processing unit 20, and also generates a focus error signal and a tracking error signal of the pickup 13 for reproduction. The data is supplied to the servo processor 14 together with a part of the data.

  The servo processor 14 controls the biaxial device (not shown) of the optical pickup 13 based on the focus error signal and tracking error signal from the RF amplifier 15 to perform focus control and tracking control. Further, the servo processor 14 detects the absolute address of the scanning position of the optical pickup 13 on the optical disk 11 from the signal from the RF amplifier 15 and is based on the control via the disk data processing unit 20 from the control unit 50. Then, a thread mechanism (not shown) for controlling the position of the optical pickup 13 in the radial direction of the optical disk 11 is controlled to control the scanning position of the optical pickup 13. Further, the servo processor 14 also performs rotation control of the spindle motor 12.

  The disk data processing unit 20 includes a DVD / CD data processor 21, a track buffer 22, and a stream demultiplexer 23. The DVD / CD data processor 21 receives the reproduction data from the RF amplifier 15 and performs demodulation processing, error correction decoding processing, or the like corresponding to 8/14 modulation or 8/16 modulation, and the reproduction data as a result thereof. The signal is supplied to the stream demultiplexer 23 through the track buffer 22.

  The DVD / CD data processor 21 also plays a role of passing a control signal from the control unit 50 to the servo processor 14.

  The stream demultiplexer 23 separates compressed image data and compressed audio data from the stream data received from the track buffer 22, supplies the compressed image data to the image reproduction output unit 30, and the compressed audio data This is supplied to the reproduction output unit 40.

  The image reproduction output unit 30 includes an image data buffer 31, an image data decoding unit 32, a video / graphic processing module 33, a digital interface unit 34, an NTSC encoder 35, and a D / A converter 36.

  The image data buffer 31 receives the compressed image data from the stream demultiplexer 23 and supplies it to the image data decoding unit 32. The image data decoding unit 32 decompresses and decodes the compressed image data, and supplies the decoded output to the video / graphic processing module 33.

  The video / graphic processing module 33 performs video processing such as screen size change, image quality adjustment, caption display / OSD (on-screen display) display, and the like. Image data obtained by processing by the video / graphic processing module 33 is led to a digital video output terminal 37 through a digital interface 34.

  The image data obtained by processing by the video / graphic processing module 33 is also supplied to an NTSC (National Television System Committee) encoder 35 to be converted into a digital NTSC color video signal. The digital NTSC color video signal from the NTSC encoder 35 is converted into an analog NTSC color video signal by the D / A converter 36 and supplied to a monitor display (not shown) through the output terminal 38 for image display. .

  The audio reproduction output unit 40 includes an audio data buffer 41, an audio data decoding unit 42, a digital interface 43, and a D / A converter 44.

  The audio data buffer 41 receives the compressed audio data from the stream demultiplexer 23 and supplies it to the audio data decoding unit 42. The audio data decoding unit 42 decompresses and decodes the compressed image data. The decoded digital audio signal is led to the digital audio output terminal 45 through the digital interface 43.

  The digital audio signal from the audio data decoding unit 42 is also led to the analog audio output terminal 46 through the D / A converter 44. The analog audio signal output from the analog audio output terminal 46 is supplied to the audio input terminal of the monitor display, for example, and is reproduced as sound by the speaker.

  The control unit 50 is configured by a microcomputer, and includes a CPU (Central Processing Unit) 51, a ROM (Read Only Memory) 52, and a RAM (Random Access Memory) 53 connected via a system bus 54. The ROM 52 stores a processing program for performing functions such as a movie data playback function from a DVD and a music data playback function from a CD in the data playback device. A processing program for executing the slide show is stored.

  The CPU 51 executes processing according to the processing program stored in the ROM 52 using the RAM 53 as a work area.

  The user interface 60 includes a user operation input unit, a display unit such as an LCD (Liquid Crystal Display), and the like, and is connected to the system bus 54. In this example, the operation input unit includes a remote control transceiver. The CPU 51 of the control unit 50 receives user input operation information input through the user interface 60 via the system bus 54, determines what instruction input is, and executes processing according to the determined instruction input. Like that.

  In this embodiment, various function menus and the like of the data reproducing apparatus are displayed on the screen of the monitor display by using the OSD function of the video / graphic processing module 33 according to the operation by the user through the operation input unit. A program for this purpose is stored in the ROM 52.

[Reproduction process in data reproduction apparatus]
In the data reproducing apparatus of FIG. 1, it is possible to reproduce movie content recorded on a DVD as an example of the optical disc 11 and music content recorded on a CD.

  When playing back DVD movie content, the DVD is loaded as the optical disk 11. When a playback start operation is performed by the user through the user interface 60, playback processing for the DVD is started.

  That is, the data modulated from the DVD by the optical pickup 13 is taken out, supplied to the DVD / CD data processor 21 through the RF amplifier 15, and demodulated, and error correction processing is performed. At this time, it is recognized from the data from the DVD that the optical disk 11 is a DVD, and the DVD / CD data processor 21 performs signal demodulation processing and error correction processing on the data from the DVD.

  The data demodulated by the DVD / CD data processor 21 is supplied to the stream demultiplexer 23 through the track buffer 22 and separated into compressed image data and compressed audio data.

  The compressed image data from the stream demultiplexer 23 is supplied to the image data decoding unit 32 through the image data buffer 31 and decompressed and decoded. The decompressed and decoded image data is supplied to the NTSC encoder 35 through the video / graphic processing module 33 and converted into a digital NTSC color video signal, which is converted into an analog NTSC color video signal by the D / A converter 36. For example, it is supplied to a monitor display and a reproduced image is displayed on the screen. Further, the digital video signal from the video / graphic processing module 33 is led to the output terminal 37 through the digital interface 34.

  The compressed audio data from the stream demultiplexer 23 is supplied to the audio data decoding unit 42 through the audio data buffer 41 and decompressed and decoded. The decompressed and decoded audio data is converted into an analog audio signal by, for example, the D / A converter 44, supplied to, for example, a monitor display through the output terminal 46, and reproduced by sound from the speaker. Further, the digital audio signal from the audio data decoding unit 42 is led to the output terminal 45 through the digital interface 43.

  When reproducing the music content of a CD, the CD is loaded as the optical disk 11. When a playback start operation is performed by the user through the user interface 60, playback processing for the CD is started.

  That is, the data modulated from the CD by the optical pickup 13 is taken out, supplied to the DVD / CD data processor 21 through the RF amplifier 15, and demodulated. At this time, it is recognized from the data from the CD that the optical disk 11 is a CD, and the DVD / CD data processor 21 performs signal demodulation processing and error correction processing on the data from the CD.

  The data demodulated by the DVD / CD data processor 21 is supplied to the stream demultiplexer 23 through the track buffer 22. At this time, only the compressed audio data is obtained from the stream demultiplexer, and the compressed audio data is supplied to the audio data decoding unit 42 through the audio data buffer 41 and decompressed and decoded. The decompressed and decoded audio data is led to the output terminal 45 through the digital interface 43, converted into an analog voice signal by the D / A converter 44, and led to the output terminal 46. Then, it is supplied to the speaker through an electronic device such as an amplifier connected to the output terminal 45 or the output terminal 46, and sound is reproduced.

[Description of still image slide show]
<Recording media subject to slideshow>
In this embodiment, for example, compressed image data of a still image taken by a digital camera is managed as one image file for each still image, for example. Then, for example, by taking pictures on the same day, a single folder can be formed and managed by a plurality of collected image files.

  In this embodiment, it is possible to register one or a plurality of audio files in which data files are compressed audio data obtained by compressing music pieces by a predetermined compression method. In this embodiment, the audio file registered in this folder is reproduced together with BGM when a slide show is executed for a plurality of image files in the folder. That is, in this embodiment, by registering in one folder, a plurality of image files and one or a plurality of audio files are associated with each other, and are reproduced simultaneously during a slide show. It is supposed to be.

  FIG. 2 shows an example of this folder. That is, in the example of FIG. 2, the folder includes an audio file group and an image file group, and the audio file group includes an audio file A1 to an audio file AN (N is an integer of 1 or more). The image file group is composed of M image files from the image file V1 to the image file VM (M is an integer of 1 or more).

  Each of the audio files A1 to AN includes a file header and compressed audio data. Each of the image files V1 to VM includes a file header and compressed image data. The file header includes information on the compression method and bit rate.

  This folder can be generated by, for example, a personal computer or the like and written on, for example, a DVD or CD that can be written. That is, for example, the user captures, in advance, a plurality of still image files taken with a digital camera in a personal computer and a plurality of compressed audio data audio files such as music pieces to be used in a slide show. , Try to capture in advance.

  Then, the user selects and inputs a group of a plurality of image files constituting a group and one or a plurality of audio files corresponding to the group to the personal computer. The personal computer generates one folder composed of an image file group and an audio file group in accordance with the selection input. If no audio file group is selected, a folder consisting only of image file groups is generated.

  Then, the personal computer writes the folder on, for example, a writable DVD or CD based on the user's operation instruction input. In this case, the user can generate a plurality of folders and write the plurality of folders on one DVD or CD.

  When writing this folder to a DVD or CD, the management information of the folder written to the DVD or CD is written in the lead-in area, which is the DVD or CD management area. As the folder management information, information such as the folder structure, the number of files, and the file size is recorded for each folder as shown in FIG.

  The information of the folder structure includes recording position information on the DVD or CD of each folder and file name information of one to a plurality of files included in the folder. The file name information has a different extension depending on the type of file such as an image file or an audio file. Based on the type of extension of the file name information in the information of the folder structure, the data reproducing apparatus determines whether the folder consists of an image file group and an audio file group or only an image file group, Reads information such as whether it is attached.

  The number of files is information indicating the number of files in each of the image file group and the audio file group. The file size is information indicating the data size of each of the image file group and the audio file group.

  In the above description, each of the image file and the audio file is taken into the personal computer, and a folder is created by selecting the image file and the audio file to be collected by the user, and a DVD, a CD, or the like is created. I wrote to the optical disc. However, if the digital camera has a function for generating an image folder made up of a plurality of image files, the personal computer captures the image folder and selects one of the plurality of images already captured in the personal computer. One or a plurality of audio files can be additionally registered in the folder.

  Also, when the digital camera uses, for example, a DVD or CD as a recording medium, and has a function for forming a folder consisting of an image file group and an audio file group, similar to the personal computer described above, With a digital camera, one or more of the above folders can be recorded on a DVD or CD.

<Processing operations in slideshow>
The user loads the DVD or CD created as described above into the data reproducing apparatus of FIG. 1 as the optical disk 11 and uses the LCD menu screen of the user interface 60 or the monitor display screen by using the OSD function. Select a slide show from the new screen or the like displayed on the screen, and further select a folder where the slide show is to be performed, and start the slide show. In this case, it is possible to select not only one folder but also a plurality of folders for which a slide show is to be performed.

  FIG. 3 is a flowchart for explaining the processing operation of the slide show. The processing of each step in this flowchart is executed by the CPU 51 of the control unit 50 using the RAM 53 as a work area according to the slide show program written in the ROM 52.

  First, the CPU 51 of the control unit 50 of the data reproduction apparatus accepts selection of a slide show and selection of a target folder in accordance with a menu selection through the user interface 60 (step S101).

  Then, the CPU 51 waits for a slide show start instruction operation (step S102), and when it is determined that the slide show start instruction operation has been performed, the folder structure and image of the first folder to be reproduced are determined from the folder management information in the lead-in area of the optical disc 11. Information on the number of files and audio files, and the file size of each image file and each audio file are acquired (step S103).

  Then, the CPU 51 determines whether or not the audio file group is included in the folder from the information of the folder structure (step S104), and when determining that the audio file group is not included, the CPU 51 determines the slide show interval time in advance. The slide show is executed for a given time. That is, for a plurality of image files in a folder, the still image data of the first image file is reproduced in order, displayed for the interval time, and when the interval time has elapsed, the still image data of the next image file is reproduced. Then, again, only the interval time is displayed, and when the interval time has elapsed, the still image of the next image file is further reproduced and displayed for the interval time (step S111).

  Then, the CPU 51 determines whether or not the slide show has been completed for all the image files in the folder (step S112). If it is determined that the slide show has not ended, the CPU 51 returns to step S111 to perform the slide show of the images in the folder. When it is determined that the process has been completed, it is determined whether or not there is another folder that has been selected as a slideshow execution target and has not been executed yet (step S109). When it is determined that there is another folder, the process returns to step S103, and when it is determined that there is no other folder that has not been executed, a slide show end process is performed (step S110), and this process routine ends.

  If it is determined in step S104 that an audio file group exists in the folder, the CPU 51 executes a process of calculating a total performance time (total playback time) S for the audio file group described later (step S105).

  After calculating the total performance time (total playback time) S for the audio file group, the CPU 51 calculates the interval time T for the image file in the folder (step S106). That is, the CPU 51 calculates the interval time T (= S / M) by dividing the total performance time S by the audio file group calculated in step S105 by the total number M of image files acquired in step S103.

  Then, the CPU 51 sequentially executes the slide show of the images in the folder as the interval time T (step S107).

  Then, the CPU 51 determines whether or not the slide show has been completed for all the image files in the folder (step S108). If it is determined that the slide show has not ended, the CPU 51 returns to step S107 to perform the slide show of the images in the folder. When it is determined that the process has been completed, it is determined whether or not there is another folder that has been selected as a slideshow execution target and has not been executed yet (step S109). When it is determined that there is another folder, the process returns to step S103, and when it is determined that there is no other folder that has not been executed, a slide show end process is performed (step S110), and this process routine ends.

  In the above example, the case where the folder does not contain an image file and the folder is not an audio file is not described. However, in the reproduction of such a folder, along with the reproduction of audio information, Playback is performed while displaying a so-called wallpaper image or an arbitrary image stored in advance in the playback device.

  Next, the processing routine for calculating the total performance time (total playback time) S for the audio file group in step S105 will be described with reference to the flowchart of FIG.

  First, the CPU 51 initializes the calculation process of the total performance time S (step S201). That is, the total performance time S is set to S = 0, and the audio file number N to be processed is set to N = 1. Next, the CPU 51 recognizes the file size FSn of the audio file number N to be processed from the information acquired in step S103, and from the file header of the audio file number N, the bit rate of the audio data of the audio file number N BRn is recognized (step S202).

Then, the CPU 51 calculates the total performance time S,
S = FSn ÷ BRn + S
Is obtained by executing the following equation (step S203).

  Then, the CPU 51 determines whether or not the processing target audio file number N is equal to or greater than the total number of audio files (step S204), and determines that the processing target audio file number N is less than the total number of audio files. The next audio file number is designated as the audio file to be processed (step S205), the process returns to step S202, and the processes after step S202 are repeated.

  If it is determined in step S204 that the processing target audio file number N is equal to or greater than the total number of audio files, the CPU 51 calculates the total performance time S, which is the total performance time for all audio files. This processing routine is terminated, and the process returns to the main routine of FIG.

  As described above, in this embodiment, the total performance time S of the audio file group is divided by the number of image files to be subjected to the slide show, and an interval time that is a display time of a still image of one image file. Since T is set and a slide show is performed, reproduction of an image file group consisting of M image files and an audio file group consisting of N audio files that are not related to each other is started simultaneously as shown in FIG. Can be terminated at the same time.

  When a slide show is continuously executed for a plurality of folders, the total performance time S of the corresponding audio file group is calculated and the still image interval time T is determined for each folder. Thus, the slide show of a plurality of still images matches the end point of the audio file playback.

  For this reason, for example, a slide show of still images taken at the sea is performed with BGM related to the sea, and, after the end, a slide show of still images taken at the mountains is performed with BGM related to the mountains. You can do a comfortable slide show.

  In this embodiment, when one still image is displayed, it is not necessary to access the image data until the display image is updated to the next still image. Access and decode. The image data is accessed only when the still image is updated. At the time of accessing the image data, the sound continues to be reproduced using the sound data stored in the sound buffer.

[Other Embodiments]
In the above-described embodiment, the image file group and the audio file group used as the slide show BGM are registered in one folder so as to be associated with each other. However, the image file group and the audio file group used as the slide show BGM are associated with each other. Is not limited to such a method.

  For example, a plurality of music pieces that will be a slide show BGM are stored in advance as audio files in the data reproduction device, and an appropriate BGM music audio file is stored in the image slide show. A plurality of audio files may be selected.

  That is, in the playback apparatus in this embodiment, as shown in FIG. 6, a BGM audio file storage unit 71 is provided, an audio file is written into the BGM audio file storage unit 71, and a BGM audio file is stored. A writing / reading unit 72 for reading an audio file from the unit 71 is provided by connecting to the system bus 54.

  Then, in the data reproducing apparatus, for example, when a music CD is loaded as the optical disc 11, the audio data of the music selected by the user from the CD is written / read out according to the user's instruction. 72, a function of controlling to write into the BGM audio file storage unit 71 as an audio file is provided. This function is provided as a function of the control unit 50.

  In addition, prior to the start of the slide show, the data reproduction apparatus stores one or more audio files in the audio file group stored in the BGM audio file storage unit 71 as the image file group to be subjected to the slide show. A function of accepting user operations associated with each is also provided. This function is also provided as a function of the control unit 50.

  In this case, a folder made up of a plurality of image files is recorded on the DVD. When the slide show is performed, the data reproducing apparatus is recorded on the DVD on the screen of the monitor display by using the LCD screen of the user interface 60 or the OSD function as in the case of the above-described embodiment. A list of folders is displayed so that the user can select which folder the image file group is to be the target of the slide show.

  At this time, a list of audio file groups to be BGM stored in the data reproducing apparatus is displayed on the screen, and one or a plurality of audio files associated with the image file group selected as a slide show target are displayed. The data reproducing apparatus is configured to accept the file selection. The data reproducing apparatus stores the correspondence between the received audio file or files and the folder of the image file.

  When the slide show is started in this state, the same processing operations as those in FIGS. 3 and 4 described above are performed, and the slide show is executed. In the case of this embodiment, the total performance time of one or a plurality of audio files associated with each image file folder is calculated as the total performance time S, and the total number of image files in the folder By dividing the performance time, an interval time T per image file is determined.

  Then, the slide show is executed at the determined interval time T in the same manner as described above, and a slide show is made in which the end point of the slide show in units of folders coincides with the end point of reproduction of the audio file.

  The processing program for the above control is stored in the ROM 52 and executed by the CPU 51.

  6 is provided with a function of connecting to the Internet or the like, and an audio file to be reproduced together with an image slide show is taken from a server device on the Internet, stored in the BGM audio file storage unit 71, and used. You may be able to do it.

  FIG. 7 is a block diagram showing a configuration of a data reproducing apparatus according to still another embodiment.

  In the embodiment of FIG. 7, the data reproducing apparatus does not have a BGM audio file storage unit, but instead, for example, a card type memory driver 81 for writing / reading the card type memory 82 is connected to the system bus 54. To do.

  In the embodiment of FIG. 7, the data reproducing apparatus is stored in the memory card 82 instead of the audio file group stored in the BGM audio file storage unit 71 in the case of the embodiment of FIG. The audio file group can be an audio file group that can be associated with the target image file group of the slide show.

  The embodiment shown in FIG. 7 differs from the embodiment shown in FIG. 6 only in using an audio file stored in the card-type memory 82 instead of the BGM audio file storage unit. In the embodiment of FIG. 7, as in the above-described embodiment of FIG. 6, the association between the image file group to be subjected to the slide show and one or a plurality of audio files is made prior to the start of the slide show. By doing so, a slide show can be executed in the same manner as in the embodiment of FIG. 6 described above, and the same effects can be obtained.

  In the embodiment shown in FIGS. 6 and 7, a plurality of image files are stored as a folder on a recording medium such as a DVD. However, the image files do not need to be saved as a folder. That is, prior to the start of the slide show, an image file group to be subjected to the slide show is selected from a plurality of image files recorded on the DVD, and the group-unit image file and one or more image files are selected. A group of audio files can be associated with each other.

[Other variations]
In the above description of the embodiment, the image files are all image data files of still images, but the image files are moving image data. By displaying the frame image as a still image, the image file can include not only still image data but also moving image data.

  However, in this case, still image data for a slide show of an image file of moving image data is registered in advance corresponding to the image file, or the display image is displayed as moving image data at the time of the slide show. When the image file number is reached, it is necessary to extract a specific frame from the moving image data and display the frame as a still image.

  In the above description, the audio file is described as being composed of audio data of BGM music of a slide show, but it is needless to say that not only music but also explanation audio may be used.

  Further, the above-described data reproducing apparatus has been described as a reproducing apparatus that reproduces data from a recording medium such as a DVD or a CD. However, in the apparatus in which a folder or an image file and an audio file are stored in the hard disk in advance, the hard disk The present invention can also be applied to selecting a folder or image file group to be a slide show from folders and image files stored in the folder and selecting one or a plurality of audio files to be played back correspondingly. It is.

  In this case, when the image file group and the audio file group are separately stored on the hard disk, the image file group to be subjected to the slide show and the image file are the same as in the other embodiments described above. It is necessary to select and associate an audio file to be played in association with a group, but when a folder consisting of an image file group and an audio file group is stored, simply select the folder. A slide show that is exactly the same as the processing operation described with reference to FIGS. 3 and 4 can be performed without selecting and associating the audio file.

  The folder management mode is not limited to the folder management mode in the above-described embodiment, and any folder can be used as long as it can identify image files and audio files, the number of files, the file size, and the like. Such a management form may be used.

  Further, the data reproducing apparatus of the present invention can be realized by a personal computer if the personal computer has the function. In addition, the data reproducing apparatus of the present invention can be applied to various types of electronic devices.

1 is a block diagram of an embodiment of a data reproducing apparatus according to the present invention. It is a figure for demonstrating the recording data of the recording medium used as the object of a slide show in embodiment of the data reproduction apparatus by this invention. It is a flowchart for demonstrating the processing operation | movement of the slide show in embodiment of the data reproduction apparatus by this invention. It is a figure for demonstrating the detailed process of one step in the flowchart of FIG. It is a figure for demonstrating the slide show in embodiment of the data reproduction apparatus by this invention. It is a block diagram of other embodiment of the data reproduction apparatus by this invention. It is a block diagram of further another embodiment of the data reproducing apparatus by this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Optical disk, 30 ... Image reproduction output part, 40 ... Audio | voice reproduction output part, 50 ... Control part

Claims (12)

A data reproduction method for reproducing image data of a plurality of image files and audio data of one or more audio files associated with the group of the plurality of image files in parallel. And
An audio playback time calculating step of calculating a total playback time of audio data of the one or more audio files prior to the playback;
Prior to the reproduction, an image reproduction time calculating step for obtaining a predetermined reproduction time per image file by dividing the calculated total reproduction time of the audio data by the number of files of the plurality of image files;
The image data of the plurality of image files are continuously reproduced while switching the image file at predetermined reproduction times per image file calculated in the image reproduction time calculating step, and the image data is reproduced. In parallel, a playback execution step of continuously playing back the audio data of the one or more audio files;
A data reproduction method comprising: The data reproduction method according to claim 1,
The group of the plurality of image files and the one or a plurality of audio files are managed in association with each other as one folder. The data reproduction method according to claim 1,
The plurality of image files and the one or more audio files are managed separately,
An association receiving step of accepting an association operation between the group of the plurality of image files and the one or more audio files. The data reproduction method according to claim 1,
When reproducing a plurality of groups of the plurality of image files, the audio reproduction time calculating step, the image reproduction time calculating step, and the executing step are performed in units of the plurality of image files. A data reproduction method characterized by comprising: The data reproduction method according to claim 2, wherein
When reproducing a plurality of the folders, the audio reproduction time calculation step, the image reproduction time calculation step, and the execution step are performed for each folder. In the data reproduction method according to claim 1,
Each of the image files is a still image data file. In the data reproduction method according to claim 1,
The image file is a mixture of a still image data file and a moving image data file. When the reproduction target is the moving image data file, the image file is extracted from the image data file. A data reproduction method, wherein one still image is reproduced during the predetermined reproduction time. A data reproduction device that reproduces in parallel image data of a plurality of image files and audio data of one or more audio files associated with the group of the plurality of image files. And
Audio reproduction time calculating means for calculating the total reproduction time of the audio data of the one or more audio files;
Image reproduction time calculating means for calculating a predetermined reproduction time per image file by dividing the calculated total reproduction time of the audio data by the number of files of the plurality of image files;
The image data of the plurality of image files are continuously reproduced while switching the image file at predetermined reproduction times per image file calculated by the image reproduction time calculating means, and the image data is reproduced. In parallel with the reproduction execution means for continuously reproducing the audio data of the one or more audio files,
A data reproducing apparatus comprising: The data reproducing apparatus according to claim 8, wherein
The group of the plurality of image files and the one or more audio files are recorded in a common data storage unit as one folder,
A data reproducing apparatus comprising: a reading unit that reads out data recorded in the data storage unit. The data reproducing apparatus according to claim 9, wherein
The audio playback time calculating means calculates the total playback time using information on the size of the audio file and the bit rate of the audio data read from the data storage means by the reading means
The image reproduction time calculating means obtains a predetermined reproduction time per one image file using information on the number of image files read from the data storage means by the reading means. . The data reproducing apparatus according to claim 8, wherein
The plurality of image files are recorded on a first recording medium, the one or more audio files are recorded on a second recording medium,
First reading means for reading data recorded on the first recording medium;
Second reading means for reading data recorded on the second recording medium;
Correspondence for accepting an association operation between the group of the plurality of image files recorded on the first recording medium and the one or plural sound files recorded on the second recording medium. A data reproducing apparatus comprising a receiving means. The data reproducing apparatus according to claim 8, wherein
The plurality of image files are recorded on a recording medium,
Reading means for reading data recorded on the recording medium;
The one or plural audio files are stored in a built-in data storage unit and are read / written, and
Correspondence accepting means for accepting an associating operation between the group of the plurality of image files recorded on the recording medium and the one or more sound files stored in the data storage means. A data reproducing apparatus characterized by the above.

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