JP4291218B2 - AV system and recording medium playback method - Google Patents

Description

  The present invention relates to an AV system for reproducing a recording medium on which files of different contents such as audio and images are recorded.

As an AV system, an AV system is known that reproduces audio and images recorded as files by a user on a writable recording medium such as a semiconductor memory, CD-R, or DVD-R (for example, Patent Document 1). .
Further, as a technique for automatic file reproduction in an AV system, a technique for sequentially reproducing files recorded on a recording medium in accordance with a preset order such as a recording order or a file name order is known.
JP 2002-318598 A

  In the AV system, for example, when reproducing a recording medium in which an audio file and a picture (still image) file are mixedly recorded, when the file is reproduced by applying the automatic reproduction technique, the audio is reproduced. And picture reproduction are sequentially performed in a predetermined order.

  However, since it is not possible to automatically complete the reproduction of the picture without the concept of the reproduction time in this way, there is a need for the user's operation when the reproduction of the picture is completed and the reproduction of the next file is started. Become. Therefore, for example, when the playback order of files is the order in which picture files and audio files are played back alternately, each time an audio file is started to be played, a user operation must be performed. The trouble that must be done arises. Also, when playing back a recording medium in a state in which a picture cannot be displayed, for example, in a state where the display device is used for other purposes such as car navigation, the playback of an audio file is changed to the playback of a picture file. Along with the switching, the output from the AV system to the user is suddenly interrupted, and the user is confused.

  On the other hand, when playing back a recording medium recorded with a mixture of such sounds and images, when considering the designation of the file to be played back from the user, the file name of each file is stored in the recording medium. If it is presented to the user according to the recorded directory structure, it may be difficult for the user to select a file instead. For example, the user may not store files in different directories depending on the type of content such as audio, picture, and video, but may store different content files in the same directory.

That is, in the conventional AV system, when different types of content files are recorded on the recording medium, various inconveniences are caused to the user when reproducing the recording medium.
Therefore, an object of the present invention is to improve user convenience when playing back a recording medium in which different types of content files are recorded.

  In order to achieve the above object, the present invention provides an AV system for reproducing a file recorded on a recording medium, wherein a plurality of files recorded on the recording medium are divided into data for each type of content. File classification unit for classifying according to the type of content stored therein, target category setting unit for selectively setting one of the categories as a target category, and the classification of the target category as the target category And a file reproduction processing unit for performing reproduction processing for reproducing the file to which the file belongs.

According to such an AV system, each file recorded on the recording medium is reproduced for each content type such as audio, picture, video, etc., independently of the reproduction of other types of content files. It can be carried out.
Therefore, for example, the audio file is continuously and automatically reproduced without user intervention while eliminating the situation where the file is reproduced in the order in which the picture (still image) file and the audio file are mixed. It becomes possible.
Here, in such an AV system, it is preferable to provide a file information presenting section for presenting a list of information on files belonging to the section as the target section to the user. In this case, a file operation accepting unit that accepts an operation on a file corresponding to the operated file information in response to an operation on the file information on the list presented by the file information presenting unit is provided. Is good.

  As described above, the information of the file recorded on the reproduction target recording medium is presented to the user for each category in which the file is classified for each type of content such as audio, picture, and video, and the reproduction file is displayed on the presentation. By accepting a file operation such as selection of the file, it is possible to facilitate the handling of the file according to the content type of the user. For example, even if the user does not store the files in different directories depending on the content type, but stores the files of different contents in the same directory, the user can easily specify a specific content type. Specific files can be found, or file operations such as reproduction can be performed only on files of a specific content type.

  Here, in order to achieve the above object, the present invention also provides a file reproduction for performing reproduction processing for reproducing a file stored in a reproduction target volume in an AV system for reproducing a file recorded on a reproduction target recording medium. A virtual recording medium that is a plurality of virtual recording media provided for each type of processing unit and content, and each of the files recorded on the recording medium to be reproduced is stored in the virtual recording medium A virtual recording medium generation unit that sets a virtual recording medium that stores a file that stores data of a corresponding type of content, and a reproduction target volume setting unit that selectively sets one of the virtual recording media as the reproduction target volume It is equipped with.

  According to such an AV system, each file recorded on the recording medium is reproduced for each content type such as audio, picture, video, etc., independently of the reproduction of other types of content files. It can be carried out.

  Here, in the AV system for setting the above virtual storage medium, for each virtual recording medium, a file information presentation unit for presenting a list of information on files stored in the virtual recording medium to the user Is preferably provided. More specifically, the file information presentation unit presents the user with a list of file information stored in each virtual recording medium in a form in which each virtual recording medium is represented as a single recording volume. It is good to make it. In addition, when such a file information presentation unit is provided, the AV system has a file corresponding to the operated file information in response to an operation on the file information on the list presented by the file information presentation unit. It is preferable to provide a file operation receiving unit for receiving operations.

  In this way, when playing back a single recording medium on which a plurality of files with different types of stored content are recorded, it is as if the files of specific types of content are given to the user. It is possible to provide a user interface as if a plurality of recording media storing the above are reproduced. Therefore, it is possible to facilitate the handling of files according to the type of content of the user.

  In the AV system for setting the above virtual storage medium, the content type includes audio and pictures, and the playback target volume setting unit sets the virtual recording medium set for the content type as audio. Is set as the playback target volume, and when playback of the file in the playback target volume of the file playback processing unit is stopped by the user, the playback target volume is set to the type of content that is a picture. It may be switched to the virtual recording medium set in the above. In this case, when the recording / playback target recording medium is a removable recording medium mounted on the AV system, the playback target volume setting unit mounts the recording medium serving as the playback target recording medium on the AV system. It is also preferable that a virtual recording medium set for the content type that is audio is set as the reproduction target volume.

  In the AV system for setting the above virtual storage medium, the content type includes audio and video, and the playback target volume setting unit sets the virtual recording set for the content type as audio. When playback of a file in the playback target volume of the file playback processing unit is stopped by a user when a medium is set as the playback target volume, the playback target volume is set to a content type that is video. Alternatively, the virtual recording medium may be switched to the set virtual recording medium. Further, in this case, when the reproduction target recording medium is a removable recording medium mounted on an AV system, the reproduction target volume setting unit includes a recording medium serving as the reproduction target recording medium in the AV system. It is also preferable that when mounted, a virtual recording medium set for the type of content being audio is set as the reproduction target volume.

By doing so, it is possible to automate at least a part of the switching of the virtual recording medium as the reproduction target volume and reduce the complexity of the operation for the user.
By the way, in each AV system described above, the content type may include at least two types of audio, picture, and video. In each of the AV systems described above, the recording medium serving as the reproduction target recording medium may be any one of CD-R, CD-RW, CD-ROM, DVD-R, DVD-RW, and DVD-ROM. . Further, the AV system to be purchased may be an in-vehicle AV system mounted on a car.

  As described above, according to the present invention, it is possible to improve user convenience when playing back a recording medium on which files of different types of content are recorded.

Hereinafter, embodiments of the present invention will be described taking application to an in-vehicle AV system as an example.
FIG. 1 shows the configuration of an AV system according to this embodiment.
As shown in the figure, the AV system includes an AV processing device 1, a display device 2, an input device 3 such as a touch panel installed on the display surface of the display device 2, an audio output device 4 such as a speaker and an audio amplifier device, and TV broadcasting. And a tuner 5 that receives radio broadcasts, and a CD / DVD drive 6 that is a drive device for a recording disk 61 such as a CD or DVD.

  The AV processing device 1 includes a CPU 11, a memory 12, a display interface 13 connected to the display device 2, an audio output interface 14 connected to the audio output device 4, a tuner interface 15 connected to the tuner 5, and a CD / DVD drive 6. A CD / DVD drive interface 16 to be connected, an input interface 17 to be connected to the input device 3, and a bus 21 to connect the above units are provided. Here, the display interface 13, the audio output interface 14, the tuner interface 15, the CD / DVD drive interface 16, and the input interface 17 process input / output between each connected device and the AV processing device 1. is there.

Next, the functional configuration of such an AV processing apparatus 1 is shown in FIG.
As illustrated, the AV processing apparatus 1 functionally includes an operating system 101, a playback control unit 102 that is an application on the operating system 101, an audio decoder 103 that decodes audio data, and a picture decoder that decodes picture data. 104, a video decoder 105 for decoding video data, and a DVD-Video decoder 106 for reproducing DVD-Video data. These applications are embodied as processes on the AV processing device 1 by the CPU 11 executing a predetermined program.
However, the audio decoder 103, the picture decoder 104, the video decoder 105, the DVD-Video decoder 106, and the like may be provided in the AV processing apparatus 1 as hardware.

In such a configuration, the playback control unit 102 selects either the tuner 5 or the CD / DVD drive 6 as an output source in accordance with a user operation or the like via the input device 3.
When the tuner 5 is selected as the output source, the output of the audio input from the tuner 5 to the audio output device 4 and the output of the video input from the tuner 5 to the display device 2 are controlled.
When the CD / DVD drive 6 is selected as the output source, audio data, picture data, video data, CD / DVD recorded on the CD / DVD mounted on the CD / DVD drive 6 is used. Playback of DVD-Video data recorded on a DVD mounted on the drive 6 is controlled. That is, the decoding of the audio data recorded on the CD / DVD in the audio decoder 103 and the control of the output to the audio output device 4, and the decoding of the picture data recorded on the CD / DVD in the picture decoder 104 and the display device 2 Control of output to the DVD, decoding of the video data recorded on the CD / DVD in the video decoder 105 and control of output to the audio output device 4 and the display device 2, and DVD-Video data recorded on the DVD Decoding by the DVD-Video decoder 106 and control of output to the audio output device 4 and the display device 2 are performed. Here, the video generally indicates content including a moving image and sound to be reproduced in synchronization with the moving image. A picture refers to a still image.

  The AV system corresponds to a recording disk 61 such as a CD-DA, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW. That is, the user can play back audio, pictures, and videos stored on the recording disk 61 by loading the recording disk 61 into the CD / DVD drive 6.

Then, when the playback control unit 102 of the AV system loads a recording disk into the CD / DVD drive 6, it determines the type of the loaded recording disk 61 and the type of recorded application data, and sets the determined type of the recording disk. The corresponding reproduction process is performed.
In other words, when the loaded recording disk is a CD-DA, the audio data of each audio track recorded on the CD-DA is sequentially played back using the audio decoder 103, or the audio track according to a user operation. CD-DA playback processing for playing back audio data.

  In addition, when the loaded recording disk is a DVD-ROM, DVD-R, or DVD-RW in which DVD-Video data is recorded as application data, it is included in the DVD-Video data while using the DVD-Video decoder 106. In accordance with the navigation data and the user operation, the DVD-Video reproduction process for reproducing the presentation data included in the DVD-Video data is performed.

On the other hand, when the loaded recording disc 61 is a recording disc 61 that does not record DVD-Video data as application data and is a recording disc 61 on which a data file is recorded, the playback control unit 102 performs the following. The data disk reproduction process shown is performed.
When the loaded recording disk 61 is a multi-session CD in which a CD-DA session in which an audio track is recorded and a data session such as a CD-ROM session in which a data file is recorded is formed. Is regarded as a recording disk, and data disk reproduction processing is performed on this recording disk. However, CD-DA playback processing may be performed for a CD-DA session.

  Here, as shown in FIG. 2, an audio file, a picture file, and a video file are recorded on the recording disk 61 to be reproduced in the data disk reproduction process in a form included in an arbitrary directory. Further, this directory can be provided on the recording disk 61 in a tree structure with the root directory as the root.

  The recording disk 61 records file system management information describing the hierarchical structure of the directories, directory names, recording directories and file names of the files. For example, if the recording disk 61 is a CD / DVD that records files in a form accessible according to the IS-O9660 file system, the volume descriptor, path table, and directory record correspond to this file system management information. Become. Similarly, in other file systems such as UDF, FAT32, HFS, and HFS + based on ISO-13346, file system management information describing the directory hierarchy structure, directory names, file recording directories, and file names. Is recorded.

FIG. 3 shows the procedure of the data disk reproduction process.
As shown in the figure, in this process, the playback control unit 102 first generates three virtual volumes, an audio volume, a picture volume, and a video volume (step 302). Next, the file system information is read from the recording disk 61 to acquire the directory structure and directory name (step 304), and the virtual folders corresponding to each directory are set to three virtual volumes, an audio volume, a picture volume, and a video volume. (Step 306). Here, the directory name of the corresponding directory is used as it is as the folder name of the virtual folder to be created. However, the folder name of the virtual folder corresponding to the root directory uses a predetermined folder name, for example, “root”.

  Then, the file information of each file stored in each directory is acquired (step 308). The file information acquired here includes the file name of the file and the type indicating whether the file is an audio file, a picture file, or a video file, that is, information indicating the type of content stored in the file. However, an extension included in the file name may be used as the information indicating the file type. That is, for example, a file with a file name with an extension such as mp3, aac, or wma is determined as an audio file, and a file with a file name with an extension such as jpg, jpeg, or gif is a picture file. A file having a file name with an extension such as mpg, mpeg, mov, wmv, avi may be determined as a video file. Alternatively, the file may be actually accessed, the content of the file is analyzed, the content type of the file is determined, and information indicating the file type may be acquired.

  Then, the acquired file information of each file is stored in a virtual folder corresponding to the directory in which the file is stored directly without passing through another directory in the virtual volume corresponding to the content type of the file (step 310). Note that files that cannot be classified as audio files, picture files, or video files, or files that cannot be decoded by the AV system are ignored.

  When file information acquisition and storage in a virtual folder are completed for all files, a virtual folder in which no file information is stored and a virtual volume in which no file information is stored are deleted ( Step 312).

  Then, it is determined whether or not at least one audio file has been recorded on the recording disk 61 (step 314). If it has been recorded, an audio playback mode is set (step 316), and a file playback process is started (step 318). ). Then, it waits for the recording disk 61 to be unmounted (step 320). If the recording disk 61 is unmounted, the entire virtual volume is erased (step 322), and the process is terminated.

  On the other hand, if no audio file has been recorded on the recording disc 61, it is determined whether or not at least one picture file has been recorded on the recording disc 61 (step 324). A mode is set (step 326), and file reproduction processing is started (step 318). Then, it waits for the recording disk 61 to be unmounted (step 320). If the recording disk 61 is unmounted, the entire virtual volume is erased (step 322), and the process is terminated.

  If neither an audio file nor a picture file is recorded on the recording disk 61, it is checked whether or not at least one video file is recorded on the recording disk 61 (step 328). Is set (step 330), and file reproduction processing is started (step 318). Then, it waits for the recording disk 61 to be unmounted (step 320). If the recording disk 61 is unmounted, the entire virtual volume is erased (step 322), and the process is terminated.

On the other hand, if no audio file, picture file, or video file is recorded on the recording disk 61, an error is displayed on the display device 2 (step 332), and the process waits for the recording disk 61 to be unmounted (step 334). Exit.
As a result of the above-described disc playback processing, as shown in FIG. 4, when an audio file is recorded on the recording disc 61, an audio volume is generated as a virtual volume, and the audio file recorded on the recording disc 61 is recorded. Everything is associated with the audio volume by the file information of each audio file. When a picture file is recorded on the recording disk 61, a picture volume is generated as a virtual volume, and all of the picture files recorded on the recording disk 61 are associated with the picture volume by the file information of each picture file. It is done. When a video file is recorded on the recording disk 61, a video volume is generated as a virtual volume, and all the video files recorded on the recording disk 61 are associated with the video volume by the file information of each video file. It is done.

  For directories storing audio files directly or via other directories, a corresponding virtual folder is provided in the audio volume. Then, the file information of each audio file is stored in a virtual folder corresponding to the directory that directly stores the audio file. For directories that store picture files directly or via other directories, a corresponding virtual folder is provided in the picture volume. Then, the file information of each picture file is stored in a virtual folder corresponding to the directory that directly stores the picture file. For directories that store video files directly or via other directories, a corresponding virtual folder is provided in the video volume. Then, the file information of each video file is stored in a virtual folder corresponding to the directory that directly stores the video file.

  That is, according to the above processing, logically, one volume of the recording disk 61 is an audio volume storing only an audio file, a picture volume storing only a picture file, and a video storing only a video file. The three virtual volumes of the volume are divided while maintaining the hierarchical structure of files and directories as the hierarchical structure of file information and virtual folders.

Next, the file reproduction process started at step 318 of the data disk reproduction process will be described.
FIG. 5 shows the procedure of this file reproduction process.
As shown in the figure, in this process, first, it is checked whether the currently set mode is an audio playback mode, a picture playback mode, or a video playback mode (step 502).
In the audio reproduction mode, the audio file indicated by each file information in the audio volume is reproduced for the audio volume that is a virtual volume.
That is, first, an audio playback window is displayed on the display device 2 (step 504).
As shown in FIG. 6a, the audio playback window has a menu button 601, a folder display area 611 showing a list of folder names of virtual folders of the audio volume, and audio in which file information is stored in any of the virtual folders. A file display area 612 showing a list of file names of files and an audio control area 613 are provided. However, the file display area 612 may display information other than the file name, for example, the title, album, artist, etc. acquired from the tag information in the audio file.
During playback of the audio file, the audio control area 613 includes a volume button 614 for accepting a user volume change operation, scan playback for sequentially playing back the audio file, repeat playback for playing back the audio file repeatedly, and audio file playback. A playback order mode button 615 for accepting setting of a playback order mode such as mixed playback for random playback, a playback stop button 616 for accepting an instruction to stop playback from the user, and an instruction to pause playback from the user A playback pause button 617 for receiving, a playback fast forward button 618 for receiving a playback fast forward instruction from the user, a playback fast reverse button 619 for receiving a playback fast reverse instruction from the user, and an audio file to be played back A playback skip button 620 for accepting an instruction to change to the next audio file from the user, a playback backward skip button 621 for accepting an instruction to change the audio file to be reproduced to the previous audio file, and the like. Yes. During playback stop / pause of the audio file, the audio control area 613 is provided with a playback start button for accepting a playback start instruction from the user instead of the playback pause button 617.

At the start of playback of the audio file, the virtual folder including the file information of the audio file is set to the selected state, and the folder name is highlighted in the folder display area 611 and included in the selected virtual folder. A list of file names of the audio files corresponding to the file information to be displayed is displayed in the file display area 612 with the file name of the audio file being reproduced being highlighted.
On the other hand, if any folder name is selected by the user in the folder display area, the corresponding virtual folder is set to the selected state, the folder name is highlighted, and the display of the file display area 612 is selected. The file name list of each audio file corresponding to the file information included in the virtual folder set in the state is switched.

  Now, returning to the file playback process of FIG. 5, if such an audio playback window is displayed (step 504), then the audio file is played back in the playback sequence according to the current playback order mode from the current audio file. Thereafter, the audio file being reproduced is set as the current audio file (step 506). Here, the initial value of the current audio file is, for example, the audio file indicated by the file information at the head of the head virtual folder of the audio volume.

  Here, the virtual folders are ordered according to a predetermined rule. This rule may be a rule that orders each virtual folder according to the order when sorted by folder name, or a rule that orders virtual folders according to the hierarchical structure of the virtual folder, for example. . Further, the order in the virtual folder of each audio file corresponding to each file information in each virtual folder is also determined according to a predetermined rule. This rule may be, for example, a rule for ordering the audio files according to the order when sorted by file name.

  The reproduction sequence according to the current reproduction order mode is, for example, the following sequence. That is, when scan playback is set as the playback order mode, the audio file indicated by the file information stored in the selected virtual folder is selected in the virtual folder while the virtual folder is selected according to the order of the virtual folder. Play sequentially according to the order of the audio files. In addition, when repeat playback is set as the playback order mode, the audio file indicated by the file information stored in the virtual folder being played is sequentially played back according to the order of the audio files in the virtual folder. Do. When mixed playback is set as the playback order mode, audio files indicated by the file information stored in the selected virtual folder are sequentially played back in random order while randomly selecting a virtual folder. Note that the initial value of the playback order mode is, for example, scan playback, and is subsequently changed according to the user's operation of the playback order mode button 615.

  When the reproduction is started, the occurrence of the user operation is monitored (step 508). When the user operation occurs, it is checked whether the generated user operation is the operation of the menu button 601 (step 510). If it is an operation, menu processing is performed (step 520), and the process returns to step 502.

  In this menu process, for example, display of a playback mode switching menu, reception of a playback mode switching operation, switching of a playback mode according to the playback mode switching operation, and the like are performed. In this menu process, when the playback mode is switched from the audio playback mode to another mode, the audio playback is stopped simultaneously with the switching. Also, in this menu process, when the playback mode is switched from the video playback mode to another mode, the video playback is stopped simultaneously with this switching.

  On the other hand, if the generated user operation is not an operation of the menu button 601, processing corresponding to the generated user operation is performed (step 512). That is, the user operation is performed by the volume button 614, playback order mode button 615, playback stop button 616, playback pause button 617, playback fast forward button 618, playback fast rewind button 619, etc. If the operation is a playback skip button 620, playback backward skip button 621, or playback start button, the processing corresponding to each button 619 (volume change processing, playback order mode setting processing, playback stop processing, playback pause processing, etc.) Playback fast forward processing, playback fast reverse processing, playback skip processing, playback backward skip processing, playback start / resume processing). On the other hand, if the user operation is an operation for selecting any one of the folder names in the folder display area 611 (for example, a click operation for the folder name), the corresponding virtual folder is set to the selected state, and in the folder display area 611, The folder name is highlighted, and the display of the file display area 612 is changed to a list of file names of audio files corresponding to the file information included in the virtual folder set in the selected state as described above. .

  If the user operation is selection of any folder name in the folder display area 611 and playback start operation (for example, double-click operation of the folder name), the file information stored in the virtual folder of the selected folder name One audio file is selected from the audio files corresponding to, according to the playback order mode, set as the current file, and playback of the audio file in the playback sequence according to the current playback order mode is started from the current audio file.

  If the user operation is a selection of any file name in the file display area 612 and a playback start operation (for example, a double-click operation of the file name), the audio file corresponding to the selected file name is made the current file. Set and start playback of the audio file in the playback sequence according to the current playback order mode from the current audio file.

  Next, it is determined whether or not the generated user operation is an operation of the reproduction stop button 616 (step 514). If the operation is not an operation of the reproduction stop button 616, the process returns to step 508 to wait for the next user operation. On the other hand, if the generated user operation is an operation of the playback stop button 616, it is checked whether or not a picture volume exists (step 516). If it exists, a picture playback mode is set (step 518), and step 502 is performed. Proceed to On the other hand, if there is no picture volume, the process returns to step 508 to wait for the next user operation.

Next, when it is determined in step 502 that the playback mode is the picture playback mode, first, the picture playback window shown in FIG. 6b is displayed (step 522).
As shown in the figure, the picture playback window includes a menu button 601, a file display area 631 that displays a list of file names of picture files, a picture area 632 that displays a played picture, a slide button 633, and a full screen button. 634 and a close button 635 are provided. However, the file display area 631 displays a list of folder names of the virtual folders of the picture volume as shown in FIG. 6c according to the user operation of the folder button 636 displayed when the file display area 631 is displayed. The folder display area 637 shown in FIG. Conversely, the folder display area 637 is switched to the file display area 631 according to the user operation of the file button 638 displayed when the folder display area 637 is displayed.

  Returning to FIG. 5, if the picture playback window is displayed, the current picture file is played back and displayed in the picture area 632 (step 524). Also, in the file display area 631, a list of file names of picture files corresponding to each file information in the virtual folder storing file information corresponding to the current picture file is highlighted, and the file name of the picture file being displayed is highlighted. Display in the form. Then, a virtual folder in which file information corresponding to the current picture file is stored is selected.

  Here, the initial value of the current picture file is, for example, the picture file indicated by the file information at the head of the head virtual folder of the picture volume. Here, the order of each virtual folder in the picture volume and the order in the virtual folder of each picture file corresponding to each file information in each virtual folder of the picture volume are the same as in the case of the audio volume. Determine according to.

Then, occurrence of a user operation is monitored (step 526).
If a user operation occurs, it is checked whether the generated user operation is an operation of the menu button 601 (step 528). If the user operation is a menu button operation, the above-described menu processing is performed (step 520), and the process returns to step 502. .
On the other hand, if the generated user operation is an operation of the close button 635 (step 530), it is checked whether an audio volume exists (step 534), and if it exists, an audio playback mode is set (step 536). ), The process returns to step 502. On the other hand, if there is no audio volume, the above-described menu processing is performed (step 520), and the process returns to step 502.

If the generated user operation is other operation, processing corresponding to the user operation is performed (step 532), and the process returns to step 526 to wait for the next user operation.
As processing according to the user operation performed in step 532, switching between the file display area 631 and the folder display area 637 corresponding to the file button 638 and the folder button 636 described above, and selection of a folder name in the folder display area 637 are performed. Acceptance and selection of a file name in the file display area 631 and acceptance of a display operation are included.

  That is, the playback control unit 102 highlights the folder name of the virtual folder that is selected in the state where the folder display area 637 is displayed. In the folder display area 637, a folder name selection operation (for example, a folder name click operation) is accepted, and the virtual folder to be selected is switched to a virtual folder corresponding to the selected folder name. If the file button 638 is operated in this state, the file display area 631 is displayed instead of the folder display area 637, and the picture file corresponding to the file information stored in the selected virtual folder is displayed. Display a list. When a file name selection and display operation (for example, a double click operation on the file name) is accepted in the file display area 631, the picture file having the selected file name is stored as a current file in the picture file. The picture is displayed in the picture area 632.

  Further, the process corresponding to the user operation performed in step 532 includes a slide display process corresponding to the slide button operation. That is, when a slide button operation occurs, the playback control unit 102 sequentially sets the pictures stored in the picture files corresponding to the file information stored in the virtual folder that is currently selected to be the current file. The images are displayed in the picture area 632 at regular intervals.

  In addition, the processing corresponding to the user operation performed in step 532 includes display of the picture area 632 on the entire surface of the display device 2 according to the operation of the full screen button 634. Note that the display of the picture area 632 on the entire display device 2 is restored to the display of the picture playback window shown in FIGS. 6b and 6c in accordance with a predetermined operation by the user (for example, a click operation at an arbitrary position). .

Next, when it is determined in step 502 that the playback mode is the video playback mode, first, the video playback window shown in FIG. 6d is displayed (step 538).
As shown in the figure, the video playback window includes a menu button 601, a file display area 641 that displays a list of video file names, a video area 642 that displays the played video, a full screen button 643, and a video control. An area 644 is provided. However, the file display area 641 indicates the folder name of the virtual folder of the video volume in accordance with the user operation of the folder button 645 displayed when the file display area 641 is displayed, as in the picture playback window described above. Switch to the folder display area showing the list. Conversely, the folder display area is switched to the file display area 641 according to the user operation of the file button displayed when the folder display area is displayed.

  Further, the video control area 644 is provided with various buttons for accepting instructions for video playback operations. That is, a volume button 646 for accepting a user volume change operation, a play stop button 647 for accepting a play stop instruction from the user, a play pause button 648 for accepting a play pause instruction from the user, Playback fast-forward button 649 for accepting a fast-forward instruction from the user, playback fast-rewind button 650 for accepting a fast-rewind instruction from the user, and an instruction to change the video file to be played to the next video file Is provided with a playback skip button 651 for accepting from the user, a playback backward skip button 652 for accepting an instruction to change the video file to be played back to the previous video file, and the like. In addition, during the video file playback stop / pause, the video control area 644 is provided with a playback start button for accepting an instruction to start playback from the user instead of the playback pause button 648.

  Now, returning to FIG. 5, when the video playback window is displayed, playback of the current video file is started, and video is displayed in the video area 642 and audio is output (step 540). Also, in the file display area 641, a list of file names of video files corresponding to each file information in the virtual folder in which file information corresponding to the current video file is stored is highlighted. Display in the form. Then, a virtual folder in which file information corresponding to the current video file is stored is selected.

  Here, the initial value of the current video file is, for example, a picture file indicated by the file information at the head of the head virtual folder of the video volume. The order of each virtual folder in the video volume and the order in the virtual folder of each video file corresponding to each file information in each virtual folder of the video volume are in accordance with predetermined rules as in the case of the audio volume. Determine.

Then, occurrence of a user operation is monitored (step 542).
If a user operation occurs, it is checked whether the generated user operation is an operation of the menu button 601 (step 544). If the user operation is a menu button operation, the above-described menu processing is performed (step 520), and the process returns to step 502. .
If the generated user operation is another operation, processing corresponding to the user operation is performed (step 546), and the process returns to step 542 to wait for the next user operation.
As processing according to the user operation performed in step 546, switching between the file display area 641 and the folder display area according to the file button and folder button 645 described above, acceptance of selection of a folder name in the folder display area, Selection of a file name in the file display area 641 and reception of a reproduction start operation are included.

  That is, the reproduction control unit 102 highlights the folder name of the virtual folder that is selected in the state where the folder display area is displayed. In the folder display area, a folder name selection operation (for example, a folder name click operation) is accepted, and the virtual folder to be selected is switched to a virtual folder corresponding to the selected folder name. If the file button is operated in this state, the file display area 641 is displayed instead of the folder display area, and a list of video files corresponding to the file information stored in the selected virtual folder is displayed. indicate. When a file name selection and display operation (for example, a double-click operation on the file name) is accepted in the file display area 641, playback of the video file is started with the video file having the selected file name as the current file. To do.

  Further, as processing according to the user operation performed in step 546, the volume button 646, the playback stop button 647, the playback pause button 648, the playback fast forward button 649, and the playback fast reverse button in the video control area 644 are provided. 650, playback skip button 651, playback backward skip button 652, and processing corresponding to each button performed in response to the operation of the playback start button (volume change processing, playback stop processing, playback pause processing, playback fast forward processing, etc.) Playback rewind processing, playback skip processing, playback backward skip processing, and playback start / resume processing).

  In addition, the process according to the user operation performed at step 546 includes display of the video area 642 on the entire surface of the display device 2 according to the operation of the full screen button 643. Note that the return from the display of the video area 642 on the entire display device 2 to the display of the video playback window shown in FIG. 6D is performed according to a predetermined operation by the user (for example, a click operation at an arbitrary position).

The file reproduction process has been described above.
As described above, according to the present embodiment, each file recorded on the recording medium can be reproduced independently for each type of audio, picture, and video.
Therefore, for example, it is possible to automatically reproduce audio files continuously without user intervention, excluding that the reproduction order of the files is the order in which the picture file and the audio file are mixed. Become.
In addition, the file information of the recording medium is presented to the user as a virtual volume for each content type generated by distributing the file for each content type such as audio and picture, and a playback file is displayed on the presentation. Accept file operations such as selecting That is, when playing back a single recording disc 61 on which a plurality of files with different types of stored content are recorded, a plurality of recordings each storing only a specific type of content file are provided to the user. A user interface can be provided as if a medium is being played. Therefore, it is possible to facilitate the handling of files according to the type of content of the user. That is, for example, even when the user does not store the files in different directories according to the content type, but stores the files of different contents in the same directory, the user can easily specify a specific file. It becomes possible to find a file of a content type or to play back only a file of a specific content type.

  By the way, in the above, when playback of an audio file is stopped, the playback mode is automatically switched from the audio playback mode to the picture playback mode, and the playback target is changed from the audio volume to the picture volume. When the playback of the audio file is stopped, the playback mode may be automatically switched from the audio playback mode to the video playback mode to change the playback target from the audio volume to the video volume.

  In addition, the audio playback mode, the picture playback mode, and the video playback mode are not automatically switched from the audio playback mode to the picture playback mode. For example, the audio playback window of FIG. 7a, the picture playback window of FIG. As shown in the video playback window 7c, each playback window is provided with playback mode switching buttons 701, 702, 703 for accepting an instruction to switch to another playback mode, and in response to a user operation of the playback mode switching button. You may make it perform.

  Further, in the above embodiment, the case where the data file reproduction process and the file reproduction process are performed for the CD and the DVD has been described. However, these processes shown in the present embodiment are performed on any recording medium other than the CD and the DVD. For example, the present invention can be similarly applied to a case where a file recorded on an HDD or a memory card is reproduced.

It is a block diagram which shows the structure of the AV system which concerns on embodiment of this invention. It is a block diagram which shows the function structure of the AV system which concerns on embodiment of this invention. It is a flowchart which shows the data disc reproduction | regeneration processing which concerns on embodiment of this invention. It is a figure which shows the example of a production | generation of the virtual volume used by embodiment of this invention. It is a figure which shows the flowchart of the file reproduction | regeneration processing which concerns on embodiment of this invention. It is a figure which shows the example of a display screen of the AV system which concerns on embodiment of this invention. It is a figure which shows the example of a display screen of the AV system which concerns on embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... AV processing device, 2 ... Display device, 3 ... Input device, 4 ... Audio output device, 5 ... Tuner, 6 ... CD / DVD drive, 11 ... CPU, 12 ... Memory, 13 ... Display interface, 14 ... Audio output Interface, 15 ... tuner interface, 17 ... input interface, 21 ... bus, 101 ... operating system, 102 ... playback controller, 103 ... audio decoder, 104 ... picture decoder, 105 ... video decoder, 106 ... DVD-Video decoder.

Claims (11)

An AV system for playing back a file recorded on a playback target recording medium,
A file reproduction processing unit for performing reproduction processing for reproducing a file stored in the reproduction target volume;
A plurality of virtual recording volumes provided for each type of content, each having the same name as a directory of the recording medium to be reproduced that contains a file storing content data of the type corresponding to the virtual recording volume A virtual folder is provided, and content data of a type corresponding to the virtual recording volume stored in the directory of the recording medium to be reproduced having the same name as the virtual folder is stored in each virtual folder of the virtual recording volume. A virtual recording volume generation unit for setting a virtual recording volume in which the file is stored;
A reproduction target volume setting section for selectively setting any one of the virtual recording volumes as the reproduction target volume;
Each virtual recording volume has a file information presentation unit that hierarchically presents the virtual folder and file information stored in the virtual recording volume to the user according to the hierarchy of the virtual folder. AV system. The AV system according to claim 1,
A file reproduction unit for each virtual folder that reproduces each file stored in the virtual folder corresponding to the information of the operated virtual folder in response to an operation on the information of the virtual folder presented by the file information presentation unit; AV system characterized by The AV system according to claim 1 or 2, wherein
An AV system, comprising: a file reproduction unit that reproduces a file corresponding to information on an operated file in response to an operation on the file information presented by the file information presentation unit. The AV system according to claim 1,
The type of content includes audio and picture,
The reproduction target volume setting unit reproduces a file in the reproduction target volume of the file reproduction processing unit when a virtual recording volume set for a content type that is audio is set as the reproduction target volume. An AV system characterized in that, when stopped by a user, the reproduction target volume is switched to a virtual recording volume set for a content type which is a picture. The AV system according to claim 4,
The reproduction target recording medium is a removable recording medium mounted on an AV system,
The reproduction target volume setting unit sets, as the reproduction target volume, a virtual recording volume set for a content type that is audio when a recording medium serving as the reproduction target recording medium is mounted on the AV system. AV system characterized by this. The AV system according to claim 1,
The type of content includes audio and video,
The reproduction target volume setting unit reproduces a file in the reproduction target volume of the file reproduction processing unit when a virtual recording volume set for a content type that is audio is set as the reproduction target volume. An AV system characterized in that, when stopped by a user, the playback target volume is switched to a virtual recording volume set for the type of content being video. The AV system according to claim 6, wherein
The reproduction target recording medium is a removable recording medium mounted on an AV system,
The reproduction target volume setting unit sets, as the reproduction target volume, a virtual recording volume set for a content type that is audio when a recording medium serving as the reproduction target recording medium is mounted on the AV system. AV system characterized by this. The AV system according to claim 1,
The AV system characterized in that the content types include at least two types of audio, picture, and video. The AV system according to claim 1,
An AV system, wherein the recording medium to be reproduced is a CD-R, CDRW, CDROM, DVDR, DVDRW, or DVDROM. The AV system according to claim 1,
The AV system is an in-vehicle AV system mounted on an automobile. A computer program that is read and executed by a computer,
The computer program is an AV system that reproduces a file recorded on a reproduction target recording medium.
A file reproduction processing unit for performing reproduction processing for reproducing a file stored in the reproduction target volume;
A plurality of virtual recording volumes provided for each type of content, each having the same name as a directory of the recording medium to be reproduced that contains a file storing content data of the type corresponding to the virtual recording volume A virtual folder is provided, and content data of a type corresponding to the virtual recording volume stored in the directory of the recording medium to be reproduced having the same name as the virtual folder is stored in each virtual folder of the virtual recording volume. A virtual recording volume generation unit for setting a virtual recording volume in which the file is stored;
A reproduction target volume setting section for selectively setting any one of the virtual recording volumes as the reproduction target volume;
For each virtual recording volume, the virtual folder and file information stored in the virtual recording volume are caused to function as an AV system having a file information presentation unit that presents the user hierarchically according to the hierarchy of the virtual folder. A computer program characterized by the above.

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