JP2006221746A - Disk reproduction apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk reproduction apparatus in which the time required before reproduction and introduction (sound production) after a change of a disk and selection of music, is reduced, the immediate reproduction after the disk change can be performed without interrupting sounds and when the same music is recorded to a plurality of the disks, the music can be omitted from the target for the selection of the music at the time of random reproduction. <P>SOLUTION: The apparatus is equipped with an operation detecting means 3 which has a disk reproducing equipment and audio equipment other than the same, and detects the operation of the audio equipment, read ahead memory means 6, 7, 8 which read ahead and stores the information recorded in the disk reproduced by the disk reproduction equipment during the operation of the audio equipment other than the disk based on the output of the operation detecting means 3, and information reproduction means 9, 11, 12 which reproduce the music corresponding to the read ahead information stored in the read ahead memory means during changing of the music of the disk or changing over of the disk based on the output of the read ahead memory means 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disc playback device, and more particularly to a changer-type disc playback device as one of devices constituting a disc playback audio unit.

  Conventionally, after removing a disc during playback, even if the same disc is set again and the next playback is continued, playback can be resumed from the last playback on the same condition as the previous playback. There is a disc reproducing apparatus that can be used (for example, see Patent Document 1).

JP 2001-312851 A

  However, in the case of the conventional apparatus as described above, the information in the disk is read only when there is a reproduction request to the disk reproduction apparatus. The time required from request to sound may be longer, and after changing a disc and selecting a song, the time required to silence the playback of the selected track on the next disc is long. If random playback is performed when multiple discs are stored, the song information may not be known only by managing the disc number and song number, and the same song may be played many times during random playback. There were problems such as.

  The present invention has been made to solve the above-described problems. After selecting a disc from another device or changing to another disc in the disc playback device regardless of the information format in the disc, the present invention selects the disc. Can be played immediately after a disk change without interrupting the sound, and when the same song is recorded on multiple discs, It is an object of the present invention to obtain a disc reproducing apparatus capable of omitting the music from the music selection target at the time of random reproduction.

  The disc playback apparatus according to the present invention comprises a disc playback device and other audio equipment, an operation detection means for detecting the operation of the audio equipment, and the operation of the audio equipment based on the output of the operation detection means. Pre-read storage means for pre-reading and storing information recorded on the disk to be played back by the disk playback device, and storing in the pre-read storage means at the time of change of the disk song or switching of the disk based on the output of the pre-read storage means And information reproducing means for reproducing music corresponding to the pre-read information.

  This invention can select the disk from the audio equipment or change to another disk in the disk drive unit, and can shorten the time required for playback and sound output after selecting the music, and immediately after the disk change without interrupting the sound. There is an effect that reproduction can be performed.

An embodiment of the present invention will be described below with reference to FIGS.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing a configuration of a disk reproducing apparatus according to Embodiment 1 of the present invention.
In FIG. 1, the disc playback apparatus includes an operation detection unit 3 that detects operations of other music media such as the radio 1 and the cassette 2, and other music media such as the radio 1 and the cassette 2 are operated by the operation detection unit 3. Is detected, the original playback mode related to the disk drive unit 4 in which a plurality of disks are stored based on the detected output, and various information and music of the plurality of disks when the user is not playing the disk. The operation control means 5 for selectively controlling the operation of the pre-reading mode for reading and storing the intro part (sound output) while the radio 1 and the cassette 2 are used, and the operation selected and controlled by the operation control means 5 In the case of the pre-reading mode according to the operation mode determined by the selection operation determination unit 6 and the selection operation determination unit 6 for determining the mode, Various information of a plurality of discs stored in the disc drive unit 4, particularly information of the first part and each song intro part are stored in the storage means 8. In the case of so-called random reproduction, at least each song in the disc is stored. Each music storage control means 7 for taking out a predetermined time, for example, the first part of each music, that is, the head part several seconds, and storing it in the memory means 8 is provided.

  Further, the disk reproducing apparatus reproduces information from each disk of the disk drive unit 4 in the normal reproduction mode according to the operation mode determined by the selection operation determining means 6, and the reproducing means 9 A speaker 10 that emits the reproduction output from the outside as, for example, music information, and a disc music end detection means 11 that detects the end of the final song of the disc from a specific portion of the reproduction output from the reproduction means 9, for example, its lead-out signal. And a storage reading means for controlling the storage means 8 based on the output from the disk song end detection means 11 and reading the next song or the contents of the next disk from the speaker 10 at the time of change of music or switching of the disk. 12.

  The operation control means 5, the selection operation determination means 6, each music storage control means 7, and the storage means 8 are information recorded on a plurality of disks during the operation of devices other than the disk based on the output of the action detection means 3. Or pre-recording storage means for pre-reading and storing at least the head portion of the music, and the reproducing means 9, the disk music end detecting means 11 and the memory reading means 12 are arranged on the basis of the output of the pre-reading storage means. The information reproducing means for reproducing the music corresponding to the information stored in the prefetch storage means 8 at the time of switching is configured.

Next, the operation will be described with reference to FIGS.
First, the operation of the disc reproducing apparatus according to the first embodiment will be described with reference to the flowchart of FIG.
When it is found from the detection output from the motion detection means 3 that other music media such as the radio 1 and the cassette 2 are being used, the motion control means 5 performs the TOC in the plurality of disks stored in the disk drive unit 4. (Table of Contents) information and FileSystem information of all MP3 files and WMA files are read (step ST1), and then the intro part of each song is read for N seconds (step ST2). The data is stored in, for example, the RAM-A in the storage means 8 via a selection operation determination means 6 and each music storage control means 7. At this time, the number of time seconds accumulated in the storage means 8 is set to be longer than the time required for direct reproduction by the information from each disk of the disk drive unit 4.

  Next, similarly, ID-3 Tag information (data such as song name / artist name recorded in the MP3 file) attached to each song is read (step ST3) and stored in the RAM-B in the storage means 8. At this time, each song storage control means 7 compares each song using the AirristName and TrackTitle stored in the RAM-B in the storage means 8 (step ST4), and the information of both songs to be compared are the same. That is, if both have the same Tag information, it is determined that both are the same music, and one of the two music having the same Tag information is deleted and removed from the music selection target at the time of random reproduction (step ST5). The above processing is checked for all the songs in the disk of the disk drive unit 4 (step ST6), and when all the songs in the disk are checked, all the disks stored in the slots of the disk drive unit 4 are further checked. A similar check is performed (step ST7). If all the disks have not been checked, the process returns to step ST4 and the above operation is repeated.

  When the original reproduction mode related to the disk drive unit 4 is determined by the selection operation determination unit 6 via the operation control unit 5, the music information from the disk drive unit 4 is reproduced by the reproduction unit 9 and is output from the speaker 10. On the other hand, when it is desired to switch to listen to music information stored in the storage means 8 to another tune or another disk, it is possible to read, for example, the read of the disk from the re-output from the playback means 9. The end of the last song on the disc is detected by the disc song end detection means 11 from the out signal, and when this detection output is received, the storage reading means 12 reads the next song or the next disc song from the storage means 8 and reproduces it. It will be.

  As a result, it is possible to select a disk from another device or change to another disk in the disk drive unit 4 to shorten the time required for playback and intro (sound generation) after selecting a song, and the sound is interrupted. Thus, it is possible to perform playback immediately after the disk change.

Next, a playlist management method at the time of random playback will be described.
At the time of reading ID-3Tag of all the compressed audios of all the discs, AiristName and TrackName are stored in the RAM-B in the storage means 8 in association with the disc number and the track number. After all the information has been stored, a random music selection playlist as shown in FIG. 4 is created by scanning the RAM-B and omitting tracks having the same AirstName and the same TrackName.

Next, a control method at the time of a disk change will be described with reference to FIG. 3, taking as an example random playback for all the disks in the slot of the disk drive unit 4.
Normally, music data is reproduced using pre-read data in a shock proof memory (seismic memory) SPM of the storage means 8 to prevent sound skipping. In FIG. 3, when the reproduction of the Track-C of the DISC-A is completed, and the next randomly selected track is the Track-C of the DISC-C, the RAM-A of the storage unit 8 is stored in Step ST2 of FIG. The reproduction of Track-C of DISC-C is started using the data stored in the disk. In the meantime, the disk change of the slot of the disk drive unit 4 is performed, and when the data of the DISC-C Track-C is encoded into the shock proof memory SPM, the data reading destination is changed from the RAM-A to the shock proof. Switch to the memory SPM and continue playback.

  Also, as shown in FIG. 4, when a random playback function for compressed audio is performed, the same song appears repeatedly during random playback by selecting a song from the random song selection playlist. Can be prevented. That is, in FIG. 4, a random music selection playlist for random reproduction is managed, and the second and sixth songs in the RAM-B in the storage means 8 shown on the left side of FIG. For example, one of the sixth songs DISC = B and T = A is removed from the playlist, and the other second song DISC = A and T = B is left, and the random song selection as shown on the right side of FIG. A playlist is used, and at the time of random playback, these two duplicate songs are managed as one song.

  In this way, by analyzing the recorded songs using the pre-read information, when the same song is recorded on multiple discs, it can be applied to omit the song from the selection target at random playback. Thus, the same song is not reproduced many times during random reproduction, and the disk can be reproduced efficiently and accurately. However, this method is limited to compressed audio playback.

  As described above, according to the present embodiment, various information and music intro portions of a plurality of discs stored in the disc drive unit 4 are displayed when the user is not playing a disc, The storage means 8 pre-reads and stores the information recorded on the disc while the audio device is being used, so that the disc can be selected from other audio devices or can be separated from the disc drive unit 4. It is possible to reduce the time required for playback and sound output after switching to a disk and selecting a song, and playback can be performed immediately after the disk change without interrupting the sound. Also, by analyzing the recorded songs using pre-read information, if the same song is recorded on multiple discs, the song can be omitted from the selection of music during random playback, and there is less redundancy Regeneration can be performed efficiently.

Further, even when the disc is taken out and inserted again by the user, the identification information, that is, the music in the playlist is collated, and if there is a playback history in the past, playback from the same place as the previous time can be resumed. Further, even when the disc to be played back is changed by another user, it is possible to automatically find the disc that was played back last time according to the instruction of the original user and resume playback from the continuation of the previous time. Further, for example, even if the first disc and the second disc are not stored in consecutive slots with a two-disc set or the like, the second disc is automatically searched after the first disc reproduction and the reproduction is continued. be able to.
Further, in order to grasp the user's preference, for example, the storage means 8 is provided with a reproduction number memory (not shown) for counting and storing the number of reproductions of each song, and automatically the original ones in descending order of the number of reproductions. A playlist may be generated, whereby the user's preference can be grasped in cooperation with user entry information and the like.

1 is a block diagram showing a configuration of a disk reproducing device according to Embodiment 1 of the present invention. FIG. 4 is a flowchart for explaining the operation of the disk reproducing apparatus according to the first embodiment of the present invention. It is a figure for demonstrating the control method at the time of the disc change in the disc reproducing | regenerating apparatus by Embodiment 1 of this invention. It is a figure which shows the playlist for random music selection in the disc reproducing | regenerating apparatus by Embodiment 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radio, 2 cassettes, 3 operation | movement detection means, 4 disc drive part, 5 operation control means, 6 selection operation | movement discrimination means, 7 each music storage control means, 8 storage means, 9 reproduction | regeneration means, 10 speaker, 11 disc music end detection Means, 12 Memory reading means.

Claims (3)

An operation detection means for detecting the operation of the audio equipment, comprising a disk playback apparatus and other audio equipment, and a disc played by the disk playback equipment during the operation of the audio equipment based on the output of the operation detection means Pre-read storage means for pre-reading and storing stored information, and pre-read information stored in the pre-read storage means at the time of change or switching of the disk based on the output of the pre-read storage means A disc playback apparatus comprising information playback means for playing back a corresponding song.   The prefetch storage means analyzes the recorded music using the prefetched information, and when the same music is recorded on a plurality of discs, the music is excluded from the music selection target at the time of random playback. The disk reproducing apparatus according to claim 1. 3. The disc reproducing apparatus according to claim 1, wherein the prefetch storage means prefetches and stores information of at least a first part of all songs recorded on the disc.

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