JP2005018874A - Reproducing device for optical disk and its reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To deter the occurrence of abnormal sound or the like due to discontinuity between files in reproduction of a file based on a play list. <P>SOLUTION: A play list 11 in which at least a soundless time is set corresponding to a file name of each file to be reproduced, a file read-out controller 12a with timer function reads out an audio file from an optical disk l based on its play list 11, the output is reproduced by a loudspeaker 15 through a decoder 13, and a volume adjusting mechanism 14, while sound is prevented to output from the loudspeaker 15 during the soundless time by the file read-out controller 12a with timer function. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reproducing apparatus for an optical disc such as a CD-R and a reproducing method thereof.
[0002]
[Prior art]
When playing back compressed audio (mp3, AAC, WMA) recorded on a CD-R or the like, music can be enjoyed in a desired order using a playlist in which the playback order of files to be played back is stored.
[0003]
FIG. 10 shows a playback system using a conventional optical disk playback device. A desired audio file is selected from a plurality of audio files recorded on an optical disc 90 such as a CD-R, and the playback order of the selected audio file is stored in a playback device, thereby creating a playlist 91. FIG. 11 shows an example of this play list 91. The playlist 91 stores selected audio file names in the order of playback. As shown in FIG. 10, when an optical disc 90 such as a CD-R is played, an audio file is read from the optical disc 90 by the read control 92a of the controller unit 92 of the playback device based on the playback order of the playlist 91. Is called. The read audio file is decoded by the decoder 93 and further reproduced from the speaker 95 via the volume adjustment mechanism 94.
[0004]
In the playlist 91, in addition to the playback order of the selected audio file shown in FIG. 11, the playback start time and the required playback time are recorded, so that the desired playback order from the desired playback start time is recorded. It is also possible to perform playback for the playback time.
[0005]
Similarly, when a compressed video (mpg) recorded on a DVD-R or the like is reproduced, the video can be enjoyed in a desired reproduction order using a playlist in which the reproduction order of the files is stored.
[0006]
Also, information including the song number and performance time information can be recorded so that the required performance time of the song selected by the program can be known, and the desired song can be accessed and reproduced sequentially based on this information. It is known (for example, refer to Patent Document 1).
[0007]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 8-212760 (2nd page, 7th page)
[0008]
[Problems to be solved by the invention]
In the technique described in Patent Document 1, when playback is performed based on a playlist in which the playback order of the selected audio file is recorded, playback of the next audio file starts simultaneously with the end of playback of the audio file. Therefore, there is a problem that the files may be discontinuously connected and abnormal noise may occur.
[0009]
In addition to the playback order of the selected audio file, even if playback is performed based on a playlist that records the playback start time and required playback time, playback ends in the middle of the audio file, Since the audio file is started to be reproduced, there is a problem that the audio files are discontinuously connected, and an abnormal sound or the like may occur. Further, since the reproduction of the next audio file is started at the same time as the reproduction of the audio file is finished, there is a problem that the listener or viewer cannot sufficiently enjoy the reproduction of one audio file.
[0010]
In addition, when playback is performed based on a playlist in which the playback order of the selected audio file is recorded, there is a problem in that an interval between playback audio files cannot be arbitrarily set.
[0011]
The present invention has been made in order to solve the above-described problems, and it is possible to suppress the occurrence of abnormal noise or the like due to discontinuous connection between files during file reproduction based on a playlist. An object of the present invention is to provide an optical disc reproducing apparatus and reproducing method.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, one aspect of the optical disk reproducing apparatus of the present invention is set in correspondence with the file name of each file to be reproduced from a plurality of files recorded on the optical disk and the file name. A playlist that stores silent time,
A controller unit that has a built-in timer function and controls reading of a predetermined file from the optical disc based on the playlist;
A decoder for decoding the data read by the controller unit;
Reproducing means for reproducing the data output from the decoder;
The controller unit is characterized in that after the file is read, the silent time is counted by the timer function, and the counted silent time is in a state of no output.
[0013]
According to the above-described embodiment of the present invention, when a file is played based on a playlist, it is possible to suppress the occurrence of abnormal noise or the like due to discontinuous connection between files.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
FIG. 1 shows a playback system using an optical disk playback apparatus according to the first embodiment. A desired audio file is selected from a plurality of audio files recorded on the optical disc 10 such as a CD-R, and the playback order and silent time of the selected audio file are stored in the playback device to create the playlist 11. This playlist 11 may be stored in the optical disc 10 or in the internal memory of the playback device. When stored in the optical disc 10, the playlist stored in the optical disc 10 may be stored in the internal memory of the playback device for playback.
[0015]
FIG. 2A and FIG. 2B show an example of the playlist 11 in the present embodiment. The playlist 11 stores the selected file name and silent time in the order of playback. That is, in FIG. 2A, the silent time is stored after the file name, and in FIG. 2B, the silent time is stored before the file name. For example, in FIG. 2 (a), 'Song1. mp3 'is reproduced from the beginning of the file, and after the reproduction ends, the next' Song3. It is shown that mp3 ′ is reproduced from the beginning of the file, and after the reproduction is finished, the next file is reproduced after two seconds of silence. In FIG. 2 (b), after a silent period of 5 seconds, 'Song1. mp3 'is reproduced from the beginning of the file, and after the reproduction ends, the next' Song3. It is shown that mp3 ′ is reproduced from the beginning of the file, and after the reproduction is finished, the next file is reproduced after two seconds of silence.
[0016]
Next, the operation of the first embodiment will be described with reference to FIGS. When reproducing the optical disk 10 such as a CD-R based on the playlist 11 in FIG. 2A, the first audio file (for example, “') is read from the optical disk 10 by the read control 12a with a timer function of the controller unit 12 of the reproducing apparatus. Song1.mp3 ′ is read in. Here, the read control with timer function 12a sets a silent time of 3 seconds to a timer function (not shown) in order to count the silent time set in the playlist 11.
[0017]
On the other hand, the first audio file “Song1. The music data of mp3 ′ is decoded by the decoder 13 and further reproduced from the speaker 15 via the volume adjustment mechanism 14. When this file reproduction is completed, the read control 12a then maintains a state in which there is no output with the silent period of 3 seconds set in the timer mechanism. Subsequently, the read control with timer function 12a reads the next audio file (for example, 'Song3.mp3') from the optical disc 10 based on the playlist 11, and activates a timer mechanism (not shown) to give a silent time of 2 seconds. Set. The music data of the read audio file is similarly decoded by the decoder 13 and is reproduced from the speaker via the volume adjusting mechanism 14.
[0018]
Similarly, when the file reproduction is finished, similarly, the readout control with timer function 12a maintains a state in which there is no output with 2 seconds counted by the timer function as silent time. In this way, when playing back an audio file, a desired silent time can be inserted and audible in a desired playback order and for each audio file.
[0019]
Therefore, in the present embodiment, a predetermined silent time is inserted between audio files, and the audio files are not discontinuously connected, so that it is possible to suppress the occurrence of abnormal noise or the like. Since the listener can enjoy the reverberation due to the silence period inserted after the reproduction of each file, the listener can fully enjoy the reproduction of one file. Also, by preparing a large number of playlists with desired playback methods set, the optical disc can be played under various playback conditions.
[0020]
Next, a modification of the first embodiment will be described with reference to FIG. 3 is different from FIG. 1 in that a decoder control 12b for controlling the decoder 13 is provided in the controller unit 12. In this case, silence control is performed at the time of decoding processing by the decoder 13 based on the control of the decoder control 12b when reproducing an audio file stored on the optical disc 10 such as a CD-R. Then, the audio file is read from the optical disc 10 by the read control 12 a of the controller unit 12 with a timer function, and is reproduced from the speaker via the volume adjustment mechanism 14. In addition, the decoder 13 is controlled so that the silence signal is output only during the silence period counted by the timer function. In the decoder 13, the silence control is instructed by the decoder control 12d, and the state of no output is maintained in response to the silence signal after the audio file decoding process. Here, an example in which the timer function is shared by the read control 12a and the volume adjustment mechanism 14 has been described, but it is also possible to provide the timer function in each of the read control 12a and the volume adjustment mechanism 14.
(Second Embodiment)
Next, with reference to FIG. 4 and FIG. 5, a playback system using the optical disk playback apparatus according to the second embodiment of the present invention will be described.
[0021]
As in the first embodiment, a desired audio file is selected from the optical disc 30 such as a CD-R, and the playback order, playback start time, fade-in time, playback end time, and fade-out of the selected audio file are selected. The play list 31 is created by storing the time in the playback device.
[0022]
FIG. 5 shows an example of the playlist 31 created according to the second embodiment. The playlist 31 stores the selected file name, playback start time, fade-in (FI) time, playback end time, and fade-out (FO) time. For example, in “Song3.mp3 01:15 FI = 5 03:23 FO = 3” in FIG. 5, the audio file 'Song3. Playback starts after “1 minute 15 seconds” from the beginning of mp3, and a fade-in FI effect that gradually increases the sound is performed for 5 seconds. Also, the audio file 'Song3. When “3 minutes 23 seconds” have passed from the beginning of mp3, playback ends, and at the end, a fade-out FO effect in which the sound gradually decreases is performed for 3 seconds.
[0023]
Next, in “Song5.mp3 00:15 FI = 2 04:10 FO = 8”, the audio file 'Song5. Playback starts after “0 minute 30 seconds” from the beginning of mp3, and a fade-in FI effect that gradually increases the sound is performed for 2 seconds at the start. Also, the audio file 'Song5. When “4 minutes and 10 seconds” have elapsed from the beginning of mp3, playback ends, and at the end, a fade-out FO effect in which the sound gradually decreases is performed for 8 seconds. The next audio file 'Song2. The reproduction start time “A” of mp3 indicates that all of the reproduction from the beginning to the end is reproduced.
[0024]
Next, the operation of the second embodiment will be described. When playing back the optical disc 30 such as a CD-R based on the playlist 31 shown in FIG. 5, for example, the first audio file 'Song3. Reading of mp3 ′ is started. Here, the read control 32a with a timer function starts a timer (not shown) and counts the read start time of 1 minute 15 seconds and the end time. Until the start time elapses, no read signal is output from the read control 32a with a timer function to the decoder 33. After the start time elapses, the audio file 'Song3. The music data read from mp3 ′ is decoded by the decoder 33 and further reproduced from the speaker 35 via the volume adjustment mechanism 34.
[0025]
At this time, the volume adjusting mechanism 34 uses a fade-in signal output from the volume control 32c with a timer function based on the play list 31 to perform a fade-in effect (sound gradually from 1 minute 15 seconds to 5 seconds when playback is started). The processed signal is output, and then a signal of a predetermined setting level is output and reproduced by the speaker 35. Similarly, in the stop operation, the volume adjusting mechanism 34 uses the fade-out signal output from the volume control 32c based on the playlist 31 to make a fade-out effect (sound gradually decreases from 3 minutes 20 seconds to 3 seconds before the end). ) The processed signal is output and reproduced by the speaker 35.
[0026]
Next, the audio file 'Song5. mp3 ',' Song2. mp3 ′ is processed and reproduced in the same manner, but the description thereof is omitted. However, the audio file 'Song2. In mp3 ′, since no start time and no end time are set, all music data is reproduced.
[0027]
In this way, in the second embodiment, since the fade-in time and the fade-out time can be set between the audio files and the reproduction can be performed in a desired reproduction order, the audio files are not discontinuously connected. It is possible to suppress the occurrence of abnormal noise. The listener can enjoy the reverberation by the fade-out time and the fade-in time inserted after the audio file is reproduced, so that the reproduction of one file can be sufficiently enjoyed. Further, since the playlist 31 has a small file capacity and can prepare a large number of playlists storing a desired reproduction method, it is possible to reproduce the optical disc created in the original by various desired reproduction methods.
[0028]
(Third embodiment)
Next, with reference to FIG. 6 and FIG. 7, a playback system using the optical disk playback apparatus according to the third embodiment of the present invention will be described.
[0029]
In the third embodiment, an optical disc 50 such as a multimedia compatible DVD-R in which an audio file and a video file are recorded is used. Then, a desired multimedia file is selected from the optical disc, and the playback order, playback start time, fade-in time, playback end time, fade-out time, and silence / no-screen time of the selected multimedia file are played back. And the playlist 51 is created.
[0030]
FIG. 7 shows an example of the playlist 51 created according to the third embodiment. That is, the play list 51 stores a start time, a fade-in (FI) time, an end time, a fade-out (FO) time, and a silence / no-screen time after the selected file name. For example, in “Movie3.mpg 01:15 FI = 5 03:23 FO = 3 2” ′ in FIG. 7, the multimedia file “Movie3. Playback starts after “1 minute 15 seconds” from the beginning of mpg, and at the start, a fade-in FI effect is performed for 5 seconds, with the sound gradually increasing and the screen gradually becoming brighter. In addition, the multimedia file 'Movie3. When “3 minutes 23 seconds” have elapsed from the beginning of mpg, the playback ends, and at the end, a fade-out FO effect is performed for 3 seconds, with the sound gradually decreasing and the screen gradually darkening. After that, the silence and no-screen time continues for 2 seconds.
[0031]
In the next “Movie5.mpg 00:30 FI = 2 04:10 FO = 83”, the multimedia file “Movie5. Playback starts after “0 minute 30 seconds” from the beginning of mpg, and at the start, a fade-in FI effect is performed for 2 seconds in which the sound gradually increases and the screen gradually becomes brighter. Also, the multimedia file 'Movie5. When “4 minutes and 10 seconds” have elapsed from the beginning of “mpg”, the reproduction ends, and at the end, a fade-out FO effect in which the sound gradually decreases and the screen gradually darkens is performed for 8 seconds. Thereafter, the silent and non-screen time continues for 3 seconds.
[0032]
Next, the operation of the third embodiment will be described. When playing back the optical disc 50 such as a DVD-R based on the playlist 51 shown in FIG. 7, the audio data and the audio read control 52a with timer function and the video read control 52d with timer function of the controller unit 52 of the playback device are used. Video data reading control is performed. Further, the volume adjustment mechanism 54 and the fader adjustment mechanism 57 are adjusted by the audio volume control 52c with timer function and the video fader control 52f with timer function. Here, the brightness adjustment of the video data is referred to as “fader adjustment”, but it corresponds to the volume adjustment of the audio data, and is also referred to as “volume adjustment” together with the audio data.
[0033]
For example, the audio read control 52a and the video read control 52d based on the playlist 51 may be sent from the optical disc to the multimedia file 'Movie3. Read mpg '. Here, the audio read control 52a and the video read control 52d start counting with a start time of 1 minute 15 seconds and an end time of 3 minutes 23 seconds by a built-in timer (not shown).
[0034]
As in the second embodiment, the read signal is not output from the audio read control 52a and the video read control 52d to the audio decoder 53 and the video decoder 56 until the start time elapses. Then, during the period from the elapse of the start time to the end time, the multimedia file “Movie3.Movie” is read by the audio read control 52a and the video read control 52d. The audio data and the video data read from mpg ′ are decoded by the audio decoder 53 and the video decoder 53 and reproduced from the speaker 55 and the display screen 58 via the volume adjustment mechanism 54 and the fader adjustment mechanism 57.
[0035]
At this time, the volume adjustment mechanism 54 and the fader adjustment mechanism 57 respectively start reproduction from the audio volume control 52c and the video fader control 52f based on the playlist 51, from 1 minute 15 seconds to 5 seconds. Produces a signal that has been faded-in processed. In other words, during 5 seconds after fading in, playback is performed in which the sound gradually increases and the video screen gradually becomes brighter. Further, when 3 seconds before the end time (3 minutes 23 seconds), the volume adjustment mechanism 54 and the fader adjustment mechanism 56 perform a fade-out effect process for 3 seconds by a fade-out signal from the audio volume control 52c and the video fader control 52f. Playback is performed from the speaker 55 and the display screen 58 so that the sound is gradually lowered and the video screen is gradually darkened. Thereafter, for 2 seconds of silent time, the speaker 55 is silent and the display screen 58 is silent and ends. Other multimedia files' Movie5. mpg''Movie2. Mpg ′ is processed in the same manner, but the description thereof is omitted.
[0036]
In this way, according to the third embodiment, the fade-in time and the fade-out time, as well as the silence and no-screen time, can be set between the multimedia files, and can be reproduced in the desired reproduction order.
[0037]
Therefore, since the multimedia files are not discontinuously connected, it is possible to suppress the occurrence of abnormal sounds or screen disturbances. The viewer can enjoy the reverberation according to the fade-out time and the fade-in time, silence and no-screen time inserted after each multimedia file is played. it can. In addition, since the playlist has a small file capacity and can prepare a large number of playlists storing the desired reproduction method, it is possible to reproduce the optical disc created in the original by various desired reproduction methods.
[0038]
FIG. 8 shows a modification of the third embodiment, in which an audio decoder control with timer function 52b and a video decoder control with timer function 52e are added to the reproduction system of FIG. In the playlist 51, a silent time and a non-screen time are set. Since the decoding and silence control of the audio decoder 53 by the audio decoder 52b are the same as those described in FIG. 3, the description thereof is omitted.
[0039]
On the other hand, the video decoder control 52e controls the decoding and non-screen processing of the video decoder 56 based on the playlist 51. After the multimedia file is decoded, the non-screen processing is performed by the video decoder 56. It is reproduced from the display screen 58 via the fader adjustment mechanism 57. Since other configurations are the same as those in FIG. 6, description thereof will be omitted.
[0040]
The optical disk may be any information medium that can store audio files such as CD-R, CD-RW, and DVD. The timer function such as each read control may be either a hardware timer device or a timer that counts with software.
[0041]
Although the first to third embodiments have been described above, these may be implemented in various combinations. For example, in the first embodiment, an example in which a file is reproduced as it is from the beginning to the end is described. However, as shown in FIG. 9A, a playlist in which a reproduction start time and a reproduction end time are inserted is created. It is also possible to perform reproduction. In the second embodiment, the example in which the fade-in time and the fade-out time are added is described. However, as shown in FIG. 9B, a playlist is created in which silence time is further inserted before or after the file is played back. However, it is also possible to perform reproduction. In the third embodiment, when playing back an optical disc compatible with multimedia, an example in which playback start time, playback end time, fade-in time, fade-out time, and silence time are added is described. However, the present invention is not limited to this. Instead, it is also possible to create a playlist by selecting an arbitrary condition and perform playback.
[0042]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to suppress the occurrence of abnormal noise or the like due to discontinuous connection between files during reproduction of a file based on a playlist.
[Brief description of the drawings]
FIG. 1 is a diagram showing a playback system of a playback apparatus for an optical disc according to a first embodiment of the present invention.
FIG. 2 is a diagram showing an example of a playlist according to the first embodiment of the present invention.
FIG. 3 is a diagram showing a modification of the reproduction system according to the first embodiment of the present invention.
FIG. 4 is a diagram showing a playback system of a playback device for an optical disc according to a second embodiment of the present invention.
FIG. 5 is a diagram showing an example of a playlist according to the second embodiment of the present invention.
FIG. 6 is a diagram showing a playback system of a playback device for an optical disc according to a third embodiment of the present invention.
FIG. 7 is a diagram showing an example of a playlist according to the third embodiment of the present invention.
FIG. 8 is a diagram showing a modification of the reproduction system according to the third embodiment of the present invention.
FIG. 9 is a diagram showing another example of a playlist according to the first to third embodiments of the present invention.
FIG. 10 is a diagram showing a reproduction system of a conventional optical disk reproduction apparatus.
FIG. 11 is a diagram showing an example of a playlist used in a conventional playback system.
[Explanation of symbols]
10, 30, 50 Optical disc 11, 31, 51 Playlist 12, 32, 52 Controller 12a, 32a Read control 12b, 32b Decoder control 12c, 32c Volume control 13, 33 Decoder 14, 34 Volume adjustment mechanism 15, 35, 55 Speaker 52a Audio readout control 52b Audio decoder control 52c Audio volume control 52d Video readout control 52e Video decoder control 52f Video fader control 53 Audio decoder 54 Audio volume adjustment mechanism 56 Video decoder 57 Video fader adjustment mechanism 58 Display screen

Claims (17)

A file name of each file to be reproduced from a plurality of files recorded on the optical disc, a playlist in which the silent time set corresponding to the file name is stored,
A controller unit that has a built-in timer function and controls reading of a predetermined file from the optical disc based on the playlist;
A decoder for decoding the data read by the controller unit;
Reproducing means for reproducing the data output from the decoder;
The optical disk reproducing apparatus, wherein the controller unit counts the silence time of the playlist by the timer function after reading the file, and the counted silence time is not output. A file name of each file to be reproduced from a plurality of files recorded on the optical disc, a playlist in which the silent time set corresponding to the file name is stored,
A controller unit that has a built-in timer function and controls reading of a predetermined file from the optical disc based on the playlist;
A decoder for decoding the data read by the controller unit;
Reproducing means for reproducing the data output from the decoder;
The optical disk reproducing apparatus, wherein the controller unit controls the decoder based on the silence time of the playlist, adds the silence time to data output from the decoder, and outputs the data. The playlist further stores a reading start time and an end period of the file in association with the file name,
The optical disk reproducing device according to claim 1 or 2, wherein the controller unit reads data of the end time from the start time of the file based on the playlist. A file name of each file to be reproduced from among a plurality of files recorded on the optical disc, a playlist in which a fade-in time and a fade-out time are stored corresponding to the file name, and
A read control means for controlling reading of a predetermined file from the optical disc based on the file name of the playlist;
A decoder for decoding the data read by the read control means;
Volume adjustment means for adjusting the output volume of the data output from the decoder based on the fade-in time and the fade-out time of the playlist to perform fade-in playback and fade-out playback,
A reproducing apparatus for an optical disc, comprising: reproducing means for reproducing data output from the volume adjusting means. The volume adjusting means performs the fade-in reproduction that gradually increases the output volume based on the fade-in time, and performs the fade-out reproduction that gradually decreases the output volume based on the fade-out time. The optical disk reproducing device according to claim 4. Further storing the read start time and end period of the file in association with the file name in the playlist,
5. The optical disk reproducing apparatus according to claim 4, wherein the read control unit starts a built-in timer function based on the playlist and reads data of the end time from the start time of the file. . The playlist is further stored with silence times between the files,
7. The optical disc according to claim 6, wherein the read control unit counts the silent time of the playlist by the timer function after the file is read, and the counted silent time is in a state in which there is no output. Playback device. Further storing the silence time between the files in the playlist,
5. The decoder control unit according to claim 4, further comprising: a decoder control unit that controls the decoder based on the silence time of the playlist and adds the silence time to data output from the decoder. Optical disk playback device. 9. The optical disk playback device according to claim 1, wherein the file on the optical disk is an audio file or a video file. A playlist in which the file name of each multimedia file to be reproduced from among the plurality of multimedia files recorded on the optical disc, the fade-in time and the fade-out time corresponding to the file name, are stored;
Audio read control means for controlling reading of predetermined audio data from the optical disc based on the file name of the playlist;
An audio decoder for decoding data read by the audio read control means;
Video readout control means for controlling readout of predetermined video data from the optical disc based on the file name of the playlist;
A video decoder for decoding the data read by the video read control means;
Audio volume adjustment means for adjusting the output volume of the audio data based on the fade-in time and the fade-out time of the playlist to perform fade-in playback and fade-out playback;
Video fader adjusting means for adjusting the output fader of the video data based on the fade-in time and the fade-out time of the playlist to perform fade-in playback and fade-out playback;
A speaker for reproducing the audio data output from the audio volume adjusting means;
Display means for reproducing the video data output from the video fader adjusting means;
An optical disc reproducing apparatus comprising: A file name of each multimedia file to be reproduced from among a plurality of multimedia files recorded on the optical disc, a playlist in which silence time and no-screen time are stored corresponding to the file name,
Audio read control means for controlling reading of predetermined audio data from the optical disk based on the file name of the playlist, and for setting the silent time of the playlist to be in an output state after reading the file;
An audio decoder for decoding data read by the audio read control means;
Video readout control means for controlling the readout of predetermined video data from the optical disc based on the file name of the playlist, and setting the no-screen time of the playlist to no output after the file readout;
A video decoder for decoding the data read by the video read control means;
A speaker for playing back audio data output from the audio decoder;
Display means for reproducing the video data output from the video decoder;
An optical disc reproducing apparatus comprising: A playlist for storing a file name of each file to be reproduced from a plurality of files recorded on the optical disc and a silent time set corresponding to the file name, based on the file name of the playlist Reading data of a predetermined file from the optical disc;
Counting the silence time after reading the file based on the silence time of the playlist, and the counted silence time is in a state of no output; and
Decoding the read data;
Reproducing and outputting the decrypted data;
A method for reproducing an optical disc, comprising: A playlist for storing a file name of each file to be reproduced from a plurality of files recorded on the optical disc and a silent time set corresponding to the file name, based on the file name of the playlist Reading data of a predetermined file from the optical disc;
Decoding the read data and adding the silence time to the decoded data based on the silence time of the playlist;
And reproducing and outputting the decoded data to which the silent time has been added, and reproducing the optical disk. Further storing the read start time and end period of the file in association with the file name in the playlist,
14. The method of reproducing an optical disc according to claim 12, wherein the data of the end period is read from the start time of the file based on the read start time and end period of the playlist. A playlist for storing a file name of each file to be reproduced from a plurality of files recorded on the optical disc, and a fade-in time and a fade-out time corresponding to the file name, and the file name of the playlist includes Reading out data of a predetermined file from the optical disc based on;
Decoding the read data;
Adjusting the output volume of the data decoded based on the fade-in time and the fade-out time of the playlist to perform fade-in playback and fade-out playback;
A method for reproducing an optical disc, comprising: The volume adjustment includes performing the fade-in reproduction in which the output volume is gradually increased based on the fade-in time, and performing the fade-out reproduction in which the output volume is gradually decreased based on the fade-out time. Item 16. A method for reproducing an optical disc according to Item 15. Further storing the read start time and end period of the file in association with the file name in the playlist,
16. The method of reproducing an optical disk according to claim 15, wherein the data of the end time is read from the start time of the file based on the read start time and end time of the playlist when the data is read.

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