JP2003196932A - Playback equipment and reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide playback equipment that minimizes soundless time up to a reproduction start. <P>SOLUTION: When a CD-R is set in a CD player 21, a disk structure detecting part 29 reads the TOC (table of contents) of the disk from the CD-R set in the CD player 21, and detects from a memory 28 for disk structures whether a disk structure having the same TOC as the read TOC is stored, and a system controller 30 reads a corresponding disk structure from the memory 28 for disk structures through a memory controller 33, searches the path and address of the first music by referring to the read disk structure and starts reproduction. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reproducing device,
In particular, the present invention relates to a reproducing device that reproduces compressed music using the recording structure of a recording medium.

[0002]

2. Description of the Related Art Recently, in addition to conventional CDs and MDs,
CD to MP3 (MPEG1 Audio Layer)
3) and AAC (Advanced Audio Cod)
The number of users who enjoy digital music by compressing compressed music formats such as ing) using a personal computer or the like and storing them in a hard disk is increasing. And
It is also possible to store those songs in a recording medium such as a CD-R and listen to them with a car audio system or a portable reproducing device. In a reproducing device for reproducing a recording medium on which compressed music is recorded, when the recording medium is set in the reproducing device, a recording structure of the compressed music recorded on the recording medium, for example, a file arrangement of the compressed music is analyzed and analyzed. Playback has started after the end.

[0003]

However, when the number of pieces of compressed music recorded on the recording medium is large or the file arrangement of the compressed music is complicated, the recording structure of the compressed music recorded on the recording medium is changed. It took a long time to analyze, and the silent time before starting the reproduction might be long, which was very uncomfortable. From the above, it is an object of the present invention to provide a reproducing apparatus that minimizes the silent time until the start of reproduction.

[0004]

According to the present invention, there is provided a recording structure analyzing means for analyzing a recording structure of a recording medium on which compressed music is recorded, and recording of the recording medium analyzed by the recording structure analyzing means. A recording medium structure storing means for storing a structure; a judging means for judging whether the recording structure of the recording medium to be reproduced is stored in the recording medium structure storing means; and a reproducing means for reproducing the recording medium structure storing means by the judging means. When it is determined that the recording structure of the recording medium to be recorded is already stored, this is achieved by providing the reproduction control means for reproducing the recording medium using the recording structure.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION (A) Outline of the Invention When a recording medium, for example, a CD-R, is set in a reproducing device, the TOC of the CD-R is read and whether the CD-R has been set before. It is determined whether or not it is set, and if it is not set, the recording structure of the CD-R is analyzed and the analysis result is stored. On the other hand, if it is set, the reproduction is started by using the stored analysis result of the corresponding recording structure.

(B) First Embodiment of the Present Invention (a) Configuration of Reproducing Device of the Present Invention FIG. 1 is a diagram showing the configuration of a reproducing device of the present invention.
Reference numeral 1 is a CD player that reads out music information recorded on a recording medium, for example, a CD-R, and outputs a CD signal, and 22 is a C player.
An amplifier for amplifying the CD signal from the D player 21, 23
Is a volume controller for adjusting the volume of the CD signal amplified by the amplifier 22, 24 is a speaker, 25 is an operating unit for the user to instruct playback and stop and volume adjustment, and 26 is the song currently being played. It is a display unit for displaying the track number, elapsed time, and the like.

27 is a C set in the CD player 21.
The recording structure of the D-R, for example, the disc structure analysis unit for analyzing the address where the path information and the music are recorded, the TOC, the file capacity, the path table, etc., 28 is the recording of the CD-R analyzed by the disc structure analysis unit 27. A structure memory, for example, a disk structure memory that stores path information and addresses at which songs are recorded, TOC, file capacity, path table, etc.,
Reference numeral 29 is a disk structure detection unit for detecting whether or not the recording structure of the CD-R set in the CD player 21 is analyzed by the disk structure analysis unit 27 and stored in the disk structure memory 28, and 30 is an operation unit 25. It is a system controller that performs processing such as control of the CD player 21 in response to an instruction from the.

Reference numeral 31 is a ROM in which a program for controlling the CD player 21 and a program for controlling the volume controller 23 are stored. 32 is a track number and elapsed time of the CD currently being reproduced, and the CD player 21. A RAM 33 for storing information such as a recording structure corresponding to the set CD-R reads the stored data from the ROM 31, writes information to the RAM 32 and controls reading, and writes information in the disk structure memory 28. It is a memory controller that controls reading.

(B) Structure of TOC FIG. 2 is an explanatory diagram of a subcode Q signal recorded on a recording medium, for example, a CD-R, (a) is a data format of the TOC in the lead-in track, (b) Is the data format in the music signal and in the lead-out track. The MNR is a music number (also referred to as a track number), and values of 00 to 99 are possible, but only MNR = 00 in the lead-in track and 01 to 99 in the program area. X is the chapter number used only in the program area,
Values from 00 to 99 are possible within each song number. MIN / SE
C / FRAME indicates the current position from the beginning of the song in minutes / seconds / frames, ZERO indicates that all are "0", and AMIN / ASEC / AFRAME indicates the absolute current position from the beginning of the program area. Absolute time in minutes / seconds / frames. POINT indicates the song number (track number) when the TOC indicates the beginning position (PMIN / PSEC / PFRAME) of the song, PMIN /
PSEC / PFRAME is an absolute position time indicating the start position of the music piece from the start of the program area in minutes / seconds / frames, and corresponds to the table of contents of the disc.

FIG. 3 is a diagram for explaining the TOC of the lead-in track. The beginning position of each song is repeatedly (three times) recorded at the portion of MNR = 00, and 00 minutes 2 seconds 32 is set as the beginning position of the song number 01. The frame is shown. Further POIN
The first track number of the disc by T = A0, POINT = A
1 indicates the last track number of the disc, and POINT = A2 indicates the head position TOUT of the lead-out track (= 52 minutes 48 seconds 41 frames). When recording normal music on a CD-R, the music number is assigned to each music, but when recording compressed music, even if a plurality of music is recorded, one music is recorded as shown in the figure. Will be treated.

(C) Contents Stored in Disk Structure Memory FIG. 4 is an explanatory diagram of contents stored in the disk structure memory 28 (FIG. 1) in the first embodiment of the present invention. For example, in the CD-R, as shown in (a), the first layer of the CD-R is A
AA. mp3, BBB. mp3, CCC. Compressed music named mp3 and folder named ABC, ABC
In the folder called JJ. mp3, KKK. mp3,
LLL. Compressed music named mp3, a folder named EFG, and a folder named EFG. mp
3, FFF. mp3, GGG. When compressed music named mp3 is recorded, as shown in (b), CD-
The name of the compressed music, the path where the compressed music is recorded, and the address where the compressed music is recorded are stored in association with the TOC of R, for example, the start point A2 (FIG. 3) of the lead-out track.

(D) Flowchart of the first embodiment of the present invention FIG. 5 is a flowchart of the first embodiment of the present invention.
First, when the CD-R is set in the CD player 21, the disc structure detection unit 29 (FIG. 1) reads the TOC of the disc, for example, the start point A2 of the lead-out track from the CD-R set in the CD player 21. (Step 101). Next, the disc structure detection unit 29
Detects from the disk structure memory 28 whether or not a disk structure having the same TOC as the read TOC is stored (step 102).

When the disk structure having the same TOC as the TOC read in step 101 is stored, the system controller 30 reads the structure of the corresponding disk from the disk structure memory 28 via the memory controller 33 (step 103). The read disk structure is stored in the RAM 32 via the memory controller 33 (step 104). Next, the system controller 30 refers to the structure of the disk stored in the RAM 32,
Search for the path and address of the first song (step 10
5).

Next, the system controller 30 is a CD
The player 21 determines whether or not the CD-R search is completed (step 106). If the search is not completed, the search is continued. On the other hand, when the search is completed, the reproduction is started from the first searched music (step 1
07).

In step 102, when the disc structure having the same TOC as the TOC read by the disc structure detecting unit 29 cannot be detected from the disc structure memory 28, that is, the disc structure memory 28 is set in the CD player 21. When the disc structure of the CD-R is not stored, the disc structure analysis unit 27 analyzes the disc structure (TOC reading and the name of the compressed music, the path where the compressed music is recorded, and the compressed music is recorded. The address is analyzed) (step 108). Next, the system controller 30 passes through the memory controller 33.
The analyzed disc structure, that is, the TOC information, the name of the compressed music, the path where the compressed music is recorded, and the address where the compressed music is recorded are stored in the disc structure memory 28 (step 109).

(C) Second Embodiment of the Present Invention The configuration of the reproducing apparatus in the second embodiment of the present invention is the same as that of the first embodiment (FIG. 1). (A) Storage Contents of Disk Structure Memory FIG. 6 is an explanatory diagram of the storage contents of the disk structure memory 28 (FIG. 1) in the second embodiment of the present invention. For example, in the CD-R, as shown in (a), the first layer of the CD-R is A
AA. mp3, BBB. mp3, CCC. Compressed music named mp3 and folder named ABC, ABC
In the folder called JJ. mp3, KKK. mp3,
LLL. Compressed music named mp3, a folder named EFG, and a folder named EFG. mp
3, FFF. mp3, GGG. When compressed music named mp3 is recorded, as shown in (b), CD-
The name of the compressed music, the path where the compressed music is recorded, the address where the compressed music is recorded, and the capacity of the compressed music are stored in association with the TOC of R, for example, the start point A2 (FIG. 3) of the lead-out track.

(B) Flowchart of the Second Embodiment of the Present Invention FIG. 7 is a flowchart of the second embodiment of the present invention. The same processes as those in the first embodiment (FIG. 5) are designated by the same reference numerals. is there. When the disk structure having the same TOC as the TOC read in step 101 is stored in step 102, the disk structure detection unit 29 further detects whether the number of files and the file capacity of the disk structure are the same. (Step 201).

If the number of files and the file capacity of the disc structure are the same, the processing from step 103 is performed. If they are not the same, that is, the disc structure of the CD-R set in the CD player 21 is stored in the disc structure memory 28. If not, the disc structure analysis unit 27 analyzes the disc structure (TOC reading and compressed music name, compressed music recorded path, compressed music recorded address, compressed music file number, compressed music file). The music capacity is analyzed) (step 202).

Next, the result of the analysis in step 202, that is, TOC information, the name of the compressed music, the path where the compressed music is recorded, the address where the compressed music is recorded,
The number of compressed music files and the compressed music capacity are stored in the disk structure memory 28 (step 203).

(D) Third Embodiment of the Present Invention The configuration of the reproducing apparatus in the third embodiment of the present invention is the same as that of the first embodiment (FIG. 1). (A) Stored contents of disk structure memory FIG. 8 is an explanatory diagram of stored contents of the disk structure memory 28 (FIG. 1) in the third embodiment of the present invention. For example, in the CD-R, as shown in (a), the first layer of the CD-R is A
AA. mp3, BBB. mp3, CCC. Compressed music named mp3 and folder named ABC, ABC
In the folder called JJ. mp3, KKK. mp3,
LLL. Compressed music named mp3, a folder named EFG, and a folder named EFG. mp
3, FFF. mp3, GGG. When compressed music named mp3 is recorded, as shown in (b), CD-
The name of the compressed music, the path in which the compressed music is recorded, and the compressed music are recorded in association with the capacity (path table capacity) of the information indicating the recording structure as shown in FIG. The address and the capacity of compressed music are stored.

(B) Flowchart of the third embodiment of the present invention FIG. 9 is a flowchart of the third embodiment of the present invention. The same processes as those in the first embodiment (FIG. 5) are designated by the same reference numerals. is there. First, when the CD-R is set in the CD player 21 (FIG. 1), the disc structure detection unit 29 causes the CD player 2 to operate.
The disk path table is detected from the CD-R set to 1 and the capacity of the path table is checked (step 30).
1). Then, the disk structure detection unit 29 determines whether or not a disk structure having the same path table capacity as the detected path table is stored.
More detection (step 302).

In step 302, step 301
If a disk structure having the same path table capacity as the path table detected in step 1 is stored, step 1
If the disc structure of the CD-R set in the CD player 21 is not stored in the disc structure memory 28 by performing the processing after 03,
The disk structure analysis unit 27 analyzes the structure of the disk (TO
The C reading and the name of the compressed music, the path where the compressed music is recorded, the address where the compressed music is recorded, and the capacity of the path table are analyzed) (step 303).

Next, the analysis result in step 302, that is, the name of the compressed music, the path where the compressed music is recorded, the address where the compressed music is recorded, and the capacity of the path table are stored in the disk structure memory 28 ( Step 304).

(E) Fourth Embodiment of the Present Invention The structure of the reproducing apparatus in the fourth embodiment of the present invention is the same as that of the first embodiment (FIG. 1). (A) Storage Content of Disk Structure Memory FIG. 10 is an explanatory diagram of the storage content of the disk structure memory 28 (FIG. 1) in the fourth embodiment of the present invention. CD-R
In the first layer of the CD-R, AAA. mp3, BBB. mp3, CCC. Compressed music named mp3 and a folder named ABC, AB
JJ. mp3, KKK. mp
3, LLL. Compressed music named mp3, a folder named EFG, and a folder named EFG.
mp3, FFF. mp3, GGG. When the compressed music named mp3 is recorded and there is information in which the recording structure shown in (a) called the path table is recorded, as shown in (b), the TOC of the CD-R, For example, the capacity of the path table, the name of the compressed music, the path where the compressed music is recorded, the address where the compressed music is recorded, and the capacity of the compressed music are stored in association with the start point A2 (FIG. 3) of the lead-out track. .

(B) Flowchart of the fourth embodiment of the present invention FIG. 11 is a flowchart of the fourth embodiment of the present invention.
The same processes as those in the first embodiment (FIG. 5) and the second embodiment (FIG. 7) are designated by the same reference numerals. In step 201,
It is detected whether the number of files and the file capacity of the disk structure are the same. If they are the same, if the number of files and the file capacity of the disk structure are the same, the disk structure detection unit 29
(Fig. 1) is a CD-R set in the CD player 21.
Detects the path table of the
It is detected from the disk structure memory 28 whether or not a disk structure having the same path table capacity is stored (step 401).

In step 401, when the capacity of the same path table is satisfied, the processing after step 103 is performed,
If they are not the same, that is, the CD is stored in the disk structure memory 28
When the disc structure of the CD-R set in the player 21 is not stored, the disc structure analysis unit 27 analyzes the disc structure (TOC reading and compressed music name,
The path where the compressed music is recorded, the address where the compressed music is recorded, the number of files of the compressed music, the capacity of the compressed music, and the capacity of the path table are analyzed) (step 40).
2).

Next, the analysis result in step 402, that is, the TOC information, the name of the compressed music, the path where the compressed music is recorded, the address where the compressed music is recorded,
The number of files of the compressed music, the capacity of the compressed music, and the capacity of the path table are stored in the disk structure memory 28 (step 403).

[0028]

As described above, according to the present invention, a recording structure analyzing means for analyzing the recording structure of a recording medium on which compressed music is recorded, and a recording medium for storing the recording structure of the recording medium analyzed by the recording structure analyzing means. Structure storage means, determination means for determining whether the recording structure of the recording medium to be reproduced is stored in the recording medium structure storage means, and recording of the recording medium to be reproduced in the recording medium structure storage means by the determination means When it is determined that the structure has already been stored, the recording control structure is provided to reproduce the recording medium, so that the silent time until the reproduction starts can be minimized.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a playback device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a subcode Q signal.

FIG. 3 is a TOC explanatory diagram of a lead-in track.

FIG. 4 is an explanatory diagram of stored contents of a disk structure memory according to the first embodiment of the present invention.

FIG. 5 is a flowchart of the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of stored contents of a disk structure memory according to the second embodiment of the present invention.

FIG. 7 is a flow chart of a second embodiment of the present invention.

FIG. 8 is an explanatory diagram of stored contents of a disk structure memory according to a third embodiment of the present invention.

FIG. 9 is a flowchart of the third embodiment of the present invention.

FIG. 10 is an explanatory diagram of contents stored in a disk structure memory according to a fourth embodiment of the present invention.

FIG. 11 is a flow chart of a fourth embodiment of the present invention.

[Explanation of symbols]

21 ... CD player ..Memory for disk structure 29 .. Disk structure detector 30 ... System controller 33 ... Memory controller

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5D044 AB05 BC05 CC06 DE15 DE43                       DE54 FG18 GK08 GK12                 5D045 DB01                 5D077 AA29 BA12 BB16 CA02 DC03                       DC08 DC12 DD14 EA08                 5D090 AA01 BB03 CC04 CC14 DD03                       DD05 GG17 GG36

Claims (8)

[Claims] 1. A reproducing apparatus for reproducing a recording medium having compressed music recorded, comprising: a recording structure analyzing means for analyzing a recording structure of the recording medium having compressed music recorded; and a recording medium analyzed by the recording structure analyzing means. A recording structure storage means for storing a recording structure, a judgment means for judging whether the recording structure of a recording medium to be reproduced is stored in the recording structure storage means, and a judgment structure for reproducing the recording structure in the recording structure storage means. If it is determined that the recording structure of the recording medium is stored,
A reproducing apparatus comprising: a reproducing control unit that reproduces a recording medium by using the recording structure. 2. The reproduction according to claim 1, wherein the recording structure analysis unit analyzes the capacity of the compressed music recorded on the recording medium, and the recording structure storage unit stores the analyzed capacity of the compressed music. apparatus 3. The recording structure analysis means analyzes the capacity of the path table of the recording medium, and the recording structure storage means stores the analyzed capacity of the path table of the recording medium. Playback device 4. The recording structure analyzing means analyzes the capacity of the compressed music recorded on the recording medium and the capacity of the path table of the recording medium, and the recording structure storing means analyzes the capacity of the analyzed compressed music and the capacity of the path table. The reproducing apparatus according to claim 1, wherein the reproducing apparatus stores the information. 5. A reproducing method of a recording medium having compressed music recorded therein, wherein a recording structure of a recording medium having compressed music recorded is analyzed, the recording structure of the analyzed recording medium is stored, and the recording structure of the recording medium to be reproduced. Is stored, and when it is determined that the recording structure of the recording medium to be reproduced is already stored, the recording medium is reproduced using the recording structure. 6. The recording medium according to claim 5, wherein in the analysis of the recording structure, the capacity of the compressed music recorded in the recording medium is analyzed and the capacity of the analyzed compressed music is also stored. How to play. 7. The reproduction of the recording medium according to claim 5, wherein in the analysis of the recording structure, the capacity of the path table of the recording medium is analyzed and the analyzed capacity of the path table of the recording medium is stored. Method. 8. The analysis of the recording structure analyzes the capacity of the compressed music recorded on the recording medium and the capacity of the path table of the recording medium, and stores the analyzed capacity of the compressed music and the capacity of the path table. The method for reproducing a recording medium according to claim 5.