JPH08227577A - Disk-shaped recording medium, disk reproducing method and device therefor - Google Patents

Abstract

PURPOSE: To make it possible to record character information which is taken out without using a special decoding method. CONSTITUTION: This disk-shaped recording medium is provided, successively from the innermost peripheral position toward the outermost peripheral position, a first TOC region 1 which is a first management region from time address At to A0 , a first program region 2 from the time address A1 to A2 and a first program end region from the time address A2 to A3 , i.e., a first read out region 3. The recording medium is provided with a second TOC region 4 which is a second management region from the time address A3 to A5 , a second program region 5 from the time address A5 to A6 and a second read out region 6 from the time address A6 to A7 .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc-shaped recording medium having at least one program area and a management information recording area in which the elapsed time for each program and the total absolute time of all programs are recorded. Further, the present invention relates to a disc reproducing method and device for reproducing the disc-shaped recording medium.

[0002]

2. Description of the Related Art In recent years, disc reproducing apparatuses for reproducing optical discs such as disc-shaped recording media for recording music information, so-called compact discs (CDs) have become widespread.

The format for recording data on this optical disc is, as shown in FIG. 9, a TOC which is a program management area from the inner periphery to the outer periphery of the optical disc.
(Table of contents) area 91, program area 9
2. Program end area, so-called lead-out
out) area 93.

In the audio optical disc in which audio information is recorded, audio data is recorded in the program area 92, and the playing time, the number of programs, the total playing time, etc. for each program recorded in the optical disk are recorded in the TOC area 91. Managed.

Further, when the disc reproducing apparatus finishes reading the audio data in the program area 92 and the pickup reaches the lead-out area 93, the disc reproducing apparatus performs the reproducing operation of the audio optical disc. finish.

Here, the above-mentioned disc reproducing apparatus is shown in FIG.
As shown in FIG. 5, the audio data of the audio optical disc 61 is read by the pickup 62, and the reproduced data obtained by processing the audio data by the digital signal processing circuit 66 is used as a digital signal output terminal 75 or an analog signal output terminal. Output from the right and left channels R and L.

According to the disc reproducing apparatus, the pickup 62 is used to read a reproducing signal from the audio optical disc and transmit the reproducing signal to the analog waveform shaping circuit 64.

Further, the focus servo error signal reproduced from the disk reproducing device is transmitted to the focus servo circuit 70, and the tracking servo error signal and the sled servo error signal are transmitted to the tracking 71 and the sled servo circuit 71, respectively.

The analog waveform shaping circuit 64 waveform-shapes the reproduced signal into a binary signal, and the sync detection circuit 65.
And the binarized signal is transmitted to the clock generation circuit 67.

The synchronization detection circuit 65 is a clock generation circuit 6
A frame sync signal is extracted from the binarized signal based on the clock sent from the No. 7 and the frame sync signal and the clock are sent to the digital signal processing circuit 66.

The binarized signal in which the frame synchronization signal is detected is transmitted to the digital signal processing circuit 66, and the digital signal processing circuit 66 causes the reference clock from the crystal oscillator 69 and the clock from the clock generation circuit 67. A reproduction clock is generated from the reproduction signal based on the above, and this reproduction clock is sent to the synchronization detection circuit 65, the digital signal processing circuit 66, and the rotation servo circuit 72.

The digital signal processing circuit 66 is also provided.
Is an audio signal from which the frame sync signal from the sync detection circuit 65 has been detected,
On the basis of the clock from the digital oscillator and the standard clock sent from the crystal oscillator 69, and the decoded digital signal is decoded by the sub-coding detection circuit 68 and D.
It is sent to the / A conversion circuit 73 and the digital signal output terminal 75. The D / A conversion circuit 73 also converts the digital signal into an analog signal and sends it to the audio amplifier 74.

The audio amplifier 74 amplifies the analog audio signal from the D / A conversion circuit 73 and outputs the analog signal output terminal right channel R and terminal left channel L.
Send to

Further, the sub-coding detection circuit 68 is
From the digital signal from the digital signal processing circuit 66,
The P-channel data and the Q-channel data, which will be described later, are detected and the data of each channel are transmitted to the control unit 76.

The control unit 76 controls the tracking and sled servo circuit 71 based on the decoded P-channel and Q-channel data which are sub-code signals.

The focus servo circuit 70 generates a focus operation drive signal based on the focus servo error signal from the pickup 62, sends the focus operation drive signal to the pickup 62, and drives the objective lens up and down.

The rotation servo circuit 72 includes a synchronization detection circuit 65.
A rotation operation drive signal is generated based on the binarized signal from the crystal oscillator 69 and the standard clock from the crystal oscillator 69, and this rotation operation drive signal is sent to the spindle motor 63 to control the rotation operation of the spindle motor 63.

The tracking and sled servo circuit 71 also generates a tracking control drive signal based on the tracking servo error signal from the pickup 62, and the tracking control drive signal is picked up by the pickup 62.
To control the tracking operation of the pickup 62.

Further, a program position control signal is generated in the controller 76 based on the subcode data from the P channel and Q channel, and the program position control signal is sent to the pickup 62.

For example, the program position control operation of the pickup 62 in the programming mode described later is performed based on the program position control signal.

The above programming mode is one of the reproduction modes for reproducing an audio optical disk, and is shown in FIG.
In this mode, the playback order of a plurality of audio data recorded in the program area 92 is changed.

In the above programming mode,
The controller 76 generates a program position control signal based on the P channel and Q channel subcode data sent from the subcoding detection circuit 68, and drives the tracking and sled servo circuit 71 based on the program position control signal. Then, the plurality of programs in the program area are accessed in a predetermined order to control the audio data to be read.

The data of P channel and Q channel will be described below.

The signal recorded on the audio optical disk is sampled by the disk reproducing device at a sampling frequency of 44.1 kHz. The sampled data is collected in one frame every 6 samples.

As shown in FIG. 11, the format of the signal collected in one frame is as shown in FIG.
A 24-bit synchronization pattern data area 81, a 14-bit sub-coding area 82, a program data area 83 consisting of 16 pieces of 14-bit program data D0 to D15, and 4 pieces of 14-bit parity data P0. To P3 parity data area 84
And another program data area 83 and a parity data area 84.

Further, in order to combine each area or data part, 3-bit combining data is provided for each part. Therefore, each frame 85 has a total of 588 bits of data.

Further, FIG. 12 shows a case where 98 frames 85 are collected and the areas and data portions of each frame 85 are combined and rearranged.

Each block 89 comprises a frame synchronization pattern section 86, a sub-coding section 87, and a data / parity section 88.

Here, the sub-coding data including the P-channel and Q-channel data sent from the sub-coding detection circuit 68 of FIG. 10 is recorded in the sub-coding unit 87 of FIG.

As shown in FIG. 13, the sub-coding unit 87 has a structure in which one frame or a sub-coding frame is formed by 98 frames from the frame 01 to the frame 98.

The frame 01 and the frame 02 are the synchronization patterns of the blocks and the 8-14 modulation method (eigh
The out-of-rule patterns S0 and S1 of t to fourteen modulation (EFM) are shown.

The sub-coding detection circuit 68 of FIG. 10 detects the above synchronization pattern and uses it as a sub-coding unit 87 for one block. Furthermore, frame 0
Each bit from 1 to frame 98 constitutes a P channel to a W channel.

For example, the P channel is composed of a part of each of S0 and S1 and P01 to P96.

Further, conventionally, the data for 6 channels from the R channel to the W channel in FIG.
For example, it is used for special purposes such as displaying still images and lyrics of so-called Karaoke.

The P channel and Q channel data are used for the program position control operation of the pickup, that is, the access operation control.

Here, the P channel is the b channel in FIG.
As shown in, the TOC area 91 has a signal of "0", the program area 92 has a signal of "1" between audios, and the others have a signal of "0", and the lead-out area 93 has a predetermined cycle. It is used only for recording the signals of repeating "0" and "1".

The P channel information is used as information for finding the beginning of the music.

Information on the Q channel is shown in FIG.
The pickup 62 is used as address information when performing the access operation, and the structure of one block of the Q channel, that is, one subcoding frame, is as shown in FIG.
, Control bit block 112, address bit block 113, data bit block 114, CRC
(Cyclic redunndancy code) bit block 115.

The sync bit block 111 is a part having 2-bit data, and a part of the above-mentioned sync pattern is recorded therein.

The control bit block 112 is a portion having 4-bit data, in which data for identifying the number of audio channels, emphasis, digital data, etc. is recorded.

Here, the control bit data of 4 bits in the control bit block 112, that is, the control bit data will be described.

FIG. 16 shows the 4-bit control bit data.

Control bit data 121 refers to 2-channel audio without pre-emphasis, control bit data 122 refers to 4-channel audio without pre-emphasis, control bit data 123 refers to 2-channel audio with pre-emphasis, and control. Bit data 124
Indicates 4-channel audio with pre-emphasis.

Further, the control bit data 125
Indicates a non-audio data program such as a data optical disc, a so-called CD-ROM.

The address bit block 113 has 4
The data bit 11 is a part having bit data.
A control signal indicating the format of the data in 4 is recorded.

The data bit 114 is a portion having 72-bit data as shown in FIG.

For example, the address bit is "0001".
, The structure of the data bit 114 is as shown in FIG.
As shown in, the program number section 51, the index section 52, the elapsed time minute component section 53, the elapsed time second component section 54, the elapsed time frame number section 55, the 0 section 56,
It comprises an absolute time minute component part 57, an absolute time second component part 58, and an absolute time frame number part 59.

Each part has 8-bit data. Note that, here, one frame having a frame number recorded in the elapsed time frame number portion 55 and the absolute time frame number portion 59 indicates the sub-coding frame.

In FIG. 17, the program number portion 51 is represented by two digits expressed in a binary coded decimal (BCD) system. For example, "00" is the beginning of data reading, the so-called lead-in area. That is, the TOC area is shown. Further, “01” to “99” represent program numbers, and AA is a data read end position (outermost track), so-called lead-out (lead o).
ut) represents a program.

For example, FIG. 14c shows an example of the Q channel of an optical disc on which four songs are recorded.

As shown in FIG. 14c, in the program number portion 51, "00" data is recorded in correspondence with the TOC area, "01" is recorded in correspondence with the program number P1, and thereafter the music number is recorded. The number corresponding to is recorded, and "AA" is recorded in the outermost track, so-called lead out.
Is recorded.

The index portion 52 of FIG. 17 is represented by a 2-digit BCD. For example, "00" represents a temporary stop, a so-called pause. From "01" to "99", one program is divided into a plurality of subprograms. It is further subdivided.

As shown in FIG. 14d, the program number P2 is divided into three equal parts, and the index portion X has "01-
03 ”is recorded, the program number P3 is divided into two equal parts, and“ 01-02 ”is recorded in the index part X.

Further, as shown in FIG. 17, the elapsed time minute component portion 53, the elapsed time second component portion 54 and the elapsed time frame number portion 55 are each 2 digits, and the elapsed time in the program is 6 digits in total. It represents.

The elapsed time frame number portion 55 is represented by "00" to "74".

Further, the elapsed time frame number is subtracted in the P channel portion between the programs, so that the zero start is performed at the first position of each program. The 0 portion 56 is a portion formed by inserting "0".

The absolute time minute component portion 57, the absolute time second component portion 58 and the absolute time frame number portion 59 shown in FIG.
It is represented by BCD of 2 digits each, and BCD of 6 digits in total.
In the TOC area 91, the absolute time component part 57 represents the first program number when the index part 52 is A0, and the absolute time component part 57 represents the last program number when the index part 52 is A1.

The index section 52 has A0, A
In any case of 1, the absolute time second component part 58 and the absolute time frame number part 59 are set to "0". When the index part 52 is A2, the absolute time minute component part 57, the absolute time second component part 58, and the absolute time frame number part 59 record the absolute time when the lead-out area 93 of FIG. 9 starts.

Also, the absolute time minute component part 57, the absolute time second component part 58 and the absolute time frame number part 5
In the program area 92 of FIG. 9, 9 is recorded as an absolute time, which is the time that is added each time 0 comes from the position where the pause of the first program starts.

The CRC bit 115 is a portion having 16-bit data as shown in FIG.

This CRC bit 115 is a cyclic code (cy
The data for error detection of clic redundancy code) is recorded.

In the programming mode, the information using the Q-channel data as described above is detected by the sub-coding detection circuit 68 of the disc reproducing apparatus as shown in FIG. Based on the decoded signal, the controller 76 controls the tracking and sled servo circuit 71 to access the pickup 62.

[0063]

By the way, the above-mentioned Q
Since the number of programs and time information relating to the programs are recorded in the information using the channel data, this information is displayed on a display device such as an LCD (liquid crystal display) so that the program being played is recorded on the audio optical disc. You can visually check the number of songs, the elapsed time of the performance, the absolute time from the beginning, etc.

Further, in recent years, so-called disc exchange type disc reproducing devices for accommodating a plurality of audio optical discs and reproducing an arbitrary audio optical disc have become widespread.

In the disc exchange type disc reproducing apparatus, it is very significant to identify the audio optical disc being reproduced.

However, since the above-mentioned information does not include character information such as title information peculiar to the disc and title information peculiar to the program, the title of the optical disc for audio being reproduced, the title of the song being played, etc. are displayed above. It could not be displayed on the device.

Further, conventionally, recording the program name on the audio optical disc is performed by recording each program name from the R channel to the W channel of the subcode information or by using a part of the main signal. ,
This was possible by recording as so-called CD-ROM data.

Entering each program name is a cumbersome task.

In the case of a disc reproducing apparatus for reproducing an optical disc for audio, the data recorded by using the so-called CD-ROM format must be subjected to a decoding process peculiar to the CD-ROM format, and a unique integrated circuit is used. It could not be taken out without the decryption process.

Therefore, the disc reproducing apparatus for reproducing these audio optical discs becomes expensive.

Further, since the required character information is only about 2 Kbytes, it is wasteful.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and is a disk-shaped recording medium capable of recording character information that can be taken out without using a special decoding means, and this disk-shaped recording. An object of the present invention is to provide a disc reproducing method and device for reproducing a medium.

[0073]

In order to solve the above-mentioned problems, the present invention provides a program area in which at least one program is recorded, and a program area for each program recorded in the program area. In a disk-shaped recording medium having a first management area in which first management information including time information and all time information of all programs is recorded, an area different from the first management area And a second management area in which second management information including program attribute information indicating attributes relating to the program is recorded.

Further, according to the present invention, a first management area, a program area in which a program managed by the first management area is recorded, and a program attribute indicating attributes relating to the program recorded in the program area. A second management area in which second management information including information is recorded is provided from the inner circumference to the outer circumference of the disc, and the program recorded in the program area is recorded in the first management area. First management information including time information for each, all time information of all programs, and time information for indicating the second management area is recorded.

Further, in the present invention, in each of the above disk-shaped recording media, the data of the program is audio data recorded for each program, and
Program attribute information managed in the second management area, name information of the disc-shaped recording medium, performer information of the program, name information for each program,
The information is at least one of the type information of the program, a code number for identifying the disc-shaped recording medium, and message information about the program.

Further, in the present invention, in each of the above disc-shaped recording media, the data of the program is audio data recorded for each program, and
The program attribute information managed in the second management area is at least one of the minimum level, the maximum level, the average level, and the most frequent level of the program.

Further, according to the present invention, a first management area, a program area in which a program managed by the first management area is recorded, and a program attribute indicating an attribute relating to the program recorded in the program area. It has a second management area in which second management information including information is recorded. In the first management area, time information for each program recorded in the program area and all of all programs are recorded. A disk reproducing method for reproducing information from a disk-shaped recording medium in which first management information including time information and time information for indicating the second management area is recorded, the method comprising: A first management information reading step for accessing and reading the first management information recorded in the first management area; and a first management information reading step for reading the first management information reading step. Based on the time information for indicating the second management area in the management information, the detection step of detecting the start position of the second management area, and based on the detection result obtained in the detection step A second management information reading step of reading the second management information by accessing the start position of the second management area.

Further, the present invention is the above-mentioned disc reproducing method, further comprising: a program reading step of accessing the program area of the disc-shaped recording medium to read the program; and a reproducing of the program read in the program reading step. A display step is provided for displaying these information based on the first management information read in the first management information reading step and the second management information read in the second management information reading step. Is.

Further, the present invention is the above-mentioned disc reproducing method, wherein the program data is audio data recorded for each program and the second management information is read in the second management information reading step. The information includes name information of the disc-shaped recording medium, performer information of the program, name information of each program, type information of the program, a code number for identifying the disc-shaped recording medium, and the program. This is information including at least one program attribute information among the message information regarding.

Further, the present invention provides each of the above-mentioned disc reproducing methods, wherein the data of the program is audio data recorded for each program and the second management information read in the second management information reading step. Is information including at least one program attribute information among the minimum level, the maximum level, the average level, and the most frequent level of the program.

Further, according to the present invention, in each of the above-mentioned disc reproducing methods, the first management area, the program area, and the second management area are arranged in this order from the inner circumference to the outer circumference of the disk. This is for reproducing a disc-shaped recording medium that is used.

Further, the present invention provides a first management area, a program area in which program data of a program managed by the first management area is recorded, and an attribute relating to the program recorded in the program area. And a second management area in which second management information including program attribute information is recorded. The first management area includes time information for each program recorded in the program area, and A disk reproducing apparatus for reproducing information from a disk-shaped recording medium in which first management information including all time information of a program and time information for indicating the second management area is recorded, Access the management area to access the first management information recorded in the first management area and the start position of the second management area, and access the second management information. The second management based on the reading means for reading and the time information for indicating the second management area in the first management information recorded as the first management information read by the reading means. And a control means for detecting the start position of the area and controlling the reading operation of the second management information by the reading means based on the detection result.

Further, the present invention provides a disc reproducing apparatus comprising the reading means and the control means,
Further, in the control means, the reading means accesses the program area to read the program, the first management information managed in the first management area when the program is reproduced, and the second management information. The operation for displaying the information is controlled based on the second management information managed in the management area.

Further, according to the present invention, in each of the above-mentioned disc reproducing apparatuses, further, the data of the program is audio data recorded for each program, and second management information managed in the second management area. The name information of the disc-shaped recording medium, the player information of the program, the name information of each program, the type information of the program, the code number for identifying the disc-shaped recording medium, and the program. The information includes at least one program attribute information among the message information.

Further, according to the present invention, in each of the above-mentioned disc reproducing apparatuses, further, the data of the program is audio data recorded for each program, and second management information managed in the second management area. Is information including at least one program attribute information among the minimum level, the maximum level, the average level, and the most frequent level of the program.

Further, according to the present invention, in each of the above-mentioned disc reproducing apparatuses, a disc in which the first management area, the program area, and the second management area are arranged in this order from the inner circumference to the outer circumference of the disk. The recording medium is reproduced.

According to the disk-shaped recording medium having the program area, the first management area and the second management area according to the present invention, the program area is recorded in the second management area. The second management information including the program attribute information indicating the attribute relating to the program to be recorded is recorded in a signal format that can be read by the conventional disc reproducing apparatus.

According to the disc-shaped recording medium of the present invention, which has the first management area, the program area, and the second management area from the inner circumference to the outer circumference of the disk,
In the second management area, second management information including program attribute information indicating an attribute of a program recorded in the program area is recorded in a signal format that can be read by a conventional disc reproducing apparatus.

Further, in each of the disc-shaped recording media described above, the second management information managed in the second management area is
Name information of the disc-shaped recording medium, player information of the program, name information of each program, type information of the program, code number for identifying the disc-shaped recording medium, and message information about the program. When at least one of the information from and, for example, the title of the disc-shaped recording medium, the name of the performer,
At least one of a performance song, a type of performance song, a so-called genre, a code number for searching the disc-shaped recording medium, and a message regarding the performer, the performance song, etc. is used as the second management information. It can be recorded in a signal format that can be read by a disc reproducing device.

Further, in each of the disc-shaped recording media described above, the second management information managed in the second management area is
When at least one of the minimum level, the maximum level, the average level, and the most frequent level of the above program is used as information, the playing level of the musical piece to be played, for example, the maximum level, the minimum level, the average level, and the most frequent level At least one of the information can be recorded as the second management information in a signal format that can be read by a conventional disc reproducing apparatus.

According to the disc reproducing method having the first management information reading step, the detecting step, and the second management information reading step of the present invention, the disc-shaped recording reproduced in the first management information reading step is performed. First management information managed in the first management area of the medium, for example, time information for indicating the second management area is read. Further, in the detection step, a predetermined calculation is performed from the position recorded as the time information for indicating the second management area, and the start position of the second management area is detected. Further, in the second management information reading step, the second management information recorded in the second management area, that is, the program attribute information indicating the attribute regarding the program recorded in the program area is read. Further, reading the second management information recorded in the second management area does not require a special decoding process.

In the disc reproducing method, when a program reading step and a displaying step are further provided, the program reading step relates to the first management information managed in the first management area, that is, the program. The program area is accessed based on the time information and the program is read. In the displaying step, the second management information managed in the second management area is displayed when the program is reproduced. Further, the reading of the second management information does not require a special decoding process.

Further, in each of the above-mentioned disc reproducing methods, the second management information read in the program reading step further includes name information of the disc-shaped recording medium, performer information of the program, and each program. Name information, type information of the program, a code number for identifying the disc-shaped recording medium, and at least one information from the message information about the program, in the second management information reading step,
The second management information, for example, the title of the disc-shaped recording medium, the name of the performer, the musical piece to be played, the type of musical piece, so-called genre, the code number for searching the disc-shaped recording medium, the performer or the performance. At least one program attribute information is read out from the message regarding the tune or the like. Further, in the displaying step, the second management information is displayed when the program is reproduced. Further, the reading of the second management information does not require a special decoding process.

Further, in each of the above-mentioned disc reproducing methods, the second management information read in the second management information reading step further includes the minimum level, the maximum level, the average level, and the most frequent level of the program. In the second management information reading step, the reproduction level of the music piece, for example, the maximum level, the minimum level,
At least one program attribute information of the information about the average level and the most frequent level is read. Further, the reading of the second management information does not require a special decoding process.

Further, according to the disc reproducing apparatus having the reading means and the control means of the present invention, the reading means accesses the first management area of the disk-shaped recording medium to access the first management area. The recorded first management information, for example, the time information for indicating the second management area is read out, and the control means performs the above-mentioned second operation based on the time information for indicating the second management area. The start position of the second management area is detected. Furthermore, based on this detection result,
The reading means accesses the start position of the second management area and reads the program attribute information, that is, the second management information indicating the attribute relating to the program recorded in the program area, that is, the program attribute information. Therefore, a second reading unit for reading the second management information or a decoding unit for performing a decoding process for extracting the second management information from the data obtained from the normal RF signal is specially provided. Instead, the second management information can be read.

Further, in the above-mentioned disc reproducing apparatus, further, in the control means, the reading means accesses the program area to read the program, and when the program is reproduced, management is performed in the first management area. When the operation for displaying these information is controlled based on the first management information and the second management information managed in the second management area, the second management information is read out. Second reading means or normal R
The second management information can be read and the second management information can be displayed without specially providing a decoding means for decoding the data obtained from the F signal to retrieve the second management information. .

Further, in each of the above-mentioned disc reproducing apparatuses, the second management information managed in the second management area may further include name information of the disc-shaped recording medium, performer information of the program, and When at least one program attribute information among the name information for each program, the type information of the program, the code number for identifying the disc-shaped recording medium, and the message information about the program, the control means , The second management information, for example, the title of the disc-shaped recording medium, the name of the performer, the musical piece, the type of musical piece, so-called genre,
A code number for searching the disc-shaped recording medium,
Control is performed to read out at least one program attribute information in the message relating to the performer, the performance tune, and the like. Also, control is performed to display the second management information when the program is reproduced. With this,
The second reading means for reading the second management information, or the decoding means for decoding the data obtained from the normal RF signal to extract the second management information without specially providing the second management information, The second management information can be read and the second management information can be displayed.

Further, in each of the above-mentioned disc reproducing apparatuses, the second management information managed in the second management area is further provided with a minimum level, a maximum level, an average level and a most frequent level of the program. In the case of using at least one of the program attribute information, the control means controls the second management information, for example, the reproduction level of the musical piece to be played, such as the maximum level, the minimum level, the average level, and the most frequent level. Control is performed to read at least one program attribute information. Therefore, a second reading unit for reading the second management information or a decoding unit for performing a decoding process for extracting the second management information from the data obtained from the normal RF signal is specially provided. Instead, the second management information can be read and the second management information can be displayed.

[0099]

BEST MODE FOR CARRYING OUT THE INVENTION The disc-shaped recording medium of the present invention applied to an optical disc on which audio data is recorded will be described below in detail with reference to the drawings.

As shown in FIG. 1, the optical disc 100 has a center hole 101 in the center, and as shown in FIGS. 1 and 2, the optical disc 100 is arranged in order from the innermost position to the outermost position. , the 1TOC a first management area of from time address a _t to a ₀ (table of contents) area 1,
First program area 2 from time address A ₁ to A _2, first program end area from time address A ₂ to A ₃ , so-called first lead-out area 3, time address A ₃ to A _5. The second TOC area 4, which is the second management area of the second program area 5, the second program area 5 including time addresses A ₅ to A _6, and the time addresses A ₆ to A _7.
Has a second lead-out area 6 up to. In FIG. 2, the time address A ₀ is the origin.

The first TOC area 1 is the first management information of the audio data recorded in the first program area 2,
For example, performance time for each audio data, absolute time from the position of the first audio data, and time information for indicating the second TOC area 4 are recorded.

Further, the first program area 2 has a plurality of audio data and is provided up to the position where the first lead-out area 3 appears.

The second TOC area 4 is information regarding attributes relating to a plurality of audio data in the first program area 2 which is second management information, for example, the name / identification code of the optical disc 100, that is, title information / code number information. , Title information of each program, performer name information of each program, genre information of each program, and message information about the title and the audio data.

The second TOC area 4 also manages the program attribute information of the highest level, the lowest level, the average level and the most frequent level of the sound pressure of the audio data as other second management information.

Therefore, the second management information is the second TOC.
It is managed by the Q channel in area 4. The structure of one block of Q channel data is shown in FIG. 15 and as described above, the sync bit block 11
1, a control bit block 112, an address bit block 113, a data bit block 114, and a CR
And a C-bit block 115.

Further, similar to the above, the block is also referred to as a sub-coding frame.

Further, the address bit block 11
The configuration of the data bit block 114 in the case where the address bit data of 3 is "1", that is, "0001" when expressed by a binary numeral is shown in FIG. 17 and as described above,
Program number part 51, index part 52, elapsed time minute component part 53, elapsed time second component part 54, elapsed time frame number part 55, 0 part 56, absolute time minute component part 57, absolute time It comprises a second component part 58 and an absolute time frame number part 59. The first TOC area 1, the first program area 2 and the first lead-out area 3 of FIG.
Is recorded in this format.

Here, the elapsed time frame number portion 5
5 and one frame having a frame number recorded in the absolute time frame number section 59 indicate the sub-coding frame. Further, one second is divided into 75 sub-coding frames.

FIG. 3 shows an example of Q channel data in the first TOC area 1 for each frame. In FIG. 3, only the index number IX is represented by a hexadecimal number, and all other numerical values are represented by a decimal number.

Address bit data is "1" or 2
When the decimal number is “0001” and the content of the index number IX is “A0”, as described above, the first song number,
Alternatively, it indicates that the program number is written in the absolute time component PMIN, and the index number IX is "A.
When it is 1 ", it means that the last program number is written in the absolute time component PMIN. When the index number IX is" A2 ", the absolute time when the first lead-out area starts, That is, the time indicating the time address A ₂ in FIG. 2 is written.

Therefore, the audio optical disc having the contents of TOC of FIG. 3 contains the program tunes from the first tune to the seventh tune, and the performance ends at 31 minutes, 6 seconds and 50 frames from the time address A _0. I understand.

That is, this position corresponds to the time address A ₂ in FIG.

Index numbers IX from "01" to "07" correspond to the first to seventh songs, and the absolute time of each program is PMIN, PSE.
C, recorded in PFRM.

The above absolute time describes how many minutes and seconds after the time address A ₀ each program starts.

Further, the index number IX is "07".
A frame whose address bit data is “5” or binary “0101” data is provided below the frame.

The address bit data of this frame is
This is data for determining whether or not the second TOC area 4 and the second lead-out area 6 in FIG. 2 are used.

When data is recorded in the second TOC area 4, a frame whose index number IX is "B0" is provided.

In FIG. 3, the time address A ₀
The start point of the second TOC area 4 is provided in the vicinity of the position (A ₄ ) 33 minutes 36 seconds 50 frames after.

Explaining in detail below, the location traced back one minute from the above A ₄ is the starting point (A ₃ ) of the second TOC area 4.

The starting point (A ₃ ) of the second TOC area 4 can also be calculated from the starting address A ₂ of the first TOC.

1 at the start address A ₂ of the first TOC
The place where the fixed value of 30 minutes is added is the starting point A ₃ of the second TOC area 4.

The conventional audio optical disc is
Although the absolute time of the first TOC area has not been set, in the disc-shaped recording medium according to the present invention, the frame whose index number IX is "C0" indicates the start position of the first TOC area 1 in FIG. Absolute time.

[0123] That is, the time address A _t, so that the value of 97 minutes 22 seconds 74 frames is recorded.

The position where the first TOC area 1 ends,
That is, the time address A _{0 in} FIG. 2 is 99 minutes 59 seconds 74.
It is provided at the position of the frame, and this time address A
₀ indicates an absolute time 0 minutes 0 seconds 0 frame.

[0125] Here, the time address A ₀ and A _t of the normal maximum playing time of compact discs is 74 minutes present invention, but the time over 74 minutes is recorded, there is no actual time The reason for recording is to distinguish from a normal compact disc.

[0126] Furthermore, the time from the address A _t to time address A _0, i.e. the interval from 97 minutes 22 seconds 74 frames position to the position of 99 minutes 59 seconds 74 frames provided on the inner peripheral side than the time address A ₀ Has been.

Here, in the first TOC area 1, the second TO
When it is shown that the data is recorded in the C area 4, the audio optical disc has a portion in which the address bit data is "6" or the binary number "0110". This portion is a portion showing the data recorded in the second TOC area 4.

Here, when the data recorded in the second TOC area 4 is arranged for each frame, as shown in FIG.
As the control bit data of the control bit block 112 shown in FIG. 15 in the OC area 4, "4", that is, "0100" in binary number is used.

Further, in the frame in which "1" or binary number "0001" is used as the address bit data, it is confirmed that the time information regarding the second program area 5 and the second lead-out area 6 is recorded. "6" or 2 as the above address bit data
The frame using the decimal number "0110" indicates that the program attribute information of the program in the first program area is recorded.

According to the four frames whose address bit code is "1", the index number IX is "A0".
And the absolute time component PMIN of the frame having the index number IX of “A1” are both “8”, the number of programs recorded in the second program area 5 is the first program as described above. There is only one of the 8th program through the program area 2.

Also, the absolute time component PMIN, the absolute time second component PSEC and the absolute time frame number PFRM of the frame whose index number IX is "A2" are "6".
4, 13, 02 ", so the second lead-out area 6
It can be seen that starts from the position where 64 minutes 13 seconds 2 frames have passed from the time address A ₀ . This position corresponds to the time address A ₆ in FIG.

Absolute time minute component PMIN and absolute time second component PS of the frame whose index number IX is "08"
EC and absolute time frame number PFRM are “33, 3
8 and 50 ″, the second program area 5 is
It can be seen that it starts from the position where 33 minutes 38 seconds 50 frames have passed from the time address A _{0 of} . This position corresponds to the time address A ₅ in FIG. The above-mentioned frame is the above-mentioned sub-coding frame, and one in 75 frames.
It is the time in seconds.

Therefore, as shown in FIG. 2, the present optical disc for audio uses the time address A ₀ as the origin, and the time address A ₁ exists at a position where 2 seconds and 0 frames have elapsed,
The time address A ₂ exists at a position after 31 minutes, 6 seconds and 50 frames have passed, the time address A ₄ exists at a position after 33 minutes, 36 seconds and 50 frames has passed, and the time address A ₅ exists at a position where 33 minutes, 38 seconds and 50 frames have passed. , The time address A ₆ exists at the position where 64 minutes 13 seconds 2 frames have passed, the time address A ₇ exists at the position where 65 minutes 43 seconds 2 frames have passed, and is located on the inner circumference side of the time address A _0. A section from 97 minutes 22.74 frames to 99 minutes 59.74 frames is provided, and the position of this 97 minutes 22.74 frames is set as a time address _t . From this position, 99 minutes 59.74 frames, that is, time address A ₀ Is an optical disc in which the above are assigned as the first TOC area 1.

It should be noted that the second lead-out area 6 is set to 30
Since the seconds are provided, the time address A ₇ points to the position of 65 minutes 43 seconds 2 frames as described above.

When the address bit data is "6", the Q channel data bit block 114 of FIG. 15 has the program number portion 11 as shown in FIG.
And an attribute part 12 and seven character data parts 13. 8-bit data is recorded in each part.

Here, the program number section 11 is a character string of one program attribute information from which frame to which frame with respect to the character string shown in the character data section 13 of each frame in which the program attribute information is recorded. Is shown.

The most significant bit (MSB) of the program number section 11 indicates that this frame is the last character string frame of the program attribute information. For the remaining 7 bits, "1" to "99" represent the numerical value corresponding to each program number of the first TOC area 1, and "0" and "100".
To "126" represent the classification of the later-described character string attributes. However, when the MSB becomes "1", "12"
It takes the value of the program number TR to which 8 "is added.

For example, in FIG. 4, in the frame having the program number “01”, the character string formed by the plurality of character data portions 13 is the name of the first program in the first program area 2. The program number of the last frame of this character string is represented by "129".
However, when the character string is data for seven characters or less in the character data portion 13, this character string is data represented only by the frame whose program number is the MSB.

For example, in FIG. 4, since the frame whose program number is "131" has character data of 7 characters or less, the program number of the frame having this data is "131" instead of "03". ing.

In addition, the program numbers "0" and "10"
As shown in FIG. 6, "0" to "126" defines the classification of the above-mentioned character string attribute for each program number.

When the program number is "100", the character string of this frame represents the disc name, that is, the disc title. For example, as shown in FIG.
It is displayed as "DISC Title".

When displaying the above "DISCtitle", a recording area of 9 characters is required, and as described above, only 7 characters can be recorded in one frame.
As shown in, the frame in which the remaining two characters “le” is recorded is the frame with the program number “228”.

The reason why the program number is "228" is that "DISCtit" has a program number of "1".
If it is recorded in "00" and there is a frame to be linked, 1 is set in the 8th bit, that is, (100 + 2 ⁸ )
= 228, the program number of the frame to be linked next becomes "228".

In the frame with the program number "101", the disc identification number is shown as shown in FIG.

For example, as shown in FIG. 4, when a character string such as "DISCNo1234567" is recorded as the disc identification number, a recording area of 13 characters is required.

However, as described above, since only 7 characters can be recorded in one frame, the remaining 6 characters are recorded in the frame whose program number is "229".

Further, in the frame frame whose program number is "102", a character string for displaying the genre of audio recorded on this disc as "JAZZ" is recorded.

Since this character string is data for seven characters or less, the program number of the frame having this character string is "230" instead of "102".

That is, when the character data length is 7 characters or less, only one frame is required for recording and there is no frame to be linked. Therefore, in FIG. 4, “230” is used as the program number instead of “102”. Has been.

In the attribute part 12 of FIG. 5, the first 4 bits are data representing a character code, and the latter 4 bits are data representing a character serial number.

That is, the index number IX in FIG.
In the (attribute number), the first hexadecimal number is data representing a character code, and the next hexadecimal number is data representing a character serial number.

Here, the data representing the above character code is
The data recorded in the character data portion 13 of the frame having this data is, for example, JIS (Japanese Industrial
Standard) code or ASCII (Am
erican National Standard code for Information Inte
rnational Interchange) Indicates whether it is a code or the like.

By the data representing this character code, 1
Six types of character codes can be specified.

The data representing the character serial number indicates, in the case where the character string extends over a plurality of frames, the number of the frame in the data indicated by the program number.

By the data representing this character sequence number, a maximum of 16 frames per character string, that is, 11
Up to 2 characters can be shown.

For example, in FIG. 4, there are two frames whose program number is "100", and the data of the attribute portion 12 of the first frame is "00".

Since the frame having the program number "228" having the last character string of this character string is the second frame, the data of the attribute part 12 is "0".
It is 1 ".

Further, the character data section 13 of FIG. 5 has data indicating the character per character data section 13 with the character code designated by the data representing the character code of the attribute section 12.

In FIG. 4, each character is shown by an alphabet or a number in order to make the explanation easy to understand. Each frame has seven character data parts 13.

In the first TOC area, as in the conventional audio optical disk, each data is triple-written, and the triple-written data is repeatedly recorded.

Data written once for each data is repeatedly recorded in the second TOC area.

As shown in FIG. 7, the disc reproducing method for reproducing the disc-shaped recording medium according to the present invention, as shown in FIG. 7, is the first TOC area which is the first management area of the audio optical disc shown in FIGS. 1 to access this 1st TO
Steps S1 and S2, which are the first management information reading step of reading the first management information recorded in the C area 1, and the second management information from the first management information read in the first management information reading step. Second TO, which is the management area
Based on the time information for indicating the C area 4, the second T
Step S7, which is a detection step of detecting the start position of the OC area 4, and program attribute information indicating the attribute relating to the program by accessing the start position of the second TOC area 4 based on the detection result obtained in the detection step. And a step S8 which is a second management information reading step of reading the second management information including.

In the disk reproducing method, steps S10 and S11 which are program reading steps for accessing the first program area 2 in FIG. 2 of the audio optical disk and reading a program, and the program reading step are executed. When the program is reproduced, the information is displayed based on the first management information read in the first management information reading step and the second management information read in the second management information reading step. The display process includes step S12.

According to FIG. 7, the operation is started, and in step S1, the reading means for reading the signal on the disc such as the pickup accesses the first TOC area 1 in FIG. 2 and proceeds to step S2.

In step S2, the first TOC
The area 1 is reproduced, the process proceeds to step S3, and after the reproduced contents are taken into the first storage means, the process proceeds to step S4.

At step S4, the first TOC area 1
17, it is determined whether or not there is a frame in which the data "B0" is written in the index part 52 of FIG.

If the determination result is NO, that is, if it is determined that there is no frame in which the data "B0" is written in the index section 52, the process proceeds to step S5, and the normal audio optical disc is reproduced. .

If the determination result is YES, that is, if it is determined that there is a frame in which the data "B0" is recorded in the index portion 52, the process proceeds to step S6.

In step S6, the index unit 5
The reading means accesses the time address indicated by the data of the elapsed time minute component MIN, the elapsed time second component SEC, and the elapsed time frame number FRM of the frame in which the data "B0" is written in 2, and proceeds to step S7. .

Note that this time address corresponds to the time address A ₄ in FIG. 2, and in this embodiment, it is a time address 1 minute after the time address A ₃ .

At step S7, the time address A of FIG.
By subtracting a predetermined time, in the case of this embodiment, 1 minute from ₄ , the time address A ₃ , that is, the second TO
The start position of the C area 4 is detected, and the process proceeds to step S8.

In step S8, the reading means accesses the start position of the second TOC area 4 to reproduce the second TOC area 4, and the process proceeds to step S9. In step S9, the content of the second TOC area 4 is changed to the first content.
It is taken into the second storage means different from the storage means, and the process proceeds to step S10.

In step S10, the first program which is the first program recorded in the first program area 2 in FIG.
The reading means accesses the start position of the first program, which is the above program, and in this state the command input standby state is entered, and the process proceeds to step S11.

In step S11, the reproduction mode is input and the reproduction of the program in the first program area 2 is started, and the flow advances to step S12.

In step S12, the second management information including the program attribute information corresponding to the program being reproduced, that is, the second management information stored in the second storage means.
The contents of the TOC area 4 are displayed on the display means.

FIG. 8 shows a disc reproducing apparatus to which the above-mentioned disc reproducing method for reproducing the above-mentioned recorded / formatted optical disc is applied.

The above reproducing apparatus has a first TOC which is a first management area of the audio optical disc shown in FIGS.
The first management information recorded in the first management area by accessing the area 1 and the second TOC which is the second management area
Access the start position of area 4 to access this second TOC area 4
Based on address information for indicating the second TOC area 4 in the first management information read by the pickup 22, which is a reading means for reading the second management information recorded in , The second TO
The control unit 35 detects the start position of the C area 4 and controls the second management information reading operation of the pickup 22 via the servo control circuit 25 based on the detection result.

According to FIG. 8, the output from the pickup 22 is sent to the RF signal processing circuit 24. The output signal from the RF signal processing circuit 24 is sent to the servo control circuit 25 and the digital signal processing unit 26.

The outputs from the servo control circuit 25 are the digital signal processing unit 26, the control unit 35, the focus servo driver 27, the tracking servo driver 28, the sled servo driver 29, and the rotary servo driver 30. Sent to.

The output from the focus servo driver 27, the output from the tracking servo driver 28, and the output from the sled servo driver 29 are sent to the pickup 22.

The output from the rotary servo driver 30 is sent to the spindle motor 23.

The output from the digital signal processor 26 is sent to the rotary servo driver 30.

In the inside of the digital signal processing section 26,
The output from the decoding circuit 31 is the audio output terminal 38.
And the subcode detection circuit 32, and the output from the subcode detection circuit 32 is sent to the control unit 35.

The output from the control section 35 is sent to the servo control circuit 25, the first RAM 33, the second RAM 34, and the display section 37.

Further, the output from the first RAM 33 and the second
The output from the RAM 34 and the output from the operation unit 36 are sent to the control unit 35.

Here, according to FIG. 8, the pickup 22
Reads the signal recorded on the optical disc 21,
The read signal is sent to the RF signal processing circuit 24.

The operation of the pickup 22 for reading each area shown in FIG. 2 is controlled according to the outputs sent from the focus servo driver 27, the tracking servo driver 28, and the sled servo driver 29.

The RF signal processing circuit 24 includes the pickup 2
The RF signal sent from 2 is waveform-shaped, the focus servo error signal, the tracking servo error signal, and the sled servo error signal are detected, and these servo error signals are sent to the servo control circuit 25.

Further, the RF signal processing circuit 24 takes out a data part from the waveform-shaped binarized signal and sends it to the digital signal processing section 26.

The servo control circuit 25 receives the focus servo error signal, the tracking servo error signal and the sled servo error signal from the RF signal processing circuit 24, and the first read control signal from the digital signal control section 26. A servo control signal is obtained based on the second read control signal from the control unit 35, and this servo control signal is supplied to the focus servo driver 27, the tracking servo driver 28, and the sled servo driver 29.
And the read operation of the pickup 22 is controlled via these servo drivers.

The servo control signal is sent to the control unit 35.
Also sent to.

Further, the servo control circuit 25 detects the clock component of the binarized signal and sends the detected clock to the digital signal processing section 26.

Further, the digital signal processing section 26 obtains a rotation servo control signal based on the clock from the servo control circuit 25 and the reference clock, and sends it to the rotation servo driver 30, and through this rotation servo driver 30. Rotation control of the spindle motor 23 is performed.

Further, on the basis of the waveform-shaped RF signal and the clock, the decoding circuit 31 causes the EFM to operate.
The data portion of the waveform-shaped binarized signal modulated by the (eight to fourteen modulation) method is decoded, and the decoded data is sent to the audio output terminal 38 and the subcode detection circuit 32.

In the subcode detection circuit 32, the subcode from the decoded data from the decoding circuit 31 is
That is, the above-mentioned P-channel and Q-channel data are detected, and the P-channel and Q-channel data are sent to the control unit 35, and also converted into the first read control signal and sent to the servo control circuit 25. .

Further, the control section 35 includes the servo control circuit 25.
2 and the P-channel and Q-channel data from the sub-code detection circuit 32, the time information recorded in the first TOC area 1 shown in FIG. 2 is extracted to the first RAM 33, and Second TO
The second management information recorded in the C area 4 is taken out and sent to the second RAM 34, respectively.

Now, the operation of extracting the second management information will be described. The step numbers shown in FIG. 7 are shown in parentheses.

First, the pickup 22 uses the above-mentioned first TOC.
The area 1 is accessed (step S1), the first TOC area 1 is reproduced (step S2), and the Q channel is detected by the control unit 35 from the obtained RF signal. further,
Control unit 35, the time address A _t in FIG. 2, A _1, A _2,
The data indicating A ₄ and A ₆ is taken out, and the first RAM 3
3 (step S3).

Further, the control unit 35 determines from the data thus fetched whether or not there is the second TOC area 4 (step S4), and the pickup 22 accesses the time address A ₄ in FIG. The second read control signal is sent to the servo control circuit 25, and the servo control circuit 2
The servo control signal is output from 5 to allow the pickup 22 to access the time address ₄ on the optical disk 21 (step S6).

The control unit 35 also controls the time address A
One minute is subtracted from the time indicating ₄ to detect the start position of the second TOC area 4, that is, the time address A ₃ in FIG. 2 (step S7).

Furthermore, the control unit 35 controls the operation of the pickup 22 by the above-mentioned control method so that the pickup 22 accesses the time address A ₃ on the optical disc 21, so that the pickup 22 is placed on the optical disc 21. Access the above time address A ₃ of
The data in the TOC area 4 is reproduced (step S8).

The control unit 35 controls the R obtained by this reproducing operation.
The second management information recorded in the second TOC area 4 is detected from the Q channel data obtained by the subcode detection circuit 32 based on the F signal, and the second RAM 3 is detected.
4 (step S9).

Further, the control section 35 extracts necessary data from either the first RAM 33 or the second RAM 34 according to a command input from the operation section 36 and sends it to the display section 37.

In addition to the elapsed time or the absolute time of the musical composition, the operating section 36 provides the data which the user wants to display on the display section 37, such as the title of the optical disk 21, the identification number, the musical composition name, and the like. Enter a command to arbitrarily select from the above-mentioned performer name, genre of the above-mentioned music piece, message regarding the above-mentioned musician and the above-mentioned music piece, the above-mentioned maximum level, the above-mentioned minimum level, the above-mentioned average level, and the above-mentioned most frequent level information. The control signal relating to the command input made at this time is sent to the control unit 35.

The display unit 37 displays the information selected by the operation unit 36 based on the data sent from the control unit 35.

In this embodiment, the start position of the second TOC area 4 of FIG. 2, that is, the time address A _{3 is set} to the second TOC area.
It was obtained by subtracting 1 minute from the time indicating the time address A ₄ at an arbitrary position in the C area 4, but the present invention is not limited to this, and the time address A ₄ and the time address A ₃ If the relative position is changed and the calculation according to the relative position is performed, the same effect as that of the present invention can be obtained. Further, in the method of detecting the time address A _3, the time address A ₄ is used as the reference position, but the present invention is not limited to this. For example, the start position of the first lead-out area, the second program area, etc. 5 start position and 2nd
It goes without saying that the same effect as that of the present invention can be obtained even if the start position of the lead-out area 6, that is, the time address A ₂ , the time address A ₅ or the time address A ₆ is used as the reference position.

[0207]

As described above, according to the disc-shaped recording medium having the program area, the first management area and the second management area according to the present invention, the recording is performed in the program area. By recording the second management information including the program attribute information indicating the attribute relating to the program to be recorded in the second management area, the program attribute information which is the second management information can be recorded as the character information. Further, this character information is recorded in a signal format that can be read by a conventional disc reproducing apparatus.

According to the disc-shaped recording medium of the present invention, which has the first management area, the program area, and the second management area from the inner circumference to the outer circumference of the disk,
By recording in the second management area second management information including program attribute information indicating a program attribute relating to a program recorded in the program area, the program attribute information that is the second management information is used as character information. Can be recorded. Further, by recording the time information about the second management area as the first management information in the first management area, the reading of the second management information can be performed as usual without performing a special decoding process. This can be executed by reading the first management area.

Further, in each of the disc-shaped recording media described above, the second management information recorded in the second management area is
Name information of the disc-shaped recording medium, player information of the program, name information of each program, type information of the program, code number for identifying the disc-shaped recording medium, and message information about the program. When at least one of the program attribute information is the program attribute information, that is, the name information of the disc-shaped recording medium, the performer information of the program, the name information of each program, and the program Of at least one of the type information, the code number for identifying the disc-shaped recording medium, and the message information about the program can be recorded in the second management area as character information. Further, by recording the time information about the second management area as the first management information in the first management area, the reading of the second management information can be performed as usual without performing a special decoding process. This can be executed by reading the first management area.

In each of the disc-shaped recording media described above, the data of the program is audio data recorded for each program, and the second management information recorded in the second management area is recorded in the program. When at least one program attribute information among the minimum level, the maximum level, the average level, and the most frequent level is used, the program attribute information, that is, the minimum level, the maximum level, and the average level of the program, And at least one of the most frequent level can be recorded in the second management area. Further, the second management information can be used, for example, for automatically selecting the order of musical pieces to be played according to the reproduction level. Further, by recording the time information about the second management area as the first management information in the first management area, the reading of the second management information can be performed as usual without performing a special decoding process. This can be executed by reading the first management area.

According to the disc reproducing method having the first management information reading step, the detecting step, and the second management information reading step according to the present invention, the data is recorded in the first management area of the disc-shaped recording medium. Based on the first management information
By reading the second management information recorded in the second management area of the disc-shaped recording medium, the second management information, which is character information, is read out as usual in the first management area. It is possible to read out without providing the step of performing the decoding process.

In the disc reproducing method, when a program reading step and a displaying step are further provided, the second management information read in the second management information reading step is subjected to a special decoding process. Even if you do not provide the step to perform, after reading the first management area as usual,
It becomes possible to read out the program recorded in the program area of the disc-shaped recording medium and to display characters during reproduction. Also, by reading the second management information, which is character information, in the first management area as usual, there is no need to provide a special decoding process.
It becomes possible to read.

Further, in each of the above-mentioned disc reproducing methods, further, the data of the program is audio data recorded for each program, and the second management information read in the second management information reading step is the disk. The name information of the recording medium, the player information of the program, the name information of each program, the type information of the program, the code number for identifying the disc recording medium, and the message information about the program. In the case of at least one of the program attribute information, the second management information, that is, the name information of the disc-shaped recording medium, the player information of the program,
Name information for each program, type information of the program, a code number for identifying the disc-shaped recording medium, and at least one of the message information about the program can be read or displayed in characters. It is possible to read the first management area as usual without providing a step of performing a special decoding process.

Further, in each of the above-described disc reproducing methods, the data of the program is audio data recorded for each program, and the second management information read in the second management information reading step is the program data of the program. If at least one of the minimum level, the maximum level, the average level, and the most frequent level is the program attribute information, the second management information, that is, the minimum level of the program, the maximum level, and the average At least one of the level and the most frequent level can be read out or displayed as a character by reading the first management area as usual without providing a step of performing a special decoding process. It will be possible. In addition, the second management information,
For example, it can be used to automatically select the order of musical pieces to be played according to the reproduction level. Further, by reading the second management information, which is character information, in the first management area as usual, it is possible to read the second management information without providing a step of performing a special decoding process.

According to the disc reproducing apparatus having the reading means and the control means according to the present invention, the disc-shaped recording is performed based on the first management information recorded in the first management area of the disc-shaped recording medium. The second management information recorded in the second management area of the medium can be read by the reading means. Further, the second management information, which is character information, can be read by reading the first management area as usual by the reading means without providing a special decoding processing means.

In the disc reproducing apparatus, the control means may access the program area to read the program, and the first management information recorded in the first management area when the program is reproduced. When,
When the control for displaying these information is performed based on the second management information recorded in the second management area, it is obtained by reading the second management area of the disc-shaped recording medium. The second management information is recorded in the program area of the disc-shaped recording medium after the first management area is read by the reading means as usual, even without providing a special decryption processing means. It becomes possible to read out the program and display characters during playback.

Further, in each of the above-mentioned disc reproducing apparatuses, the program data is audio data recorded for each program, and the second management information recorded in the second management area is recorded on the disc. The name information of the recording medium, the player information of the program, the name information of each program, the type information of the program, the code number for identifying the disc recording medium, and the message information about the program. In the case of at least one of the program attribute information, the second management information, that is, name information of the disc-shaped recording medium, performer information of the program, name information of each program, of the program Type information, a code number for identifying the disc-shaped recording medium,
It is possible to read out at least one of the message information related to the above-mentioned program and to display characters,
It is possible to read the first management area as usual even without providing a special means for performing decoding processing.

In each of the above-mentioned disc reproducing apparatuses, the data of the program is audio data recorded for each program, and the second management information recorded in the second management area is added to the program. In the case of at least one of the program attribute information among the minimum level, the maximum level, the average level, and the most frequent level, the second management information, that is, the minimum level and the maximum level of the program, Reading at least one of the average level and the most frequent level, or displaying characters, can read the first management area as usual without providing a special decoding processing means. It will be possible with. Further, the second management information can be used to automatically select the order of the musical pieces to be played, for example, according to the reproduction level, and the operability is improved.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a disc-shaped recording medium according to the present invention applied to an audio optical disc.

FIG. 2 is a diagram illustrating a data area recorded on the audio optical disc.

FIG. 3 is a diagram showing an example of data in a first TOC area of the audio optical disc.

FIG. 4 is a diagram showing an example of data in a second TOC area of the audio optical disc.

FIG. 5 is a diagram illustrating a format of a data bit having character data in a second TOC area of the audio optical disc.

FIG. 6 is a diagram illustrating second management information of the audio optical disc.

FIG. 7 is a flowchart illustrating an operation of the disc reproducing apparatus according to the present invention.

FIG. 8 is a block diagram showing an outline of a main part of a disc reproducing apparatus according to the present invention.

FIG. 9 is a diagram illustrating a data area conventionally recorded on an audio optical disc.

FIG. 10 is a block diagram showing a main part of a conventional disc reproducing apparatus.

FIG. 11 is a diagram illustrating data of subframe information of one frame.

12 is a diagram illustrating a sub-coding frame format in which 98 frames of the frame of FIG. 11 are accumulated.

13 is a diagram in which the sub-coding unit of FIG. 12 is laid down.

FIG. 14 is a diagram illustrating P-channel and Q-channel data that is the sub-coding data.

FIG. 15 is a diagram illustrating a data structure of Q channel.

FIG. 16 is a diagram illustrating control bit data of the Q channel data.

FIG. 17 is a diagram showing data on a Q channel of a conventional TOC.

[Explanation of symbols]

 1 1st TOC area 2 1st program 3 1st lead-out 4 2nd TOC area 5 2nd program 6 2nd lead-out 11 program number part 12 attribute part 13 character data part 22 pickup 32 subcode detection part 33 1st RAM 34 2nd RAM 35 control unit 36 operation unit 37 display unit

Claims (22)

[Claims] 1. A first management information including a program area in which at least one program is recorded, absolute address information of each program recorded in the program area, and absolute address information of all programs. Second management information including attribute information indicating an attribute for each program and / or the disk-shaped recording medium is recorded in a recorded first management area and an area different from the first management area. A disc-shaped recording medium comprising a second management area. 2. A first management area, the program area, and the second management area are respectively provided from the inner circumference to the outer circumference of the disc, and the first management area further comprises: The disk-shaped recording medium according to claim 1, wherein address information for indicating a recording position of the second management area is recorded. 3. The data recorded in the program area is audio data, and the attribute information managed in the second management area includes name information of the disc-shaped recording medium and performer information of the program. And at least one of name information for each program, type information of the program, a code number for identifying the disc-shaped recording medium, and message information about the program. Item 2. The disk-shaped recording medium according to item 1. 4. The data recorded in the program area is audio data, and the attribute information managed in the second management area includes name information of the disc-shaped recording medium and performer information of the program. And at least one of name information for each program, type information of the program, a code number for identifying the disc-shaped recording medium, and message information about the program. Item 2. The disk-shaped recording medium according to item 2. 5. The data recorded in the program area is audio data, and the attribute information managed in the second management area includes a minimum level, a maximum level and an average level of the program.
The disc-shaped recording medium according to claim 1, wherein the information is at least one of the most frequent level. 6. The data recorded in the program area is audio data, and the attribute information managed in the second management area includes a minimum level, a maximum level and an average level of the program.
The disk-shaped recording medium according to claim 2, wherein the information is at least one of the most frequent level. 7. A second management area including a first management area, a program area in which a program managed by the first management area is recorded, and attribute information indicating attributes related to the program recorded in the program area. The management information is recorded in a second management area, and the first management area has absolute address information corresponding to each program recorded in the program area and absolute address information for all programs. And a disc reproducing method for reproducing information from a disc-shaped recording medium in which first management information including the address information for indicating the second management region is recorded. The first management information reading step of reading the first management information recorded in the first management area and the first management information reading step of reading the first management information Based on the time information for indicating the second management area in the first management information, the detection step of detecting the start position of the second management area, and the detection result obtained in the detection step. A second management information reading step of reading the second management information by accessing the start position of the second management area on the basis of the second management information. 8. A program reading step of accessing a program area of the disk-shaped recording medium to read a program, and a step of reading the program read in the program reading step in the first management information reading step. 8. The disc reproducing method according to claim 7, further comprising: one management information and a display step of displaying the information based on the second management information read in the second management information reading step. . 9. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes name information of the disc-shaped recording medium and a program name of the program. Performer information, name information for each program, type information of the program, a code number for identifying the disc-shaped recording medium, and at least one attribute information of the message information about the program is included. The disk reproducing method according to claim 7, which is characterized in that. 10. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes name information of the disc-shaped recording medium and the program. Performer information, name information for each program, type information of the program, a code number for identifying the disc-shaped recording medium, and at least one attribute information of the message information about the program is included. 9. The disc reproducing method according to claim 8, which is characterized in that. 11. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes a minimum level and a maximum level of the program.
8. The disc-shaped recording medium according to claim 7, wherein the disc-shaped recording medium includes at least one attribute information of the average level and the most frequent level. 12. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes a minimum level and a maximum level of the program.
9. The disc-shaped recording medium according to claim 8, wherein the disc-shaped recording medium includes at least one attribute information of an average level and a most frequent level. 13. A disk, from the inner circumference to the outer circumference,
8. The disc reproducing method according to claim 7, wherein the disc-shaped recording medium is reproduced in the order of the first management area, the program area, and the second management area. 14. A disc, from the inner circumference toward the outer circumference,
9. The disc reproducing method according to claim 8, wherein the disc-shaped recording medium is reproduced by arranging the first management area, the program area, and the second management area in this order. 15. A second management area including a first management area, a program area in which a program managed by the first management area is recorded, and attribute information indicating attributes relating to the program recorded in the program area. The management information is recorded in a second management area, and the first management area has absolute address information corresponding to each program recorded in the program area and absolute address information for all programs. And a disc reproducing apparatus for reproducing information from a disc-shaped recording medium in which first management information including address information for indicating a recorded position of the second management area is recorded. Access the area, access the first management information recorded in the first management area and the start position of the second management area, and execute the second management. Information based on the time information for indicating the second management area in the first management information recorded as the first management information read by the reading means. A disc reproducing apparatus comprising: a control unit that detects the start position of the second management area and controls the reading operation of the second management information by the reading unit based on the detection result. 16. The control means includes an operation of the read means accessing the program area to read the program, first management information managed in the first management area when the program is reproduced, and 16. The disc reproducing apparatus according to claim 15, wherein the operation for displaying the information is controlled based on the second management information managed in the second management area. 17. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes name information of the disc-shaped recording medium and a program name of the program. Performer information, name information for each program, type information of the program, a code number for identifying the disc-shaped recording medium, and at least one attribute information of the message information about the program is included. 16. The disc reproducing method according to claim 15, which is characterized in that. 18. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes name information of the disc-shaped recording medium and a program name of the program. Performer information, name information for each program, type information of the program, a code number for identifying the disc-shaped recording medium, and at least one attribute information of the message information about the program is included. 17. The disc reproducing method according to claim 16, which is characterized in that. 19. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes a minimum level and a maximum level of the program.
The disk-shaped recording medium according to claim 15, characterized in that it includes at least one attribute information of an average level and a most frequent level. 20. The data recorded in the program is audio data, and the second management information read in the second management information reading step includes a minimum level and a maximum level of the program,
The disk-shaped recording medium according to claim 16, characterized in that it includes at least one attribute information of an average level and a most frequent level. 21. From the inner circumference to the outer circumference of the disc,
16. The disc reproducing method according to claim 15, wherein the disc-shaped recording medium is reproduced in the order of the first management area, the program area, and the second management area. 22. From the inner circumference to the outer circumference of the disc,
17. The disc reproducing method according to claim 16, wherein the disc-shaped recording medium is reproduced in the order of the first management area, the program area, and the second management area.