JPH04339363A - Optical disk - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

0001

[Table of Contents] The present invention will be explained in the following order. Industrial application field Conventional technology Means for solving the problem to be solved by the invention (Fig. 1, Fig. 3, Fig. 5) Effect (
Figure 1, Figure 3, Figure 5) Example (Figures 1 to 17) Effects of the invention

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to optical discs, and is suitable for application to, for example, master discs for producing compact discs.

0003

Conventionally, when performing so-called mastering to create a master disc for creating a compact disc (CD), first the music information to be recorded is converted into a digital audio signal and recorded on, for example, a 3/4-inch professional video tape. Record on audio tape using a recorder (VTR).

Next, the music information recorded on the audio tape is recorded on a CD 1 using a digital audio editor or the like.
In addition to editing the contents to correspond to the CD, in parallel, a TOC (table of co., Ltd.) consisting of the song number, start time, end time, etc.
ntents) information is created by a TOC data editor and inserted into the beginning of the audiotape.

[0005] In this way, a master tape is created in which a CD music signal consisting of TOC information and music information for one CD is recorded, and then the master tape is played back to produce a CD.
The music signal and the sub-coding signal obtained from the sub-coding signal generator are synthesized by a CD signal generator, and the resulting CD signal modulates the laser beam.

[0006] As a result, a laser beam modulated with a CD signal is irradiated onto a glass master disc coated with a photoresist, and by developing this, a master master disc for CD creation is created. A CD is created by creating a mold called a stamper from the created master disc, and then duplicating it using a method such as an injection molding method or a 2P method.

[0007]

[Problem to be Solved by the Invention] However, in the method of creating a master disc for CD creation by mastering as described above, the music information to be recorded on one CD is recorded and edited on audio tape. However, the large size of the audio tape itself makes it inconvenient to handle and store, and the durability of the magnetic tape is still insufficient.

[0008] Furthermore, in this method of creating a master disc and using a stamper when creating a CD, there is a problem that the master master itself is expensive and production efficiency deteriorates unless a large number of copies are made to create the CD. It was hot.

The present invention has been made in consideration of the above points, and it is an object of the present invention to propose an optical disc that solves the conventional problems at once and allows new optical discs to be easily produced.

0010

[Means for Solving the Problem] In order to solve the problem, the present invention provides a standardized recording area A on the playback side.
In an optical disc 1 in which predetermined information signals are recorded in R0, AR1, and AR2, information signals are recorded in recording areas AR0 and AR2.
1. Optical disc creation information 2, 10 to be referred to when recording on AR2 is stored in the recording areas AR0, AR1, AR2 and/or the area AR10 outside the recording areas AR0, AR1, AR2.
, recorded on AR20.

[0011]

[Operation] The optical disc creation information 2 and 10 to be referred to when recording information signals is stored in the recording areas AR0, AR1, AR2 and/or areas AR outside the recording areas AR0, AR1, AR2.
10. By recording on AR20, new optical disc 1 is created based on optical disc creation information 2 and 10.
can be easily created.

0012

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, 1 generally indicates an optical disc according to the present invention, and the format on the disc is CD.
It is formed of a write-once (WO) optical disc that complies with the standard.

This optical disc 1 has a diameter of 120 [mm] according to the CD standard, and a recording area from an inner diameter of 50 [mm] to a maximum outer diameter of 116 [mm] is used as a program recording area AR0 for recording music information, etc. It is used. Also, the inner circumferential side 2 [mm] of the program recording area AR0
The area with a width of 1 [mm] on the outer circumferential side is used as the lead-in area AR1 and the lead-out area AR2, respectively, and the position of the lead-out area AR2 on the optical disc 1 depends on the recording time length of the program recording area AR0. It's different.

Furthermore, in this optical disc 1, areas outside the CD standard on the inner circumferential side of the lead-in area AR1 and/or on the outer circumferential side of the lead-out area AR2 are
As shown in No. 1238, these areas are used as first and second enlarged recording areas AR10 and AR20.

In the case of this embodiment, for example, in a second enlarged recording area AR20 on the outer circumferential side of the lead-out area AR2, pre-master queue information is recorded as CD creation information created by a queue editor or the like.

[0017] Primastakyu information is a collection of information necessary when duplicating compact discs (CDs).
Using the CD-ROM mode 1 data recording method, in the format shown in Figure 2, data is repeatedly recorded three times starting, for example, 1 minute and 36 seconds from the start point of the lead-out area AR2, and then recorded for 5 seconds or more. It is designed to form a reserve area.

Data recording in CD-ROM mode 1 is performed using 2048 bytes of user data in one subcode frame consisting of 98 frames of the CD audio signal, and in reality, data is recorded using 2048 bytes of user data in one subcode frame consisting of 98 frames of CD audio signals. In the subcode frame, 12 bytes from 0th to 11th bytes are used as a sink, the following 4 bytes from 12th to 15th bytes are used as a header, and 16th to 2063th bytes are used as a header.
The 2048 bytes up to the byte are used as user data, and the 288 bytes from the 2063rd to the 2351st byte are used as user data.
Bytes are used as error correction codes.

When recording the pre-master queue information, the byte size of the pre-master queue information is recorded in 4 bytes of the 16th to 19th bytes in the user data of the first subcode frame, and then the pre-master queue information is recorded. When there is an area in which Takiyu information is recorded and which is not used as premaster Takiyu information in the user data of the final subcode frame, the value (00)H is recorded.

[0020] This PrimaStakyu information is on the optical disk 1.
Disc information sheet 2, which exists only once per disc and records additional information related to disc creation.
and a master cue sheet 10 on which disk format information is recorded.

First, on the disk information sheet 2, all information is in ASCII (American Standard) format.
andard code for information
on interchange) code value (20)H
-(7E)H, and has a format as shown in FIG. That is, the disc title name 3 is recorded in the first 32 bytes from the 0th to 31st bytes of the disc information sheet 2, the manufacturer name 4 is recorded in the next 32 bytes from the 32nd to 63rd bytes, and the following 64 bytes are recorded. The copyright holder name 5 is recorded in 32 bytes from the 95th byte to the 95th byte.

[0022] The following 8 bytes from the 96th to the 103rd byte
The disk production date 6 is recorded in the byte as shown in FIG. 4, and the following 104th byte to 2043rd byte are reserved as reserve 7. In practice, the disk manufacturing date 6 is recorded in 4 bytes, 2 bytes, and 2 bytes in the order of year, month, and day, respectively. For example, if the disk manufacturing date is February 18, 1991, the value (
31 39 39 31 30 32 31 38)H
is recorded.

On the other hand, the master cue sheet 10 has the following characteristics:
The format is as shown in Figure 5, and the value (00 FF
FF 00 00 00 00 00) Following the 8-byte header 11 consisting of H, subcode P queue sheet 12, subcode Q queue sheet 13, and catalog number sheet are created in a predetermined number of lines each containing 8 bytes of data. 14, ISRC (international
A standard recording code sheet 15, a video cue sheet 16, and a hybrid sheet 17 are recorded.

Of these, the subcode P queue sheet 12 and the subcode Q queue sheet 13 are the minimum necessary information for the master queue sheet 10, and the catalog number sheet 14, ISRC sheet 15, video queue sheet 16, and hybrid sheet 17 can be omitted depending on the disk.

[0025] The video cue sheet 16 records information necessary for creating a CDV disc.
The hybrid cue sheet 17 records information necessary for creating a so-called hybrid disk that accommodates information on a plurality of disks.

[0026] Here, the subcode P queue sheet 12 is:
The format is as shown in FIG. 6, and the start time and end time of the start flag by subcode P channel are minutes MIN, seconds SEC, and frame FRAME, respectively.
is recorded in absolute time.

In fact, FIG. 6 shows a case where data for n tracks exists on the optical disk 1, starting from 0 byte (n-
1) The absolute time information of the start time and end time of the start flag from the first track to the n track is recorded every 8 bytes up to the 8th byte, and the lead-out track is recorded in the following 8 bytes of the nx 8th byte. Absolute time information of the start time and end time of the start flag is recorded.

Furthermore, following the start flag of this lead-out track, 4 bytes from the (n+1)×8th byte contain the start time of the 2 [Hz] switch of the start flag formed after the lead-out track. recorded.

As shown in FIG. 7, the subcode Q queue sheet 13 has 8 bytes of data recorded as one line, and each line contains one byte of control/address 20, track number 21, track number 21, The data of index 22, data form 23 and zero 24,
A 3-byte absolute time 25 is recorded.

The upper 4 bits of control/address 20 are defined as control 20A, as shown in FIG.
As shown in the figure, the second bit from the most significant bit is used as a flag bit to indicate whether the corresponding track is a data track or an audio track.

The most significant bit is used as a flag bit to indicate whether the recorded audio is 2 channels or 4 channels, and the least significant bit is used as a flag bit to indicate whether or not the recorded audio has pre-emphasis. Further, the second bit from the least significant bit is used as a flag bit indicating whether or not copying is prohibited.

The lower 4 bits of control/address 20 are defined as address 20B, and as shown in FIG. ” indicates that subcode Q queue sheet 13 is recorded as data, and value “0010” indicates that catalog number sheet 14 is recorded as data, and value “0010” indicates that catalog number sheet 14 is recorded as data.
011'' indicates that ISRC sheet 15 is recorded as data.

Assuming that audio data is recorded as data, the track number 21 is recorded as a two-digit BCD number, and the track number 21 is recorded as a two-digit BCD.
2, the index information within the song represented by track number 21 is expressed and recorded in two-digit BCD.

As shown in FIG. 10, the data form 23 represents the data format of the portion starting from the point indicated by the absolute time 25 depending on the value, and the value (00)H indicates that the data is music information. means, value (01
) When the data is CD-ROM mode (mode)
The value (02)H means that the data is CD-ROM mode 1 data, and the value (03)H means that the data is CD-ROM mode 1 data.
This means that it is ROM mode 2 data, and when the value is (04)H, the data is CD-I or CD-I.
This means that it is ROM XA form 1 or 2 data.

Zero 24 is always the value (00)H, and the following absolute time 25 is a 6-digit BC of 1 byte each.
D represents the minutes, seconds, and frames (1 second = 75 frames), and these values are index 22 or track 21.
The starting point of is expressed as an absolute time on disk 1.

[0036] Here, this subcode Q queue sheet 13
In this case, the 8-byte data in the first line represented by the byte number (00)H is the creation information for the lead-in area, and the track number 21, index 22, absolute time 25 minutes, and frame are all the values (00). )H, one byte representing seconds of absolute time 25 is used as disk type 26.

As shown in FIG. 11, the disk type 26 indicates the type of optical disk 1 by value, and the value (00)
H means CD-DA (audio) or CD-ROM disc, and value (10)H means CD
-It means that it is an I disk, and the value (20)H means that it is a CD-ROM XA disk.

Furthermore, the 8-byte data in the 18th line represented by byte number (88)H in the subcode Q queue sheet 13 is lead-out creation information, and this track number 21 always has the value (AA)H. At the same time, the value (01)H is always set in the index 22.

The first track on the optical disc 1 must have a pause of 2 to 3 seconds at the beginning, but in the case of this subcode Q cue sheet 13, the byte number (08)
This is created using the second row of data represented by H, and at this time, the index 22 and the absolute time 25 are
Seconds and frames are all set to the value (00)H.

[0040] In addition, in this optical disc 1, there are cases where other types of tracks exist before the data track, or when a CD
- If the mode of the ROM changes, the new data track must start with a pre-gap.

This pregap is a part of the data track, is located at the beginning of the data track, and does not include actual user data and is encoded as a pause. Also, a pre-gap is a part that is longer than 1 second and is encoded in the data format of the previous track, and a part that is longer than 2 seconds and is encoded in the same data format as the other part of that data track. We are separated.

Therefore, this subcode Q queue sheet 13
In the case of , the data in the 7th and 8th rows represented by byte numbers (30)H and (38)H, and the byte number (48)
)H and (50)H data on the 10th and 11th lines are used to create such a pre-gap.

Furthermore, in this optical disk 1, if another type of track exists after the data track,
This data track must end with a postgap, which is located at the end of the data track and is at least two seconds long and does not contain any actual user data. Therefore, in the case of this subcode Q queue sheet 13,
This is created using the data on the 12th line represented by byte number (58)H.

The catalog number sheet 14 following the subcode Q queue sheet 13 has a format as shown in FIG. The address is "0010" indicating that the catalog number sheet 14 is recorded, and the address as a whole always has the value (02)H.

[0045] Also, the catalog number information of disk 1 is written in the following 2nd to 8th bytes as U, which consists of 4 bits and 1 digit.
Recorded in 13-digit BCD (N1 to N13) using PC/EAN-code (BAR coding), 8
The value "0000" is always recorded in the lower four bits of the byte. Note that if this catalog number information does not exist, this catalog number 5 is omitted.

Further, the ISRC sheet 15 recorded following the catalog number sheet 14 has a format as shown in FIG.
Standard-Recording-code) is recorded. Note that if there is no ISRC, this ISRC sheet 15 is omitted.

ISRC sheet 15 is 2 per track.
Each line consists of 16 bytes of data, with control/address 20 recorded in the first byte of each line, and the lower 4
The bit is the value "0011" indicating that the ISRC sheet 15 is recorded as an address, and the value as a whole is always (03)H.

In addition, the track number corresponding to the second byte from the beginning of each row is recorded, and the 4 bytes from the fifth byte to the eighth byte from the beginning are added to two rows, totaling 8 bytes, as shown in FIG. ISR of 12 characters with content
C is recorded.

[0049] In this ISRC, the first to fifth characters I1 to I5 are sequentially recorded in 6-bit units in the first 4 bytes, and the 6th to 12th characters I6 to I12 are recorded in 4-bit units in the following 4 bytes. It is made to be. Actually 1
And the second character I1 and I2 are country codes, 3~
The 5th character I3-I5 is the owner code, the 6th and 7th characters I6 and I7 are the recording year, and the 8th-12th characters I8-I1
2 has a serial number recorded on it.

In the above configuration, the content of the pre-master queue information as described above is created by the queue datater 31 of the compact disc creation system 30 as shown in FIG. 15, and is once recorded on the magnetic disc 32 as a storage device. .

The cue editor 31 has a microcomputer configuration and is capable of creating pre-master cue information in response to operations by an operator. The data is read out by a CD recording control device 33 comprising:

Further, the CD recording control device 33 receives the CD signal S1, which is a combination of the CD music signal and the sub-coding signal, and as a result, the CD recording control device 33 inputs the pre-master queue information and the CD signal S1. In response, a CD recording signal S2 is generated and sent to the CD recording device 34.

This CD recording device 34 is loaded with a WO type optical disc, and thus a CD signal S1 consisting of TOC, music information, etc. is recorded in an area conforming to the CD standard, and a second signal S1 which is not in accordance with the CD standard is recorded. An optical disc 1 is created in which pre-master queue information is recorded in the enlarged recording area AR20.

Furthermore, by using the optical disc 1 thus created as a master disc for CD creation, a WO type compact disc can be easily duplicated. That is, in this case, the optical disc 1 on which the pre-master queue information is recorded in the second enlarged recording area AR20 is transferred to the CD playback device 3.
5, the pre-master queue information recorded in the second enlarged recording area AR20 is played back, and this is
The data is written to the magnetic disk 32 through the D recording control device 33.

Next, the CD recording control device 33 records the optical disc 1 while encoding the content of the premaster queue information.
A plurality of CD recording devices 34A, 34B,...
... and by using the optical disc 1 as a master disc in this way, it is possible to easily duplicate and create a plurality of compact discs.

Furthermore, by using the WO type optical disc 1 as the master disc in this way, the CD
Compared to the conventional method of recording music information on a single disc on audio tape, we have created a master disc that is much easier to handle and store, and is also highly durable. realizable.

According to the above configuration, by recording the pre-master queue information as the optical disc creation information necessary when creating a compact disc in the second enlarged recording area AR20, the pre-master queue information can be recorded in the second enlarged recording area AR20. It is possible to realize an optical disc 1 that can easily create a new optical disc based on information.

[0058] In the above-mentioned embodiment, a case has been described in which optical disc creation information consisting of pre-master queue information is recorded in the second enlarged recording area AR20. However, the present invention is not limited to this; The information may be recorded in the recording area AR10.

Furthermore, in the above embodiment, the case where the pre-master queue information was recorded as CD-ROM mode 1 data was described, but the present invention is not limited to this.
D-ROM mode 2, CD-ROM XA, CD-I
The data may be recorded as form 1 or 2 data, or as CD audio signal data, or may be recorded using the user mode of R to W channels of the subcode.

Incidentally, when recording data as a CD audio signal, as shown in FIG. 16, the pre-master queue information corresponds to every 3 channels of audio data, each consisting of 16 bits on each side for every 8 bytes. recorded.

That is, of the audio data for three channels, a byte number is recorded in 16 bits of the first left channel L0, and a pre-master key is recorded in the subsequent 64 bits from the first right channel R0 to the third left channel L2. 8 bytes of user information is recorded. Furthermore, parity is recorded in the upper 8 bits of the 16 bits of the third right channel R2, and (FF)H is recorded in the lower 8 bits.

When recording using the user mode of R to W channels of the subcode, 8-byte data of pre-master queue information is recorded for every 24 symbols in the R to W channels of the subcode. The R, S, and T channels of this symbol number 00 are set as a mode to a value "111" representing the user mode, and the following U, V, and W channels are set as an item to a value "000."

The following R to W channels of symbol number 01 are set to the value "111111" as instructions, and the R to W channels of symbol numbers 02 and 03 that follow are set to the value "111111" as instructions.
W channel is used as parity Q0 and Q1,
The following two symbol numbers 04 and 05, 06 and 07,...
..., 18 and 19, 8-bit 1-byte data is represented by the V and W channels of even symbol numbers and the R to W channels of odd symbol numbers, and then R to W of the following 4 symbol numbers 20 to 23. Channels are used as parities P0 to P3.

Incidentally, when recording using the user mode of R to W channels of the subcode, it is not limited to the enlarged recording areas AR10 and AR20 as in the above embodiment, but also the program recording area AR0 and the lead-in area. It can also be recorded in AR1 or lead-out area AR2.

Furthermore, in the above-described embodiments, the present invention was applied to a master disk for producing a WO type compact disk, but the present invention is not limited to this, and can be applied to, for example, a video disk or a magneto-optical disk. It is suitable for wide application to other optical disks.

[0066]

As described above, according to the present invention, the optical disc creation information to be referred to when recording information signals in the recording area is recorded in the recording area and/or in an area outside the recording area. , it is possible to realize an optical disc in which a new optical disc can be easily created based on the optical disc creation information.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of an optical disk according to the present invention.

FIG. 2 is a chart for explaining a method of recording pre-master queue information using CD-ROM mode 1;

FIG. 3 is a chart for explaining the overall structure of pre-master queue information.

FIG. 4 is a chart for explaining the contents of the disk production date.

FIG. 5 is a chart for explaining the format of a master cue sheet.

FIG. 6 is a chart for explaining the format of a subcode P cue sheet.

FIG. 7 is a chart for explaining the format of a subcode Q queue sheet.

FIG. 8 is a diagram for explaining the contents of the control.

FIG. 9 is a chart for explaining the contents of addresses.

FIG. 10 is a chart for explaining the contents of a data form.

FIG. 11 is a chart for explaining the contents of disk types.

FIG. 12 is a diagram for explaining the format of a catalog number sheet.

FIG. 13 is a chart for explaining the format of an ISRC sheet.

FIG. 14 is a chart for explaining the contents of an ISRC sheet.

FIG. 15 is a block diagram showing the configuration of a compact disc creation system.

FIG. 16 is a chart for explaining a method of recording premaster queue information using an audio signal.

FIG. 17 is a chart for explaining a method of recording premaster queue information using subcodes.

[Explanation of symbols]

1... Optical disk, 2... Disk information sheet, 10...
...Master Kew Sheet, 11...Subcode P Kew Sheet, 12...Subcode Q Kew Sheet, 14...Catalog Number Sheet, 15...ISRC Sheet, 30...
...Compact disk creation system.

Claims (1)

[Claims] Claim 1: In an optical disc in which a predetermined information signal is recorded in a standardized recording area on the playback side, optical disc creation information to be referred to when recording the information signal in the recording area is stored in the recording area. and/or an optical disc characterized in that recording is performed in an area outside the recording area.