JPH03288369A - Cd media and recording and reproducing device - Google Patents

Abstract

PURPOSE:To use a disk failing recording by controlling the inhibition of repro ducing to a track area failing recording or a track area, which cannot be repro duced by a reproducing device, etc., by the reproducing device based on reproduc ing control information. CONSTITUTION:Based on the reproducing control information stored in a CD- WORM disk 2, a reproducing device 9 controls the inhibition of reproducing to a recording failing track number area or reroducing disable track number area, etc., generated by the abnormality of a CD-WORM disk recording device or the CD-WORM disk 2. On the other hand, when it is desired to change the order of track numbers to be reproduced after recording, it is controlled by the reproducing device 9 based on the reproducing control information stored in the CD-WORM disk 2. Thus, the CD-WORM disk equipped with the area or the like of the track number failing recording can be used as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a CD medium which is an information storage medium for computer data, audio, etc. It is characterized by the handling of playback control information when playing back.

[Conventional technology]

For example, in a CD-WORM disk recording device, a recording failure or the occurrence of a portion that cannot be played by a playback device can cause
This is caused by an abnormality in the D-WORM disk recording device or CD-WORM disk medium. Recorded CDWORM discs with these defective areas are forced to become unusable due to playback equipment issues such as continuous playback being impossible in the track number area containing the defective areas or the original music being unable to be played. , unrecorded CD-WORMO
CD-WORMO by means of new recording according to R method
He had completed the recording for R Hori. Similarly, if a track number area occurs that you no longer wish to play back after recording, or if you need to change the order of track numbers to be played back after recording, unrecorded CI)
-CD by means of newly recording according to WORMOR method
- He had completed the recording for WORMOR Hori.

On the other hand, in a playback device, a CD-W on which multiple songs are recorded
One of the special functions when playing the ORMOR method is a program playback function that allows you to specify the song number you want to play, the order of the songs, etc. in advance, and play it according to the settings. In order to have a recorded CD-WORMOR having the above-mentioned defective portions played back on a playback device as if there were no defects without re-recording, the program playback function described above was sometimes used. However,
The settings of this program information are updated each time the CD-WORMOR is inserted or removed from the playback device or each time the power of the playback device is reset. Therefore, recorded CD-Ws with the above defective parts
Even if a specific program playback method has been determined for the ORMOR method, in conventional playback devices, each time a recorded CD-WORMOR method is installed in the playback device, a program playback method specific to the recorded CD-WORMOR method is determined. Since it is necessary to manually write the program, each time the program is manually written using the numeric keypad of the playback device. In addition, in order not to forget the program contents, they were memorized in writing or other means.

[Problem to be solved by the invention]

As explained above, areas of track numbers where recording has failed due to an abnormality in the CD-WORM disc recording device or CD-WORM disc medium, or areas with track numbers that cannot be played back by the playback device, are continuous with the playback device. The music may become unplayable or the original music may not be playable.
Due to the playback device, it was forced to be unusable, resulting in a waste of time and CD-WORM disk media due to re-recording.

On the other hand, in order to have a recorded CD-WORMOR with the above-mentioned defective parts played back on a playback device as if there were no defects without re-recording, the program playback function was sometimes used, but the recording Completed CD-WOR
It is indispensable to set the program many times each time the MOR device is installed. In the setting operation of this program, the program was manually set using the numeric keypad of the playback device, or it was memorized by means such as text so that the program contents would not be forgotten. This has resulted in inconveniences such as time consuming, errors in program settings, and loss of program contents.

In view of these points, the present invention prohibits playback of track number areas where recording has failed, track number areas that cannot be played back by a playback device, and track number areas where playback is no longer desired after recording. To provide a recording and reproducing disc that does not require a means for newly recording a reproduction order change on an unrecorded disc when changing the order of track numbers to be reproduced after recording.

[Means to solve the problem]

In order to solve the above problems, it is necessary to store playback control information such as prohibiting playback of defective track numbers and changing the playback order in advance in accordance with the CD-WORMOR method, and to control the playback of the disc on the playback device. A means for detecting information and a control means for controlling reproduction in accordance with the detected reproduction control information are required.

As a means of recording program information on a CD-WORM disc, it is possible to perform direct processing such as pasting a label with program information recorded on the CD-WORM disc, but it is important to protect the information recorded on the CD-WORM disc. In the present invention, when recording music data in an area of any track number in the CD-WORMOR method, a lead-in area in which TOC is written, or a lead-out area. a method for storing reproduction control information for recording reproduction control information of the information in address units in a section; a detection means for detecting reproduction control information of the information in address units from the CD-WORMOR method; and information in the address units. The problem is solved by using a disc playback device that has a control means for controlling playback.

[Effect]

The present invention uses the tank bottom to identify areas of track numbers where recording has failed due to an abnormality in the CD-WORM disk recording device or CD-WORM medium, and areas with track numbers that cannot be reproduced by the playback device. CD-WORMOR prohibits playback of track numbers in the track number area that you no longer wish to play.
It is possible to control the playback device based on the playback control information stored in the code. Further, when it is desired to change the order of track numbers to be reproduced after recording, the order of track numbers can be changed by controlling the reproduction device based on reproduction control information stored in the CD-WORMOR method. Therefore, it is possible to use the CD-WORMOR method as is with a playback device, which has areas of track numbers where recording has failed, track number areas that cannot be played back, track number areas that you no longer want to play after recording, etc. be able to.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In Fig. 1, 2 is a CD-WORMO method, 4 is a spindle motor, 5 is an optical head, and 6 is a CD-WORMO method.
7 is a recording signal modulation circuit; 8 is a slide mechanism for moving the optical head; 9 is a reproducing circuit unit for demodulating the signal from the optical head; 10 is a broken line A drive circuit for controlling and driving the drive unit 3 surrounded by 1) is a display unit, 12 is an operation button unit such as a numeric keypad, and 13 is a microcomputer, and a semiconductor laser drive circuit 6. Recording signal modulation circuit 7
．． The drive circuit section 10, display section 1), etc. are controlled according to the operation of the operation button section 12.

These constitute a recording device based on the CD-WORMOR method.

According to the present invention, playback control information intended by a person operating a CD-WORM disc 2 recording device is inputted using the operation button section 12, and the microcomputer 1)
This playback control information is manually inputted to the modulation circuit 7 to make the playback control information detectable by the playback control information detection circuit of the playback circuit 9 of the M disk playback device, and then the semiconductor laser drive circuit 6
The playback control information is recorded in accordance with the CD-WORMOR method. The EFM format signal recorded according to the CD-WORMOR method consists of a synchronization signal, a margin bit for DC component suppression, a subcode, and music data. The playback control information is placed in this music data section. The area in which music data can be recorded exists in all areas where EFM format signals are recorded, and is limited to any track number area, the lead-in area in which TOC is written, or the lead-out area. and record playback control information there. However, the number of bits of playback control information data in the lead-in area and lead-out area is within ±1 of that expressed in music data.
It is necessary to keep it within 5LSB.

The playback control information intended by the person operating the recording device is either the area of the track number where recording failed, the area of the track number that cannot be played by the playback device, or the area of the track number that no longer wishes to be played after recording. This is based on prohibition of reproduction of a specified track number when it is desired to control reproduction of a track number area by a program, or change of the order of track numbers when it is desired to change the order of track numbers to be reproduced after recording. Therefore, the operation button unit 12 of the recording device accepts the prohibition of reproduction of the designated track number or the change of the order of the track numbers, and the microcomputer 13
The reproduction control information detecting circuit of the reproduction circuit 9 of the D-WORM disc reproduction device converts the reproduction III information that can be detected, and the converted reproduction control information is added to the music data portion of the EFM format signal to be recorded. put in.

The case where the request is accepted using the operation button section 12 will be explained. When instructing to prohibit reproduction of a specified track number, the operation button reception sets the mode to a reproduction prohibition mode for the specified track number and accepts the manual input of the track number to be prohibited from reproduction. If you want to change the order of track numbers,
The operation button reception mode is set to the track number order change mode and accepts the manual input of the track numbers determined at the time of recording in the desired playback order. These operation button section 1
The playback control information accepted in step 2 is converted by the microcomputer 13 into a signal format of playback control information that can be detected by the CD-WORM disc playback device.

The signal formant will be explained. The track numbers whose reproduction is prohibited are replaced with information indicating the reproduction order of the track numbers desired to be reproduced. Therefore, the reproduction control information can be expressed as data indicating the reproduction order of the track numbers to be reproduced. The numerical value of each track number to be reproduced is expressed in 1 byte by converting it into a 7-bit binary value and adding a 1-bit parity flag to it. The playback order is realized by sequentially arranging 1-byte data. At the beginning of the order of 1-byte data C, i is output using the sync patterns a and b placed immediately before it.

Sink patterns a and b do not exist in the data 1
It is expressed by pattern a with all 1 bytes and pattern b with 1 byte all 0.

The above-mentioned sync pattern and data c I, C2-c , indicating the reproduction axis of the track number to be reproduced are repeatedly recorded serially at the LSB position of the music data. The number of repeated recordings is 10 times in an arbitrary track number area, and the number of times to fill the entire area in the lead-in area and lead-out area. FIG. 2 illustrates the format of a signal of reproduction control information, which is data indicating the reproduction order of track numbers to be reproduced. This formatted reproduction control information is manually inputted to the modulation circuit 7 in FIG. 1, and is recorded in accordance with the CD-WORMOR method via the semiconductor laser drive circuit 6.

By the method of storing playback control information explained above, CD-
Track number areas where recording has failed due to abnormalities in the WORM disk 2 or CD-WORM storage medium, track number areas that cannot be played back by the playback device, and track number areas where you no longer wish to play back after recording. CDs that prohibit playback of track numbers such as
- The playback device can control based on the playback control information stored in the WORMOR method. Further, when it is desired to change the order of track numbers to be reproduced after recording, the order of track numbers can be changed by controlling the reproduction device based on reproduction control information stored in the CD-WORMOR method. Therefore, a CD-WORM that has a track number area where recording failed, a track number area where playback is not possible, a track number area where you no longer wish to play back after recording, etc.
It becomes possible to use the OR method as it is in a reproducing device.

The above-mentioned signal formant is one example, and includes data indicating the playback order of track numbers to be played,
Similar effects can be obtained with anything that can be detected by the playback device.

〔Effect of the invention〕

As explained in detail above, according to the present invention, CD-W
Track number areas where recording has failed due to ORMOR law or CD-WORM disc media abnormalities, track number areas that cannot be played back by the playback device,
By making it possible for the playback device to control playback of track number areas, etc. that you no longer wish to play after recording, based on playback control information, CD-WORMs that fail to record or cannot be played back by the playback device can be prevented. The disk can now be used as is. Further, when it is desired to change the order of track numbers to be played back after recording, the order of track numbers can be changed by controlling the playback device based on playback control information stored in the CD-WORM disc. Therefore, it becomes possible to use a recording failure disk that was previously unusable, and it is possible to solve the problem of wasting CD-WORM disk media and time due to re-recording.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining one embodiment of the present invention, and FIG. 2 is a signal format of reproduction control information stored on a disk. 1...Cartridge 2...CD-WORM disk 5...Optical head 6...Drive circuit 7...Modulation circuit 9...Reproduction circuit 12...Operation button 13...Microcomputer

Claims (4)

[Claims] (1) A disk, which is an information storage medium, is spatially divided by track number or address such as INDEX,
In a recording/playback device for a CD medium (hereinafter referred to as a CD-WORM disk) capable of recording information in address units for each address, an area of an arbitrary track number of the CD-WORM disk, a read for writing TOC. By recording the playback control information of the address unit information in the music data section of either the in area or the lead-out area, the playback control information of the address unit information is detected from the CD-WORM disc. control according to the reproduction control information of the address unit information recorded on the CD-WORM disc by using a disc reproducing apparatus having a detection means for controlling the reproduction of the information in the address unit and a control means for controlling the reproduction of the information in the address unit. A recording/reproducing device characterized in that: (2) The recording and reproducing apparatus according to claim 1, wherein the reproduction control information of the address-based information recorded on the CD-WORM disc represents designation of an address to be reproduced. (3) The recording and reproducing apparatus according to claim 1, wherein the reproduction control information of the address unit information recorded on the CD-WORM disc represents the order of the addresses to be reproduced. (4) CD media in which information in address units is continuously recorded in the LSB of the music data section.