JPH06295569A - Optical disk recording device - Google Patents

Abstract

PURPOSE:To discriminate between the completion of index information recording and recording of its information and an additional recording state by detecting whether or not there is marking indicating the index information completion and the end of the recording of its information. CONSTITUTION:Time information for a track which is not yet recorded, but assigned at equal intervals and a start track number corresponding to 2nd assigned index information are recorded in a data recording area 23 after the index information is recorded. Then the start time of each track recorded in an index information area 20 needed not be recorded at every track. Then those data can be utilized as a marking signal indicating that the index information is recorded. Namely, when an optical disk is reproduced and read out by signal detection, it is judged that the index information area is already recorded and when there is not the detection read, it is judged that the area is not recorded. Consequently, there is the index information record even in the additional recording state, so the optical disk can be reproduced by a CD player dedicated to reproduction similarly to CDs which are reproduced only.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk recording device.

[0002]

2. Description of the Related Art Conventionally, as an optical disk medium for reproducing a music signal, there is a compact disk (CD) which has been widely used by consumers. In recent years, researches on recording films of discs have been actively conducted, and recordable optical discs have been developed. A recordable optical disc is a write-once (DRAW) type that can record only once and cannot be erased, such as a type in which recording pits are formed by deforming the recording film or burning the recording film by heat generated by laser light irradiation. ), And similarly, a type of recording information by using a laser beam as a light source and applying an external magnetic field from the opposite position to the optical disc to change the direction of perpendicular magnetization of the recording film. Rewritable (Era that can be repeatedly erased
There is a so-called “sable-DRAW”, a magneto-optical type).

An optical disc recorder (recording device) has been developed for recording by using an optical disc having a recording film capable of freely recording. In particular, if the recording is performed on a recordable optical disc medium that operates according to the same reproduction principle as that of a reproduction-only CD player, and the disc has the same disc format as the reproduction CD, this optical disc is the same as the reproduction-only CD. It can be played on a CD player.

In the case of these optical disk recorders, the table of contents information (T for a CD is recorded on the inner circumference of the optical disk after recording.
An area (TOC area) of an empty area is taken in order to record OC (Table of Contents) information as address information for each track, and a signal from the outside of the empty area to the outer peripheral side of the optical disc to the user recordable area ( For example, in the case of a CD, a music signal or the like) is recorded. Then, when recording is performed up to a predetermined outer peripheral position, or when it is determined that recording is performed up to an arbitrary position and further recording on the outer peripheral side is not performed on the optical disc, the optical signal is transmitted to the index area of the inner peripheral portion of the optical disc. The signal that has been recorded by moving the pickup (music signal (song) for a CD)
The table of contents information was recorded in this table of contents area, and the recordable optical disk was used as the recording completed disk.

[0005]

However, when the recording of the recordable type CD is completed, TO which is the table of contents information of the tune is used.
It is when the C information has been recorded in the TOC area, which is the table of contents area. In other words, in the conventional optical disc recorder, the TOC cannot be recorded until after the recording end of the user recordable area is completely determined. However, for example, in a read-only CD player, the TO of the CD
If the TOC information is read from the C area and the start position of each track on the disc is not recognized, reproduction cannot be performed.

This is because a general reproduction-only CD player, when a CD is inserted, first searches for the TOC area and recognizes this TOC information. Therefore, T
Even if an attempt is made to insert, for example, one track into a read-only CD player before or during recording of which OC information has not yet been recorded, but the TOC information is not present, the first track starts. The position cannot be recognized and cannot be played.

Therefore, it is not possible to use the music information of a recordable type CD which has not recorded TOC yet or has recorded some music with the CD recording device and which is in the middle of recording. In the recordable CD, the TOC information must be recorded in order to be used by the CD player, although there is still a recordable area. When the TOC information is recorded, the recording is completed, and additional recording cannot be performed even if there is a recordable free area. This is not an important problem if the optical disc is an erasable medium, but the write-once recording medium that can record only once has a drawback that the cost is high.

[0008]

An optical disk recording apparatus according to the present invention includes means for recording a plurality of recording signal blocks in a user recordable area of an optical disk, and index information indicating recording positions of the respective recording signal blocks to a user. Means for recording in a predetermined area outside the recordable area, the first table-of-contents information of each recording signal block already recorded before the recording signal is completely recorded in the user recordable area, and the remaining user recordable area of the optical disc. A second table-of-contents information, which is allocated by means for allocating areas to a plurality of signal blocks at equal intervals, is provided in a predetermined area for recording the table-of-contents information, and the allocated equally-spaced time information is provided in a predetermined area of the optical disc. Has a means for recording in the area and a means for reproducing it,
A recording signal for recording to the remaining user recordable area is provided, which has means for recording a marking for indicating that the table of contents information has been recorded on the optical disc, and the means for detecting the marking identifies whether or not the table of contents information is recorded. At the time of recording a block, it has means for adding sub-code information to the optical disc based on the time information at equal intervals, and when recording of all the recorded signal blocks recorded as the table of contents information is completed. , Recording by a means for recording the block indicating the end of the recording signal block, at the same time, recording is completed on the entire user recordable area, and marking for indicating that the block indicating the end of the recording signal has been recorded is recorded on the optical disc. Whether or not all recording of the recording signal block is completed by means of having means, recording by this means, and means for detecting this It is intended to identify.

[0009]

[Function] An unrecorded optical disc which has not been recorded in the table of contents recording region is freely recorded on a plurality of tracks in the user recordable region, and a track at an arbitrary position is recorded. When it is desired to reproduce by a dedicated CD player, the optical disc recording apparatus of the present invention uses the first table-of-contents information of a plurality of tracks recorded so far and the remaining recordable user recordable area of the optical disc at equal intervals. The second table-of-contents information, which is a recording signal block allocated by time, is recorded in the TOC area.

The timetable information at equal intervals can be recorded on the optical disc, and the information can be reproduced from the optical disc. By this method,
When the optical disc in the middle of recording is inserted into a general reproduction-only CD player, the table-of-contents information can be recognized because the table-of-contents information is already recorded in a predetermined table-of-contents area, so that the already-recorded track can be reproduced. it can.

It is possible to read sub-code information at the time of recording a signal in the remaining user recordable area based on the time interval information of equal intervals for allocating the time of the remaining user recordable area described above. it can.

Also, means for recording marking (as a flag) on the optical disk to indicate that TOC data has already been recorded in the TOC area, and recording of all recording signal blocks recorded in the TOC area have been completed. Since it is equipped with a means for recording markings (as flags) on an optical disc for indicating,
In the operation mode for recording the area later, even if the optical disk in which the user recordable area and the TOC area have been completely recorded is inserted, it is possible to detect the presence or absence of these two flags, or the completed optical disk. Even if it is recorded in the TOC area, it is still possible to identify whether or not it is a recordable optical disc in the user recordable area.

[0013]

[Embodiment] In this embodiment, a recordable optical disc is a write-once CD (CD-recordable) that can be recorded once and cannot be erased.
R, DRAW, etc.) will be used for the explanation. The table of contents information is TOC (T
This is referred to as “available of Contents” information.

FIG. 1 shows a block diagram of an embodiment of an optical disk recording apparatus according to the present invention. In FIG. 1, a write-once CD
The optical disc 1 is driven by a spindle motor 2 which is CLV-controlled so that the disc rotation works at a constant linear velocity. The recorded information on the write-once type CD 1 is read by the optical pickup 3 and applied to the EFM demodulation circuit 6 via the head amplifier 4 and the HF signal detection circuit 5. EFM demodulation circuit 6
The output signal from is supplied to the system control unit 10 via the sub-code extraction circuit 7, and the music signal read by the demodulation circuit 8 is demodulated and output to the terminal 9 as a reproduction signal.

At the time of recording on the optical disk 1, the subcode signal output from the system control unit 10 is added to the EFM modulation circuit 15 via the subcode insertion circuit 11.
This acts as a table of contents information recording means. Further, the EFM modulation signal circuit 15 receives the recording information as a signal from the input terminal 12
From the A / D converter 13 and the modulation signal processing circuit 14, which functions as a signal recording means. EF
The output of the M modulation circuit 15 is applied to the laser modulation circuit 16, the output signal from the laser modulation circuit 16 is applied to the optical pickup 3, and the optical pickup 3 outputs the optical disc 1.
Make a recording on top. The table of contents information is recorded in the subcode signal. The subcode signal is added to the information signal and recorded.

On the other hand, in order to move the optical pickup 3, a slide control signal is output from the system control section 10, and a slide device 18 is passed through a slide drive circuit 17.
Added to. The position control means controls the movement of the optical pickup to a position corresponding to each recording. The optical pickup position detection output and the detection output signal of the write-once type CD1 mounting from the optical disc sensor 19 are respectively added to the system control unit 10. In the write-once CD, the user recordable area corresponds to the program area, for example.

Next, a recording signal based on the CD format standard will be described with reference to the drawings. 1 in FIG.
The structure of an EFM frame is shown. The signal to record is 1EF
The M frame is composed of 588 channel bits, and comprises an EFM frame pattern for synchronization, a sub code, audio data (CDROM-data), and an error correction code in order from the left. The EFM frame pattern for synchronization is a synchronization signal for identifying the EFM frame. The subcode consists of 8 bits of P, Q, R, S, T, U, V and W. The sub-codes are collected for 98 EFM frames to form one sub-code.

Of the sub-codes, the sub-code P distinguishes between the tunes and the tunes. In Figure 7, subcode Q
3 is a block diagram of the program area and the lead-out area of FIG. Here, as the position information of the optical disc, there are a track number, an elapsed time in the track, an absolute time, an error detection code word for those data, and 2 bits for a subcode synchronization signal, which is composed of a total of 98 bits. Has been done.

The track number is 00 in the TOC area, and the information at that time records the start time code of each track as shown in the configuration diagram of the subcode Q in the TOC area of FIG. At the same time, information such as the total number of tracks and the end time of all tracks is recorded. Further, in the program area, the track numbers are assigned 01, 02, 03, 04 ... In the program order.

Next, the operation will be described. In FIG. 1, it is assumed that the mounted write-once type CD 1 is in an unrecorded state. In the case of recording on the write-once type CD 1, FIG. 2 shows an area structure in which the present invention is applied to the write-once type CD as a radial cross-sectional view seen from the side of the disc. Here, the TOC area 20 is set as an empty area, and recording is started from the innermost circumference of the user recordable area 21 that is the outer circumference of the TOC area 20. T
Details of the OC area are shown in FIG. The data includes the total number of tracks 30, start track number 31, end time 32 of all tracks, track number and start time 33 of each track.

The track number to be recorded first is 1,
The start time code position of this track is managed by the system control unit 10 shown in FIG. 1 and stored as data in an internal memory (not shown). When this recording is performed, each block in FIG. 1 operates according to the configuration of the above-described embodiment. That is, the start time code corresponding to each track shown at 33 in FIG. 5 is stored in the same format.

What is important is that the EF
The sub-code data input to the M modulation circuit 15, that is, the data including the track number is generated by the system control unit 10. Then, when recording is stopped and recording is started again, recording is continued from the previous recording stop position, but the track number at this time is incremented by 1 to become the second track. Therefore, the start time code of the second track is a start time code of a different track from the previously recorded first track.

Recording on the second track, stopping recording,
When recording is further restarted, the next track number becomes the third track, and the track number is incremented (incremented by 1) every time the recording is stopped. The start time code of each track at that time is TM (1) for the first track, TM (2) for the second track, and the third time as shown in the TOC data table of FIG.
The track becomes TM (3), and these are the first table of contents information in the present invention. If this is shown in the optical disk area of FIG. 2, the area 22a of the first track, the area 22b of the second track, and the area 22c of the third track are arranged from the inner circumference side of the user recordable area 21, and the areas are arranged sequentially. .

Each track area can be separated by any length of time. Here, recording is temporarily stopped in order to switch tracks.
It is also possible to implement a configuration in which the system control unit 10 of FIG. 1 receives a track number increment command or the like and controls to switch the track.

However, in the state of this write-once type CD, since the TOC area has not been recorded yet, it is impossible to reproduce the track in the user recordable area with a general reproduction-only CD player. . Therefore, in the present invention, the TOC area is recorded from this state,
Further, in order to enable the additional recording to be continued in the area where the recording area still remains, this is realized by the control operated according to the flowchart shown in FIG.

FIG. 3 is a TOC data calculation flowchart of the remaining user recordable area in the present invention.
The purpose is to perform recording halfway and divide the remaining user recordable areas that have not yet been recorded into tracks by allocating an appropriate time. The table of contents information assigned here becomes the second table of contents information. The TOC data calculation is performed by the system controller or a microcomputer connected to send the calculated data to the system controller.

First, in step S1, the track division time is determined. This time is the elapsed time within each track. In this embodiment, each track is equally spaced X
Therefore, when recording on the optical disc 1 in the future, the time information allocated at equal intervals, the maximum track number at that time, and the start track of the allocated second table-of-contents information are set. As will be described later, the three pieces of information of the number are recorded at a specific position on the disc, reproduced, recognized, and track-managed.

Next, at step S2, the lead-out start time code A2 (end time of all tracks) is set to X (track) at the last time code recorded so far, that is, the time code TMLAST at the time of additional recording next time. Set the value to which (division time) is added. The maximum time that can be recorded on the optical disc changes depending on the linear velocity of the placed optical disc and the track pitch of the optical disc. Therefore, it is necessary to finish the track within this maximum recordable time (that is, within A2) and set the lead-out track outside the last track, so it is necessary to set the time so as not to exceed this time. .

Next, in step S3, the track number is
The value is the last track number currently recorded plus one. This is because the first track in the user recordable area that remains unrecorded takes this value as the track number.

Next, in step S4, it is judged whether or not the lead-out start time A2 (end time of all tracks) exceeds the maximum recording time. This is to check whether the time code after the track number data is TNO and the track division time X is secured for the track No. TNO does not exceed the maximum recording time of the optical disc. If NO in this case, and if it does not exceed, the process proceeds to step S5 to set the start time of the TNO.sup.th track. Then, in step S6, the track number is incremented (incremented by 1), in the next step S7, X is added to the lead-out start time A2, and the process returns to step S4.

If YES in step S4 and the lead-out start time exceeds the maximum recording time of the disc, the process proceeds to step S8, the lead-out start time A2 is determined as A2-X, and the maximum value is set. The track number is determined by the value of TNO, and the process ends. Here, the number of tracks is a value held as TNO, and the total recording time at that time is A2. The TOC data is created as described above.

If this is executed on the optical disk recorded up to the third track shown in FIG. 2 as described above, the result is as shown in FIG. FIG. 4 shows the start time code of each track in the present invention. From the 4th track to the Nth track, which are not recorded in the user recordable area, the track time is arranged at equal intervals X. At this time, the maximum track number is N, and the lead-out start time is (N-3) .X + TMLAST. Here, the fourth to Nth tracks are not actually recorded in the user recordable area.

Incidentally, in FIG. 3, the track division time set in step S1 is set to a fixed value X having a certain predetermined value. However, if many kinds of this time can be programmable, Usability is improved. To this end, the set time of the track time X is not fixed, but can be freely set by inputting a value to the system control unit 10 by a preset switch or the like (not shown). It will be composed.

Further, in order to display and recognize each selected track time to the operator, the system control unit 1 of FIG.
The data is displayed on the display device from 0 through a display circuit (not shown). Here, the maximum number of tracks N that can be recorded on the optical disk shown in FIG. 4 and the total time (N-
3) ・ Display X + TMLAST.

Although not shown, when the system control unit 10 of FIG. 1 receives a signal indicating that the track times selected by the operator have been fixed, the slide drive circuit 17 is used to slide the slide device. By controlling 18, the optical pickup 3 is moved to a position corresponding to the TOC area of the inner peripheral portion of the optical disc 1, and information indicating the start position of each track is recorded as TOC information. This information is the absolute time of each track calculated by the procedure shown in the flowchart of FIG. 3, which is the data shown in FIG.

Then, the characteristic of the present invention, time information X for tracks which have not yet been recorded but are allocated at equal intervals, the maximum recordable track number N at that time, and this allocation. And the start track number (fifth track in the above example) corresponding to the second table of contents information, T
After the OC recording is completed, the data is recorded on the optical disc. This recording position is the position shown as the data recording area 23 on the inner circumference side from the TOC area in FIG. This information includes time information, the maximum track number, and the assigned second
It suffices to include the starting track number corresponding to the table of contents information. From the 5th track to the Nth track,
It is a set time track at equal intervals.

Taking the example so far, step S in FIG.
Only three data, X (track division time) set in 1, the maximum track number N, and the first track number allocated at equal intervals, may be recorded. Therefore, it is not necessary to record the start time of each track to be recorded in the TOC for each track, and the processing can be performed in a short time for recording or reproducing. Then, these data can be used at the same time as a marking signal indicating that the table of contents information, which is a feature of the present invention, is recorded. It is determined that the TOC area has already been recorded when this data is read by detecting the signal by reproducing the optical disk, and when this data is not detected, it is determined that the TOC area has not been recorded yet.

FIG. 9 shows an example of the recording format of this data. In the figure, the position of the track number is BB. This is a track number that does not exist in the TOC area, user recordable area, and lead-out area. This is the recorded flag of the TOC area. Allocation time (X) 40, maximum track number 41,
In the portion indicated by the allocation start track number 42, the data as described above is recorded. This data is 30
Record about the subcode. If this number is too small, it may not be accurately detected even if it is recorded on the optical disc, so this degree is appropriate.

In this way, recording in the TOC area,
When the recording of the divided time for the remaining user recordable area is completed on the optical disc, it is a write-once CD that can be additionally recorded, but since TOC information is recorded, this is inserted into a read-only CD player. Then, it becomes possible to perform reproduction similarly to the reproduction-only CD. However, since the tracks actually recorded in the user recordable area are up to the third track in the above-mentioned example, the recorded information can be reproduced up to this track. Further, since the additional recordable write-once type CD can still record continuously, additional setting can be performed from the subsequent fourth track by setting it again in the optical disc recording device as described above.

The operation of additional recording will be described with reference to FIG.
The system control unit 10 is a TO of the write-once type CD 1 that is placed.
Check if recording is made in area C. For that purpose, a signal is read from the TOC area of the write-once type CD 1 through the optical pickup 3, the head amplifier 4, the HF signal detection circuit 5, the EFM demodulation circuit 6, and the subcode extraction circuit 7, and the presence or absence of TOC data is checked and judged. To do. When TOC data is recorded, the TO
The C data is reproduced and stored in an internal memory (not shown).

At the same time, in order to check whether or not the division time for the remaining user recordable area is recorded, inside the disk further than the TOC area shown in FIG.
The HF signal is detected in the area shown as the data recording area 23. If there is a signal, it is read.
This information is the data shown in FIG. If this data is recognized, the allocation time X of each track to be recorded from now on and the maximum track number N indicating how much recording is possible
It is possible for the system control unit 10 to recognize and.

However, at this point in time, it is unknown whether or not there is still an area to be recorded on the optical disc. Therefore, next, the marking data area 2 of FIG.
Then, the process proceeds to step 4, and it is judged whether or not the recording is completed up to the lead-out area. In the above-described embodiments, since the recording is still possible from the fourth track onward, the signal in the marking data area 24 is not discriminated. Recording on this area is performed when all recording on the optical disc is completed.

Although the TOC data was recognized and the division time of the unrecorded part was recognized, it is still unknown at this stage how much recording has already been performed on the optical disc. Then, next, it is checked whether or not all of the write-once type CD1 is recorded and the recording is completed. For this purpose, the track number recorded at the end of the user recordable area of the write-once type CD 1 is read, and the track number and the write-once time code are recognized. In the case of the write-once type CD shown in the above example, the last track number of the recorded track is 3, and the write-once time code data is detected as TMLAST. As a result, it is found that the fourth track to the maximum track number TNO of the optical disc recognized by the TOC data are not yet recorded.

Therefore, it is possible to additionally record from the fourth track to the TNO-th track. In addition, here, when this additionally recordable optical disc is mounted, the state of the optical disc is checked in the order of TOC data read, division time and maximum track number data recognition, and additional write subcode recognition. When the number of tracks is large, it takes time to read the TOC data. In the format of the data to be recorded in the TOC, since the start time code information of each track is recorded three times in succession, the time of one subcode is 13.3 milliseconds, so 99 The time required for a truck is 99 × 3 × 13.3 milliseconds, which requires about 4 seconds.

In the present invention, since the area of each track that can be additionally recorded is divided at equal intervals, even if the start time code of each track of the area that can be additionally recorded is not recognized,
By recognizing the allocated time X of each track to be recorded and the maximum track number N indicating how much recording is possible,
There is no need to recognize the start timecode of the tracks divided at equal intervals.

Therefore, the order of checking the state of the optical disk is first the division time and the maximum track number data recognition, then the additional write subcode recognition, and then the TOC data read, and when the TOC data is read, the additional write subcode recognition is performed. It is not necessary to read the start timecode of a track larger than the last track obtained. That is, in the case of this example, since it is not necessary to read the start positions from the first track to the third track and read thereafter, it is possible to finish the state check of the mounted optical disk in a short time.

When the initialization of the mounted optical disk is completed and a recording standby command is input to the system controller 10 from the outside, the previously recognized additional write time code TML is set in order to record the fourth track.
Move the optical pickup 3 to the position corresponding to AST,
Stand by. When the system control unit 10 receives a recording start command from the outside (not shown) from this standby state, recording is started. That is, the sub-code information generated in the system control unit 10 is input from the terminal 12 through the sub-code insertion circuit 11 and the audio signal that has passed through the A / D converter 13 and the signal processing circuit 14 together with the EFM modulation circuit 1
5, recording is performed on the fourth track of the write-once type CD 1 via the laser modulation circuit 16 and the optical pickup 3.

While this recording is being performed, the division time for the read remaining user recordable area, that is, the allocation time of each track, is switched to the fifth track when this time has elapsed. These processes are
The subcode generated by the system control unit 10 in response to the track number switching is output to the subcode insertion circuit 11.

Specifically, the time position for switching the track number from 4 to 5 is switched at the time code position of X + TMLAST. Similarly, during the recording of the sixth track, the subcode is switched to the seventh track this time after the division time X has elapsed from the time of switching to the sixth track. In this way, the user recordable area is divided and recorded in each track after the track division time has elapsed. Further, when it is not necessary to continuously record as it is, the recording may be temporarily stopped at the change point of the track. The point at which the track is switched is the start time of each track, which is the data of the TOC area recorded earlier.

After recording up to the 7th track, the recording is stopped, the optical disk is taken out from the optical disk recording apparatus, and the reproduction-only CD player immediately reproduces the 4th track to the 7th track which have just been additionally recorded. be able to.

As described above, additional recording is performed, and the last number of tracks recorded in the TOC area, that is,
After recording the Nth track, the lead-out track is recorded, and the recording of the write-once optical disc is completed. Then, finally, as a marking (flag) indicating that there is no program area to be recorded up to the lead-out track, this flag is set in the marking data area 24 of FIG. 2 provided on the inner circumference side of the TOC area. Record the signal. The data structure at this time is shown in FIG. Four
At the position of the track number indicated by 3, the track number is CC. In FIG. 9, the flag indicating that the TOC area is recorded and the data at the time of recording are almost the same, but only the track number is different. By checking the presence / absence of this flag recorded on the optical disc, it is possible to immediately determine whether or not recording is possible in the program area.

In the conventional operation mode for recording the TOC area later, even when an optical disk (these two flags are not recorded) in which the user recordable area and the TOC area are completely recorded is inserted, By detecting this flag and the presence / absence of a recorded flag in the TOC area, it is possible to identify whether the optical disc has been completely recorded, or is an optical disc that can be recorded in the program area even if it is recorded in the TOC area. It is possible.

The optical disc capable of additional recording is advantageous in cost. Moreover, such an optical disk recording apparatus improves the usability of the recording apparatus. Furthermore, it is possible to mix tracks in which each track is recorded at free time and tracks allocated at a predetermined time. The present invention is not limited to the write-once CD and can be applied to a recordable type optical disc.

[0054]

According to the configuration and operation of the present invention, the TO
When the C area is already recorded and the optical disc is inserted into the apparatus, it is possible to identify whether the optical disc has been recorded or is a recordable optical disc.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of an optical disc recording apparatus according to the present invention.

FIG. 2 is a radial cross-sectional view seen from the side surface of the disk, showing an example of the area configuration of the optical disk in which the present invention is applied to the write-once CD.

FIG. 3 is a residual user recordable area T according to the present invention.
OC data calculation flowchart.

FIG. 4 is a diagram showing an example of a start time code of each track according to the present invention.

FIG. 5 is a diagram showing details of a TOC area.

FIG. 6 is a configuration diagram of an EFM frame.

FIG. 7 is a configuration diagram of a subcode Q in a program area and a lead-out area.

FIG. 8 is a configuration diagram of a subcode Q in the TOC area.

FIG. 9 is a format configuration diagram of a recorded flag in the TOC area.

FIG. 10 is a format configuration diagram of a recorded flag in a lead-out area.

[Explanation of symbols]

 1 optical disk (write-once type CD) 2 spindle motor 3 optical pickup 4 head amplifier 5 HF signal detection circuit 6 EFM demodulation circuit 7 subcode extraction circuit 8 demodulation circuit 9, 12 terminals 10 system control unit 11 subcode insertion circuit 13 A / D Converter 14 Signal processing circuit 15 EFM modulation circuit 16 Laser modulation circuit 17 Slide drive circuit 18 Slide device 19 Optical disc sensor

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[Procedure amendment]

[Submission date] June 25, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

According to this method, when the optical disc which is being recorded is inserted into a general reproduction-only CD player, the table of contents information can be recognized because it is already recorded in the predetermined table of contents area. You can play the track that you made.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

The timetable information at equal intervals can be recorded on the optical disc, and the information can be reproduced from the optical disc. Sub-code information can be added at the time of recording a signal in the remaining user recordable area based on the time interval information at equal intervals for allocating the remaining user recordable area.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction content]

Then, the characteristic of the present invention, time information X for tracks which have not yet been recorded but are allocated at equal intervals, the maximum recordable track number N at that time, and this allocation. And the start track number (the fourth track in the above example) corresponding to the second table of contents information, T
After the OC recording is completed, the data is recorded on the optical disc. This recording position is the position shown as the data recording area 23 on the inner circumference side from the TOC area in FIG. This information includes time information, the maximum track number, and the assigned second
It suffices to include the starting track number corresponding to the table of contents information. From the 5th track to the Nth track,
It is a set time track at equal intervals.

Claims (1)

[Claims] 1. A means for recording a plurality of recording signal blocks in a user recordable area of an optical disc, and a means for recording table of contents information indicating the recording position of each recording signal block in a predetermined area outside the user recordable area. Means for allocating the first table-of-contents information of each recording signal block already recorded before the completion of recording the recording signal to the user recordable area and the remaining user recordable area of the optical disc to the plurality of signal blocks at equal intervals. Means for recording the second table-of-contents information allocated in 1. in a predetermined area for recording the table-of-contents information, and means for recording the allocated equally-spaced time information in a predetermined area of the optical disc and a means for reproducing the same. And a means for recording a marking for indicating that the table of contents information has been recorded on the optical disc, and a table of contents by means for detecting the marking. A means for discriminating whether information is recorded or not and recording sub-code information on the optical disc based on the time information at the equal intervals when recording the recording signal block in the remaining user recordable area is provided. Having, as the table of contents information, when recording of all recorded recording signal blocks is completed, it is recorded by means of recording a block indicating the end of the recording signal block, and at the same time, recording of all user recordable areas is completed, The recording of the recording signal block is completed by the means for recording the marking for indicating that the block indicating the end of the recording signal is recorded on the optical disc, and recording by the means, and the means for detecting the recording. An optical disk recording device characterized by identifying whether or not it is.