JPH06302156A - Optical disk recording device - Google Patents

Abstract

PURPOSE:To identify whether an optical disk on which the recording is completed or the disk on which one can still records in a user recordable region even if index information is recorded by providing various detecting means for detecting the information such as the presence or absence of the index information. CONSTITUTION:In additional recording operation, a system control part 10 checks whether or nor recording is done in the TOC area ( table of contents recording area) of a mounted recordable CDI and detects the recorded flag signal of the TOC area when the index information is detected. Then, when the flag is not detected, reproduces TOC data through an optical pickup 3, a head amplifier 4, a HF signal detecting circuit 5 and EFM demodulator circuit 6, etc., and stores it in the part 10. When the recorded flag is recorded, whether or not the recorded flag of a read out area is recorded is checked and, when it is not recorded, the fact that the TOC area is already recorded and the user recordable area is recordable up to a prescribed number of tracks is discriminated.

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 optical disc media have been actively conducted, and recordable optical discs have been developed. A recordable optical disc is of a type in which recording pits are formed by deforming the recording film or burning the recording film by heat generated by irradiation with laser light,
What is called a write-once type (DRAW) that can be recorded only once and cannot be erased, and similarly, a laser beam is used as a light source, and an external magnetic field is applied from the opposite position to the optical disk to change the direction of perpendicular magnetization of the recording film There is a type in which information is recorded by changing it, and a rewritable type (erasable-DRAW, magneto-optical type) in which recording and erasing can be repeated.

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.

Further, there are the following conventional techniques. An operation mode (AFTER-TOC mode) for later recording the TOC data (table of contents information) as described above.
A recordable CD that has been recorded in the user recordable area and has not been recorded in the TOC area yet.
It has been impossible to reproduce the CD with a general reproduction-only CD player.

Therefore, the table of contents information (TOC data) is recorded before the user recordable area is recorded.
Based on the TOC data recorded in advance, a method of recording the user recordable area on each track is
It is proposed in JP-A-3-100983. According to this proposal, the TOC data is set in advance in order to make a recordable CD in the middle of which the recording in the program area, which is the user recordable area, has not been completely recorded so that it can be used even in a read-only CD player. It was something to record. That is, in a reproduction-only CD player, this TO
If the information in the area C is read and the start position of each track is not recognized, reproduction cannot be performed. Moreover, since this information must be recognized first when the optical disc is inserted into the apparatus, a disc read error occurs if the TOC data is not recorded here. Pre-recording the TOC data prevents this error.

[0007]

However, in the operation mode (AFTE) in which TOC data (table of contents information) is recorded later.
In the R-TOC mode), recording on the user recordable area is performed, but recording on a recordable CD that has not yet been recorded on the TOC area or recording on the user recordable area is not completed. Even if the recordable CD is in the middle of recording, a recordable CD (PRE-TO) in which TOC data has already been recorded in advance in the TOC area in order to make it usable by the read-only CD player.
C mode), and further, recordable CDs (optical discs) in four kinds of recording states, each of which is a recordable CD that has been completely recorded in each operation mode, are inserted into the device and classified. It was impossible to recognize.

Therefore, for example, the optical disk recording apparatus is
When operating in FTER-TOC mode, PRE
-When the TOC area is recorded in the -TOC mode and a recordable optical disc is set, it is erroneously determined that the recording is completed. Similarly, in the optical disk recording device operating in the PRE-TOC mode, an optical disk in which the TOC area is not yet recorded and some is recorded in the user recordable area, that is, the AFTER-TO
When an optical disc recorded in C mode is inserted,
After all, there is a problem of making an erroneous judgment, and the two operation modes cannot coexist in the device, which is inconvenient.

[0009]

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. Means for recording in a predetermined area outside the recordable area, means for detecting the presence or absence of table of contents information, means for recording first instruction information indicating that the table of contents information has been recorded on the optical disc,
A means for detecting the first instruction information, a means for recording second instruction information, which indicates that recording of the recording signal block is impossible when the recording of the recording signal block recorded as the table-of-contents information is completed, on the optical disc, And means for detecting the instruction information. Further, the optical disk recording apparatus according to the present invention comprises means for detecting the presence or absence of the table of contents information, means for detecting first instruction information indicating that the table of contents information has been recorded, and recording of the recording signal block. A means for detecting whether or not a recordable area of the recording signal block of the optical disc remains by means of detecting the second instruction information indicating the impossibility. Also,
The optical disc recording apparatus according to the present invention performs the recording of the table-of-contents information after recording the recording signal block according to the identification result obtained from the means for identifying whether or not the recordable area of the recording signal block of the optical disc remains. A device having means for determining whether the operation mode is one operation mode or a second operation mode in which the table information is recorded before recording the recording signal block, and a means for operating in the operation mode determined by the determining means Is. Further, the optical disk recording apparatus according to the present invention is arranged such that the table of contents information of each recording signal block recorded up to that time and the optical disk of the optical disk are recorded by the operation mode switching command during the operation in the first operation mode in which the recording of the table of contents information is performed after the recording of the recording signal block. It has means for recording the remaining user recordable area and the table-of-contents information allocated to a plurality of signal blocks in a predetermined area outside the user recordable area, and after the recording, it switches to the second operation mode and operates. It is equipped with means.

[0010]

With each of the detections, the means for detecting the presence or absence of the table-of-contents information, the means for detecting the information indicating that the table-of-contents information has been recorded, and the means for detecting the information indicating the recording addition of the recording signal block are detected. , Identify the recording state of the optical disc. Further, these pieces of information can be recorded on the optical disc according to the recording state of the optical disc. Further, by these means, it is possible to identify whether or not the area where the block can be recorded remains on the optical disc.

Further, in order to determine the operation mode in the apparatus, the operation is performed in the operation mode according to the recording state of the optical disk until then. Further, since the operation mode switching command is provided even during operation in the operation mode (AFTER-TOC mode) in which the table of contents information is recorded later,
The table-of-contents information of each recording signal block recorded up to that point and the table-of-contents information in which the remaining user recordable area of the optical disc is allocated to a plurality of signal blocks are recorded in a predetermined area (TOC area) outside the user recordable area. Is
The operation mode can be switched to the PRE-TOC mode for operation.

[0012]

[Embodiment] In this embodiment, a recordable type CD which is a recordable type optical disk will be described as a system configuration. The recordable CD includes a write-once CD (called CD-R, DRAW, etc.) that can be recorded once and cannot be erased, and a rewritable type (erasable-DRAW, magneto-optical) that can repeatedly record and erase by a magneto-optical method. There is something called. TOC contents are TOC according to the CD standard.
This is called (Table of Contents) information.
The optical disc recording device based on the standard of the CD format exemplified here is a CD-DA, a CD-ROM, a CD.
It is applied when recording and creating discs corresponding to various CDs such as -V and CD-I.

FIG. 1 shows a block diagram of an embodiment of an optical disk recording apparatus according to the present invention. In FIG. 1, an optical disc 1 which is a recordable CD is rotationally 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 recordable CD 1 is read by the optical pickup 3, and the head amplifier 4 and the HF signal detection circuit 5 are read.
Via the EFM demodulation circuit 6. The output signal from the EFM demodulation circuit 6 is applied to the system control unit 10 via the subcode extraction circuit 7, and the demodulation circuit 8 is also added.
The music signal read through is demodulated and output to the terminal 9 as a reproduction signal.

At the time of recording on the optical disc 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 unit 10, and a slide device 18 is supplied via 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 recordable CD1 mounting detection output signal from the optical disc sensor 19 are applied to the system control unit 10, respectively. In the recordable 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. FIG. 2 shows the structure of one EFM frame. The signal to be recorded is 58 for 1 EFM frame.
It is composed of 8 channel bits, and in order from the left, an EFM frame pattern for synchronization, a sub code, audio data (CDROM-data), and an error correction code. The EFM frame pattern for synchronization is a synchronization signal for identifying the EFM frame. The subcode is
It 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 tune and the middle of the tune. In Figure 3, 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 recordable CD 1 is in an unrecorded state. In this case, the operation mode of the apparatus is that the TOC data is recorded after the user recordable area is recorded.
It is the AFTER-TOC mode. This recordable CD
FIG. 5 shows an area structure in which the present invention is applied to a recordable type CD when recording on the disk 1 as a radial sectional view as seen from the side surface of the disk. Here, make the TOC area 20 an empty area,
Recording (recording) is started from the innermost circumference of the user recordable area 21, which is outside the TOC area 20. Details of the TOC 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.

At this time, the first track number to be recorded is 1, and 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 by 33 in FIG. 8 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 for the third track, 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. 4, 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.

Now, however, this recordable CD
In the state of, since the TOC area has not been recorded yet,
It is impossible to reproduce a 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, and in order to enable the additional recording in the area where the recording area still remains, this is realized by the control operated according to the flowchart shown in FIG. is doing.

Therefore, first, in FIG. 1, the system control unit 10 inputs an operation mode switching command from the terminal 20. This operation mode switching command is issued from the operation mode of the device which has been the AFTER-TOC mode until now.
It is to switch to the RE-TOC mode. That is, the table of contents information is recorded in the TOC area so that the remaining recorded user recordable area can be further recorded and the already recorded track can be reproduced by the CD player.

FIG. 6 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 index information assigned here becomes the index information of each track in the remaining user recordable area. 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
When recording on the optical disc 1 in the future, the time information allocated at the equal intervals, the maximum track number at that time, and the start track number of the allocated table of contents information are set. As will be described later, the three pieces of information are recorded at a specific position on the optical disk, 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 end the track within this maximum recordable time (that is, within A2) and set the lead-out track outside the last track. Therefore, the time is set and recognized so as not to exceed this time. There is a need.

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 here, and if it does not exceed, move to step S5 and set the start time of the TNO.
Set it as A2-X. Then, step S6
Then, the track number TNO is incremented (incremented by 1), and in the next step S7, the lead-out start time A2
X is added to 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 of FIG. 5 as described above, the result is as shown in FIG. FIG. 7 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.

In FIG. 6, the track division time set in step S1 is set to a fixed value X having a certain predetermined value. However, if many types 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. 7 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. 6, which is the data shown in FIG. 7.

Regarding the format of TOC data,
Encoding is performed by the subcode Q, and each data at that time is as shown in FIG. And this TO
When the TOC data is recorded in the C area, next,
An information signal (marking) indicating that recording (recording of table-of-contents information) in the TOC area, which is a feature of the present invention, is performed is recorded on the optical disc. The reason for recording this information will be described later. Now, to give an example of the format of this data, the subcode Q is used like the TOC data and the information of each track.

FIG. 9 shows an example of the recording format of this data. In the figure, the track number position 43 is
Let's call it BB. This value 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. The allocated time (X) 40 is time information (X in the above example) for tracks in which the remaining user recordable areas are allocated at equal intervals, and the maximum track number 4
1 is the maximum track number that can be recorded at that time (N in the above example), and the allocation start track number 42 is
This is the start track when allocated (the fourth track in the above example).

The fourth track to the Nth track are tracks having set intervals at equal intervals. These three types of information, the information indicating that the TOC area has been recorded, and the track BB are recorded on the optical disc. The three pieces of information are used later when they are recorded in the remaining user recordable area of this optical disc. The position at which the recorded flag of the TOC area shown in FIG. 9 is recorded is the position shown as the data recording area 23 in FIG. Then, about 30 subcodes of this data are recorded. 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,
After the recording of the recorded flag (marking information) to the TOC area is completed, a recordable type C that can be additionally recorded
Although it is D, since TOC information is recorded, it is possible to set this in a reproduction-only CD player and reproduce it in the same manner as a 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. Furthermore, since the recordable type recordable CD which can be additionally recorded can be continuously recorded, if it is set again in the optical disc recording apparatus as described above, additional recording can be performed from the subsequent fourth track.

The operation of additional recording is shown in the configuration diagram of FIG. 1 and FIG.
The recording state check and the operation mode determination of the optical disc according to the present invention will be described below. In FIG. 11, first, in step S11, it is checked whether or not the table of contents information is recorded in the TOC area (table of contents recording area) of the mounted optical disc. That is, the system control unit 10
Checks whether or not data is recorded in the TOC area of the recordable CD 1 placed.

If it is determined in step S11 that there is no table-of-contents information (NO), the process proceeds to step S19. In step S19, there are a case where the optical disc has no TOC recorded therein and no recording is performed in the user recordable area at all, and a case where there is no TOC recorded and a portion is recorded in the user recordable area. . Therefore, here, a point for performing additional recording on the recordable CD 1 is searched for.

For this purpose, the last recorded part of the user recordable area of the recordable CD 1 is reproduced, and the track number data of the subcode Q is reproduced to recognize the track number and the additional time code. You can Then, the process proceeds to step S20, and this recordable type C
In the case of D1, the TOC area is unrecorded, so
The operation mode of the optical disk recording device is AFTER-TOC.
Set as mode.

If the table of contents information is detected in step S11 (YES), the process proceeds to step S12 and the TO
The recorded flag signal of the C area is detected. The reason for this is that even if the TOC area is recorded, the PRE-
Since there are cases where the recording area remains in the optical disc recorded in the TOC mode, there is a case where it is a read-only CD, and there is a case where the recording is completed in the AFTER-TOC mode, these are identified. It is necessary. When the recording is completed in the AFTER-TOC mode, the recorded flag of the TOC area and the recorded flag of the lead-out area have not been recorded in the related art. Therefore, the present embodiment is also based on the conventional method. .

When the recorded flag of the TOC area is not detected in step S12 (NO), the process proceeds to step S17. In step S17, the TOC data is read because it is the case of the recordable CD or the read-only CD in which all recording is completed. That is, FIG.
The optical pickup 3 is moved to a position corresponding to the TOC area of the recordable CD 1, and the signal is transmitted from the optical pickup 3 through the head amplifier 4, the HF signal detection circuit 5, the EFM demodulation circuit 6, and the subcode extraction circuit 7. Read, T
The OC data is reproduced and stored in a memory inside the system control unit 10 (not shown).

In FIG. 11, when the TOC data has been read in step S17, the process moves to step S18, and this optical disk (recordable CD) is recognized as a recording completed disk. It should be noted that this recording completed disc includes a reproduction-only disc.

When the recorded flag of the TOC area is recorded in step S12 (in the case of YES)
To move to step S13. In step S13, it is checked whether or not the recorded flag of the lead-out area is recorded. This means the presence / absence check of the recording addition flag (recording addition flag to the program area) of the recording signal block. That is, here, when this flag is detected, the flag is recorded when the recording of all the user recordable areas is completed in the PRE-TOC mode.

Therefore, in step S13, when the recorded flag of the lead-out area is recorded (YES
In this case), the process proceeds to step S17, and recording is not performed on this optical disc (recordable CD), but only reproduction is performed.
That is, in step S17, since it is the case of the recordable type CD or the read-only CD in which all recording is completed, the TOC
Read the data. When the TOC data has been read in step S17, the process proceeds to step S18, and this optical disk (recordable CD) is recognized as a recording completed disk. It should be noted that this recording completed disc includes a reproduction-only disc.

In step S13, if the lead-out recorded flag is not recorded (NO), the process proceeds to step S14. In step S14, TO
Read C data. In the case of coming after this step S14, the TOC area has already been recorded, and the recording is not completed up to the number of tracks recorded in the TOC in the user recordable area. Therefore, recording can be performed on this optical disk (recordable CD).

However, in this embodiment, the remaining user recordable area is set so that the elapsed time of each track is equal. When the presence or absence of the recorded flag in the TOC area is detected in the previous step S12 and the subcode Q is read when it is detected, the information can be recognized in the above-mentioned format. That is, it is the information of the track allocation time 40, the maximum track number 41, and the allocation start track number 42 in the format shown in FIG. Therefore, in step S14, it is sufficient to recognize the start time codes of the tracks before the allocation start track, without recognizing the start time codes of all the tracks.

This takes time when the number of tracks in TOC data read is large. The format of the data to be recorded in the TOC is that the start time code information of each track is recorded three times in succession, so that the time of one subcode is 13.3 milliseconds. In the case of 99 tracks, it takes 99 × 3 × 13.3 milliseconds, which takes about 4 seconds.

When the TOC area is recorded and the remaining user recordable area can be recorded as in the present embodiment, the areas of each track that can be additionally recorded are divided at equal intervals. Even if the start time code of each track in the additionally recordable area is not recognized, the allocation time of each track to be recorded, the maximum track number indicating how much recording is possible, and the allocation start track number are reproduced and recognized. If so, there is no need to recognize the start time code of each track divided at equal intervals.

Therefore, in summary from the above, in the TOC data read in step S14, it is sufficient to recognize the start time codes corresponding to the tracks less than the allocation start track number obtained in FIG. Can be processed.

Next, the process proceeds to step S15, and points for additional recording in the user recordable area are searched. Next, in step S16, the operation mode of the optical disc recording apparatus is set to the PRE-TOC mode.

The TOC data is recorded and the recorded flag of the TOC area is already recorded, but the recording of the lead-out area is performed. The completed flag is not recorded. Then, from the recorded flag in the TOC area, the allocation time X of each track to be recorded from now on, the maximum track number N indicating how far recording is possible, and the track allocation start track number, that is, No. 4, are recognized.

Then, the additional recording point is the third track, and the time code is detected as TMLAST. Therefore, it is found that the recording from the fourth track to the TNO-th track is not yet recorded.
Then, the operation mode of the device becomes the PRE-TOC mode. Further, at the time of reading the TOC data, it is not necessary to read the start positions from the first track to the third track and read thereafter, so that the status check of the mounted recordable CD 1 can be completed in a short time. .

Continuing with this example, when the initialization of the recordable CD 1 mounted is completed and a recording standby command is input from the outside to the system control unit 10 of FIG. In order to perform recording standby, the optical pickup 3 is moved to a position corresponding to the previously recognized additional recording time code TMLAST, and the recording standby is performed. 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 subcode information generated by the system control unit 10 is passed through the subcode insertion circuit 11 to the terminal 12
From the A / D converter 13 and the signal processing circuit 14, and the EFM modulation circuit 15 and the laser modulation circuit 16 and the optical pickup 3 to record on the fourth track of the recordable CD 1. Done.

While performing this recording, the division time for the read remaining user recordable area, that is, this is the allocation time of each track, so when this time elapses, the track is switched to the fifth track. 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.

The time position at which the track number is switched from 4 to 5 is specifically 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 that have just been additionally recorded. be able to.

As described above, the additional recording is performed, and the last track number recorded in the TOC area, that is,
After recording up to the Nth track, the lead-out track is recorded, and the recording of the recordable optical disk 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. Record the signal. The data structure at this time is shown in FIG.

At the position of the track number indicated by 43,
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. As described in the flowchart of FIG. 11, by checking the presence or 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 AFTER-TOC mode (operation mode in which the TOC area is recorded later), the optical disk (the two flags are not recorded) in which the user recordable area and the TOC area are completely recorded Even if it is inserted, by detecting this flag and the presence or absence of the recorded flag in the TOC area, even if the recording is completed in the optical disc or in the TOC area, the user recordable area (program area) In (), it is possible to identify whether the optical disc is recordable.

Further, even for a recordable type CD which is not recorded on the optical disc, it is possible to reproduce a plurality of already recorded tracks with a general reproduction-only CD player. An optical disk that can be additionally recorded is advantageous in terms of 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.

Further, the recording state of the optical disc inserted in the device can be identified, and the operation mode of the optical disc recording device according to the recording state of the optical disc can be determined and switched. This allows the operator to perform the operation without being conscious of the recording consciousness.

[0065]

According to the configuration and operation of the present invention, the TO
When the C area is already recorded and the optical disk is inserted into the device, it is possible to identify whether the optical disk has been completely recorded, or whether the optical disk can be recorded in the user recordable area even if the table of contents information is recorded. it can.

[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 configuration diagram of an EFM frame.

FIG. 3 is a configuration diagram of a subcode Q in a program area and a lead-out area.

FIG. 4 is a configuration diagram of a subcode Q in the TOC area.

FIG. 5 is a radial sectional view seen from the side of the disc, showing an example of the area configuration of the optical disc in which the present invention is applied to a recordable CD.

FIG. 6 is a residual user recordable area T according to the present invention.
OC data calculation flowchart.

FIG. 7 is a diagram showing an example of a start time code of each track according to the present invention.

FIG. 8 is a diagram showing details of a 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.

FIG. 11 is a flowchart for checking the recording state of an optical disc and determining the operation mode according to the present invention.

[Explanation of symbols]

1 ... Optical disc (recordable 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, 20 ... Terminal 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

[Name of item to be corrected] Claim 2

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

Claims (4)

[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. And means for detecting the presence or absence of the table-of-contents information, and means for recording the first instruction information indicating that the table-of-contents information has been recorded on the optical disc,
A means for detecting the first instruction information, a means for recording second instruction information, which indicates that recording of the recording signal block is impossible when the recording of the recording signal block recorded as the table-of-contents information is completed, on the optical disc, And a means for detecting the instruction information of the optical disc recording apparatus. 2. A means for detecting the presence or absence of the table-of-contents information, a means for detecting first instruction information indicating that the table-of-contents information has been recorded, and a second indication indicating that the recording signal block cannot be recorded. 2. The optical disk recording apparatus according to claim 1, further comprising means for identifying whether or not a recordable area of a recording signal block of the optical disk remains by means for detecting the instruction information. 3. The recording of the table-of-contents information after the recording of the recording signal block is performed according to the identification result obtained from the means for identifying whether or not the recordable area of the recording signal block of the optical disc according to claim 2 remains. A means for deciding whether the operation mode is one operation mode or a second operation mode in which the table information is operated before recording the recording signal block; and a means for operating in the operation mode determined by the deciding means. The optical disk recording apparatus according to claim 2, wherein 4. The table of contents information of each recording signal block that has been recorded by the operation mode switching command during the operation in the first operation mode in which the recording of the table of contents information is performed after the recording of the recording signal block, and the remaining user recordable area of the optical disk. And a means for recording the table-of-contents information in which is allocated to a plurality of signal blocks in a predetermined area outside the user recordable area, and after the recording, means for switching to the second operation mode and operating. The optical disk recording device according to claim 3, wherein