JPH0746474B2 - Information recording / reproducing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording / reproducing data on / from an optical disc having a track structure having a storage area of a plurality of sectors.

2. Description of the Related Art Conventional information recording / reproducing apparatuses include a reproduction-only information recording / reproducing apparatus for reproducing information on a reproduction-only recording medium and a recording / reproducing information recording / reproducing apparatus for recording / reproducing information on a recordable / reproducible recording medium. Exists.

In the former read-only information recording / playback device, a read-only optical disc (hereinafter referred to as R / O disc) in which data is recorded in the shape of uneven pits on a disc-shaped plastic substrate
Then, the data is reproduced by irradiating the laser beam. This device does not have a recording means, and the R /
O Play the disc. The R / O disk is a disk for recording dictionaries and font patterns for word processors, or a disk for storing programs and manuals because of its large capacity, random access property, and easy mass copying and low price. The use of is devised.

On the other hand, in the latter recording / reproducing type information recording / reproducing apparatus, a recording optical disc (hereinafter referred to as a W-capable disc) is a device capable of recording / reproducing data by irradiating a laser beam to the recording means and the reproducing means. To have. W-enabled disc also
Similar to R / O disks, it has a large capacity and the property of random access, and it can record data that cannot be done with R / O disks. It is considered to be used.

Problems to be Solved by the Invention However, since the above R / O discs are read-only and manufactured in a dedicated factory, the user is required to change / add various data supplied by the R / O discs. It is impossible to do. In addition, the data targeted by the computer is frequently changed, and it is burdensome for the user to purchase an R / O disk each time, and the R / O disk supply side also changes the R / O disk every time. Must be created. Therefore, since the R / O disk can handle only fixed and stationary data, there is a problem that its use in a computer is limited.

On the other hand, the W-capable disc described above does not have the problem that recording cannot be performed like the R / O disc described above, but it takes a lot of time when a large number of recording media having the same content are duplicated. Had.

The present invention has been made in view of the above problems, and an object thereof is to provide an information recording / reproducing apparatus that allows a user to change / add data to a duplicated R / O disk.

Means for Solving the Problems The present invention relates to address reading means for reading sector address information from a sector identification portion, address comparison means for comparing sector address information of the sector identification portion with a target sector address, and sector identification portion. From the sector identification flag detecting means, the reproducing means for reproducing the read-only data portion, the recording / reproducing means for recording / reproducing the recordable data portion, and the detection obtained from the sector identification flag detecting means. The sector type is known based on the information. In the read-only / recordable area mixed type sector, the read-only data section and the recordable data section are recorded / reproduced, and the recordable area single-type sector The information recording / reproducing apparatus is provided with control means for controlling the recording / reproducing.

With the above-described configuration, the present invention has a read-only / recordable area mixed type sector having a sector identification section, a reproduction-only data section, and a recordable data section, and a recordable area having a sector identification section and a recordable data section. A storage medium composed of a single type sector, or a storage medium composed only of the read-only / recordable area mixed type sector, wherein sector address information and the read-only / recordable area mixed type sector or the record For an information recording medium having a sector identification flag for identifying whether the sector is a single possible area sector, the sector type is read-only based on the sector identification flag of the sector identification section obtained from the sector identification flag. If the sector is a recordable area mixed type sector, the reproduction-only data part of the target sector detected by the address match output of the address comparison means is reproduced. Then, recording / reproduction of the recordable data portion is performed, and in the case of the recordable area single type sector, recording / reproduction of the recordable data portion of the target sector detected by the address coincidence output of the address comparison means is controlled.

Embodiment FIG. 1 is a block diagram of an information recording / reproducing apparatus according to an embodiment of the present invention. In FIG. 1, the address reading means 10
0 is a means for reading an address from a signal (this signal is a sector identification portion reproduction signal 112) obtained by reproducing a sector identification portion (having an address and a sector identification portion flag) in a sector, and 113 is read by the address reading means 100. Similarly to the address reading means 100, the reproduced address signal and sector identification flag detection means 101 for detecting the sector identification flag from the sector identification portion reproduction signal 112, and 115 for the sector identification flag detected by the sector identification flag detection means 101 The flag signal / address comparing means 102 receives the input target address signal 111
Means for comparing the reproduced address signal 113 with the reproduction address signal 113 to determine whether or not there is a match, 114 is an address match signal indicating the match of the addresses output by the address comparison means 102, and the control means 10
3 is the input write signal 116 or read signal 11
7 as the recording / reproducing request instruction signal, based on the sector identification flag signal 115 of the sector in which the address coincidence signal 114 is output, the reproduction request signal 118 is output to the reproducing means 104, or
The reproduction request signal 11 from the control means 103 is a means for controlling the output of the recording request signal 119 to the recording means 105.
8, a means for instructing the laser drive 106 to reproduce the data, outputting the reproduction result as a reproduction data signal 120, and a means for instructing the laser drive 106 to reproduce the sector identification portion of each sector, and the recording means 105 are control means. Means for instructing the laser drive 106 to record a recording data signal 112, which is input data from the outside, by a recording request signal 119 from 103, 106 is a reproducing means 104 and a recording means 105.
Is a laser drive for driving the semiconductor laser 107 based on an instruction from. An information storage medium 108 is irradiated with the laser beam from the semiconductor laser 107, and has a read-only / recordable area mixed type sector 109 and a recordable area single type sector 110 therein.

FIG. 2 shows an optical disk applied in one embodiment of the present invention, FIG. 2a is a plan view of the optical disk, and FIG.
Is a partially enlarged view of sector S1 of the optical disk, FIG. 2c is a partially enlarged view of sector S11 of the optical disk, and FIG.
FIG. 2e is a sectional view taken along the line CC of FIG. 2b and FIG. 2c. In FIG. 2, 20 is an optical disk, 21 is a center hole for mounting the optical disk in the disk mode, S1, S2, ..., Sn, S11, S12 ,.
Is a sector, ID ₁ , ID ₂ , ..., IDn, ID11, ID12, ..., I
D1n are sectors S1, S2, ..., Sn, S11, S12, ...
…, S1n address information and sector identification section in which sector identification flag is recorded, 22 is a read-only data section, 23 is a recordable data section, 24 is a disk base material such as polycarbonate resin, and 25 is a groove shape on the disk base material 24. Formed track,
25a is a reproduction-only data area, 25b is a recordable data area,
26 is a light-sensitive recording member in which a signal is written by laser light,
27 is a protective layer for protecting the photosensitive recording member 26. The sectors S1, S2, ..., Sn are the read-only / recordable area mixed type sectors, and the sectors S11, S12 ,.
Recordable area This is a single type sector. Here, the read-only / recordable area mixed type sector and the recordable area single type sector do not have to be adjacent to each other, nor do they have to be on the same track.

The optical disc 20 has a groove-shaped track 25 divided into a plurality of sectors S each including a sector identification portion ID including address information and a sector identification flag, and a data portion including a read-only data portion 22 and a recordable data portion 23. A light-sensitive recording member 26 is formed on a disk substrate 24, and a light-sensitive recording member 26 is evenly deposited on the entire surface of the optical disk.

In the read-only data section 22 and the sector identification section ID, the photosensitive recording member 26 functions as a reflective film that reflects the reading laser beam of weak intensity.

On the light-sensitive recording member 26 of the recordable data section 23, a signal is recorded in the form of change in reflectance or formation of holes by irradiation with recording laser light of high intensity. When the photosensitive recording member 26 is a magneto-optical material, the recording signal can be read by reversing the magnetic domain and rotating the polarized wave front of the reflected light due to the Faraday effect. As for recording, both write-once recording and erasable recording are possible.

As described above, according to the optical disc of the present embodiment, by forming the same photo-reactive recording member 26 in the read-only data section 22 and the recordable data section 23, the read-only area and the recordable area are divided into one sector. Facilitates the manufacture of optical discs inside.

FIG. 3 is an explanatory diagram of the sector identification flag FLG of the sector identification portion ID of the optical disc in the above embodiment. Figure 3a
Is a sector format of a read-only / recordable area mixed type sector, FIG. 3b is a sector format of a recordable area single type sector, and FIG. 3c is an address ADR of a read-only / recordable area mixed type sector. , Sector identification flag FLG
1. Specific embodiment of error detection code CRC, FIG. 3d
Is a specific example of the address ADR of the recordable area single type sector, the sector identification flag FLG2, and the error detection code CRC.

In the sector identification section ID, PR is a preamble for clock reproduction, AM is an address mark indicating the start of address information, ADR is an address, FLG1 is a sector identification flag indicating that the sector is a read-only / recordable area mixed type sector, FLG2 is a sector identification flag indicating that it is a recordable area single type sector, CRC is an error detection code such as a cyclic code, PO is a postamble, and G1, G2, and G3 are information recording for absorbing optical disc rotation fluctuation. It is a gap that has not been done.

In the read-only data section of the read-only / recordable area mixed type sector, SYNC is a clock synchronization signal, DM is a data mark indicating the beginning of data, DATA is data, and ECC is an error detection / correction code.

The ADR is composed of 2 bytes of track address information (track address (high byte) TA.H, track address (low byte) TA.L) and sector address information SA.

FIG. 4 is an enlarged sectional view of a track of the optical disc of the above embodiment. FIG. 4a is a partially enlarged view of the sector identification part ID of the read-only / recordable area mixed type sector, the gap G1, the read-only data part, the gap G2, and the recordable data part, and FIG. FIG. 6 is a partially enlarged view of a sector identification part ID, a gap G1, and a recordable data part of a single feasible area type sector.

In FIG. 4, the read-only / recordable area mixed type sector and the recordable area single type sector are both light-sensitive recording members.
40 is formed, and each sector identification section ID has sector address information formed with uneven pits 41. In addition, the read-only data section of the read-only / recordable area mixed type sector is the sector identification section. Similar to the ID, data is recorded in the uneven pits 41. Both the recordable data area RAM1 of the read-only / recordable area mixed type sector and the recordable data area RAM2 of the recordable area single type sector are grooves of uniform depth, and the data recorded by the user changes in shade. Photosensitive recording member 40 as dots 42 for reversing magnetic domains or forming holes
Recorded in.

Since the same light-sensitive recording member 40 is formed in the read-only data area ROM and the recordable data area RAM1, a reflective layer such as aluminum is provided in the read-only data area and the light-sensitivity is provided in the recordable data area as in the conventional case. Since it is not necessary to separately form the recording member, it is not necessary to provide a buffer section for recording no data at the boundary between the read-only data section ROM and the recordable data section RAM1.

Regarding the information recording / reproducing apparatus of the present embodiment configured as described above in FIG. 1, while using the embodiment (FIGS. 2 and 3) of the information storage medium applied to the apparatus of the present embodiment,
The operation will be described below.

First, the reproducing means 104 reads the sector identification section ID of each sector (reproduction-only / recordable area mixed type sector 109, recordable area single type sector 110) on the optical disk (information storage medium 108) with laser light. , The sector identification portion reproduction signal 112 is analyzed by the address reading means 100, and the reproduction address signal 113 is output to the address comparing means 102. The address comparing means 102 outputs the target address signal 1 which is an external input.
12 is compared with the reproduction address signal 113, and if they match, an address match signal 114 is output to the control means 103. Also,
The sector identification flag detecting means 101 analyzes the sector identification portion reproduction signal 112, detects the sector identification flag FLG as FLG1 = 1 or FLG2 = 0 as shown in FIGS. 3c and 3d, and detects it. The result is output to the control means 103 as a sector identification flag signal 115. Based on the address coincidence signal 114, the sector identification flag signal 115, the write signal 116 and the read instruction signal 117 which are request instruction signals from the outside, the control means 103 performs recording / reproduction of the information storage medium 108.

The operation of the control means 103 in the case of reproduction will be described below. Based on the sector identification flag of the target sector detected by the sector identification flag detection means 101, the control means 103, in the case of the read-only / recordable area mixed type sector 109 in which FLG has the value 1, is read-only in the sector. Reproduction of the data part ROM, or reproduction and analysis of the recordable data part RAM1 in the sector, and in the case of the recordable area single type sector 110 in which FLG has a value O, reproduction and analysis of the recordable data part RAM2 in the sector Do. In the reproduction processing of the target sector, the reproduction request signal 118 for requesting reproduction is output from the control means 103 to the reproduction means 104. Next, the operation of the control means 103 at the time of recording is such that in the case of the read-only / recordable area mixed type sector 109 in which the sector identification flag FLG of the target sector has the value 1, recording to the recordable data area RAM1 in the sector is performed. In the case of the recordable area single type sector 110 in which FLG has a value of 0, recording is performed in the recordable data area RAM2 in the sector. In the recording process of the target sector, the control unit 103 outputs a recording request signal 119 requesting recording to the recording unit 105.

The reproduction means 104 has a reproduction request signal 11 from the control means 103.
In response to the data, the laser drive 106 is instructed to reproduce the data, and the reproduction result is output to the outside as the reproduction data signal 120. Further, the laser drive 106 is instructed to reproduce the sector identification portion of each sector, and the sector identification portion reproduction signal 112 is output. The recording means 105 also instructs the laser drive 106 to record a recording data signal 112, which is input data from the outside, by a recording request signal 119 from the control means 103.
The laser drive 106 includes the reproducing means 104 and the recording means 10 described above.
According to the data reproducing / recording instruction from 5, the semiconductor laser 107 is driven with the reproducing power output or the recording power output.
The read-only data section ROM and recordable data section RAM1 in the read-only / recordable area mixed type sector 109 of the information storage medium 108 irradiated with the laser beam by the semiconductor laser 107.
, And the recordable data area RAM2 of the recordable area single type sector 110 are reproduced, and the recordable data area RAM1 of the read-only / recordable area mixed sector 109 and the recordable area are recorded. Recording is performed on the recordable data area RAM2 of the feasible area single type sector 110. Further, the sector identification portion ID of each sector is also read using the semiconductor laser 107, and the sector identification portion reproduction signal 112 is output.

FIG. 5 is a block diagram of an information recording / reproducing apparatus according to the second embodiment of the present invention. In FIG. 5, it is the same as that shown in the first embodiment except for the following matters.

The difference from the first embodiment is the input / output signals in the control means 103 and the reproduction system. The control means 103 uses the input read signal 117 as a reproduction request instruction signal based on the sector identification flag signal 115 of the sector in which the address match signal 114 is output, and uses the sector data information section processing function 501 to determine the sector. The reproduction means 104 is instructed to read the sector data information part and the sector data in the form of the reproduction sector signal 122. The control unit 103 may again pass the address to the reproducing unit 104 and perform the same reproducing process by using the alternative sector processing function 502 based on the content of the sector data information section. Further, the control means 103 controls the input write signal 116.
Based on the sector identification flag signal 115 of the sector in which the address coincidence signal 114 is output as a recording request instruction signal, the sector data information section processing function 501 and the alternative sector processing function 502
Is used to instruct the recording means 105 to write the sector data information section of the sector by the recording request signal 119.

FIG. 6 shows the sector format of the optical disc applied in the second embodiment. FIG. 6 shows, among the sector formats of the optical disk corresponding to the first embodiment shown in FIG. 3, particularly the format of the recordable areas RAM1 and RAM2. As shown in FIG. 6A, the recordable area RAM1 of the read-only / recordable area mixed type sector has an alternative flag A-FLG and an alternative sector address A-A.
It is divided into DR. The alternative flag A-FLG is a flag that indicates whether the own data area of the sector is used as data or an alternative sector is used as data. The alternative sector address A-ADR is a sector that replaces the data in the ROM area. Indicates the address of. The alternative flag A-FLG and the alternative sector address A-ADR are collectively referred to as the sector data information section SEC-INFO described above. On the other hand, the recordable area RAM2 of the recordable area single type sector is as shown in FIG.
Use all RAM area as data, or
As shown in FIG. 2B, the sector data information section SEC- consisting of the alternative flag A-FLG and the alternative sector address A-ADR.
INFO and data area SEC-DATA are used separately. The alternative flag A-FLG has the same meaning as described above.

Regarding the information recording / reproducing apparatus of the second embodiment configured as described above in FIG. 5, an embodiment of the information storage medium applied to the apparatus of this embodiment (FIG. 2 and the sector format shown in FIG. The operation will be described below with reference to FIG.

The operation of the control means 103 in the case of reproduction will be described below. Based on the sector identification flag of the target sector detected by the sector identification flag detection unit 101, the control unit 103, in the case of the read-only / recordable area mixed type sector 109 in which the FLG has a value of 1, is recordable in the sector. The sector data information section SEC-INFO (FIG. 6a) consisting of the substitution flag A-FLG of the data section RAM1 and the substitution sector address A-ADR is reproduced, and the substitution flag A is processed using the sector data information section processing function 501. -If the FLG indicates that the own data area of the sector is used as data, the read-only data section RO in the sector
When M is reproduced and the alternative flag A-FLG indicates that the alternative sector of the sector is used as data, the alternative sector processing function 502 is used to replace the alternative sector address A-ADR.
Performs playback processing of the sector pointed to by. On the other hand, in the case of the recordable area single type sector 110 in which the FLG has a value of 0, the recordable data area RAM2 in the sector is reproduced and analyzed. At this time, when all the RAM2 shown in FIG. 6b-1 is used as data, the RAM2 is reproduced and the RA shown in FIG.
M2 is sector data information section SEC-INFO and data area SEC-DA
In the case of TA, the sector data information section SEC-INFO is reproduced and the sector data information section processing function 501 is used to set the alternative flag A-FLG to the data area SEC-DATA in the sector as data. If so, the data SE in the sector
If C-DATA is reproduced and the alternative flag A-FLG indicates that the alternative sector of that sector is used as data,
Using the alternative sector processing function 502, the sector indicated by the alternative sector address A-ADR is reproduced. In the reproduction processing of the target sector, the reproduction request signal 118 for requesting reproduction is output from the control means 103 to the reproduction means 104, and vice versa.
The sector data information section SEC-INFO of the designated reproduction sector and the sector data are input in the form of a reproduction sector signal 122.

Next, the operation of the control means 103 at the time of recording is that when the read-only / recordable area mixed type sector 109 in which the sector identification flag FLG of the target sector has the value 1, Using the information section processing function 501, the alternative flags AF in the sector data information section SEC-INFO are used.
Flag LG to use the area of its own sector as data. Further, when the alternative sector is used as the data, the sector data information section processing function 501 and the alternative sector processing function 502 are used to substitute the alternative flags AF in the sector data information section SEC-INFO.
Flag LG to use alternate sectors as data,
The address of the sector to be replaced is entered in the alternative sector address A-ADR. When setting the flag and entering the address of the sector to be replaced,
Record to RAM1. In the recordable area single type sector 110 in which FLG has a value of 0, when all the RAM2 shown in FIG. 6b-1 is used as data, the data is recorded in the RAM2 and the data is recorded in FIG. 6b-2. The RAM2 shown is the sector data information section SE
When C-INFO and data area SEC-DATA are used, if the data area SEC-DATA in that sector is used as data, the sector data information section processing function 501 is used to substitute in the sector data information section SEC-INFO. Data is recorded by setting the flag A-FLG so that the area of its own sector is used as data. If the alternative sector is used as data, the sector data information section processing function 501 and the alternative sector processing function 502 are used to substitute the alternative flags AF in the sector data information section SEC-INFO.
Flag LG to use alternate sectors as data,
The address of the sector to be replaced is entered in the alternative sector address A-ADR. When the flag is set and the address and data of the sector to be replaced are entered, the data is recorded in the recordable data area RAM2 in the sector. In the recording process of the target sector, the control unit 103 outputs to the recording unit 105 a recording request signal 119 including the information of the alternative flag A-FLG and the alternative sector address A-ADR in the sector data information section SEC-INFO.

FIG. 7 is a block diagram of an information recording / reproducing apparatus according to the third embodiment of the present invention. In FIG. 7, it is the same as that shown in the first embodiment except for the following matters.

The difference from the first embodiment is the input / output signals in the control means 103 and the reproduction system. The control means 103 uses the input read signal 117 as a reproduction request instruction signal and, based on the sector identification flag signal 115 of the sector in which the address match signal 114 is output, reproduces the sector data information part and sector data of the sector. Playback means 104 for reading in the form of signal 122
Instruct to. Based on the contents of the sector data information section,
The control means 103 uses the effective sector processing function 701 to determine whether to output the sector data as the reproduction data signal 120. Further, the control means 103 uses the input write signal 116 as an address matching signal 114 as a recording request instruction signal.
On the basis of the sector identification flag signal 115 of the sector which has occurred, the effective sector processing function 701 is used to instruct the recording means 105 to write the sector data information part of the sector by the recording request signal 119.

FIG. 8 shows the sector format of the optical disc applied in the third embodiment. FIG. 8 shows the sector format of the optical disk corresponding to the first embodiment shown in FIG. 3, focusing on the format of the recordable areas RAM1 and RAM2. The recordable area RAM1 of the read-only / recordable area mixed type sector is composed of a valid flag V-FLG as shown in FIG. The valid flag V-FLG is a flag that indicates whether the own data area of the sector is valid data or invalid data. Recordable area Single-type sector recordable area RAM2
Uses all the RAM areas as data as shown in FIG. 8b-1, or divides into a valid flag V-FLG and a data area SEC-DATA as shown in FIG. 8b-2. To use. The valid flag V-FLG has the same meaning as described above.

Regarding the information recording / reproducing apparatus of the third embodiment configured as described above in FIG. 7, an embodiment of the information storage medium applied to the apparatus of this embodiment (FIG. 2 and the sector format shown in FIG. The operation will be described below with reference to FIG.

The operation of the control means 103 in the case of reproduction will be described below. Based on the sector identification flag of the target sector detected by the sector identification flag detection unit 101, the control unit 103, in the case of the read-only / recordable area mixed type sector 109 in which the FLG has a value of 1, is recordable in the sector. If the valid flag V-FLG (FIG. 8a) of the data section RAM1 is reproduced and the valid flag V-FLG indicates that the data of the sector is valid by using the valid sector processing function 701, If the reproduction-only data section ROM of is reproduced, and it is shown that the ROM is invalid, it is not reproduced. On the other hand, in the case of the recordable area single type sector 110 in which the FLG has a value of 0, the recordable data area RAM2 in the sector is reproduced and analyzed. At this time, when all the RAM2 shown in FIG. 8b-1 is used as data, the RAM2 is reproduced and the RAM2 shown in FIG.
To set the valid flag V-FLG and the data area SEC-DATA, use the valid sector processing function 701.
-If the FLG shows that the sector is valid,
If the data SEC-DATA in the sector is reproduced and it is indicated that it is invalid, it is not reproduced. In the reproduction processing of the target sector, the reproduction request signal 118 for requesting reproduction is outputted from the control means 103 to the reproduction means 104, and conversely, the reproduction means 104 determines whether the valid flag V-FLG of the designated reproduction sector is valid or invalid. Input in the form of signal 122.

Next, the operation of the control means 103 at the time of recording is that in the read-only / recordable area mixed type sector 109 in which the sector identification flag FLG of the target sector has a value of 1, when the ROM area of that sector is used as data, it is a valid sector. Using the processing function 701, the valid flag V-FLG of the recordable area RAM1 in the sector is set to indicate that the area of its own sector is valid, and when the ROM area is not used as data, a flag indicating invalid is set. . FLG
In the recordable area single type sector 110 with the value 0,
If all the RAM2 shown in FIG.
RAM2 shown in Fig. 8 b-2 was used to record data in M2.
Is used as the effective flag V-FLG and the data area SEC-DATA, the effective sector processing function 701 is used to make the data area SEC-DATA in the sector data, and the recordable area RAM2 in the sector is recorded. The valid flag V-FLG is set to indicate that the area of its own sector is valid, and the data area SEC
-When not using DATA as data, set a flag indicating invalidity. In the recording process of the target sector, the recording request signal 119 including the information of the valid flag V-FLG indicating the validity or invalidity is output from the control means 103 to the recording means 105.

As described above, according to this embodiment, as shown in the first embodiment, in general, the read-only data (ROM data) and the recordable data (RAM data) are contained in the sector.
You can use the advantages of OM and RAM. In particular, as shown in the second embodiment, since ROM / RAM coexists in the sector, information for performing the replacement of the ROM data in the ROM data section of another sector or the RAM data section of another sector ( The alternative flag and the alternative sector address) can be written in the same sector, and can be processed easily and at high speed during reproduction and recording. Further, in the third embodiment, the deletion processing is easy because the RAM area of the same sector has a valid / invalid flag for deleting the data in the sector (making it invalid data).

Here, the RAM area may be a write-once type or an erasing type.

EFFECTS OF THE INVENTION As described above, according to the present invention, since data can be recorded in a disc having read-only data created by a maker in advance, it is possible to correct or delete data provided by the maker, and its practical effect. Is big.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention,
2A, 2B, 2C, 2D and 2E are a plan view, a partially enlarged view (S1 portion), a partially enlarged view (S11 portion), and a sectional view of an embodiment of an optical disc applied to the present invention, respectively. A-A ', B-
B '), sectional view (C-C'), FIG. 3 is an explanatory view of the sector format of the optical disk in the embodiment of FIG. 1, and FIG. 4 is an enlarged sectional view of tracks of the optical disk of the embodiment of FIG. FIG. 5 is a block diagram of an apparatus according to the second embodiment of the present invention, FIG. 6 is an explanatory diagram of a sector format of an optical disk in the embodiment of FIG. 5, and FIG. 7 is a third embodiment of the present invention. FIG. 8 is a block diagram of the apparatus of FIG. 8, and FIG. 8 is an explanatory diagram of a sector format of the optical disc in the embodiment of FIG. 100 ... address reading means, 101 ... sector identification flag detecting means, 102 ... address comparing means, 103 ... control means, 104 ... reproducing means, 105 ... recording means, 106 ... laser drive, 107 ... Semiconductor laser, 108 ... Information storage medium, 109 ... Read-only / recordable area mixed sector, 110
...... Recordable area Single type sector, 111 ...... Target address signal, 112 ...... Sector ID part playback signal, 113 ...... Playback address signal, 114 ...... Address match signal, 115 ...... Sector identification flag signal, 116 ... … Write signal, 117 …… Read signal, 118 …… Playback request signal, 119 …… Record request signal, 120
...... Playback data signal, 121 …… Recorded data signal, 122 ……
Playback sector signal, 20 ... Optical disk, 21 ... Center hole,
22 …… Play-only data section, 23 …… Recordable data section, 24
...... Disk base material, 25 ...... tracks, 25a ...... reproduction-only data area, 25b ...... recordable data area, 26 ...... photosensitive recording member, 27 ...... protective layer, S1 to Sn ...... reproduction-only / Recordable area mixed type sector, ID1 to ID1n …… S1 to Sn sector identification part, S11 to S1n …… Recordable area single type sector, ID11
~ ID1n …… S11 ～ S1n sector identification part, PR …… preamp, AM …… address mark, ADR …… address, FLG, FLG
1, FLG2 …… Sector identification flag, CRC …… Error detection code, PO …… Postamble, G1, G2, G3 …… Gap, RO
M: reproduction-only data area, RAM1, RAM2: recordable data area, 40: light-sensitive recording member, 41: uneven pit, 42
...... Record dots, 501 ...... Sector data information processing function, 502 ...... Alternative sector processing function, A-FLG ...... Alternative flag, A-ADR ...... Alternative sector address, SEC-INFO ...... RA
Sector data information area in M2, SEC-DATA ... recordable data area in RAM2, 701 ... effective sector processing function, V-FLG
...... Valid flag.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Iwamura 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Takashi Ishida, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd.

Claims (5)

[Claims] 1. A read-only / recordable-area mixed sector having a track-sensitive recording member formed on all tracks and having a sector identification section, a read-only data section, and a recordable data section in the tracks. A storage medium comprising a recordable area single type sector having a sector identification section and a recordable data section,
Alternatively, in a storage medium composed only of the read-only / recordable area mixed type sector, the sector identification information is used to identify sector address information and the read-only / recordable area mixed type sector or the recordable area single type sector. Address reading means for reading sector address information from the sector identification portion, and address comparison means for comparing the sector address information of the sector identification portion with a target sector address for an information recording medium having a sector identification flag for Sector identification flag detecting means for detecting a sector identification flag from the sector identification portion, reproducing means for reproducing the read-only data portion, recording / reproducing means for recording / reproducing the recordable data portion, and the sector identification flag The sector type is known based on the detection information obtained from the detection means, and the read-only / recordable state is possible. Information recording provided with control means for controlling reproduction of the read-only data section and recording / reproduction of the recordable data section in the area mixed type sector, and recording / reproduction of the recordable data section in the recordable area single type sector Playback device. 2. A recordable data section of a read-only / recordable area mixed type sector is divided into a sector data identification flag area and an alternative sector address area, and a read-only data section is provided in the sector data identification flag area. Flag information for identifying whether to perform reproduction or reproduction processing again from the sector pointed to by the sector address entered in the alternative sector address area is placed, and the address of the sector to be the alternative of the read-only data section is placed in the alternative sector address area. In the configuration, the control means sets the read-only / recordable area mixed type sector to
A function of detecting the sector data identification flag of the recordable data section and reproducing the reproduction-only data section based on the detection information or reproducing again from the sector indicated by the sector address included in the alternative sector address area. Recording a sector data identification flag indicating the reproduction of the reproduction-only data section in the sector data identification flag area, and a sector data identification flag of the sector data identification flag indicating the execution of reproduction processing of an alternative sector of the reproduction-only data section The information recording / reproducing apparatus according to claim 1, further comprising a function of recording in an area and recording an address of an alternative sector in the alternative sector address area. 3. A read-only / recordable area sector is provided with a sector data identification flag for identifying whether the read-only data section is valid or invalid in the recordable data section of the read-only / recordable area mixed type sector. In the mixed sector, the sector data identification flag of the recordable data section is detected, and if it is valid, the reproduction-only data section is reproduced, and if it is invalid, the reproduction-only data section is reproduced. 2. The function according to claim 1, further comprising a function of not performing the above operation and a function of recording a sector data identification flag indicating validity / invalidity of the data of the reproduction-only data portion in the recordable data portion. Information recording / reproducing apparatus. 4. A recordable data area of a recordable area single type sector is divided into three areas, a recording data area, a sector data identification flag area and an alternative sector address area, and the recording data area is provided in the sector data identification flag area. Flag information for identifying whether to reproduce the data of the above or to reproduce again from the sector pointed to by the sector address entered in the alternative sector address area, and in the alternative sector address area, the address of the sector to be the alternative of the recording data area In the recordable area single type sector, the control means detects the sector data identification flag of the recordable data section and reproduces the recorded data area or the alternative sector address area based on detection information. The function to replay from the sector pointed to by the sector address entered in Recording a sector data identification flag in the sector data identification flag area, recording a sector data identification flag in the sector data identification flag area indicating execution of reproduction processing of an alternative sector in the recording data area, and the alternative sector address The information recording / reproducing apparatus according to claim 2, further comprising a function of recording an address of an alternative sector in the area. 5. A recordable data section of a recordable area single type sector comprises a record data area and a sector data identification flag area for storing a sector data identification flag for identifying validity / invalidity of data in the record data area. In the recordable area single type sector, the control means detects the sector data identification flag of the recordable data section, and if valid based on the detection information, reproduces the recorded data area and invalidates it. If there is a function for selecting whether or not to perform reproduction, and a function for recording a sector data identification flag indicating validity / invalidity of data in the recording data area in the sector data identification flag area, it is characterized in that The information recording / reproducing apparatus as set forth in the section 3 above.