JP2001216710A - Optical disk recording/reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent higher reliably the data from being recorded on a disk with a recorder different from a device recording the data on the disk. SOLUTION: The information on the recorder is recorded beforehand on the disk initially recording the data. When the data are recorded on the recorded disk, the recorder information is read out from the disk, and only in the case of coinciding with one self recorder information, the new data are admitted to be recorded, and the new data are prevented from being recorded in the case of non-coinciding with the oneself recorder information.

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 / reproducing apparatus having a plurality of recording / reproducing apparatuses, and more particularly to a technique for matching a recording / reproducing apparatus for recording data on a disk with a recording / reproducing apparatus for reproducing data from the disk. About.

[0002]

2. Description of the Related Art Conventionally, when recording and reproducing data on an optical disk (sometimes simply referred to as a disk) with an optical disk recording / reproducing apparatus, for example, the data can be recorded next time in an extra area when recording using a CD-RW. To do so, I had to close the session. In this case, anyone could add data to the surplus area of the disk where the first write was performed. It was also possible to erase all data written at the first time, write new data, or rewrite data.

[0003] In this case, it is only known by the person who wrote the data the first time whether the data written on the disc can be rewritten or erased. If there are multiple kitchens, it is necessary to devise a device such as recording on a disk, a case, or the like, which device has been used for recording.

Also, like a DVD-RAM disk,
In the case of a disc in a case, there is a write-protected nail on the case, and by setting this manually, you can set whether to allow or disallow writing, but anyone can set the nail,
In addition, there is a problem that if the case is taken out of the case, it cannot be used.

[0005] In the case of an optical recording apparatus, since there is a variation in the laser output to be recorded between apparatuses, a variation by a recording apparatus manufacturer, and an optical variation, a recording apparatus different from the first recording apparatus is used. If data is recorded on the same disk, the data may not be read or may be damaged.

FIG. 21 is a block diagram showing a configuration example of a conventional optical disk recording / reproducing apparatus. In the figure, assuming that a disk (Disk) 1 is, for example, a DVD-RAM set in a recording / reproducing apparatus, the disk 1 is placed in a protective case 24, and the protective case 24 has a An erasure prevention tab 25 is provided. A signal is read from the disk 1 by the pickup 3 and input to the preamplifier 4, which generates an RF signal, a tracking error (hereinafter referred to as TE) signal, and a focus error (hereinafter referred to as FE) signal. An APC circuit 14 for controlling the optical power of a laser (not shown) in the pickup 3 is provided, and ON / OFF of the laser is controlled by a CPU 22.

[0007] The FE signal generated by the preamplifier 4 is input to an A / D converter 6 of a servo amplifier 5 and equalized by an equalizer (E).
Q), the signal is converted to an analog signal by a D / A converter 8 via an amplifier (Amp) 7, and then input to a driver circuit 12 for driving a focus coil, and a focus coil (not shown) in the pickup 3. Drive.

The TE signal generated by the preamplifier 4 is input to an A / D converter 9 of a servo amplifier 5 and is equalized (E).
Q) and an amplifier (Amp) 10 and a D / A converter 11
After being converted into an analog signal, the signal is input to a driver circuit 13 for driving a tracking coil, and drives a tracking coil (not shown) in the pickup.

The RF signal generated by the preamplifier 4 is input to an A / D converter 16 of a decoder 15 and is converted into a digital signal. After that, the equalizer (EQ) and the amplifier (Amp) are converted.
The signal is input to a synchronization detection circuit 18 via an interface 17, and further, an error is generated by a spindle error circuit 19 and converted into an analog signal by a D / A converter 20, and then a spindle (hereinafter referred to as SPDL) by a spindle driver circuit 21. Drive motor-2. In addition, an equalizer (EQ) and an amplifier (A
mp) 17 is demodulated by the demodulation circuit 27 and output as data (DATA output).

The erasure prevention detector 26 detects whether the erasure prevention tab 25 is set to erasable or non-erasable, and the CPU 22 reads the result.
Is stored in the memory 23 connected to. When the erasure prevention tab 25 is set to be erasable, the input data is modulated into a DVD-RAM recording format by the modulation circuit 28, and is recorded on the disk 1 by the recording circuit 29 via the pickup 3.

Next, a conventional disc erasure enable / disable determination method will be described with reference to FIGS. For example, disk 1
In the protective case 24, an erasure prevention tab 25 is provided on the same surface as the recording surface of the disk 1. When recording data on the disc 1, the tab 25 is switched to the recordable side. When the disc 1 is set in the recording / reproducing apparatus, the recording / reproducing apparatus detects which tab 25 is set by the erasure prevention detector 26.

In the detection method, for example, when a mechanical detection switch 30 is provided, and the tab 25 is at a recordable position, the detection switch 30 becomes as shown in FIG. 23A and outputs, for example, "L". . On the other hand, when the tab 25 is at the position where recording is not possible, the detection switch becomes as shown in FIG. 23B and outputs, for example, "H". The CPU checks this signal to determine whether recording is possible or not.

[0013]

By the way, in the above-mentioned conventional optical disk recording / reproducing apparatus, the disk can be erased.
In the unrecognizable method, the “claw” of the case or the erasure prevention tab 25
There is a problem that anyone can rewrite the data just by switching. DVD-RAM
In the case of a disk which can be used by taking it out of the protective case 24, there is a problem that the erasure prevention management performed in the case 24 cannot be performed. Furthermore, in the case of an optical recording device, there is a variation between recording devices in the laser output, a variation by a recording device manufacturer, and an optical variation. If such data is recorded, the data may not be read or may be damaged.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a method for recording data on a disk with a recording device different from a device recording data on the disk. Can be prevented high,
Another object of the present invention is to provide an optical disk recording / reproducing apparatus capable of reliably performing data erasure prevention management for a disk used out of a case.

[0015]

According to one aspect of the present invention, there is provided an optical disc recording / reproducing apparatus for recording / reproducing data on / from an optical disc, wherein data is first recorded on the optical disc. Device information generating means for generating information for specifying the optical disk recording / reproducing device at the time, device information recording means for writing device information generated by the device information generating means on the optical disk,
Device information reproducing means for reading the device information from the optical disc when the already recorded optical disc is set in the device; the device information obtained by the device information reproducing means; and the device information generated by the device information generating means. And comparing means for comparing the two pieces of device information with each other, and when the comparing means determines that the two pieces of device information match each other, permits recording of new data on the already-recorded optical disc, and determines that the two pieces of device information do not match. Recording control means for prohibiting the recording of new data on the already recorded optical disk when the determination is made.

According to the first aspect of the present invention, when data is first recorded on a disk, the device information of the recording device is recorded. Data can be written.

According to a second aspect of the present invention, in an optical disc recording / reproducing apparatus for recording / reproducing data on / from an optical disc, when data is first recorded on the optical disc,
Unique information creating means for creating unique information from the data, unique information recording means for writing the unique information created by the unique information creating means on the optical disc, and the unique information recording means when the already-recorded optical disc is set in the apparatus. Unique information extracting means for reading information from the optical disc;
A comparing means for comparing the unique information obtained by the unique information extracting means with the unique information created by the unique information creating means, and when it is determined by the comparing means that the two unique information match, the Recording control means for permitting recording of new data on the already-recorded optical disc, and for prohibiting recording of new data on the already-recorded optical disc when it is determined that the two unique information do not match; Is provided.

According to the second aspect of the present invention, when data is first recorded on a disk, the unique information created from the recorded data is recorded on the disk. New data can be written only in a recording device that can create the same unique information as that described above.

A third feature of the present invention is that in an optical disk recording / reproducing apparatus for recording / reproducing data on / from an optical disk, information for specifying the optical disk recording / reproducing apparatus is generated when data is first recorded on the optical disk. Device information generating means, device information recording means for writing device information generated by the device information generating means on the optical disc, and device information for reading the device information from the optical disc when a recorded optical disc is set in the apparatus A reproducing unit, a unique information creating unit that creates unique information from the data when the data is first recorded on the optical disc, and a unique information recording unit that writes the unique information created by the unique information creating unit on the optical disc. And when the already recorded optical disk is set in the apparatus, Comparing the device information obtained by the device information reproducing device with the device information generated by the device information generating device, or comparing the device information obtained by the device information generating device with the device information generated by the device information generating device. Comparing means for comparing the information with the unique information created by the unique information creating means; and when the comparing means determines that the two device information matches, or when it is determined that the two unique information match. Permitting recording of new data on the already recorded optical disc,
Recording control means for prohibiting recording of new data on the already-recorded optical disc when both device information is determined to be mismatched or when both unique information is determined to be mismatched. Is to do.

According to the third aspect of the present invention, when data is first recorded on a disc, the device information of the recording device is recorded. Data can be written. Alternatively, when the data is first recorded on the disc, the unique information created from the recorded data is recorded on the disc.
New data can be written only in a recording device that can create the same unique information as the unique information read from the disk.

According to a fourth aspect of the present invention, in an optical disk recording / reproducing apparatus for recording / reproducing data on / from an optical disk, when recording data on the optical disk, a disk format or a file format for the next recording of data. Data protection information creating means for creating permission / non-permission information in the above, recording means for recording the permission / non-permission information created by the data protection information creation means on the optical disc, Information reading means for reading the permission / non-permission information from the recording optical disc; and recording for prohibiting recording of new data on the already recorded optical disc when the non-permission information is read from the information reading means. Control means.

According to the fourth aspect of the present invention, when the disc is taken out of the case and used, the information of permission or non-permission of the next data is written to the already recorded optical disc. By reading permission / non-permission information, recording permission / prohibition can be managed.

According to a fifth aspect of the present invention, there is provided an optical disk recording apparatus having a plurality of drives for recording and reproducing data on an optical disk, and having a function of moving the optical disk between the arbitrary drives and setting the optical disk in another drive. In a reproducing apparatus, when information is first recorded on the optical disc, drive information generating means for generating information for specifying the drive, and drive information recording means for writing drive information generated by the drive information generating means on the optical disc A drive information reproducing means for reading the drive information from the optical disc when a recorded optical disc is set in the drive, the drive information obtained by the drive information reproducing means, and a drive information generated by the drive information generating means. Comparing means for comparing drive information, and said comparing means If it is determined that the two pieces of drive information match, the drive is permitted to record new data on the already-recorded optical disc, and if it is determined that the two pieces of drive information do not match, the data is recorded. A recording control unit for prohibiting recording of new data on the recording optical disk by the drive; and a drive that records the drive information from the drive information obtained by the drive information reproducing unit. A discriminating means for discriminating; and a moving means for moving and setting the optical disc in the drive discriminated by the discriminating means.

According to the fifth aspect of the present invention, the drive information of the drive is recorded when the data is first recorded on the disk. When writing is performed and the drive information does not match, the drive on which recording was first performed is specified from the drive information, the disc is moved to this drive, and new data is recorded.

According to a sixth aspect of the present invention, in the optical disk recording / reproducing apparatus according to the fifth aspect, the drive information generated by the drive information generating means is stored in an external storage device.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a first embodiment of the optical disk recording / reproducing apparatus of the present invention.
The optical disk recording / reproducing apparatus includes a spindle motor 2 for rotating the disk 1, a pickup (PU) 3 for recording and reproducing data on the disk 1, a preamplifier 4 for generating various signals from data reproduced by the pickup 3, and a control signal from the preamplifier 4. , A servo amplifier 5 for generating a servo signal for the pickup 3, drivers 12 and 13 for outputting the servo signal to the pickup 3, and an APC circuit (1) 1 for controlling the optical power of the pickup 3.
4. An APC circuit (2) 32, a decoder 15 for generating a reproduction signal by inputting an RF signal from the preamplifier 4 and generating a control signal for the spindle motor 2, a driver 21 for driving the spindle motor 2, and the entire device CPU 2 for controlling the data and managing data recording / reproducing for the disk
2. A memory 23 for storing various data necessary for the operation of the apparatus, an erasure prevention detector 26 for detecting erasure prevention from a case 24 of the disk 1, a modulation circuit 28 for modulating recording data, and outputting the modulation data to the pickup 3. A recording device 29 for generating information on a recording device to be recorded on the disk 1, and a recording device determining circuit 31 for determining a device that has recorded data on the disk 1.

Here, the pickup 3 is for CD and DVD.
Pickups are housed in the same case, and the structure is as shown in FIG. Inside the pickup 3, for example, a disk to be reproduced is a CD, a CD-RW and a D.
In the case of VD, an objective lens 50 for CD and an objective lens 51 for DVD, a laser (hereinafter referred to as LD) 54 for CD and an LD 53 for DVD, and an objective lens 50 for CD and an objective lens 51 for DVD are used. Focus coil 52 driven at the same time, light receiving element 60 for CD and light receiving element 59 for DVD, mirror 58 for CD and half mirror 5 for CD
7. It is composed of a DVD mirror 56 and a half mirror 55. The optical configuration of the pickup 3 is as follows.
This is the same as that of a conventional reproducing apparatus such as a CD.

Next, the operation of this embodiment will be described.
A signal is read from the disk 1 set in the apparatus by the pickup 3 and input to the preamplifier 4. In order to control the optical power of the LDs 53 and 54 in the pickup 3, the APC circuit (1) 14 and the APC circuit (2) 32
And the ON / OFF of the laser is controlled by the CPU 22
Is controlled by

The FE signal from the CD LD 54 and the FE signal from the DVD LD 53 produced by the preamplifier 4 are input to the A / D converter 6 of the servo amplifier 5 and the amplifiers 33 and 34. The outputs of the amplifiers 33 and 34 are input to the A / D converter 35. At this time, the A / D converter 6 and the A / D converter 3
5 is stored in the memory 23 by the CPU 22.

Further, the LD for CD to the A / D converters 6 and 35
The FE signal by 54 and the FE signal by the LD 53 for DVD are taken in time-division by the clock (CLK) 36. In the time-sharing method, for example, the input is switched by a switch, but illustration is omitted.

The RF signal generated by the preamplifier 4 is input to a decoder 15, converted into a digital signal by an A / D converter 16, and then equalized (EQ) and an amplifier (Amp) 17.
, The error is generated by a spindle error circuit 19, converted into an analog signal by a D / A converter 20, and then output to the spindle motor 2 by a spindle driver circuit 21. Drive this.

An equalizer (EQ) and an amplifier (Am)
The output of p) 17 is demodulated by the demodulation circuit 27, and the demodulated data is input to the recording device determination circuit 31. The determination result of the recording device determination circuit 31 is input to the CPU 22 and stored in the memory 23. Further, a recording device information creation circuit 30 for creating information of the recording device is connected to the input line, and the information of the recording device output from the recording device information creation circuit 30 is written on the disk 1 by the CPU 22.

Next, the operation during data recording will be described with reference to FIG. It is confirmed whether the disc 1 is set (Step (STEP 1)). If the disc 1 is set, disc (Dsic) discrimination is performed (Step 2), and it is discriminated whether the set disc 1 can be recorded and reproduced (Step 2). 3) If it is determined that the disc can be recorded / reproduced, the pickup 3 is focused in (step 4), and it is determined whether the disc has already been recorded by reading the first data (step 5). ). The disc discrimination method is performed, for example, by comparing S-curve levels.

If it is determined in step 3 that the disc is not a recordable disc, the process exits from this operation processing to perform normal reproduction. Also, when it is determined in step 5 that recording has already been performed, this processing is not performed, and a rewriting processing described later is performed.

When a recording command is received from the user (step 6), information of the recording device is created by the recording device information creation circuit 30 (step 7).
By outputting to the pickup 3 via the modulation circuit 28 and the recording circuit 29, the recording device information is recorded, for example, at the head of the data recording area of the disk 1 (step 8). Then, the input data to be recorded is recorded (step 9).

The information of the recording device may be set by the manufacturer at the time of shipment of the device (for example, a serial number), or in a company using a plurality of devices, the user may set the information arbitrarily by himself. For example, when six recording devices are connected to one personal computer by SCSI, the drive numbers (SCSI numbers) set for the respective drives are
The PC captures these drive numbers and assigns them to the SCSI
Alternatively, the information may be sent to the recording device via the SCSI, and the recording device may create the recording device based on the drive number, or the personal computer may send the information of the recording device created based on the drive number to the recording device via SCSI. Also, even when the IDE connection is established, the SCSI
The same operation as described above can be performed, and the same processing can be performed even when the connection is made in a mixture of SCSI and IDE.

Next, the operation at the time of rewriting will be described with reference to FIG. When the disk 1 recorded by the above method is set in the recording device again, it is confirmed whether the disk 1 has been set (STEP 21), and if the disk 1 is set, disc (Dsic) discrimination is performed. (Step 22), it is determined whether the set disk is a disk capable of recording and reproduction (Step 23). If it is determined that the disk is capable of recording and reproduction, the pickup 3 is focused in and stands by at the head of the recordable area (Step 23). 24). When a rewrite or erase command is received (step 25), the information of the recording device recorded on the disk 1 is read and stored in the memory 23 via the CPU 22 (step 26), and the information of the recording device is created. This is stored in the memory 23 via the CPU 22 (step 27). The information of the recording device recorded on the disk 1 stored in step 26 is compared with the information of the recording device stored in step 27, and it is determined whether or not the set disk has been recorded by the same recording device (step 28). .

If it is determined in step 28 that the set disc has been recorded by the same recording device, recording or rewriting is permitted and data recording is started (step 29).

If it is determined in step 28 that the set disk is not recorded by the same recording device, and if it is determined in step 23 that the disk is not a recordable disk, the recording process is not performed. The process ends.

According to the present embodiment, at the time of the first recording, the unique information of the disc is created and recorded in the recording device. Therefore, when the disc is set in the recording device next, the unique information of the disc is changed. The disc is read and compared with the unique information of the disc stored in the main body of the recording apparatus to determine whether or not the disc is recorded by this recording apparatus. Can be prevented. Also, since the information of the recording device was recorded on the disc, even the person who recorded it did not need to write it down, and even if a person other than the recording person newly recorded or rewritten this disc, It is possible to prevent recording by a recording device different from the recording device that has recorded.

When a different disk is newly inserted into the memory in the recording apparatus main body and the first recording is performed, the processing shown in FIG. 11 is performed so that a plurality of pieces of unique information for each disk can be stored. With this configuration, it is possible to handle a large number of disks with this configuration.

FIG. 5 is a block diagram showing a second embodiment of the optical disk recording / reproducing apparatus of the present invention. However, the same portions as those of the first embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description will be appropriately omitted.

The optical disk recording / reproducing apparatus of this embodiment includes a unique information creating circuit 41 and a unique information extracting circuit 42 instead of the recording apparatus discriminating circuit and the recording apparatus information creating circuit of the first embodiment shown in FIG. The only difference from the first embodiment is that the other configurations are the same.

Next, the operation of this embodiment will be described.
When data is to be recorded for the first time on the disc 1, when data to be recorded is input, unique information is created by the unique information creation circuit 41 from the input data, and the unique information is created.
It is stored in the memory 23 via U22. The unique information may be created, for example, by storing a certain amount of data once and creating it from the data, or may be created from information on a specific data position. The method is determined at design time in a ROM (not shown) in the CPU 22. And store it.

When a recording command comes to the disk 1, the recording data is modulated into a recording format by the modulation circuit 28, then output to the pickup 3 by the recording circuit 30, and the input data is recorded on the disk 1.

Next, when the disk is set, information from the disk 1 is read out by the pickup 3, and the FE signal and the TE signal generated by the preamplifier 4 are input to the servo amplifier 5. The RF signal created at that time is
It is input to the decoder 15. RF signal is A / D converter 1
After being converted to a digital signal in step 6, the equalizer (EQ)
The data is demodulated by the demodulation circuit 27 via the amplifier 17 and the demodulated data. The demodulated data is input to the unique information extracting circuit 42, where the unique information is created from the data recorded on the disk. It is stored in the memory 23. The CPU 22 compares the information created by the unique information extracting circuit 42 with the unique information created when the data is first recorded, and permits the recording of new data on the disc 1 only when the information matches, and does not match. Do not allow recording in some cases.

Next, the operation at the time of recording will be described with reference to FIG. Check whether the disc 1 is set (step 6
0), if the disc 1 is set, the disc (Di
sc) discrimination is performed (step 61), and it is determined whether the set disc 1 is a recordable / reproducible disc (step 62). If it is determined that the disc is a recordable / reproducible disc, the pickup 3 is focused in (step 63).
The first data is read to determine whether or not the disc has already been recorded (step 64).

If it is determined in step 62 that the disc is not a disc on which data can be recorded, the process exits from this operation processing to perform normal reproduction. Also, if it is determined in step 64 that data recording has already been performed, this process is not performed, and a rewriting process described later is performed. When data to be recorded is input (step 65), unique information is created from the input data and stored (step 66).
When a recording start command is received from the user (step 6)
7) The input data to be recorded is recorded on the disk (step 68). If the disc is not the first disc to record data in step 64, the process ends without performing the recording process.

Next, the operation at the time of rewriting will be described with reference to FIG. When the disc 1 is set in the recording device again,
Check whether the disc 1 is set (Step 7)
1) If the disc 1 is set, the disc (Ds
ic) Perform discrimination (step 72), determine whether the loaded disc 1 is a recordable / reproducible disc (step 73), and if it is discriminated as a recordable / reproducible disc, focus on the pickup (step 74). Data for a predetermined time is read from 1 (step 75), and unique information is created (step 76). The unique information created at the time of the first recording and stored in the memory 23 is read (step 77). The unique information read from the disk 1 is compared with the unique information read from the memory 23, and it is determined whether or not the set disk has been previously recorded by this recording device (step 78). Only when it is determined, recording or rewriting is permitted to start the operation (step 79). If it is determined in step 78 that the set disc is not recorded by the same recording device, and if it is determined in step 73 that the disc is not a recordable disc, the data recording process is not performed, and The process ends.

According to the present embodiment, at the time of the first recording, the unique information of the disc is created and recorded in the recording device. Therefore, when the disc is set in the recording device next, the unique information of the disc is set. Is read and compared with the unique information of the disc stored in the main body of the recording apparatus, and it is determined whether or not the disc is recorded by this recording apparatus. Recording can be prevented. Also, since the information of the recording device is recorded on the disk, even the person who recorded the information does not need to write it down, and even if a person other than the recording person newly records or rewrites this disk,
It is possible to prevent recording by a recording device different from the recording device that recorded first.

When a different disk is newly inserted into the memory 23 in the main body of the recording apparatus and the first recording is performed, the processing shown in FIG. 6 is performed so that a plurality of pieces of unique information for each disk can be stored. With this configuration, it is possible to support a large number of disks with this configuration.

Here, in the first embodiment, the device information of the recording device is recorded on the optical disc, and in the second embodiment, the unique information created from the data to be first recorded on the optical disc is stored in the recording device. The configuration has been described. Even if these first and second embodiments are combined, of course, the same effect can be obtained. Here, as one example, a third embodiment will be described with reference to FIG.

FIG. 8 is a block diagram showing a third embodiment of the optical disk recording / reproducing apparatus of the present invention. However, FIG.
The same reference numerals are given to the same parts as those in the first embodiment shown in FIG. The optical disk recording / reproducing apparatus of the present example includes a unique information creating circuit 41 and a unique information extracting circuit 42 in addition to the recording apparatus information creating circuit 30 and the recording apparatus determining circuit 31, and other configurations are the same as those of the first embodiment. Is the same as

Next, the operation at the time of recording will be described with reference to FIG. Check whether the disc 1 is set (step 8
0), if the disc 1 is set, the disc (Ds
ic) A determination is made (step 81), and it is determined whether the set disk 1 is a disk capable of recording and reproducing (step 8).
2) If it is determined that the disk can be recorded and reproduced, the pickup 3 is focused on (step 83), and the head data is read to determine whether the disk has already been recorded (step 84). If it is determined in step 82 that the disc is not a recordable disc, the process exits from this operation processing to perform normal reproduction. Also, when it is determined in step 84 that recording has already been performed, this processing is not performed, and a rewriting processing described later is performed.

When a recording command is received from the user (step 85), information on the recording device is created (step 8).
6) Apart from the data to be recorded, it is recorded, for example, at the beginning of the disk 1 (step 87). When the input data is input (step 88), unique information J1 is created from the input data and the information of the recording device and stored in the memory 23 in the recording device (step 89). When a recording start command is received from the user, the input data to be recorded is recorded on the disk (step 90).

The information of the recording device may be set by the manufacturer (for example, a serial number) at the time of shipment of the device, or may be set arbitrarily by the user himself in a company using a plurality of devices at the same time. Also, for example, when six recording devices are connected to one personal computer by SCSI, the personal computer takes in the drive numbers (SCSI numbers) set for each drive and sends them to the recording device via SCSI. The recording device side may create the drive number based on the drive number, or the personal computer may send the recording device information created based on the drive number to the recording device via SCSI.

Further, even when the IDE connection is established, the SC
It is possible to perform the same operation as the SI, and to perform the same processing when the SCSI and the IDE are mixedly connected.

Next, the operation at the time of rewriting will be described with reference to FIG. When the disk 1 recorded by the above method is set in the recording device again, it is confirmed whether the disk 1 is set (step 91), and if the disk 1 is set, disc (Dsic) discrimination is performed (step 91). 9
2) It is determined whether the loaded disc 1 is a recordable / reproducible disc (step 93). If it is determined that the disc is a recordable / reproducible disc, the pickup is brought into focus to stand by at the head of the recordable area (step 9).
4).

When a rewrite or erase command is received (step 95), the information of the recording device recorded on the disk 1 is read and stored in the memory 23 via the CPU 22 (step 96). The data of the section and the amount is read (step 97), and the unique information J2 created from the read data is stored in the memory 2 of the recording device.
3 is stored.

Further, J1 already stored in the memory 23 of the recording device is called (step 99), and it is determined whether or not the devices match (J1 = J2) (step 100).
When it is determined that the disc 1 set in Step 100 has been recorded by the same recording device, recording or rewriting of new data is permitted and a recording operation is started (Step 101).

If it is determined in step 100 that the loaded disc 1 is not recorded by the same recording device, and if it is determined in step 93 that the disc is not a recordable disc, the recording process is not performed. Then, this processing is ended.

Next, a case where the recording device and the disc are stored in a changer will be described.

FIG. 11 is a block diagram showing a fourth embodiment of the optical disk recording / reproducing apparatus according to the present invention.
00. The changer 100 includes a disk moving device 102, a motor 103, a control CPU 104, a memory 105, and a drive (1) 10.
6 to drive (4) 109, disk case (1) 11
0 to a disk case (3) 112.

Inside the changer 100, four optical disk recording / reproducing apparatuses (drives 1 to 4) having the functions shown in FIG. 12 are accommodated, and disk cases (110 to 112) for storing 20 disks each. There are three,
The disc is taken out of the disc case, the disc is carried to the drives 1 to 4, the disc is loaded into the drive, and the disc is ejected from the drive. The control of the original disk case, the movement from the disk case to the drive, and the loading / ejection of the disk to the drive is controlled by the CPU 102 in the changer 100. Description of the disk moving mechanism and the like is omitted because it is a known system.

FIG. 12 is a block diagram showing a configuration example of the drive described above. This example is almost the same as the optical disk recording / reproducing apparatus shown in FIG. 5, but includes a recording apparatus information creation circuit 30 for creating information of the recording apparatus. Other configurations are the same as those in FIG.

Next, the operation of this embodiment will be described. When data to be recorded is input, a unique information creation circuit 41 creates unique information from the data to be recorded on the disk 1 from the input data, and further creates the recording device information by the recording device information creation circuit 30, The unique information and the recording device information are transmitted through the CPU 22 and further through the CPU 104 in the changer 100 outside the recording device.
0 is stored in the memory 105.

When a recording command comes to the disk 1, the unique information is modulated into a recording format by the modulation circuit 28 and the recording circuit 29 is recorded on the disk. The unique information may be created, for example, by storing a certain amount of data once and creating it from the data, or may be created from specific data position information. The method is determined at design time in a ROM (not shown) in the CPU 22. And store it.

Next, when the disk 1 is set, information from the disk 1 is read out by the pickup 3, and the FE signal and the TE signal are input to the servo amplifier 5 via the preamplifier 4. The RF signal is input to the decoder 15. After being converted into a digital signal by the A / D converter 16 of the decoder 15, the signal is demodulated by a demodulation circuit 27 via an equalizer (EQ) and an amplifier (Amp) 17.

The unique information is created from the demodulated data by the unique information extracting circuit 42 and stored in the memory 105 via the CPU 22 via the CPU 104 inside the changer 100 outside the recording apparatus. The extracted unique information is compared with the unique information created at the time of the first recording stored in the memory 105 in the changer 100, and information on which recording device was recorded is further stored in the memory 105 in the changer 100. Recalls certain device information, permits recording of new data in the set recording device (drive) only when the recording device information matches, and discriminates the recording device from the recording device information when not matching Then, the disk 1 is moved to the recording device (drive) to perform recording.

Next, the operation at the time of recording will be described with reference to FIG. Check if the disc 1 is set (step 2
00), if the disc 1 is set, the disc (Ds
ic) Perform discrimination (step 201), determine whether the loaded disc 1 is a recordable / reproducible disc (step 202), and if it is discriminated as a recordable / reproducible disc, focus the pickup 3 (step 2).
09), the head data is read to determine whether or not the disc has already been recorded (step 204). If it is determined in step 202 that the disc is not a recordable disc, the process exits from this operation processing to perform normal reproduction. Also, when it is determined in step 204 that recording has already been performed, this processing is not performed, and a rewriting processing described later is performed.

When data to be recorded is inputted (step 205), information of the recording device is created in step 206, and the data is sent to the CPU 104 in the changer 100 outside the recording device. Creates unique information from the changer 10 outside the recording device.
The data is sent to the CPU 104 within 0 (step 20).
7) The information is stored in the memory 105 together with the information of the recording device (step 208). When a recording start command is received from the user (step 209), the input data to be recorded is recorded (step 210). If the disc cannot be recorded in step 202, the process is terminated without performing the recording process.

Next, the operation at the time of rewriting will be described with reference to FIG. When the disc 1 is set in the recording device again, it is confirmed whether the disc 1 is set (step 3).
01), if the disc 1 is set, disc discrimination is performed (step 302), and it is discriminated whether the set disc is a disc capable of recording and reproducing (step 303).
If it is determined that the disc can be recorded and reproduced, the pickup 3 is focused on (step 304), and data for a predetermined time is read from the disc 1 (step 30).
5) Create unique information (step 306). In addition, the changer 100 is created when the first data is recorded.
The unique information stored in the memory 105 is read out (step 307). The unique information read from the disk 1 is compared with the unique information read from the memory 105, and the disk set from the information of the device stored together is used as the storage device of this recording device. It is determined whether or not the data has been recorded (step 308). If it is determined that the recorded data has been performed by this recording apparatus, recording or rewriting of new data is permitted and recording is started (step 309). .

If it is determined in step 308 that the disc set is not recorded by the same recording device, the information of the recorded device is read from the recorded information, and it is determined which recording device has been recorded (step 308). 310),
Move to the recording device that recorded the disc (step 31)
1) Recording is started (step 309).

If it is determined in step 303 that the disc is not a recordable disc, the process is terminated without performing the recording process.

In the above embodiment, the unique information and the recording device information created from the optical disc are stored in the memory 105 in the changer 100 outside the recording device. However, as described in the first embodiment, the recording device information including the recording device information is also included. A similar effect can be obtained by creating and storing unique information from information on the optical disk.

According to the present embodiment, at the time of the first recording, the unique information of the disc is created and recorded in the memory inside the changer 100 outside the recording apparatus. By reading the unique information of the disc and comparing it with the unique information of the disc stored outside the drive body, it is determined whether or not the disc is a disc recorded by this drive. It is possible to prevent recording on a different drive. Also, since the information of the drive is recorded in the changer 100 outside the drive, even the person who recorded the information does not need to write it down, and even if a person other than the recording person newly records or rewrites this disc. Can be prevented from being recorded on a drive different from the drive on which it was originally recorded, and if data is recorded on a drive different from the drive on which the data was recorded, the data can be prevented from being unreadable or damaged. Usability and reliability of the jar can be improved.

FIG. 15 is a flowchart for explaining a sixth embodiment of the optical disk recording / reproducing apparatus of the present invention. However, since the configurations of the changer and the optical disk recording / reproducing apparatus are the same as those in FIGS. 11 and 12, the description will be made with reference to FIGS. 11 and 12.

First, the operation at the time of recording will be described. For example, when the user sets the disc No. 7 (step 400), it is determined from the data stored in the memory 105 in the changer 100 outside the recording apparatus to which block the specified disk belongs (step 401). In this example, as shown in FIG. No. 1 to 60, drive No. 1 to
4 changer 100, so drive no. 1 Disk No. 1 to 15 Drive No. 2 Disk No. 16 to 30 Drive No. 3 Disk No. 31 to 45 Drive No. 4 Disk No. 46 to 60, and the changer 10 outside the recording device.
The above settings are stored in the memory 105 within the address “0”. Disk No. 7 has been designated, so that this disk has the drive No. 1 is determined.

Next, the disc No. No. 7 assigned to drive No. 7 The CPU 104 in the changer 100 controls the motor 103 and the disk moving device 102 so as to carry it to step 1 (106) (step 402).

It is confirmed whether the disc 1 is set (step 403). If the disc 1 is set, disc discrimination is performed (step 404), and it is discriminated whether the set disc can be recorded and reproduced (step 40).
5) If it is determined that the disc can be recorded and reproduced, the pickup 3 is focused on (step 406),
The head data is read to determine whether or not the disc has already been recorded (step 407).

If it is determined in step 405 that the disc is not a recordable disc, the operation exits from this operation processing to perform normal reproduction. Also, when it is determined in step 407 that recording has already been performed, this processing is not performed, and a rewriting processing described later is performed.

When data to be recorded is input (step 408), and when a recording start command is received from the user (step 409), the input data to be recorded is recorded on the disk (step 410). Step 405
If the disc is not recordable in step, the recording process is not performed and the process ends.

Next, the operation at the time of rewriting will be described with reference to FIG. The disc No. recorded by the above-described method. 7 is instructed by the user (step 500), it is determined from the data stored in the memory 105 in the changer 100 outside the recording device to which block the designated disk belongs (step 501). . Next, the disc No. No. 7 assigned to drive No. 7 1 (1
06), the CPU 10 in the changer 100
4 controls the motor 103 and the disk moving device 102 (step 502).

It is confirmed whether the disc 1 is set (step 503). If the disc 1 is set, disc (Dsic) discrimination is performed (step 504), and it is discriminated whether the set disc can be recorded and reproduced (step 504). If it is determined in step 505) that the disc can be recorded / reproduced, the pickup 3 is focused on and stands by at the head of the recordable area (step 506). When a rewrite or erase command is received (step 50)
7), recording or rewriting is permitted and recording is started (step 508). If it is determined in step 505 that the disc 1 set is not recorded by the same recording device, the process is terminated without performing the recording process.

According to the present embodiment, even in an apparatus containing a plurality of drives such as a changer, drive information is created and recorded on a disk at the time of the first recording, and then this disk is set in the drive. In this case, the information of this drive is read, and the disc is compared with the information of the drive in which the disc is set to determine whether the disc is a disc recorded by this drive. It is possible to prevent data from being recorded, and to prevent data from becoming unreadable or damaged when data is recorded on a drive different from the drive on which the data was recorded, thereby improving the usability and reliability of the changer. Can be.

FIG. 17 is a block diagram showing a seventh embodiment of the optical disk recording / reproducing apparatus of the present invention. However,
The same parts as those of the first embodiment shown in FIG. In this embodiment, recording / reproducing when a DVD-RAM disk is used out of a case will be described.

The configuration of the optical disk recording / reproducing apparatus is almost the same as that of the first embodiment shown in FIG. 1 except that the recording permission determining circuit 48 is used instead of the recording apparatus determining circuit 30 and the recording apparatus information creating circuit 31. And recording permission information creation circuit 49
And an operation unit 62 for the user to input information to the CPU 22.

Next, the operation of this embodiment will be described.
Disk 1 is a disk set in a recording / reproducing device,
The disc 1 is used out of the protective case. A signal is read from the disk 1 set in the apparatus by the pickup 3 and input to the preamplifier 4. In addition, an APC circuit (1) 14 and an APC circuit (2) 32 for controlling the optical power of the LDs 53 and 54 in the pickup 3 are provided.
The ON / OFF of the laser is controlled by the CPU 22.

The FE signal from the CD LD 54 and the FE signal from the DVD LD 53 produced by the preamplifier 4 are input to the A / D converter 6 of the servo amplifier 5 and the amplifiers 33 and 34. The outputs of the amplifiers 33 and 34 are input to the A / D converter 35. At this time, the A / D converter 6 and the A / D converter 3
5 is stored in the memory 23 by the CPU 22.

Also, the LD for CD to the A / D converters 6 and 35
The FE signal by 54 and the FE signal by the LD 53 for DVD are taken in time-division by the clock (CLK) 36. In the time division method, for example, the input is switched by SW, but the illustration is omitted.

The RF signal generated by the preamplifier 4 is input to a decoder 15, converted into a digital signal by an A / D converter 16, and then equalized (EQ) and an amplifier (Amp) 17.
, The error is generated by a spindle error circuit 19, converted into an analog signal by a D / A converter 20, and then output to the spindle motor 2 by a spindle driver circuit 21. Drive this.

An equalizer (EQ) and an amplifier (Am)
The output of p) 17 is demodulated by the demodulation circuit 27 and output as data. At the same time, the demodulated data is input to the recording permission determining circuit 48. The recording permission determining circuit 48 determines from the demodulated data whether the disk 1 set in the apparatus is recordable when the disk 1 is taken out of the case or not.
In the Physical format information area in the Control data zone of the recording format data in
"type identification" is read and discriminated. In the case of this embodiment, since the recording out of the case is permitted, the permission condition is set in advance in the recording permission determination circuit 48 from the CPU 22.

When data is recorded, the input data is modulated into a DVD-RAM recording format by the modulation circuit 28 and recorded on the disk 1 via the pickup 3 by the recording circuit 29. At the time of recording, whether or not the next recording of the disc 1 is permitted is input by, for example, a user from the operation unit 62 and transmitted to the recording permission information creating circuit 31 via the CPU 22. If the recording is not permitted, as shown in the table of FIG. 18, the UDF standard Ver. Unit32Perm in 2.00
“Delete permission bit” of the issions information is set to “0”. To allow recording / rewriting, Un
It sets “Delete permission bit” of the it32 Permissions information to “1”.

If recording is not permitted, a DVD-RAM
Ver. 2.0 standard, “Disc identification inform
The “Write-inhibit flag for a disc” information of the “ation” is set to “1”. To allow recording / rewriting, refer to “Write-Write” in “Disc identification information”.
Set the "inhibit flag for a disc" information to "0".
The above is summarized as shown in the table of FIG. After that, “Delete permission bit” and “Write-inhibit”
flag for a disc ”information, the recording permission information creation circuit 3
1 and is recorded on the disk 1 via the modulation circuit 28 and the recording circuit 29 when recording on the disk.

Next, the operation at the time of recording will be described with reference to FIG. It is confirmed whether the disk 1 is set (step 601). If the disk 1 is set, Dsic is set.
The discrimination is performed (step 602). Disc discrimination includes, for example, CD, CD-R, CD-RW, DVD, DVD-R,
The type of a disc such as a DVD-RAM is determined. The pickup 3 is focused in (Step 603), and Le
Read the data recorded in the ad-in area and write-inhi
It is determined whether or not bit flag for adisc = "0" (step 604). If it is determined in step 604 that the disc is not a disc on which recording is permitted, normal playback is performed.
Exit this operation process. Next, the data recorded in the UDF format is read, and Delete permission bit =
It is determined whether it is "1" (step 605). Step 6
If it is determined in 05 that the disc is not a disc for which recording is permitted, the process exits from this operation process to perform normal reproduction.

When a recording command is received from the user (step 606), the user is prompted to input, for example, from an input device whether or not to permit recording or rewriting of the disc 1 next time. Next, it is determined whether or not recording is permitted (step 607). If recording is permitted again in step 607, delete
A permission bit = "1" is created and set in the recording permission creation circuit 49 (step 608). Furthermore, Lead-
Data to be recorded in in-area Write-inhibit flag f
or a disc = "0" is created and set in the recording permission creation circuit 49 (step 609).

If the recording is not permitted the next time in step 607, the Deletepermission bit =
"0" is created and set in the recording permission creation circuit 49 (step 610). Furthermore, create data Write-inhibit flag for a disc = “1” to be recorded in the Lead-in-area,
Set in the recording permission creation circuit 49 (step 61)
1). Delete permissio along with the data entered next
The n bits and the write-inhibit fiagfor a disc are recorded (step 612), and the recording process ends.

According to this embodiment, at the time of recording, whether or not the next data recording is permitted is created in a disk format and a file format and recorded on the disk 1. If it is set to, even if the disc is taken out of the case, even if there are no recording permission / non-permission claws, data can be added, deleted, or rewritten on the disc 1 without permission. Because of the elimination, it is possible to prevent recording and rewriting on this disc.

Further, there is a disadvantage that anyone can easily change from rewrite-inhibited to rewrite-enabled by the writing software using only the write-inhibited flag in the disc format standard. Is written, the conventional D
Even if a user who uses writing software that controls only the disk format such as VD-RAM writing software sets a disk written by this method in the drive, it will not be able to rewrite or erase. Can be.

[0100]

As described above in detail, according to the first to third aspects of the present invention, it is possible to reliably prevent data from being recorded on a disk by a recording device different from the device that recorded the data on the disk. In addition, data erasure prevention management can be reliably performed on a disk used out of the case.

According to the fourth aspect of the present invention, even when the disk is taken out of the case and used, data protection for permitting / prohibiting writing of the next data can be performed.

According to the fifth and sixth aspects of the present invention, even when a disk is recorded and reproduced by a plurality of drives, since the subsequent data is recorded by the driver which has first recorded the data, accidents such as destruction of the data may occur. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of an optical disk recording / reproducing apparatus of the present invention.

FIG. 2 is a schematic diagram illustrating a configuration example of a pickup illustrated in FIG. 1;

FIG. 3 is a flowchart showing an operation procedure at the time of data recording of the apparatus shown in FIG. 1;

FIG. 4 is a flowchart showing an operation procedure at the time of data rewriting of the device shown in FIG. 1;

FIG. 5 is a block diagram showing a second embodiment of the optical disc recording / reproducing apparatus of the present invention.

FIG. 6 is a flowchart showing an operation procedure at the time of data recording of the apparatus shown in FIG. 5;

FIG. 7 is a flowchart showing an operation procedure at the time of data rewriting of the device shown in FIG. 5;

FIG. 8 is a block diagram showing a third embodiment of the optical disc recording / reproducing apparatus of the present invention.

FIG. 9 is a flowchart showing an operation procedure at the time of data recording of the apparatus shown in FIG. 8;

FIG. 10 is a flowchart showing an operation procedure at the time of data rewriting of the device shown in FIG. 8;

FIG. 11 is a block diagram showing a fourth embodiment of the optical disc recording / reproducing apparatus of the present invention.

FIG. 12 is a block diagram showing a configuration example of a drive shown in FIG. 11;

FIG. 13 is a flowchart showing an operation procedure at the time of data recording of the apparatus shown in FIG.

FIG. 14 is a flowchart showing an operation procedure at the time of data rewriting of the device shown in FIG.

FIG. 15 is a flowchart illustrating a sixth embodiment of the optical disc recording / reproducing apparatus of the present invention.

FIG. 16 is a flowchart showing an operation procedure when rewriting an optical disc in a sixth embodiment.

FIG. 17 is a block diagram showing a seventh embodiment of the optical disc recording / reproducing apparatus of the present invention.

FIG. 18 is a table showing Ver 2.00 of the UDF standard.

FIG. 19 is a table showing an example of setting permission / prohibition of recording of next data created by the information creation circuit shown in FIG. 17;

20 is a flowchart showing an operation procedure at the time of data recording of the apparatus shown in FIG.

FIG. 21 is a block diagram showing a configuration example of a conventional optical disk recording / reproducing apparatus.

FIG. 22 is a plan view showing details of the protection case shown in FIG. 21;

FIG. 23 is a view for explaining the operation of the erasure prevention tab shown in FIG. 22;

[Explanation of symbols]

 Reference Signs List 1 optical disk 2 spindle motor 3 pickup 4 preamplifier 5 servo amplifier 6, 9, 16, 35 A / D converter 7, 10, 17 EQ and Amp 8, 11, 20 D / A converter 12, 13, 21 driver 14, 32 APC circuit 15 Decoder 18 Synchronization detection circuit 19 Spindle error circuit 22, 104 CPU 23, 105 Memory 24 Case 25 Erasure prevention tab 26 Erasure prevention detector 27 Demodulation circuit 28 Modulation circuit 29 Recording circuit 30 Recording device information generation circuit 31 Recording device Discrimination circuits 33, 34 Amplifier 41 Unique information creation circuit 42 Unique information extraction circuit 45 Erasure prevention tab 48 Recording permission discrimination circuit 49 Recording permission information creation circuit 62 Operation unit 100 Changer 101 Moving belt 102 Disk moving device 103 Motor 106 109 drive 110 to 112 disk case

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 17, 2000 (2003.
7)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG.

FIG. 2

FIG. 3

FIG.

FIG. 4

FIG. 6

FIG. 5

FIG. 7

FIG. 9

FIG. 23

FIG. 8

FIG. 10

FIG. 11

FIG.

FIG.

FIG. 13

FIG.

FIG. 14

FIG.

FIG. 16

FIG.

FIG.

FIG. 21

Claims (6)

[Claims] 1. An optical disc recording / reproducing apparatus for recording / reproducing data on / from an optical disc, wherein, when data is first recorded on the optical disc, apparatus information generating means for generating information for specifying the optical disc recording / reproducing apparatus; Device information recording means for writing device information generated by device information generation means on the optical disk; device information reproducing means for reading the device information from the optical disk when a previously recorded optical disk is set in the device; A comparing unit that compares the device information obtained by the reproducing unit with the device information generated by the device information generating unit; and when it is determined that the two device information match by the comparing unit, the already recorded Allows new data to be recorded on the optical disc, and if it is determined that the two device information do not match, Optical disc recording and reproducing apparatus characterized by comprising: a recording control means for inhibiting to record the new data in the already-recorded optical disc. 2. An optical disc recording / reproducing apparatus for recording / reproducing data on / from an optical disc, wherein, when data is first recorded on the optical disc, unique information creating means for creating unique information from the data; Unique information recording means for writing the unique information created by the means on the optical disc; unique information extracting means for reading the unique information from the optical disc when the already recorded optical disc is set in the device; and the unique information extracting means. Comparing means for comparing the obtained unique information with the unique information created by the unique information creating means; and when the comparing means determines that the two unique information coincide with each other, the new information is newly added to the already recorded optical disc. Recording of unique data is permitted, and when it is determined that the two Optical disc recording and reproducing apparatus characterized by comprising: a recording control means for inhibiting to record the new data in the recording of the optical disc. 3. An optical disc recording / reproducing apparatus for recording / reproducing data on / from an optical disc, wherein when first recording data on the optical disc, apparatus information generating means for generating information for specifying the optical disc recording / reproducing apparatus; Device information recording means for writing device information generated by device information generation means on the optical disk; device information reproducing means for reading the device information from the optical disk when a recorded optical disk is set in the device; When data is first recorded, unique information creating means for creating unique information from the data, unique information recording means for writing the unique information created by the unique information creating means to the optical disc, Unique information for reading the unique information from this optical disc when set in a device Extracting means, comparing the device information obtained by the device information reproducing means with the device information generated by the device information generating means, or comparing the unique information obtained by the unique information extracting means with the unique information. A comparing unit that compares the unique information created by the information creating unit; and if the two pieces of device information match each other, or the two pieces of unique information match each other. Recording of new data on the optical disc is permitted, and when it is determined that the two device information do not match, or when it is determined that the two unique information do not match, a new data is recorded on the already recorded optical disc. An optical disk recording / reproducing apparatus, comprising: a recording control unit for prohibiting data recording. 4. An optical disc recording / reproducing apparatus for recording / reproducing data on / from an optical disc, wherein when recording data on the optical disc, information on permission / non-permission of a disc format or a file format for the next recording of data. Data protection information creating means for creating, the recording means for recording the permission / non-permission information created by the data protection information creation means on the optical disc, and the permission from the already recorded optical disc set in the apparatus.
Information reading means for reading out the non-permission information; and recording control means for prohibiting the recording of new data on the already recorded optical disc when the non-permission information is read from the information reading means. An optical disk recording / reproducing apparatus characterized by the above-mentioned. 5. An optical disk recording / reproducing apparatus comprising: a plurality of drives for recording and reproducing data on an optical disk; and a function of moving the optical disk between the arbitrary drives and setting the optical disk in another drive. Drive information generating means for generating information for specifying the drive when data is first recorded; drive information recording means for writing drive information generated by the drive information generating means on the optical disc; Drive information reproducing means for reading the drive information from the optical disc when set in the drive; and comparing means for comparing the drive information obtained by the drive information reproducing means with the drive information generated by the drive information generating means. And both drive information by the comparing means When it is determined that they match, the drive is permitted to record new data on the already-recorded optical disc, and when it is determined that the two drive information do not match, new data is newly recorded on the already-recorded optical disc. Recording control means for prohibiting the recording of important data by the drive, and discriminating means for discriminating which drive has recorded the drive information from the drive information obtained by the drive information reproducing means. An optical disk recording / reproducing apparatus, comprising: moving means for moving and setting the optical disk in the drive determined by the determining means. 6. The optical disk recording / reproducing apparatus according to claim 5, wherein the drive information generated by the drive information generating means is stored in an external storage device.