JPH09245417A - Recording-reproducing method for optical disk - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent rewriting due to occurrence of a recording fault by always stepping in a write inhibit mode, irrespective of the presence or absence of a permission of write, in regard to a recording medium which is once taken out from a cartridge and then returned thereto again. SOLUTION: A recording-reproducing means 3 for an optical disk executes a control of laser power, binarization of a detection signal, generation of a recording-reproducing clock and processings for extraction, modulation and demodulation, error correction, etc. A takeout history detecting means 5 detects a takeout history of an optical disk medium 2 by detecting an irreversible optical disk takeout history discrimination mark attached to a cartridge mentioned above. A write permission detecting means can detect whether a permission of write is given or not, by providing a sensor hole as a write permission discrimination mark in the cartridge beforehand and by detecting this discrimination mark by a sensor.

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 for recording / reproducing an optical disk in which a rewritable or write-once type recording medium is housed in a cartridge in which a recording medium can be taken out and can be contained again. It is related to the playback method.

[0002]

2. Description of the Related Art FIG. 9 is a diagram showing a conventional optical disk device, optical disk medium, optical disk caddy, and optical disk cartridge. Optical disc media include those that are housed in a cartridge as represented by a magneto-optical disc, and those that directly treat a disc medium without a cartridge such as a CD-DA. For example, in a magneto-optical disk, STANDARD ECMA-201 (DA
TA INTERCHANGE ON 90mm OPTI
CAL DISK CARTRIDGES-CAPACI
TY: 230 MEGABYTES PER CARTRI
As in DGE-), the disc is confined in the cartridge and opening the cartridge shutter allows access to the media in the disc.

A CD-ROM, which can directly handle a medium, is sometimes used in a case called a caddy in order to protect it from fingerprints and dust. The device also has a mechanism corresponding to the form of the disc. FIG. 10 is a diagram showing the presence / absence of a caddy and a cartridge for the conventional optical disc type. For example, regarding rewritable optical disks, there are some that use caddies and some that are used as they are, but none that are contained in cartridges.

At present, there is no optical disk that has the same physical structure as the recording / reproducing type and the reproducing type. However, CD-
After the DA appeared as it was, the CD-R
OM uses a caddy to prevent dirt and maintain compatibility.
This is because the CD-ROM mainly records computer data, and data error is a fatal defect. CD-DA
Is required to have a lower error rate than that for recording music data.

In order to ensure compatibility that conventional optical disks can be used both as an optical disk that cannot be taken out from a cartridge and a bare disk such as a CD, the disk loading mechanism becomes complicated, and the cost of the apparatus increases. In order to avoid this problem, the optical disk medium contained in the cartridge can be taken out and re-accommodated, and recording / reproduction with an optical disk device that can handle only bare disks without cartridges, etc. In order to perform the above, it is considered that the optical disk medium is once taken out from the cartridge and is put in such a device.

[0006]

In the conventional optical disk recording / reproducing method, an optical disk which can be taken out from the cartridge is removed while dust is being taken out from the cartridge.
There is a problem that dust, fingerprints, etc. will cause terrible stains, and that a recording medium that has been taken out of the cartridge and then returned will be mistakenly written or erased on the recording medium that requires data protection. was there.

In order to avoid the above problems, it is possible to uniformly prohibit recording on a recording medium that has been taken out of the cartridge and then returned again. In this case, the recording should be performed at the user's request. There was a problem that I could not do it.

Further, even if the disc becomes dirty in this way, it is handled indistinguishably from a clean disc, so carelessly forgetting the reliability of the data to be recorded when writing, and it is important that the disc be highly reliable. There was a problem that caused mistakes such as using it for recording various data.

Further, when the cartridge is taken out once and recorded on a recording medium which may have become dirty, there is a problem in that it is mistakenly used for recording data that requires extremely high reliability. there were.

In addition, when recording is performed using a recording medium that may have been taken out of the cartridge and possibly soiled, such soiling creates a defective area on the disk, which lowers the reliability of data recording. was there.

Further, when recording is performed by using a recording medium that may have been taken out from the cartridge and possibly soiled,
If there is partial dirt, dust, fingerprints, or other dirt on the cartridge while it is being ejected, the defective area will increase, and the replacement area for replacing this defective area will be insufficient for recording. There was a problem that it could not be done.

The present invention has been made to solve the above problems, and can solve various problems that occur when the recording medium is returned to the cartridge again in the optical disc in which the recording medium can be taken out from the cartridge. It is an object to obtain an optical disk recording / reproducing method.

That is, there is provided an optical disk recording / reproducing method capable of avoiding mistaken writing or erasing on a recording medium requiring data protection for a recording medium which is first taken out from a cartridge and then returned again. To aim.

It is another object of the present invention to provide an optical disk recording / reproducing method capable of recording on a recording medium which has been once taken out from the cartridge and then returned again, according to the user's request.

Further, the optical disk recording / reproducing which can always prompt the user to recognize that the recording medium which is once taken out from the cartridge and may be soiled is used, and the reliability of the data to be recorded can be called. Aim to get a way.

Further, when the recording medium is taken out from the cartridge once and recorded on a recording medium which may have become dirty, it is possible to avoid an error that is mistakenly used for recording data which requires very high reliability. The purpose is to obtain a recording / reproducing method.

It is another object of the present invention to provide an optical disk recording / reproducing method capable of improving the reliability of data recording when recording is performed by using a recording medium which may be taken out once from a cartridge and possibly soiled.

Further, when recording is performed by using a recording medium which may be once taken out from the cartridge and may have been soiled, there is a portion of severe soiling such as dust, dust, fingerprints, etc., which was taken out from the cartridge. Even so, it is an object of the present invention to provide an optical disc recording / reproducing method capable of preventing the recording from becoming impossible.

[0019]

According to a first aspect of the present invention, there is provided an optical disc recording / reproducing method for an optical disc in which a rewritable or write-once type recording medium is contained in a cartridge in which the recording medium can be taken out and can be contained again. In the optical disc recording / reproducing method for performing recording / reproducing, from the cartridge, immediately after the optical disc is loaded into the optical disc device for recording / reproducing on the optical disc, or after the optical disc device in which the optical disc is already loaded is turned on. The presence or absence of the history of ejecting the recording medium is detected, and when it is detected that there is the history of ejecting the recording medium from the cartridge, the optical disc device is forcibly set to the write-protect mode. Is characterized by.

In the optical disc recording / reproducing method according to a second aspect, recording / reproducing is performed on an optical disc in which a rewritable or write-once recording medium is housed in a cartridge in which the recording medium can be taken out and can be re-stored. In the optical disc recording / reproducing method, immediately after the optical disc is loaded into an optical disc device for recording / reproducing on / from the optical disc,
Alternatively, after turning on the power of the optical disc device in which the optical disc is already loaded, the presence or absence of the history of the recording medium being taken out from the cartridge is detected,
When it is detected that the recording medium has no history of being taken out of the cartridge, the optical disk device is set to the recordable mode, and it is detected that the recording medium has been taken out of the cartridge. In this case, when a command signal for setting the optical disk device to the recordable mode is input, the setting of the optical disk device is changed to the recordable mode, and when the command signal is not input, the optical disk device is set to the recording prohibit mode. It is characterized by setting.

According to a third aspect of the present invention, there is provided an optical disc recording / reproducing method in which the recordable mode whose setting has been changed is valid only for a predetermined period from the setting change.

According to a fourth aspect of the present invention, there is provided an optical disc recording / reproducing method in which the set recordable mode is unloaded from the optical disc device after the setting change or the loaded optical disc is unloaded. It is designed to be effective until the power of the is cut off.

According to a fifth aspect of the present invention, there is provided an optical disc recording / reproducing method, wherein recording / reproducing is performed on an optical disc in which a rewritable or write-once type recording medium is stored in a cartridge in which the recording medium can be taken out and can be re-stored. In the optical disc recording / reproducing method, immediately after the optical disc is loaded into an optical disc device for recording / reproducing on / from the optical disc,
Alternatively, after turning on the power of the optical disc device in which the optical disc is already loaded, the presence or absence of the history of the recording medium being taken out from the cartridge is detected,
When it is detected that the recording medium has no history of being taken out of the cartridge, the optical disk device is set to the recordable mode, and it is detected that the recording medium has been taken out of the cartridge. In this case, when a command signal for setting the optical disk device to the recordable mode is input, the setting of the optical disk device is changed to the recordable mode, and the unrecorded area of the optical disk is certified to detect the defective area. It is characterized by being excluded from the recording area.

According to a sixth aspect of the present invention, there is provided an optical disk recording / reproducing method, wherein replacement processing for replacing the defective area with a replacement area is performed, and the replacement area is recorded from an optical disk containing a recording medium having no history of removal from the cartridge. Is also intended to be enlarged.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. Embodiment 1. First, an optical disk device used in each embodiment of the present invention will be described. FIG.
FIG. 1 is a block diagram showing a configuration of an optical disc device used in each embodiment of the present invention. In the figure, 1 is an optical disk cartridge, and 2 is an optical disk medium, which is one of a reproduction-only type, a write-once type, and a recording / reproducing type. Further, a recording / reproducing or reproducing of information on only one side (hereinafter abbreviated as a single-sided disc) and a recording / reproducing or reproducing of information on both sides (hereinafter abbreviated as a double-sided disc). ).

The optical disk cartridge described here is similar to the optical disk caddy in that the optical disk medium (recording medium) accommodated (accommodated) can be taken out and the taken optical disk medium can be re-accommodated. However, although it is not basically taken out, it is taken out from the cartridge when the optical disk medium contained in the cartridge is put into the reproducing apparatus corresponding to the exposed optical disk medium not housed in the cartridge.

When the optical disk medium is first taken out, an irreversible identification mark (which cannot be restored once marked) is added to the cartridge. Here, as such an identification mark, for example, a claw-shaped part of the cartridge is bent so that the sensor hole appears. The optical disc device is provided with a sensor including a light emitting element and a light receiving element corresponding to the sensor hole, and the light receiving element receives the light passing through the sensor hole from the light emitting element to detect the identification mark. .

Reference numeral 3 denotes an optical disk recording / reproducing means, which performs processing such as laser power control, detection, signal binarization, recording / reproducing clock generation, extraction, modulation / demodulation, and error correction.
Reference numeral 4 denotes an ejection history detecting means for recognizing whether the optical disc medium 2 has been ejected from the optical disc cartridge 1. The ejection history detecting means 4 detects the ejection history of the optical disc medium 2 by detecting the irreversible optical disc ejection history identification mark added to the cartridge. Reference numeral 7 is a write permission detecting means for detecting whether or not the user has permitted writing (recording) to the disk medium 2. Here, similarly to the above-mentioned optical disc ejection history identification mark, a sensor hole is provided in the cartridge as a write permission identification mark, and whether or not writing is permitted is detected by detecting this identification mark by the sensor of the optical disc device. To detect. 5
Indicates the ejection history detection information output from the ejection history detection unit 4 indicating whether the disc has been ejected from the cartridge, and whether the disc in the apparatus is for reproduction only from the optical disc 2 via the optical disc recording / reproducing unit 3. The optical disk recording / reproducing means 3 is controlled based on information such as whether recording / reproducing is possible and a write mode signal which is a command signal which is input to the apparatus when a user wants to perform forced recording and sets the apparatus into a writing (recording) mode. It is an optical disk device control means for controlling. The control contents are related to permission / prohibition of recording, etc., and details thereof will be described in the section showing the processing flow of the apparatus.

The recording / reproducing method according to the first embodiment of the present invention will be described below. FIG. 2 is a flowchart showing the recording / reproducing method (initial processing method after loading the optical disk cartridge) according to the first embodiment of the present invention. In addition, here, the optical disk medium in the cartridge is simply referred to as a disk. In FIG. 2, first, after inserting the cartridge into the apparatus (S1), it is checked whether or not a disk is contained in the cartridge (S2). If there is no disc in the cartridge,
The cartridge is discharged from the device (S3), and the process is completed.
If there is a disc in the cartridge, then
It is checked whether the disks in the cartridge are correctly inserted on the front and back (S4). Here, for example, it is possible to record information on the back and front sides at a specific portion of the disc, and detect this information to check whether the disc is correctly inserted (front side or back side). If it is not inserted correctly, the cartridge is discharged from the device (S3), and the process ends.

If the front and back sides are correctly inserted, then the type of read-only, write-once, and read / write discs is specified (S5). Here, for example, an area for recording information about the disc type is provided in a specific portion of the disc, and the type of the disc can be specified by detecting the information about the disc type in this area. If the disc type is not recordable, that is,
In the case of the reproduction-only type, the device is set (set) in a mode in which only the device can be reproduced (S7), and the initial processing is completed.
In the case of the recordable type, that is, in the case of the write-once type and the recording / reproducing type, it is next checked whether or not the disc has been ejected from the cartridge (disc ejection history) (S
6). Here, as described above, for example, an irreversible sensor hole for identifying whether or not the disc has been ejected is provided in the cartridge, and the disc is ejected from the cartridge by recognizing the sensor hole in the device. Check if there isn't.

If the device has not been taken out, the device is set (set) in a recordable / reproducible mode (S8), and the initial processing is completed. If the disc has been taken out from the cartridge, only the reproduction is enabled (S13). That is, even if the disc medium is a recording / reproducing type and the disc is being taken out of the cartridge, the apparatus is forcibly initialized to the recording prohibition mode. After completing the initial processing in this way, the user performs recording, reproduction, and the like. Here, the recordable mode whose setting has been changed is valid only for a predetermined period from the setting change.

In a recordable optical disc, when recording is performed without a cartridge, dust, fingerprints, or other stains tend to adhere to the disc to cause defective sectors or blocks, resulting in an increased error rate and a medium. Cause deterioration of reliability. Therefore, in the case of a recordable / reproducible type optical disc, it is common to store the disc medium in a cartridge to protect it from dust, fingerprints, and the like.

However, when a read-only optical disk without a cartridge has become widespread and a new recording / playback type optical disk that is format compatible with the read-only disk newly appears, the recording / playback type optical disk contained in the cartridge is used. In order to make a disc playable by a device that plays a read-only disc without a cartridge, it is conceivable to configure the cartridge so that the disc can be taken out from the cartridge. However, since the disc once taken out from the cartridge may be dirty, writing is prohibited by recognizing that the disc has been taken out by the device. This is the reason why the irreversible sensor hole for identifying whether or not the disc has been ejected is provided in the cartridge of the disc described above as an example.

As described above, when the disc medium is the recording / reproducing type and the disc is ejected from the cartridge, the recording prohibition mode is forcibly applied to the recording medium ejected from the cartridge and then returned again. Since the device is initialized, it is possible to avoid mistaken writing or erasing data on a recording medium requiring data protection.

The recordable mode whose setting has been changed is
The recording enabled mode in which the setting is changed is not valid only for a predetermined period from the setting change, and the loaded optical disc is unloaded from the optical disc device after the setting change, or the optical disc device is set. It may be valid until the power supply of is cut off. In this way, if the user enables forced recording once, it will continue until the cartridge is unloaded from the device, so it is necessary to reset to the forced enable mode when recording small data many times. There is no.

Embodiment 2 The recording / reproducing method according to the second embodiment of the present invention will be described below. 3 and 4 are flowcharts showing a recording / reproducing method (initial processing method after loading an optical disk cartridge) according to a second embodiment of the present invention. In addition, here, the optical disk medium in the cartridge is simply referred to as a disk. Further, the process up to the step S6 of checking whether or not the disc has been taken out from the cartridge (disc taking-out history) is the same as that of FIG. 2 described in the first embodiment, and therefore the explanation is omitted here.

If the disc has been taken out from the cartridge, it is checked whether or not the user has issued a forced recording (writing) request, as shown in FIG. 4 (S9).
If there is no compulsory recording request, the device is set (set) in a mode in which only reproduction is possible (S10), and the initial processing is terminated. If there is a forced recording request, the apparatus is set (set) in a recordable / reproducible mode (S11), and the initial process ends.

As described in the first embodiment, it is desirable from the viewpoint of the error rate to prohibit writing even on the disc once ejected from the cartridge. However, if, for example, a disc with only a few recordings is ejected from the cartridge, it is very wasteful that the disc can no longer be recorded. In view of this, in the present embodiment, a mode of requesting forcible recording that enables writing is provided after the user is aware that the error rate is high. As a result, it becomes possible to record even on a recordable optical disk once taken out from the cartridge at the request of the user.

In the case of an optical disk device in which it is impossible to discriminate whether or not the disks in the cartridge are correctly inserted in the front and back, even if the writable disk has not been taken out from the cartridge, it cannot be written once. Control. As a result, when the user mistakenly puts the front and back of the recording medium in the cartridge, the mark indicating whether or not the writing is permitted on the cartridge does not match the necessity of the writing permission of the recording medium in the cartridge, or the recording is prohibited. It is possible to avoid mistakes such as erroneously writing on a blank surface.

Further, the processing after the flow shown in FIG. 3 can be performed as shown in FIG. That is, first, if the disc has been ejected from the cartridge, it is checked whether or not there is a forced recording request from the user (S9). If there is no compulsory recording request, the device is set (set) in a mode in which only reproduction is possible (S10), and the initial processing is terminated. If there is a compulsory recording request, it is checked whether or not recording (writing) is permitted on the disc (S1).
2). Here, as shown in the first embodiment, a sensor hole is provided in the cartridge as a write permission identification mark and the identification mark is detected by a sensor of the optical disc device, as in the above-mentioned optical disc ejection history identification mark. Detects whether writing is permitted. If the disc is not record-enabled,
Set (set) the device in a mode that allows playback only (S1
0), the initial process ends. If the disc is record-enabled, the device is set (set) in a recordable / reproducible mode (S11), and the initial process is terminated.

As described above, when the disc is re-stored in the cartridge, even if the user makes a forced recording request, if the recording is not permitted by the identification mark provided on the cartridge, the apparatus is set to the recordable mode. Is set, it is possible to prevent erroneous recording even if there is a forced recording request.

Embodiment 3. In the above-described first embodiment, when the disc has been taken out from the cartridge, the device is forcibly initialized to the recording prohibition mode so that the disc medium is recordable and reproducible. However, it is possible that the user may want to perform recording after the initial setting. In the present embodiment, even if the disc medium is a recording / reproducing type, after the device is forcibly initialized to the recording prohibited mode, the device is reconfigured so that recording (writing) is possible at the request of the user. The optical disc recording method according to the third embodiment will be described below.

FIG. 6 is a flow chart showing the flow of the recording / reproducing method according to the third embodiment of the present invention. After the cartridge is inserted into the optical disk device and the initial processing is completed,
The setting of the device is changed (reset) to the recordable mode. In FIG. 6, first, it is checked whether the disc type is a recordable type (S14). In the case of a read-only disc, the recording request is rejected (S16) and the setting change process is terminated. In the case of the recordable type, the device is set to the recordable / reproducible mode (S15). Next, in response to a recording start command from the user,
The apparatus records data on the optical disc (S17). After the recording is finished, it is checked whether the disc has been taken out from the cartridge (S18). If it has not been taken out from the cartridge, the recording / playback enable mode ends. If the device has been taken out, the device is set to a mode in which only reproduction is possible (S19), and the process ends.

By such a method, recording can be performed at the request of the user even when the apparatus which is set to the recording-prohibited mode is capable of only normal reproduction for the disk taken out from the cartridge. Since the forced recording mode is canceled immediately after recording the data once, it is possible to prevent the forced recording after that without being recognized by the user.

In the flow shown in FIG. 6, after checking whether the disc type is a recordable type (S14), if the disc type is a recordable type as shown in FIG. It is checked whether or not recording (writing) is permitted (S20). If writing is not permitted,
The recording request may be rejected (S16), the setting change process may be terminated, and if the writing is permitted, the device may be set to the recording / reproducing mode.

Fourth Embodiment In each of the above embodiments, when the user's forced write request is approved, the read / write mode is changed from the read-only mode to the record / playback enabled mode even if the read / write optical disk has been taken out from the cartridge. changed. However, it is considered that the optical disc medium is accompanied by the deterioration of the data error rate due to dust and the like. Therefore, in the present embodiment, after setting forcible recording, only the unused area of the disc is
Try to certify the disk status again. It should be noted that certification is performed even when the disc is used for the first time.

In the certification, there is an operation of checking whether or not there is a defect in the sector on the disk, and if there is a defect, register it in the defect management table and allocate the address of the defective sector to the next sector without using that sector. FIG. 8 is a diagram showing a certifying method according to the fourth embodiment.
FIG. 8A shows the initial state of the disc. Since it has not been certified yet, no address is assigned and no bad sector is known. FIG. 8B shows the disc state immediately after certification. Originally, since the location of address 4 is a defective sector, the addresses are assigned one after the other. FIG. 8C shows a state in which data is recorded. Data is recorded by skipping defective sectors. If the disk is ejected from the cartridge, recording cannot be performed after address 8 unless the forced recording mode is changed. However, since the disk is once taken out from the cartridge, there is a possibility that defective sectors are increasing. Therefore, when the disk device receives a request for the forced recording mode from the user, the certifying process is performed again for the address 8 and thereafter. FIG.
In (d), the address 8 and subsequent addresses are certified once again, and the address 12 is a defective sector.
It is assigned with a shift.

As described above, by performing the certification of the unrecorded area again before the forced recording, the defective area and the defective area can be removed prior to the recording of the unrecorded area. Therefore, the reliability of the recorded data after the forced recording is improved. It is possible to improve the data transfer rate, and it is possible to prevent rewriting in advance due to the occurrence of a recording defect during recording, so that it is possible to improve the data transfer rate during recording.

Now, in general, a defective sector that appears after certifying is replaced by using a replacement area provided on the disk. The spare area is an area used as a substitute when data cannot be correctly recorded in the sector to be recorded. Therefore, by performing the certification of the unrecorded area again before the forced recording, it is possible to reduce the replacement area usage rate in the subsequent recording and the like.

In the fourth embodiment, after the forced recording is set, it is checked whether or not there is a defect in the sector on the disk only in the unused area of the disk.
If there is, it is explained that the certification is performed by registering it in the defect management table and allocating the address of the defective sector to the next sector without using that sector, but using the replacement area provided on the disk for the defective sector. Then, the certification may be performed by performing a replacement process. In this case, it is conceivable that the replacement area (spare area) used for the replacement processing in the certification is made larger than the optical disk containing the optical disk medium having no history of removal from the cartridge. As a result, even if there is a large amount of dirt, dust, fingerprints, or other dirt that has adhered to the cartridge while it is being ejected, the replacement area is widened and it is impossible to record because the replacement area is exhausted. Can be prevented. Further, since the replacement area when there is no history of taking out from the cartridge can be suppressed to a necessary minimum, a large recording capacity can be secured.

[0051]

Since the present invention is constructed as described above, it has the following effects.

In the optical disk recording / reproducing method according to the present invention, the recording medium which is once taken out from the cartridge and then returned is always in the write-inhibit mode regardless of whether the writing is permitted or not. It is possible to avoid erroneous writing or erasing on the recording medium.

Further, since it is possible to record on the recording medium which is once taken out from the cartridge and then returned again, it is possible to make the remaining recording capacity of the optical disk effective as compared with the case where writing is completely prohibited. Available.

Further, since the setting change to the writable mode is allowed only for a predetermined period after the user's setting change command, the user uses a recording medium that may be taken out from the cartridge once and possibly soiled. It is possible to call attention to the reliability of the data to be recorded. Further, it is possible to avoid a mistake that is mistakenly used for recording data that requires extremely high reliability.

Alternatively, the setting change to the writable mode is permitted only after the user issues a setting change command until the optical disk is ejected from the apparatus or the apparatus is turned off.
Since the setting change to the writable mode disappears once the optical disc is ejected from the device, if the risk of taking it out from the cartridge and recording on a recording medium that may be dirty is incurred, always confirm with the user. As a result, it is possible to avoid a mistake that is mistakenly used for recording data that requires extremely high reliability.

Further, in the optical disc recording / reproducing method of the present invention, when the recording medium which is once taken out from the cartridge and possibly dirty is used, the unrecorded area is certified and the defective area or the defective area is replaced. Therefore, it is possible to improve the reliability of data recording. Further, since it is possible to prevent rewriting in advance due to the occurrence of recording failure during recording, it is possible to improve the data transfer rate during recording.

Further, since the replacement area used for the replacement processing in the certification is made larger than the replacement area in the case where there is no history of taking out from the cartridge, dust attached while the cartridge is taken out,
Even if there is a partial stain such as dust or fingerprints, it is possible to largely prevent the replacement area from being exhausted and being unable to record. Further, since the replacement area when there is no history of taking out from the cartridge can be suppressed to a necessary minimum, a large recording capacity can be secured.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an optical disc device used in each embodiment of the present invention.

FIG. 2 is a flowchart of an optical disc recording / reproducing method according to the first embodiment of the present invention.

FIG. 3 is a flowchart of an optical disc recording / reproducing method according to a second embodiment of the present invention.

FIG. 4 is a flowchart of an optical disk recording / reproducing method according to a second embodiment of the present invention.

FIG. 5 is a flowchart of an optical disk recording / reproducing method according to a second embodiment of the present invention.

FIG. 6 is a flowchart of an optical disc recording / reproducing method according to a third embodiment of the present invention.

FIG. 7 is a flowchart of an optical disk recording / reproducing method according to a third embodiment of the present invention.

FIG. 8 is a diagram showing a certify method in an optical disc recording / reproducing method according to a fourth embodiment of the present invention.

FIG. 9 is a diagram showing types of conventional optical disc media, optical disc caddies, optical disc cartridges, and optical disc devices.

FIG. 10 is a diagram showing the presence / absence of a caddy and a cartridge for the conventional optical disc type.

[Explanation of symbols]

1 optical disk cartridge, 2 optical disk medium, 3
Optical disk recording / reproducing means, 4 ejection history detecting means,
5 optical disk device control means, 6 optical disk caddy, 7 write permission detection means.

Front page continuation (72) Inventor Kimihide Nakatsu 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd. (72) Innovator Yoshinobu Ishida 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Denki Within the corporation

Claims (6)

[Claims] 1. An optical disk recording / reproducing method for performing recording / reproducing on an optical disk in which a rewritable or write-once recording medium is housed in a cartridge in which a recording medium can be taken out and which can be re-stored. Immediately after the optical disc is loaded in the optical disc device for reproduction, or after the optical disc device in which the optical disc is already loaded is powered on, it is detected whether or not there is a history of the recording medium being taken out from the cartridge, and the recording is performed. An optical disk recording / reproducing method comprising forcibly setting the optical disk device to a write-protection mode when it is detected that there is a history that the medium has been taken out from the cartridge. 2. An optical disk recording / reproducing method for recording / reproducing an optical disk, wherein a rewritable or write-once recording medium is housed in a cartridge in which a recording medium can be taken out and can be re-housed. Immediately after the optical disc is loaded in the optical disc device for reproduction, or after the optical disc device in which the optical disc is already loaded is powered on, it is detected whether or not there is a history of the recording medium being taken out from the cartridge, and the recording is performed. If it is detected that there is no history that the medium has been taken out from the cartridge, the optical disk device is set to a recordable mode, and it is detected that there is a history that the recording medium has been taken out from the cartridge. Command signal for setting the optical disk device to a recordable mode Is input, the optical disk device is set to a recordable mode, and when the command signal is not input, the optical disk device is set to a recording prohibition mode. 3. The recordable mode in which the setting is changed,
The optical disc recording / reproducing method according to claim 2, wherein the setting is valid only for a predetermined period from the setting change. 4. The recordable mode in which the setting is changed,
3. The optical disc recording according to claim 2, wherein after the setting is changed, the loaded optical disc is valid until it is unloaded from the optical disc device or until the power of the optical disc device is shut off. How to play. 5. An optical disk recording / reproducing method for recording / reproducing an optical disk, wherein a rewritable or write-once recording medium is housed in a cartridge in which a recording medium can be taken out and can be re-stored, Immediately after the optical disc is loaded in the optical disc device for reproduction, or after the optical disc device in which the optical disc is already loaded is powered on, it is detected whether or not there is a history of the recording medium being taken out from the cartridge, and the recording is performed. If it is detected that there is no history that the medium has been taken out from the cartridge, the optical disk device is set to a recordable mode, and it is detected that there is a history that the recording medium has been taken out from the cartridge. Command signal for setting the optical disk device to a recordable mode Is input, the setting of the optical disk device is changed to a recordable mode, and the unrecorded area of the optical disk is certified to exclude the defective area from the unrecorded area. 6. A replacement process for replacing the defective area with a replacement area, and the replacement area is enlarged more than an optical disc containing a recording medium having no history of removal from the cartridge. 5. The optical disc recording / reproducing method according to item 5.