JPH1040657A - Method and device for recording and reproducing information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the drop of a recording rate of data observed from the outside of an information recording/reproducing device due to the detection of the deterioration of a disk. SOLUTION: When the recording is made on the writable disk, the area consisting of continuous two or more t racks formed with plural sectors is recorded as one recording unit. When the head is moved to the recording unit, the deterioration detecting area which is capable of reproducing during the disk is turned at most two turns from coming up to the recording start sector while including at least one or more sectors in the recording unit, is reproduced to calculate the error rate, then the decision is made by using this rate whether the recording to the recording unit is allowed or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for detecting deterioration of a writable disc.

[0002]

2. Description of the Related Art Generally, in a disk on which information is repeatedly recorded optically or magneto-optically, the state of the area changes due to repeated writing, so that information cannot be correctly recorded. It is known that even functions cannot be corrected. In such an area, it is necessary to avoid recording information. Therefore, it is necessary to detect the degree of deterioration of the recording area.

Conventionally, as a method for detecting the degree of deterioration of a disk, for example, a method described in Japanese Patent Application Laid-Open No. 1-182974 is known. This is to detect the degree of deterioration of the disk from the amount of error correction by the error correction circuit when reading information. In addition, the life of the disk is detected by comparing the detected error correction amount with a preset reference value of the error correction amount.

FIG. 9 shows the configuration of an information recording / reproducing apparatus described in Japanese Patent Application Laid-Open No. 1-182974. The information written on the information recording medium 901 (optical disc) is read by the optical pickup 902 and sent to the signal reproducing circuit 903. Signal reproduction circuit 90
The read signal reproduced by the third error correction circuit 904
To perform error correction processing, and at the same time, detect the amount of error correction. The error correction amount data is sent to an error correction amount comparison circuit 905, where it is compared with a preset error correction amount. If the detected error correction amount is larger, the emergency signal generation circuit 906 is used.
Generates an emergency signal.

[0005] In addition, most of the optical disk devices currently on the market reproduce the recording area immediately after recording on the optical disk and determine whether or not the data has been correctly read. This makes it possible to detect deterioration of the optical disk.

[0006]

However, in such a conventional apparatus, the reproducing operation is generally performed on the entire recorded area. For example, when a recording area exceeding two consecutive tracks is recorded, a reproducing operation for detecting the deterioration of the disc also reproduces all the recording areas exceeding two consecutive tracks. Therefore, performing the recording and reproducing the recording area requires twice or more times as long as performing only the recording. Further, in such a method, the larger the amount of data to be recorded at a time, the longer the time required to detect the degree of deterioration of the recording area becomes, and the recording rate of data as viewed from outside the information recording / reproducing apparatus decreases. was there.

The present invention solves such a conventional problem. When recording data in a continuous recording area of two or more tracks, it is possible to detect the deterioration of a disc and to detect data from outside the information recording / reproducing apparatus. An object of the present invention is to provide an information recording / reproducing method and apparatus capable of reducing a decrease in a recording rate.

[0008]

According to the information recording / reproducing method and apparatus of the present invention, when performing recording on a writable disk, an area composed of two or more continuous tracks composed of a plurality of sectors is formed into one area. Recording is performed as a recording unit, a recording unit for recording information is selected, and when the head is moved to the selected recording unit, at least one or more sectors in the selected recording unit are included, and a recording start sector is included. A deterioration detection area that can be reproduced from the time when the disc reaches at most two revolutions is selected, the deterioration detection area is reproduced, an error rate is calculated, and the calculated recording unit is used to calculate the error rate. Judgment of whether or not recording of the selected recording unit is permitted is made.If recording of the selected recording unit is permitted, recording is performed in the selected recording unit and recording in the selected recording unit is prohibited. The one in which it was decided to return to operation of selecting a different recording units as the selected recording unit.

Further, according to the information recording / reproducing method and apparatus of the present invention, when recording is performed on a writable disc, an area composed of two or more continuous tracks composed of a plurality of sectors is recorded as one recording unit. A recording unit for recording information to be recorded is selected from recording units other than a recording unit whose recording is prohibited, recording is performed on the selected recording unit, and then at least one or more sectors in the selected recording unit are recorded. A deterioration detection area that can be reproduced during the period from the end of recording to the time when the disc rotates at most two times is selected, the deterioration detection area is reproduced to calculate an error rate, and the calculated error rate is calculated. Is used to determine whether or not to permit recording to the selected recording unit again.If recording to the selected recording unit is to be prohibited, Stores to prohibit the recording, in which it was decided that not used for the next and subsequent record.

According to the present invention, two continuous
When recording in a recording area equal to or more than a track, it is possible to reduce a decrease in the recording rate of data as viewed from outside the information recording / reproducing apparatus due to detection of deterioration of the disk.

Further, according to the present invention, even if the length of continuous recording changes, the number of rotations of the disk required for detecting the deterioration is constant at 2 rotations or less, and the recording on the disk is continued. When used for such an application, recording can be continued without lowering the recording rate due to deterioration detection or interrupting the continuation of recording.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, when recording on a writable disk, an area consisting of two or more continuous tracks consisting of a plurality of sectors is recorded on one disk. Recording is performed as a unit, and a recording unit for recording information is selected. When the head is moved to the selected recording unit, at least one or more sectors in the selected recording unit are included, and a recording start sector is included. After that, the deterioration detection area which can be reproduced during the rotation of the disc at most two times is selected, the error detection rate is calculated by reproducing the deterioration detection area, and the selected recording is performed using the calculated error rate. It is determined whether or not to permit recording on the unit, and if recording on the selected recording unit is permitted, recording is performed on the selected recording unit, and recording on the selected recording unit is performed. When the recording is stopped, the information recording / reproducing method is to return to the operation of selecting a recording unit different from the selected recording unit. This has an effect that the present invention can be applied to an optical disc device in which a decrease in the data recording rate seen from the outside of the information recording / reproducing device due to detection is reduced.

According to a second aspect of the present invention, there is provided a head for writing / reading data to / from a disk, a recording means for recording data on the disk via the head, and a head for writing information recorded on the disk. Reproducing means for reproducing the data from the disc, positioning means for positioning the head on a track on the disk, and error rate calculating means for correcting an error of information reproduced by the reproducing means and calculating an error rate. An information recording / reproducing apparatus, comprising: a controller for transmitting and receiving commands and information issued from outside the information recording / reproducing apparatus, and controlling the positioning means, the recording means, the reproducing means, and the like. A deterioration detection area selecting means for selecting an area for detecting deterioration of the recording medium, and determining whether or not to permit recording on the selected recording unit; An information recording / reproducing apparatus comprising: a recording unit replacement instruction issuing unit for issuing an instruction to replace a recording unit when recording on a selected recording unit is prohibited. When recording is performed in a recording area equal to or more than a track, there is an effect that a decrease in a recording rate of data as viewed from the outside of the information recording / reproducing apparatus due to deterioration detection of the optical disk is reduced.

According to a third aspect of the present invention, when recording is performed on a writable disk, an area composed of two or more continuous tracks composed of a plurality of sectors is recorded as one recording unit. A recording unit for recording information to be recorded is selected from recording units other than a recording unit whose recording is prohibited, recording is performed on the selected recording unit, and then at least one or more sectors in the selected recording unit are recorded. And at least 2 discs after recording is completed
Select the degradation detection area that can be played before rotating,
The error detection rate is calculated by reproducing the deterioration detection area, and it is determined whether or not to permit the re-recording to the selected recording unit using the calculated error rate, and the recording to the selected recording unit is performed. The information recording / reproducing method is characterized in that the recording of the selected recording unit is prohibited and the recording is not used for the next and subsequent recordings. In the case of recording in the area, there is an effect that a decrease in the data recording rate as viewed from the outside of the information recording / reproducing apparatus due to the detection of deterioration of the optical disk is reduced.

According to a fourth aspect of the present invention, there is provided a head for writing / reading data to / from a disk, a recording means for recording data on the disk via the head, and a head for writing information recorded on the disk to the head. Reproducing means for reproducing the data from the disc, positioning means for positioning the head on a track on the disk, and error rate calculating means for correcting an error of information reproduced by the reproducing means and calculating an error rate. An information recording / reproducing apparatus, comprising: a controller for transmitting and receiving commands and information issued from outside the information recording / reproducing apparatus, and controlling the positioning means, the recording means, the reproducing means, and the like. There is a management information recording area for recording the location of the recording unit for which recording is prohibited, and an area for selecting an area for detecting the deterioration of the disc. A detection area selecting means for determining whether or not to permit re-recording on the selected recording unit; and, when prohibiting recording on the selected recording unit, a recording prohibition instruction for issuing a recording prohibition instruction. Issuing means,
Information recording, comprising: recording prohibited area storage means for storing information of the recording prohibited area reproduced from the management information recording area and information of the recording prohibited area obtained from the recording prohibition command issuing means. This is a reproducing apparatus, and has an effect of reducing a decrease in the recording rate of data as viewed from outside the information recording / reproducing apparatus due to detection of deterioration of the optical disk when recording is performed on two or more continuous recording areas.

According to a fifth aspect of the present invention, there is provided the information recording / reproducing method according to the first or third aspect, wherein writing / reading to / from a disk is performed optically, and is applicable to an optical disk apparatus. It has the action of:

According to a sixth aspect of the present invention, there is provided the information recording / reproducing apparatus according to the second or fourth aspect, wherein writing / reading to / from a disk is performed optically, and is applicable to an optical disk apparatus. It has the action of:

An embodiment of the present invention will be described below with reference to FIGS. 1 to 8 by taking an optical disk device as an example of a specific information recording / reproducing method and apparatus. (Embodiment 1) FIG. 1 is an operation flow diagram of an information recording / reproducing apparatus according to a first embodiment of the present invention, and FIG. 2 is an operation flow when selecting a deterioration detection area in the first embodiment. FIG. 3 is a block diagram showing a configuration of the information recording / reproducing apparatus according to the first embodiment.

First, in FIG. 3, reference numeral 300 denotes an information recording / reproducing apparatus. In the information recording / reproducing apparatus 300, 301
Is an optical disc in which tracks composed of a plurality of sectors are formed in a spiral. Here, a track is counted as one track on the optical disk 301 for one round. The recording area on the optical disc 301 is an area composed of two or more continuous tracks as one recording unit. It is assumed that recording is performed for each recording unit, and recording does not start from a sector in the middle of the recording unit or end in a sector in the middle of the recording unit. By doing so, the degree of deterioration of the optical disk becomes uniform for each recording unit, and the degree of deterioration can be managed for each recording unit. Further, in the optical disc 301, the sector addresses are assigned numbers in ascending order from the outer periphery,
Recording is performed from the outer periphery to the inner periphery. Reference numeral 302 denotes an optical head. Reference numeral 303 denotes a recording unit that records information on the optical disk 301 via the optical head 302. Reference numeral 304 denotes a reproducing unit that reproduces information recorded on the optical disk 301 via the optical head 302. Reference numeral 305 denotes a positioning unit for positioning the optical head 302 on a track including a desired sector. Reference numeral 306 denotes a deterioration detection area selection unit that selects an area to be reproduced when reproducing information recorded on the optical disk 301 in order to detect deterioration of the optical disk. Reference numeral 307 denotes an error rate calculation unit that corrects an error of the information reproduced by the reproduction unit 304 and calculates an error rate. Reference numeral 308 compares the error rate R calculated by the error rate calculation means 307 with a predetermined error rate Rp, and if the calculated error rate R is larger than the predetermined error rate Rp, the recording unit is changed. Recording unit replacement instruction issuing means for issuing an instruction to perform Reference numeral 309 denotes a control unit of the information recording / reproducing device 300, which transmits and receives commands and information issued from the external host computer 310,
Control each part of the device. 310 is an information recording / reproducing device 30
0 is a host computer that issues information recording and reproduction instructions to the information recording and reproducing apparatus 300 and exchanges information with the information recording and reproducing apparatus 300.

FIG. 4 is a diagram showing a recording area on the optical disk 301 in the first embodiment, where 4a is a recording unit, 4b is a recording start sector, and 4c is a track jump.
d, and a reproducible sector, 4d is a track jump from the outermost periphery in the recording unit 4a to outside the recording unit, 4e is a reproducible sector just before the track jump 4f. Reference numeral 4f denotes a track jump from the track on the inner circumference side of one track from the outermost circumference in the recording unit to the outermost circumference in the recording unit.

The operation of the first embodiment will be described below based on the operation flow shown in FIG. Step 101: Receive a recording command issued from the host computer 310. Step 102: The control means 309 receives an instruction from the host computer 310 and
Then, an area in which the amount of information sent from the recording unit can be recorded is selected, and a track including a recording start sector of the recording unit is transmitted to the positioning unit 305. The recording unit selected at this time is 4a in FIG. Reference numeral 4b denotes a recording start sector of the selected recording unit. Step 103: the positioning means 305
The optical head 302 is moved to the track transmitted from No. 9. At this time, the reproducing means 304 outputs the address 4 of the destination sector (not shown) 4x moved via the optical head 302.
xa is read and transmitted to the deterioration detection area selection means 306. Thereafter, the optical head 302 enters a rotation waiting operation. Step 104: The deterioration detection area selection means 306 selects a deterioration detection area. How to select the deterioration detection area will be described later. Step 105: The deterioration detection area selected by the deterioration detection area selection means 306 is reproduced, and the error rate calculation means 307 calculates the error rate. Step 106: The recording unit replacement instruction issuing means 308
The error rate R calculated by the error rate calculation means 307 is compared with a preset error rate Rp. If R <Rp, the process proceeds to step 107. R ≧ Rp
In the case of, a recording unit replacement instruction is issued and
To start from the selection of the recording unit. At this time, the preset error rate Rp is determined by the error rate calculating means 3.
The error rate is set lower than the error rate that can be corrected by the error correction capability of 07. Step 107: The optical head 302 waits for rotation or performs a track jump to reach the recording start sector 4b of the recording unit, and records the data in the recording unit 4a. Step 108: After the recording is completed, the host computer 3
It waits for the next instruction from 10.

Here, the operation of selecting the deterioration detection area by the deterioration detection area selecting means 306 in the operation 104 of FIG. 1 will be described with reference to the operation flow of FIG. Step 201: The deterioration detection area selection means 306 calculates the address 4ya of the reproduction startable sector 4y (not shown). The position of the reproducible sector 4y is determined by the optical head 302.
While moving from the sector 4x to the sector 4y, the deterioration detection area selecting means 306 completes the selection of the deterioration detection area, and sets so that the optical head 302 can start reproduction.

The deterioration detection area is a reproduction startable sector 4y.
And when a track jump 4d from the outermost circumference in the recording unit 4a to outside the recording unit occurs,
Immediately before the track jump 4d, when the address 4ca of the reproducible sector 4c and the track jump 4f from the track on the inner circumference side of one track from the outermost circumference in the recording unit to the outermost circumference in the recording unit occur. In addition, it differs immediately before the track jump 4f due to the relationship between the sector address 4ea of the reproducible sector 4e and the address 4ba of the recording start sector 4b of the recording unit. Steps 202 and 203: The position of the reproduction startable sector 4y is determined. Step 204: Designate a deterioration detection area when 4ya ≦ 4ba. The start sector address of the deterioration detection area is
4ba, and the end address of the deterioration detection area is 4ca. In this case, after the optical head 302 reaches the recording start sector 4b of the recording unit, the selected deterioration detection area is reproduced, the deterioration of the optical disc is detected, and the recording start sector 4b is again detected.
In order to return to b, the rotation of the optical disk may be one rotation. Step 205: Designate a deterioration detection area when 4ba ≦ 4ya ≦ 4ca. The start sector address of the deterioration detection area is 4 ya, and the end address of the deterioration detection area is 4
ca. In this case, the recording start sector 4b of the recording unit
After the optical head 302 reaches the position, the rotation of the optical disk may be one rotation to reproduce the selected deterioration detection area, detect the deterioration of the optical disk, and return to the recording start sector 4b again. Step 206: Designate a deterioration detection area when 4ca ≦ 4ya. The start sector address of the deterioration detection area is
4ya, and the end address of the deterioration detection area is 4ea. In this case, after the optical head 302 reaches the recording start sector 4b of the recording unit, the selected deterioration detection area is reproduced, the deterioration of the optical disc is detected, and the recording start sector 4b is again detected.
In order to return to step b, the optical disc may be rotated twice.

As described above, according to the first embodiment of the present invention, the operation of detecting the deterioration of the optical disc 301
At most, the recording can be completed during two rotations of the optical disc 301. Therefore, when recording on two or more continuous tracks, the recording rate of the data as viewed from outside the information recording / reproducing apparatus by detecting the deterioration of the disc. Can be reduced. Also, since the degree of deterioration of the area to be recorded can be detected before recording,
No means for storing the degree of deterioration of the recording area is required. The area where the recording unit replacement instruction has been issued once is
By separately recording and taking measures to prevent the area from being selected as a recording unit twice, it is possible to eliminate unnecessary time caused by re-seeking to an area that has deteriorated so that it cannot be used for recording. .

In the first embodiment, the addresses of the sectors of the optical disk 301 are assigned in ascending order from the outer circumference, and the recording is performed from the outer circumference to the inner circumference. However, the addresses of the sectors are allocated in ascending order from the inner circumference. The present invention can be applied to a case where recording is performed from the inner circumference to the outer circumference.

In the first embodiment, the tracks on the optical disk 301 are described as being formed spirally. However, if the tracks are formed concentrically, the tracks must be always moved between the tracks. The only difference is that jumps occur, which does not hinder the implementation of the invention. Therefore, the present invention can be implemented even when using an optical disk having tracks formed concentrically.

Further, in the first embodiment, it has been described that the deterioration detection is always performed by the deterioration detection area selection means 306 before recording. However, the operation of detecting the deterioration is performed every predetermined number of recordings. Is also good. In this case, the interval of the number of times of recording for detecting the deterioration is determined by the error rate of the error rate calculation means 307 until the next deterioration detection operation is performed after the recording is permitted in the previous deterioration detection operation. The number of recordings is set so that the error amount does not exceed the capability. In order to implement this, in addition to the configuration of the information recording / reproducing apparatus 300 shown in FIG. 3, a means for counting the number of times of recording in each recording unit and storing the number is added.

Also, in the first embodiment, an optical disk device is taken as an example of a specific information recording / reproducing device. However, the present embodiment is not limited to an optical disk device, and information can be written on a writable disk. Can be applied to other information recording / reproducing devices that record the information.

(Embodiment 2) FIG. 5 is an operation flow chart of an information recording / reproducing apparatus according to a second embodiment of the present invention, and FIG. 6 is a flowchart for selecting a deterioration detection area in the second embodiment. FIG. 7 is a block diagram showing a configuration of an information recording / reproducing apparatus according to the second embodiment.

First, in FIG. 7, reference numeral 700 denotes an information recording / reproducing apparatus. In the information recording / reproducing device 700, 701
Numeral denotes an optical disk, which is provided with a management information recording area 701a for recording, on the optical disk 301 in the first embodiment, a recording-prohibited area as management information of the recording area. If the management information recording area 701a is distinguished from the area for recording other information, the optical disc 70
1 may be any position. 702 is an optical head, 703 is a recording unit, 704 is a reproducing unit, 705 is a positioning unit,
Reference numeral 707 denotes an error rate calculation means, which are the same as those in the first embodiment. Reference numeral 706 denotes a deterioration detection area selection unit that selects an area to be reproduced when reproducing information recorded on the optical disk 701 in order to detect deterioration of the optical disk 701. Reference numeral 708 compares the error rate R calculated by the error rate calculation means 707 with a predetermined error rate Rp. If the calculated error rate R is larger than the predetermined error rate Rp, the deterioration is determined. This is a recording prohibition command issuing unit that issues a command to prohibit recording on the detected recording unit. Reference numeral 709 denotes a management information recording area 70 of the optical disc 701.
This is a recording-prohibited area information holding unit that holds the information on the recording-prohibited area reproduced from 1a and the information on the recording-prohibited area obtained from the recording prohibition command issuing unit 708. A control unit 710 transmits and receives commands and information emitted from the external host computer 711 and controls each unit of the apparatus.

FIG. 8 is a diagram showing a recording area on the optical disk 701 in the second embodiment, where 8a is a recording unit, 8b is a recording end sector, and 8c is a track jump 8
8d is a track jump that moves from outside the recording unit to the innermost circumference of the recording unit,
8e is a sector that can be reproduced for the first time after the track jump 8d, 8f is a track jump that moves from the innermost track of the recording unit to one track outer circumference, and 8g is a sector that can be reproduced for the first time after the track jump 8f.

The operation of the second embodiment will be described below with reference to the operation flow shown in FIG. Step 501: The management information is reproduced from the management information recording area 701a of the optical disk 701 to be used.
01 is stored in the recording-prohibited area information holding unit 709. Usually, this operation is performed when the optical disc 701 is loaded on the information recording / reproducing apparatus 700. Step 502: Receive a recording command issued from the host computer 711. Between step 501 and step 502, an operation other than the recording operation, such as a reproducing operation, may be performed. Step 503: The control unit 710 selects a recording unit in which the amount of information sent from the host computer 711 can be recorded from an area where recording is not prohibited, based on the information held in the recording prohibited area information holding unit 709. Then, a track including a recording start sector (not shown) of the recording unit is transmitted to the positioning means 705. The recording unit selected at this time is 8a in FIG. 8b is a recording end sector of the selected recording unit. As in the case of the first embodiment, the recording unit is an area composed of two or more continuous tracks as one recording unit, recording is performed for each recording unit, and recording is performed in the middle of the recording unit. , And does not end at a sector in the middle of a recording unit. By doing so, the degree of deterioration of the optical disk becomes uniform for each recording unit, and the degree of deterioration can be managed for each recording unit. In the optical disc 701, sector addresses are assigned numbers in ascending order from the outer periphery, and are recorded from the outer periphery to the inner periphery. Step 504: Recording is performed in the selected area. The optical head 702, after recording in the end sector 8b of the recording unit,
Enter the rotation waiting state. Step 505: Here, the deterioration detection area selection means 706
Selects a deterioration detection area. How to select the deterioration detection area will be described later. Step 506: Reproduce the deterioration detection area selected by the deterioration detection area selecting means 706, and calculate the error rate by the error rate calculating means 707. Step 507: The recording inhibit command issuing means 708 compares the error rate R calculated by the error rate calculating means 707 with a preset error rate Rp. Here, the preset error rate Rp is set lower than the error rate that can be corrected by the error correction capability of the error rate calculation means 707. Step 508: If R ≧ Rp in step 507, the recording prohibition command issuing unit 708 issues a command to prohibit recording on the recording unit 8a, and sends the recording unit 8a to the management information recording area 701a and the recording prohibition area information holding unit 709. Record that the recording was prohibited. Thereafter, the flow shifts to step 509 to wait for the next command from the host computer 711. If the time for recording that the recording unit 8a has been prohibited from being recorded in the management information recording area 701a prevents execution of the next instruction from the host computer 711, the recording unit 8a is temporarily recorded. The fact that the prohibition is performed is merely recorded in the recording prohibition area holding means 709. For example, after the information recording / reproducing device 700 waits for a command from the host computer 711, it is recorded in the management information recording area 701a. May be.

If R <Rp in step 507, the flow shifts to step 509 in which the recording operation has been completed, and waits for the next command from the host computer 711.

Here, in step 505 of FIG.
The operation in which the deterioration detection area selection means 706 selects a deterioration detection area will be described based on the operation flow of FIG. Step 601: The deterioration detection area selection means 706 firstly addresses 8 y of a sector 8 y (not shown) from which reproduction for deterioration detection of the optical disc 701 can be started.
a is calculated. The position of the sector 8y at which reproduction can be started is such that the deterioration detection area selection unit 706 finishes selecting the deterioration detection area and the optical head 702 starts reproduction while the optical head 702 moves from the sector 8b to the sector 8y. Set to be able to. Step 602: The position of the reproduction startable sector 8y is determined. If the address 8ya of the reproduction startable sector 8y is immediately before the occurrence of the track jump 8d moving from the outside of the recording unit to the innermost circumference of the recording unit and is larger than the address 8ca of the reproducible sector 8c, step 6
03, otherwise, to step 604. Step 603: Correct the reproduction startable sector 8y.
The deterioration detection area selection unit 706 ends the selection of the deterioration detection area, and corrects 8ya to the address of the sector that can be reproduced after performing the track jump 8d. Then, the process proceeds to step 605. Step 604: Address 8 of reproduction startable sector 8y
The relationship between ya, the address 8ba of the recording end sector 8b, and the address 8ca of the reproducible sector 8c immediately before the occurrence of the track jump 8d moving from the outside of the recording unit to the innermost circumference of the recording unit is 8ba. ≦ 8ya ≦ 8c
The deterioration detection area in the case of a is specified. The start sector address of the deterioration detection area is 8ea. The end address of the deterioration detection area is set to 8 ba, and the selection of the deterioration detection area ends. In this case, after the recording is completed, the rotation of the optical disk may be one rotation until the selected deterioration detection area is reproduced, the deterioration of the optical disk is detected, and the operation returns to the end sector of the recording unit again. Step 605: Determine the position of the reproduction startable sector 8y. If the address 8ya of the reproduction startable sector 8y corrected in step 603 is larger than the address 8ba of the recording end sector 8b, the process proceeds to step 606; otherwise, the process proceeds to step 607. Step 606: Modify the reproduction startable sector 8y.
Reproduction is possible only after a track jump 8f for moving from the innermost track of the recording unit to the outer circumference of one track is performed and the rotation waiting operation is started, and after the deterioration detection area selection unit 706 has finished selecting the deterioration detection area. 8ya is corrected to the address of the correct sector. Then, the process proceeds to step 608. Step 607: Address 8ya of a sector where reproduction can be started
When the relationship between the address 8ba of the recording end sector and the address 8ea of the sector 8e that can be reproduced for the first time after the track jump 8d is 8ea ≦ 8ya ≦ 8ba, a deterioration detection area is designated. The start sector address of the deterioration detection area is set to 8 ya, the end address of the deterioration detection area is set to 8 ba, and the selection of the deterioration detection area ends. In this case, after the recording is completed, the selected deterioration detection area is reproduced,
The rotation of the optical disk may be one rotation before detecting the deterioration of the optical disk and returning to the end sector of the recording unit again. Step 608: Address 8ya of sector where reproduction can be started
The relationship between the address 8ga of the sector 8g that can be reproduced for the first time after the track jump 8f moving from the innermost track of the recording unit to the outer circumference of one track is 8ga ≦ 8y.
The deterioration detection area in the case of a is specified. In this case, the start sector address of the deterioration detection area is 8 ya, and the end address of the deterioration detection area is 8 ba. in this case,
The rotation of the optical disk may be two rotations before the recording is completed, the selected deterioration detection area is reproduced, the deterioration of the optical disk is detected, and the operation returns to the end sector of the recording unit again.

As described above, according to the second embodiment of the present invention, the operation of detecting the deterioration of the optical disc 701 is performed as follows.
At most, the recording can be completed during two rotations of the optical disc 701. Therefore, when recording is performed on two or more continuous tracks, the recording rate of the data as viewed from outside the information recording / reproducing apparatus by detecting the deterioration of the disc. Can be reduced. Also, since the degree of deterioration of the area to be recorded can be detected before recording,
No means for storing the degree of deterioration of the recording area is required.

In the second embodiment, the addresses of the sectors of the optical disk 701 are allocated in ascending order from the outer circumference, and the recording is performed from the outer circumference to the inner circumference. However, the addresses of the sectors are allocated in ascending order from the inner circumference. The present invention can also be applied to a case where recording is performed from the inner circumference to the outer circumference.

In the second embodiment, the tracks on the optical disk 701 are described as being formed spirally. However, if the tracks are formed concentrically, the tracks must be moved between the tracks. The only difference is that a track jump occurs,
It does not hinder the practice of the present invention. Therefore, the present invention can be implemented even when using an optical disk having tracks formed concentrically.

Further, in the second embodiment, the description has been given assuming that the deterioration is always detected after recording. However, the operation of detecting the deterioration may be performed every predetermined number of times of recording. In this case, the interval of the number of recordings for detecting deterioration is determined by the error correction capability of the error rate calculating means 707 between the time when recording is permitted in the previous deterioration detection operation and the time when the next deterioration detection operation is performed. The number of recordings is set so that the error amount does not exceed. To do this, see FIG.
In addition to the configuration of the information recording / reproducing apparatus 700 shown in (1), a means for counting the number of times of recording in each recording unit and storing the number is added.

Also, in the second embodiment, an optical disk device has been described as an example of a specific information recording / reproducing device. However, the present embodiment is not limited to an optical disk device, and information can be written on a writable disk. Can be applied to other information recording / reproducing devices that record the information.

[0040]

As described above, according to the present invention, when data is recorded in two or more continuous recording areas, a decrease in the recording rate of data as viewed from outside the information recording / reproducing apparatus due to deterioration detection of the optical disk is prevented. An advantageous effect of reducing the number is obtained.

[Brief description of the drawings]

FIG. 1 is an operation flowchart of an information recording / reproducing apparatus according to Embodiment 1 of the present invention.

FIG. 2 is an operation flow diagram when a deterioration detection area is selected according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of an information recording / reproducing apparatus according to Embodiment 1 of the present invention.

FIG. 4 is a schematic diagram showing a recording area of the optical disc according to the first embodiment of the present invention.

FIG. 5 is an operation flowchart of the information recording / reproducing apparatus according to Embodiment 2 of the present invention.

FIG. 6 is an operation flowchart when a deterioration detection area is selected according to the second embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of an information recording / reproducing apparatus according to Embodiment 2 of the present invention.

FIG. 8 is a schematic diagram showing a recording area of an optical disc according to Embodiment 2 of the present invention.

FIG. 9 is a block diagram of a conventional information recording / reproducing apparatus.

[Explanation of symbols]

 300, 700 Information recording / reproducing device 301, 701 Writable optical disk 302, 702 Optical head 303, 703 Recording means 304, 704 Reproducing means 305, 705 Positioning means 306, 706 Deterioration detection area selecting means 307, 707 Error rate calculating means 308 Recording unit replacement instruction issuing means 309, 710 Control means 310, 711 Host computer 708 Recording inhibition instruction issuing means 709 Recording inhibition area information holding means 701a Management information recording area 901 Information recording medium (optical disk) 902 Optical head 903 Signal reproduction circuit 904 Error correction circuit 905 Error correction amount comparison circuit 906 Emergency signal generation circuit

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G11B 7/00 9464-5D G11B 7/00 Y 20/12 9295-5D 20/12

Claims (6)

[Claims] When recording on a writable disc, an area consisting of two or more continuous tracks consisting of a plurality of sectors is recorded as one recording unit, and the recording unit for recording information is When the head is moved to the selected recording unit, at least one sector in the selected recording unit is included, and a period from when the recording start sector is reached to when the disk rotates at most two times. Select a degradation detection area that can be reproduced to, calculate the error rate by reproducing the degradation detection area, determine whether to allow or not to record to the selected recording unit using the calculated error rate, When recording in the selected recording unit is permitted, recording is performed in the selected recording unit, and when recording in the selected recording unit is prohibited, the selected recording unit is Is a method for returning to the operation of selecting another recording unit. 2. A head for writing / reading data to / from a disk, a recording means for recording on the disk via the head, a reproducing means for reproducing information recorded on the disk via the head, Positioning means for positioning the head on a track on a disk;
An error rate calculator for correcting an error of information reproduced by the reproducing unit, and calculating an error rate; and transmitting and receiving a command or information issued from outside the information recording / reproducing apparatus, the positioning unit, and the recording unit. An information recording / reproducing apparatus comprising a control unit for controlling the reproducing unit and the like, wherein a deterioration detection area selecting means for selecting an area for detecting deterioration of the disc; and permitting recording in the selected recording unit. Recording unit replacement command issuing means for issuing a command to replace the recording unit when determining whether or not to perform recording and prohibiting recording on the selected recording unit. Recording and playback device. 3. When recording on a writable disk, an area composed of two or more continuous tracks composed of a plurality of sectors is recorded as one recording unit, and recording is prohibited in a recording unit. Other than selecting a recording unit for recording information to be recorded, performing recording on the selected recording unit, thereafter including at least one or more sectors in the selected recording unit, and after the recording is completed, A deterioration detection area that can be reproduced before the disc rotates at most twice is selected, the deterioration detection area is reproduced, an error rate is calculated, and the calculated error rate is used to return to the selected recording unit. It is determined whether recording is permitted or not, and when prohibiting recording on the selected recording unit, storing that prohibition of recording on the selected recording unit is stored. An information recording / reproducing method, which is not used for subsequent recording. 4. A head for writing / reading to / from a disk, recording means for recording on the disk via the head, reproduction means for reproducing information recorded on the disk via the head, Positioning means for positioning the head on a track on a disk;
An error rate calculator for correcting an error of information reproduced by the reproducing unit, and calculating an error rate; and transmitting and receiving a command or information issued from outside the information recording / reproducing apparatus, the positioning unit, and the recording unit. An information recording / reproducing apparatus comprising a control unit for controlling the reproducing unit and the like, comprising a management information recording area for recording a location of a recording unit for which recording is prohibited on the disk, Deterioration detection area selection means for selecting an area for detecting deterioration, and determine whether or not to permit re-recording to the selected recording unit, when prohibiting recording to the selected recording unit, A recording prohibition command issuing means for issuing a recording prohibition command; information on a recording prohibition area reproduced from the management information recording area; and a record obtained from the recording prohibition command issuing means. Information recording and reproducing apparatus characterized by comprising a recording prohibition area storage means for storing the information of the stop region. 5. The information recording / reproducing method according to claim 1, wherein writing / reading to / from the disc is performed optically. 6. The information recording / reproducing apparatus according to claim 2, wherein writing / reading to / from a disk is performed optically.