JPH0935409A - Optical disc drive - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a highly reliable optical disc drive having high processing speed in which read/write operation can be carried out under optimal conditions at all times. SOLUTION: When an optical disc 10 is ejected from an optical disc drive 9 using the an unused area of optical disc 10, control parameter information is written therein by means of a control parameter writing mechanism section 7. When the optical disc is loaded into the optical disc drive, the control parameter information is read out and utilized for following read/write operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk device, and more particularly to an optical disk device having a function of saving control parameter information for improving reliability and increasing processing speed.

[0002]

2. Description of the Related Art In a conventional optical disk device, power data during a read operation, power data during a write operation, control of the number of seek retries, the number of read retry counts, the number of off-track counts, the number of defective sectors, the number of certifying executions, etc. The parameter information for control is stored in the random access memory (RAM). Therefore, when the optical disk (medium) is exchanged or the power is turned off, the control parameter information stored in the RAM disappears. I had done it.

[0003]

As described above, in the conventional optical disc device, the control parameter information disappears when the optical disc is replaced or the power is turned off. It has a drawback that it cannot perform the read operation or the write operation that has been used, and therefore cannot perform the read operation or the write operation under the optimum conditions, resulting in poor reliability and slow processing speed. Have a point.

[0004]

An optical disk apparatus of the present invention has an inner manufacturer zone, an outer manufacturer zone and a guard band, which are unused areas, in an inner band and an outer band outside the user area, respectively. A SCSI controller that uses an optical disc having a zone boundary unused area, a buffer area, and a test area, which are unused areas in a user band, and is connected to a host device to exchange information with the host device; A head for writing or reading information to and from the optical disc, a control unit for controlling the writing or reading operation of information by the head with respect to the optical disc, and for controlling the overall operation of the optical disc device, and a predetermined control parameter information. The pho A control parameter editing mechanism section for editing the same, a random access memory for storing the control parameter information edited by the control parameter editing mechanism section, and a random access memory for ejecting the optical disc from the optical disc device. And a control parameter writing mechanism section for writing the control parameter information stored in the optical disc to the unused area of the optical disc through the head, and the control parameter writing mechanism section for writing the optical disc when the optical disc is inserted into the optical disc device. And a control parameter reading mechanism for reading the control parameter information written in the use area via the head.

[0005]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a development view showing a zone layout of the optical disc of the embodiment of FIG. 1, and FIG. 3 is each user band of the optical disc of the embodiment of FIG. 4 is a format diagram showing the control parameter information of FIG. 4, and FIG. 4 is a format diagram showing the control parameter information of the entire optical disc of the embodiment of FIG.

The optical disk device 9 of FIG. 1 is connected to the host device 1 by a SCSI controller 2,
The CSI controller 2 exchanges information with the host device 1. The control unit (CPU) 3 controls the writing operation or the reading operation of information of the head 8 with respect to the optical disc 10, and also controls the overall operation of the optical disc device 9. When ejecting the optical disc 10 from the optical disc device 9, the control parameter writing mechanism unit 7 writes the control parameter information stored in the random access memory (RAM) 4 to an unused area of the optical disc 10 via the head 8. Put in. Control parameter reading mechanism 6
Reads the control parameter information written in the unused area of the optical disc 10 when the optical disc 10 is inserted into the optical disc device 9. The control parameter editing mechanism unit 5 edits the control parameter information to be written to the optical disc 10 into a predetermined format and writes it in the RAM 4, and edits the control parameter information read from the optical disc 10 into a predetermined format. Write to RAM4.

Next, the operation of the optical disk device 9 configured as described above will be described with reference to FIGS.

FIG. 2 is a development view showing the zone layout of the optical disc 10 inserted and used in the present optical disc device 9, and shows the zone layout of the 2.6 gigabyte optical disc of the ECMA standard. This optical disk is
As shown in FIG. 2, outside the user band 26 with the zone boundary unused area 23, the buffer area 24 and the test area 25, the outer manufacturer zone 22 is provided via the guard band 21, and An inner manufacturing zone 27 is provided inside the band 26 with a guard band 21 interposed therebetween. Of these, the zone boundary unused area 23, the buffer area 24 and the test area 25, as well as the outer manufacturing zone 22, the inner manufacturing zone 27 and the guard band 21 are so-called unused areas which are not used for recording normal information. is there. The optical disk device 9 utilizes these unused areas to perform power data during a read operation, power data during a write operation, the number of seek retries, the number of read retry counts, the number of off-track counts, the number of defective sectors, and the execution of certification. By recording control parameter information such as the number, and reading the information and utilizing it for the next read operation or write operation, the read operation or write operation is always performed under optimum conditions.

Of the control parameter information, the control parameter information for each user band of the optical disc includes, as shown in FIG. 3, a number of defective sectors in the band of 2 bytes (BYTE 0 to 1) 31 and 2 bytes ( BYTE 2 to 3) 32 in-band seek retries, and 2 bytes (BYTE 4
~ 5) In-band read retry count 33, 2 bytes (BYTE 6 to 7) off-track count count 34, 1 byte (BYTE 8) in-band write power 35, and 1 byte (BYTE 9) In-band read power 36 and 5 bytes (BYTE 10 to 14) in-band access number 37.

Of the control parameter information, the control parameter information for the entire optical disc is as shown in FIG.
Number of 2-byte (BYTE 0 to 1) certification executions 4
1 and 2 bytes (BYTE 2 to 3) full-surface medium retry count 42, 2 bytes (BYTE 4 to 5) full-surface read retry number 43, and 2 bytes (BYTE 6
~ 7) Off-track count number 44 on entire surface of the medium, 1-byte (BYTE 8) final access track address 45, 1-byte (BYTE 9) final access track address 46, and 1-byte (BYTE 10) final access This is the sector address 47.

These pieces of information are written and stored in the RAM 4 by the control parameter editing mechanism section 5.

The user band 2 in the optical disk device 9
When writing information to or reading information from the CPU 6, the CPU 3
When the control parameter information at that time is edited in the control parameter editing mechanism unit 5 in the format of FIGS. 3 and 4 and written in the RAM 4, and the optical disc 10 is ejected from the optical disc device 9, The control parameter writing mechanism 7 writes the data from the RAM 4 to the unused area of the optical disc 10 via the head 8.

When the optical disk 10 is inserted into the optical disk device 9, the CPU 3 issues a control parameter information reading command to the control parameter reading mechanism section 6, and the control parameter reading mechanism section 6 causes the optical disk 1 to read.
The control parameter information written in the unused area 0 of 0 is read via the head 8 and is edited in the control parameter editing mechanism section 5 in the format of FIGS. 3 and 4, and is written in the RAM 4. Let it go.

Further, when the optical disc 10 is reconstructed (a band with many defects is prohibited, a sector with many retries is targeted for defects, etc.), the retry information can be used to efficiently perform the processing. .

[0016]

As described above, the optical disc apparatus of the present invention uses the unused area of the optical disc, and when the optical disc is ejected from the optical disc device, the control parameter information is written in the unused area of the optical disc device. When it is inserted into the device, by reading the control parameter information and using it for the next read operation or write operation, there is an effect that the read operation or the write operation can always be performed under the optimum conditions, and therefore the reliability is improved. It is possible to obtain an optical disk device which is excellent in processing speed and has a high processing speed.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a development view showing a zone layout of the optical disc of the embodiment of FIG.

FIG. 3 is a format diagram showing control parameter information for each user band of the optical disc of the embodiment of FIG.

FIG. 4 is a format diagram showing control parameter information of the entire optical disc of the embodiment of FIG.

[Explanation of symbols]

 1 Host Device 2 SCSI Controller 3 Control Unit (CPU) 4 Random Access Memory (RAM) 5 Control Parameter Editing Mechanism Unit 6 Control Parameter Reading Mechanism Unit 7 Control Parameter Writing Mechanism Unit 8 Head 9 Optical Disk Device 10 Optical Disk 21 Guard Band 22 Outer Manufacture Zone 23 Unused Area of Zone Boundary 24 Buffer Area 25 Test Area 26 User Band 27 Inner Manufacture Zone 31 Number of Defective Sectors in Band 32 Number of Sequential Retry in Band 33 Number of Read Retry in Band 34 Number of Off Track Count in Band 35 Band Internal write power 36 In-band read power 37 In-band access number 41 Certify execution number 42 Medium whole surface seek retry number 43 Medium whole surface read lit B Number 44 medium entirely off track count number 45 last access track address 46 last access track address 47 last access sector address

Claims (2)

[Claims] 1. An optical disk having an unused area inside or outside the user area is used, and the optical disk is connected to a host device to exchange information with the host device.
A CSI controller; a head for writing or reading information to or from the optical disc; and a control unit for controlling an operation of writing or reading information to or from the optical disc by the head, and a control of an overall operation of the optical disc apparatus, A control parameter editing mechanism section for editing the control parameter information into a predetermined format, a random access memory for storing the control parameter information edited by the control parameter editing mechanism section, and the optical disc ejected from the optical disc device. And a control parameter writing mechanism section for writing the control parameter information stored in the random access memory to the unused area of the optical disc through the head,
And a control parameter reading mechanism section for reading out the control parameter information written in the unused area of the optical disc through the head when the optical disc is inserted into the optical disc device. Optical disk device. 2. A zone boundary which is an unused area for each of the inner and outer bands outside the user area, has an inner manufacturing zone and an outer manufacturing zone which are unused areas, and a guard band, and is unused for each user band within the user area. A SCSI controller that uses an optical disk having a use area, a buffer area, and a test area, and is connected to a host device to exchange information with the host device.
A head for writing or reading information to or from the optical disc, a control unit for controlling an operation of writing or reading information to or from the optical disc by the head, and a control of the overall operation of the optical disc apparatus, and control parameter information. To a predetermined format, a random access memory for storing the control parameter information edited by the control parameter editing mechanism, and the random access memory for ejecting the optical disc from the optical disc device. A control parameter writing mechanism section for writing the control parameter information stored in the access memory to the unused area of the optical disc via the head, and a control parameter writing mechanism section of the optical disc when the optical disc is inserted into the optical disc device. Write to the unused area Optical disk apparatus characterized by comprising said control parameter information via said head reading control parameter reading mechanism is.