JPS644979A - System for detecting abnormality in optical disk device - Google Patents
System for detecting abnormality in optical disk deviceInfo
- Publication number
- JPS644979A JPS644979A JP15776887A JP15776887A JPS644979A JP S644979 A JPS644979 A JP S644979A JP 15776887 A JP15776887 A JP 15776887A JP 15776887 A JP15776887 A JP 15776887A JP S644979 A JPS644979 A JP S644979A
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- disk device
- abnormality
- destruction
- access
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title abstract 6
- 230000005856 abnormality Effects 0.000 title abstract 4
- 230000006378 damage Effects 0.000 abstract 4
- 230000001105 regulatory effect Effects 0.000 abstract 1
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE:To prevent file destruction or volume destruction from being generated by interrupting access, by judging it to be the generation of abnormality in an optical disk device in the case where all of the write verifying operations for a regulated number of continuous sectors on an alternate track go to read errors. CONSTITUTION:When the access is discriminated as the one to the alternate track in the optical disk device 3, it is judged as the abnormality of the optical disk device that the number of times of generation of write verity errors in the write operation of the alternate track exceeds the reference number of times stored in a storage means. And when it is decided as the abnormality of the optical disk device, the access to the optical disk device 3 is interrupted. In such a way, it is possible to prevent the file destruction or the volume destruction from being generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15776887A JPS644979A (en) | 1987-06-26 | 1987-06-26 | System for detecting abnormality in optical disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15776887A JPS644979A (en) | 1987-06-26 | 1987-06-26 | System for detecting abnormality in optical disk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS644979A true JPS644979A (en) | 1989-01-10 |
Family
ID=15656885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15776887A Pending JPS644979A (en) | 1987-06-26 | 1987-06-26 | System for detecting abnormality in optical disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS644979A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946973A (en) * | 1988-09-20 | 1990-08-07 | Union Camp Corporation | Stereoselective epoxidation of cyclic 4-hydroxy olefins |
| JPH04272228A (en) * | 1991-02-28 | 1992-09-29 | Sekisui Plastics Co Ltd | Production of fibrous barium titanate |
| US6697977B2 (en) | 2000-07-21 | 2004-02-24 | Fujitsu Limited | Disc recording apparatus, method for replacing sector on recording disc, and recording disc |
-
1987
- 1987-06-26 JP JP15776887A patent/JPS644979A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946973A (en) * | 1988-09-20 | 1990-08-07 | Union Camp Corporation | Stereoselective epoxidation of cyclic 4-hydroxy olefins |
| JPH04272228A (en) * | 1991-02-28 | 1992-09-29 | Sekisui Plastics Co Ltd | Production of fibrous barium titanate |
| US6697977B2 (en) | 2000-07-21 | 2004-02-24 | Fujitsu Limited | Disc recording apparatus, method for replacing sector on recording disc, and recording disc |
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