JPS55108938A - Recording control system - Google Patents
Recording control systemInfo
- Publication number
- JPS55108938A JPS55108938A JP1336379A JP1336379A JPS55108938A JP S55108938 A JPS55108938 A JP S55108938A JP 1336379 A JP1336379 A JP 1336379A JP 1336379 A JP1336379 A JP 1336379A JP S55108938 A JPS55108938 A JP S55108938A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- recorded
- defective part
- data
- recording
- 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
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE: To prevent burst errors from being generated, by stopping recording of data when the recording light beam reaches the surface defect of an optical disc and by recording duplicatively data, which is recorded just before the defective part, after a continuous pattern and a synchronizing pattern.
CONSTITUTION: Block 100 consits of level detector 11, which checks the amplitude of signal 36 and generates high-level error signal 38 to supply this error signal 38 to controller 13 when the amplitude above is lowered abnormally, and pulse width detector 12 which checks the pulse interval of pulse signal 7 and gives error signal 39 when the interval above becomes wide abnormally. When light beam 22 reaches defective part 50, disturbance of amplitude and period is generated in signal 36, and control 13 senses the defective part. After recording state signal 33 is changed to a continuous pattern signal and a synchronizing pattern is recorded, data recorded just before the defective part is recorded duplicatively. Consequently, data errors can be corrected easily.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1336379A JPS55108938A (en) | 1979-02-09 | 1979-02-09 | Recording control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1336379A JPS55108938A (en) | 1979-02-09 | 1979-02-09 | Recording control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55108938A true JPS55108938A (en) | 1980-08-21 |
Family
ID=11831006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1336379A Pending JPS55108938A (en) | 1979-02-09 | 1979-02-09 | Recording control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55108938A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0089020A2 (en) * | 1982-03-15 | 1983-09-21 | Kabushiki Kaisha Toshiba | Data processing apparatus with means for recording data by moving a head to a plurality of tracks |
| JPS61170961A (en) * | 1985-01-23 | 1986-08-01 | Matsushita Electric Ind Co Ltd | Optical information recording and reproducing device |
| EP0260637A2 (en) * | 1986-09-16 | 1988-03-23 | Matsushita Electric Industrial Co., Ltd. | Optical information recording/reproducing apparatus |
| JPH076385A (en) * | 1993-12-10 | 1995-01-10 | Hitachi Ltd | Optical information processing method and device therefor |
-
1979
- 1979-02-09 JP JP1336379A patent/JPS55108938A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0089020A2 (en) * | 1982-03-15 | 1983-09-21 | Kabushiki Kaisha Toshiba | Data processing apparatus with means for recording data by moving a head to a plurality of tracks |
| JPS61170961A (en) * | 1985-01-23 | 1986-08-01 | Matsushita Electric Ind Co Ltd | Optical information recording and reproducing device |
| EP0260637A2 (en) * | 1986-09-16 | 1988-03-23 | Matsushita Electric Industrial Co., Ltd. | Optical information recording/reproducing apparatus |
| JPH076385A (en) * | 1993-12-10 | 1995-01-10 | Hitachi Ltd | Optical information processing method and device therefor |
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