JPS6457427A - Focus servo control system for optical disk device - Google Patents
Focus servo control system for optical disk deviceInfo
- Publication number
- JPS6457427A JPS6457427A JP62214555A JP21455587A JPS6457427A JP S6457427 A JPS6457427 A JP S6457427A JP 62214555 A JP62214555 A JP 62214555A JP 21455587 A JP21455587 A JP 21455587A JP S6457427 A JPS6457427 A JP S6457427A
- Authority
- JP
- Japan
- Prior art keywords
- focus
- time
- servo control
- writing
- reading
- 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.)
- Granted
Links
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62214555A JPH0738257B2 (ja) | 1987-08-28 | 1987-08-28 | 光ディスク装置 |
US07/235,496 US5077719A (en) | 1987-08-28 | 1988-08-24 | Optical disk access system |
DE3887795T DE3887795T2 (de) | 1987-08-28 | 1988-08-26 | Zugriffssystem für optische Platten. |
EP88113952A EP0304932B1 (en) | 1987-08-28 | 1988-08-26 | Optical disk access system |
KR1019880010959A KR910008499B1 (ko) | 1987-08-28 | 1988-08-27 | 광 디스크 액세스 시스템 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62214555A JPH0738257B2 (ja) | 1987-08-28 | 1987-08-28 | 光ディスク装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6457427A true JPS6457427A (en) | 1989-03-03 |
JPH0738257B2 JPH0738257B2 (ja) | 1995-04-26 |
Family
ID=16657663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62214555A Expired - Lifetime JPH0738257B2 (ja) | 1987-08-28 | 1987-08-28 | 光ディスク装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0738257B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101226755A (zh) * | 2007-01-16 | 2008-07-23 | 三洋电机株式会社 | 盘装置 |
US8091384B2 (en) | 2008-10-31 | 2012-01-10 | Japan Super Quartz Corporation | Method of manufacturing silica glass crucible for pulling silicon single crystals |
US8363527B2 (en) | 2007-01-16 | 2013-01-29 | Sanyo Electric Co., Ltd. | Disc apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59171035A (ja) * | 1983-03-18 | 1984-09-27 | Fujitsu Ltd | 光デイスク装置におけるトラツクアクセス方式 |
JPS59201232A (ja) * | 1983-04-27 | 1984-11-14 | Toshiba Corp | 光学式デイスクレコ−ド再生装置のフオ−カス制御回路 |
-
1987
- 1987-08-28 JP JP62214555A patent/JPH0738257B2/ja not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59171035A (ja) * | 1983-03-18 | 1984-09-27 | Fujitsu Ltd | 光デイスク装置におけるトラツクアクセス方式 |
JPS59201232A (ja) * | 1983-04-27 | 1984-11-14 | Toshiba Corp | 光学式デイスクレコ−ド再生装置のフオ−カス制御回路 |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101226755A (zh) * | 2007-01-16 | 2008-07-23 | 三洋电机株式会社 | 盘装置 |
JP2009099238A (ja) * | 2007-01-16 | 2009-05-07 | Sanyo Electric Co Ltd | ディスク装置およびその調整方法 |
US8363527B2 (en) | 2007-01-16 | 2013-01-29 | Sanyo Electric Co., Ltd. | Disc apparatus |
US8091384B2 (en) | 2008-10-31 | 2012-01-10 | Japan Super Quartz Corporation | Method of manufacturing silica glass crucible for pulling silicon single crystals |
Also Published As
Publication number | Publication date |
---|---|
JPH0738257B2 (ja) | 1995-04-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080426 Year of fee payment: 13 |