CN1109335C - 光盘播放器中趋近聚焦区域的装置及其方法 - Google Patents
光盘播放器中趋近聚焦区域的装置及其方法 Download PDFInfo
- Publication number
- CN1109335C CN1109335C CN96109418A CN96109418A CN1109335C CN 1109335 C CN1109335 C CN 1109335C CN 96109418 A CN96109418 A CN 96109418A CN 96109418 A CN96109418 A CN 96109418A CN 1109335 C CN1109335 C CN 1109335C
- Authority
- CN
- China
- Prior art keywords
- focal region
- convergence
- time counter
- output
- search
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0945—Methods for initialising servos, start-up sequences
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
- G11B7/08511—Methods for track change, selection or preliminary positioning by moving the head with focus pull-in only
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims (6)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR24850/1995 | 1995-08-11 | ||
KR1019950024850A KR0160715B1 (ko) | 1995-08-11 | 1995-08-11 | 광디스크 플레이어의 포커스인입 장치와 방법 |
KR24850/95 | 1995-08-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1148712A CN1148712A (zh) | 1997-04-30 |
CN1109335C true CN1109335C (zh) | 2003-05-21 |
Family
ID=19423354
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN96109418A Expired - Lifetime CN1109335C (zh) | 1995-08-11 | 1996-08-09 | 光盘播放器中趋近聚焦区域的装置及其方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US5745452A (zh) |
KR (1) | KR0160715B1 (zh) |
CN (1) | CN1109335C (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1017044A1 (en) * | 1998-12-29 | 2000-07-05 | STMicroelectronics S.r.l. | Control device for a focus system of a CD driver using the Fuzzy logic |
JP3780732B2 (ja) * | 1999-03-10 | 2006-05-31 | 株式会社日立製作所 | 分散制御システム |
JP3736398B2 (ja) * | 2001-08-01 | 2006-01-18 | ティアック株式会社 | 光ディスク装置 |
KR100529309B1 (ko) * | 2002-10-07 | 2005-11-17 | 삼성전자주식회사 | Dvd 플레이어의 오프셋 조정 장치 및 방법 |
TWI274235B (en) * | 2005-12-23 | 2007-02-21 | Ind Tech Res Inst | Method and apparatus for estimating the position of a moving part of a linear actuator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1060159A (zh) * | 1990-09-28 | 1992-04-08 | 国际商业机器公司 | 利用聚焦信号偏移获得最佳聚焦 |
CN1060172A (zh) * | 1990-09-28 | 1992-04-08 | 国际商业机器公司 | 定位伺服系统的抗滑动控制 |
US5282184A (en) * | 1991-03-29 | 1994-01-25 | Konica Corporation | Focus control device of an optical disk apparatus |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5642340A (en) * | 1993-06-23 | 1997-06-24 | Sharp Kabushiki Kaisha | Device for controlling focus of an optical disk apparatus |
US5629912A (en) * | 1995-01-30 | 1997-05-13 | Sony Corporation | Focusing servo controlling apparatus |
-
1995
- 1995-08-11 KR KR1019950024850A patent/KR0160715B1/ko not_active IP Right Cessation
-
1996
- 1996-08-05 US US08/692,130 patent/US5745452A/en not_active Expired - Lifetime
- 1996-08-09 CN CN96109418A patent/CN1109335C/zh not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1060159A (zh) * | 1990-09-28 | 1992-04-08 | 国际商业机器公司 | 利用聚焦信号偏移获得最佳聚焦 |
CN1060172A (zh) * | 1990-09-28 | 1992-04-08 | 国际商业机器公司 | 定位伺服系统的抗滑动控制 |
US5282184A (en) * | 1991-03-29 | 1994-01-25 | Konica Corporation | Focus control device of an optical disk apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR970012346A (ko) | 1997-03-29 |
CN1148712A (zh) | 1997-04-30 |
KR0160715B1 (ko) | 1999-01-15 |
US5745452A (en) | 1998-04-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: TOSHIBA SAMSUNG STORAGE TECHNO Free format text: FORMER OWNER: SAMSUNG ELECTRONICS CO., LTD. Effective date: 20140730 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20140730 Address after: Gyeonggi Do, South Korea Patentee after: Toshiba Samsung Storage Technology Korea Co., Address before: Gyeonggi Do, South Korea Patentee before: Samsung Electronics Co., Ltd. |
|
CX01 | Expiry of patent term |
Granted publication date: 20030521 |
|
EXPY | Termination of patent right or utility model |