KR19980050480A - 포커스 바이어스 자동 조정 방법 - Google Patents
포커스 바이어스 자동 조정 방법 Download PDFInfo
- Publication number
- KR19980050480A KR19980050480A KR1019960069304A KR19960069304A KR19980050480A KR 19980050480 A KR19980050480 A KR 19980050480A KR 1019960069304 A KR1019960069304 A KR 1019960069304A KR 19960069304 A KR19960069304 A KR 19960069304A KR 19980050480 A KR19980050480 A KR 19980050480A
- Authority
- KR
- South Korea
- Prior art keywords
- bias
- value
- jitter
- averaging
- jitter values
- 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
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
- 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
- G11B7/094—Methods and circuits for servo offset compensation
-
- 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
- G11B7/0908—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 for focusing only
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
Description
Claims (2)
- 포커스 바이어스를 조정하는 방법에 있어서,소정의 바이어스로 부터 제1방향 및 제1방향의 반대 방향으로 증가시켜가면서 기준되는 지터값 이상인 각 방향에서의 두 지터값을 평균한 지터값을 구하는 제1과정;상기 제1과정을 소정 횟수 반복하여 복수개의 지터값들을 구하는 제2과정;상기 제2과정의 복수개 지터값중에서 최대, 최소값의 지터값을 제외한 나머지를 평균하여 그 값을 바이어스값으로 설정하는 제3과정을 포함하는 것을 특징으로 하는 포커스 바이어스 자동 조정 방법.
- 제1항에 있어서, 상기 제1과정은 제로(0) 바이어스로 부터 시작하여 각 방향으로 증가시켜가는 것을 특징으로 하는 포커스 바이어스 자동 조정 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960069304A KR100230267B1 (ko) | 1996-12-20 | 1996-12-20 | 포커스 바이어스 자동 조정 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960069304A KR100230267B1 (ko) | 1996-12-20 | 1996-12-20 | 포커스 바이어스 자동 조정 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR19980050480A true KR19980050480A (ko) | 1998-09-15 |
KR100230267B1 KR100230267B1 (ko) | 1999-11-15 |
Family
ID=19489882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960069304A Expired - Fee Related KR100230267B1 (ko) | 1996-12-20 | 1996-12-20 | 포커스 바이어스 자동 조정 방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100230267B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100725955B1 (ko) * | 2005-10-26 | 2007-06-11 | 삼성전자주식회사 | 하드디스크 드라이브 및 그 하드디스크 드라이브의탐색방법 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11899589B2 (en) | 2021-06-22 | 2024-02-13 | Samsung Electronics Co., Ltd. | Systems, methods, and devices for bias mode management in memory systems |
-
1996
- 1996-12-20 KR KR1019960069304A patent/KR100230267B1/ko not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100725955B1 (ko) * | 2005-10-26 | 2007-06-11 | 삼성전자주식회사 | 하드디스크 드라이브 및 그 하드디스크 드라이브의탐색방법 |
Also Published As
Publication number | Publication date |
---|---|
KR100230267B1 (ko) | 1999-11-15 |
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Legal Events
Date | Code | Title | Description |
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A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19961220 |
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PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19961220 Comment text: Request for Examination of Application |
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PG1501 | Laying open of application | ||
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 19990226 Patent event code: PE09021S01D |
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E701 | Decision to grant or registration of patent right | ||
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Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19990720 |
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Comment text: Registration of Establishment Patent event date: 19990823 Patent event code: PR07011E01D |
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