KR950020488A - 광학적 기록재생장치 - Google Patents
광학적 기록재생장치 Download PDFInfo
- Publication number
- KR950020488A KR950020488A KR1019940035841A KR19940035841A KR950020488A KR 950020488 A KR950020488 A KR 950020488A KR 1019940035841 A KR1019940035841 A KR 1019940035841A KR 19940035841 A KR19940035841 A KR 19940035841A KR 950020488 A KR950020488 A KR 950020488A
- Authority
- KR
- South Korea
- Prior art keywords
- optical recording
- reproducing apparatus
- control
- switch
- smoothing
- 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.)
- Ceased
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 28
- 238000009499 grossing Methods 0.000 claims abstract 11
- 238000001514 detection method Methods 0.000 claims 2
- 230000001678 irradiating effect Effects 0.000 claims 2
- 230000011664 signaling Effects 0.000 claims 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
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
-
- 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
- G11B7/0941—Methods and circuits for servo gain or phase compensation during operation
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5350919A JPH07201050A (ja) | 1993-12-31 | 1993-12-31 | 光学的記録再生装置 |
| JP93-350919 | 1993-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR950020488A true KR950020488A (ko) | 1995-07-24 |
Family
ID=18413803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019940035841A Ceased KR950020488A (ko) | 1993-12-31 | 1994-12-22 | 광학적 기록재생장치 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5572495A (enExample) |
| EP (1) | EP0661697B1 (enExample) |
| JP (1) | JPH07201050A (enExample) |
| KR (1) | KR950020488A (enExample) |
| CN (1) | CN1121239A (enExample) |
| AU (1) | AU663660B2 (enExample) |
| CA (1) | CA2137644A1 (enExample) |
| DE (1) | DE69423327T2 (enExample) |
| TW (1) | TW270199B (enExample) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997024716A1 (en) * | 1995-12-27 | 1997-07-10 | Philips Electronics N.V. | Device for scanning an optically readable record carrier |
| EP0911712A1 (en) * | 1997-10-21 | 1999-04-28 | Deutsche Thomson-Brandt Gmbh | Corrected servo control signal in a servo control loop |
| JP2003323718A (ja) * | 2002-04-30 | 2003-11-14 | Toshiba Corp | 光ディスク記録再生装置及びライトパワー調整方法 |
| TW200512746A (en) * | 2003-09-18 | 2005-04-01 | Mediatek Inc | Control circuit for automatic gain control device of optical disc player |
| JP4446290B2 (ja) * | 2006-03-02 | 2010-04-07 | 日立工機株式会社 | 電動工具及び卓上切断機 |
| US7592826B1 (en) * | 2006-05-31 | 2009-09-22 | Lockheed Martin Corporation | Method and apparatus for detecting EM energy using surface plasmon polaritons |
| US8188536B2 (en) | 2006-06-26 | 2012-05-29 | Macronix International Co., Ltd. | Memory device and manufacturing method and operating method thereof |
| JP2008192191A (ja) * | 2007-01-31 | 2008-08-21 | Toshiba Corp | 信号処理方法及び光ディスク装置 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3480619D1 (de) * | 1983-11-09 | 1990-01-04 | Sharp Kk | Servosystem zum positionieren eines optischen strahls. |
| US4755977A (en) * | 1984-07-05 | 1988-07-05 | Storage Technology Partners Ii | Runout compensation for a coarse tracking servo system in an optical disk storage unit |
| JP2565485B2 (ja) * | 1984-09-14 | 1996-12-18 | オリンパス光学工業株式会社 | 光学的記録再生装置 |
| KR900004182B1 (ko) * | 1986-03-31 | 1990-06-18 | 삼성전자 주식회사 | 3비임 방식 광픽업 회절격자 조정장치 |
| JP2585036B2 (ja) * | 1987-12-25 | 1997-02-26 | 京セラ株式会社 | 光学式情報記録再生装置のトラッキングデフェクト解消方法 |
| JP2701406B2 (ja) * | 1989-01-09 | 1998-01-21 | ソニー株式会社 | 光ディスク装置のサーボオートゲインコントロール回路 |
| DE3926272A1 (de) * | 1989-08-09 | 1991-02-14 | Thomson Brandt Gmbh | Schaltungsanordnung zur automatischen verstaerkungsregelung |
| JPH0547895A (ja) * | 1991-08-14 | 1993-02-26 | Matsushita Electron Corp | 半導体ウエハ移載装置 |
-
1993
- 1993-12-31 JP JP5350919A patent/JPH07201050A/ja active Pending
-
1994
- 1994-11-30 TW TW083111113A patent/TW270199B/zh active
- 1994-12-07 AU AU80291/94A patent/AU663660B2/en not_active Ceased
- 1994-12-07 US US08/350,827 patent/US5572495A/en not_active Expired - Fee Related
- 1994-12-08 CA CA002137644A patent/CA2137644A1/en not_active Abandoned
- 1994-12-09 DE DE69423327T patent/DE69423327T2/de not_active Expired - Fee Related
- 1994-12-09 EP EP94119454A patent/EP0661697B1/en not_active Expired - Lifetime
- 1994-12-22 KR KR1019940035841A patent/KR950020488A/ko not_active Ceased
- 1994-12-28 CN CN94113496A patent/CN1121239A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU8029194A (en) | 1995-08-03 |
| CN1121239A (zh) | 1996-04-24 |
| EP0661697B1 (en) | 2000-03-08 |
| AU663660B2 (en) | 1995-10-12 |
| JPH07201050A (ja) | 1995-08-04 |
| TW270199B (enExample) | 1996-02-11 |
| US5572495A (en) | 1996-11-05 |
| DE69423327T2 (de) | 2000-10-19 |
| DE69423327D1 (de) | 2000-04-13 |
| EP0661697A1 (en) | 1995-07-05 |
| CA2137644A1 (en) | 1995-07-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19941222 |
|
| PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19941222 Comment text: Request for Examination of Application |
|
| 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: 19980331 Patent event code: PE09021S01D |
|
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 19980714 Patent event code: PE09021S01D |
|
| E601 | Decision to refuse application | ||
| PE0601 | Decision on rejection of patent |
Patent event date: 19981230 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 19980714 Comment text: Notification of reason for refusal Patent event code: PE06011S01I Patent event date: 19980331 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |