KR20000031499A - 폐루프 방식의 트랙점프 장치 - Google Patents
폐루프 방식의 트랙점프 장치 Download PDFInfo
- Publication number
- KR20000031499A KR20000031499A KR1019980047567A KR19980047567A KR20000031499A KR 20000031499 A KR20000031499 A KR 20000031499A KR 1019980047567 A KR1019980047567 A KR 1019980047567A KR 19980047567 A KR19980047567 A KR 19980047567A KR 20000031499 A KR20000031499 A KR 20000031499A
- Authority
- KR
- South Korea
- Prior art keywords
- tracking
- track jump
- signal
- light beam
- tracking error
- 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 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000001678 irradiating effect Effects 0.000 claims abstract description 4
- 230000009191 jumping Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003252 repetitive effect Effects 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
- G11B7/0925—Electromechanical actuators for lens positioning
- G11B7/0929—Electromechanical actuators for lens positioning for tracking only
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10305—Improvement or modification of read or write signals signal quality assessment
- G11B20/10388—Improvement or modification of read or write signals signal quality assessment control of the read or write heads, e.g. tracking errors, defocus or tilt compensation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B2020/10916—Seeking data on the record carrier for preparing an access to a specific address
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
Abstract
Description
Claims (3)
- 외부로부터 입력되는 트랙점프 명령에 의해 트랙점프를 수행하는 트랙점프 장치에 있어서,기록매체에 광빔의 조사하고 반사되는 광량을 전기적신호로 변환하기 위한 픽업수단과,상기 픽업수단의 출력신호에서 트랙킹에러신호를 검출하기 위한 트랙킹에러 검출수단과,상기 트랙킹에러신호로부터 상기 광빔의 위치를 검출하기 위한 위치검출수단과,상기 광빔의 위치에 기초하여 트랙킹 제어신호를 발생하는 제어수단과,상기 트랙킹 제어신호에 대응하여 상기 광픽업에 장착된 트랙킹 액츄에이터의 구동전압을 발생하는 트랙킹 액츄에이터 구동수단을 구비하는 것을 특징으로 하는 폐루프 방식의 트랙 점프 장치.
- 제 1 항에 있어서,상기 위치검출수단으로 부터 출력되는 광빔의 위치 검출신호와 상기 트랙점프명령신호 간의 차신호를 발생하여 상기 제어수단으로 공급하는 감산수단을 더 구비하는 것을 특징으로 하는 페루프 방식의 트랙 점프 장치.
- 제 1 항에 있어서,상기 위치검출수단은상기 트랙킹에러신호를 적분하여 상기 광빔의 위치 검출신호를 검출하는 것을 특징으로 하는 폐루프 방식의 트랙 점프 장치.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980047567A KR20000031499A (ko) | 1998-11-06 | 1998-11-06 | 폐루프 방식의 트랙점프 장치 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980047567A KR20000031499A (ko) | 1998-11-06 | 1998-11-06 | 폐루프 방식의 트랙점프 장치 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20000031499A true KR20000031499A (ko) | 2000-06-05 |
Family
ID=19557418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980047567A Ceased KR20000031499A (ko) | 1998-11-06 | 1998-11-06 | 폐루프 방식의 트랙점프 장치 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20000031499A (ko) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03156776A (ja) * | 1989-11-15 | 1991-07-04 | Sony Corp | トラックジャンプ制御回路 |
| JPH04176023A (ja) * | 1990-11-07 | 1992-06-23 | Olympus Optical Co Ltd | 光学式情報記録再生装置 |
| JPH05120818A (ja) * | 1991-10-25 | 1993-05-18 | Matsushita Electric Ind Co Ltd | ジヤンピング走査装置 |
| JPH09167357A (ja) * | 1995-12-14 | 1997-06-24 | Hitachi Ltd | 光学式記録再生装置におけるトラックジャンプ制御装置 |
-
1998
- 1998-11-06 KR KR1019980047567A patent/KR20000031499A/ko not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03156776A (ja) * | 1989-11-15 | 1991-07-04 | Sony Corp | トラックジャンプ制御回路 |
| JPH04176023A (ja) * | 1990-11-07 | 1992-06-23 | Olympus Optical Co Ltd | 光学式情報記録再生装置 |
| JPH05120818A (ja) * | 1991-10-25 | 1993-05-18 | Matsushita Electric Ind Co Ltd | ジヤンピング走査装置 |
| JPH09167357A (ja) * | 1995-12-14 | 1997-06-24 | Hitachi Ltd | 光学式記録再生装置におけるトラックジャンプ制御装置 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19981106 |
|
| PG1501 | Laying open of application | ||
| N231 | Notification of change of applicant | ||
| PN2301 | Change of applicant |
Patent event date: 20020603 Comment text: Notification of Change of Applicant Patent event code: PN23011R01D |
|
| A201 | Request for examination | ||
| PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 20031105 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 19981106 Comment text: Patent Application |
|
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20050526 Patent event code: PE09021S01D |
|
| E601 | Decision to refuse application | ||
| PE0601 | Decision on rejection of patent |
Patent event date: 20051010 Comment text: Decision to Refuse Application Patent event code: PE06012S01D Patent event date: 20050526 Comment text: Notification of reason for refusal Patent event code: PE06011S01I |