KR880700396A - 광디스크 기록 재생 장치 - Google Patents
광디스크 기록 재생 장치Info
- Publication number
- KR880700396A KR880700396A KR1019860700599A KR860700599A KR880700396A KR 880700396 A KR880700396 A KR 880700396A KR 1019860700599 A KR1019860700599 A KR 1019860700599A KR 860700599 A KR860700599 A KR 860700599A KR 880700396 A KR880700396 A KR 880700396A
- Authority
- KR
- South Korea
- Prior art keywords
- optical disc
- playback device
- disc recording
- recording
- playback
- Prior art date
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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10595—Control of operating function
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10504—Recording
- G11B11/10506—Recording by modulating only the light beam of the transducer
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/1055—Disposition or mounting of transducers relative to record carriers
- G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
-
- 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
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60014991A JPS61175938A (ja) | 1985-01-29 | 1985-01-29 | 光デイスク記録再生装置 |
| JP60-14991 | 1985-01-29 | ||
| PCT/JP1985/000668 WO1986004446A1 (en) | 1985-01-29 | 1985-12-05 | Recording/reproducing apparatus using optical disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880700396A true KR880700396A (ko) | 1988-03-15 |
| KR940005102B1 KR940005102B1 (ko) | 1994-06-10 |
Family
ID=11876406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019860700599A KR940005102B1 (ko) | 1985-01-29 | 1985-12-05 | 광디스크 기록 재생 장치 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4774698A (ko) |
| EP (1) | EP0210275B1 (ko) |
| JP (1) | JPS61175938A (ko) |
| KR (1) | KR940005102B1 (ko) |
| DE (1) | DE3583440D1 (ko) |
| WO (1) | WO1986004446A1 (ko) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62165736A (ja) * | 1986-01-16 | 1987-07-22 | Matsushita Electric Ind Co Ltd | 光デイスク再生装置 |
| JP2585281B2 (ja) * | 1987-08-19 | 1997-02-26 | 株式会社日立製作所 | 光ディスク装置 |
| US5077719A (en) * | 1987-08-28 | 1991-12-31 | Fujitsu Limited | Optical disk access system |
| DE3732903A1 (de) * | 1987-09-30 | 1989-04-13 | Thomson Brandt Gmbh | Optische abtastvorrichtung |
| DE68906290T2 (de) * | 1988-02-22 | 1993-09-23 | Victor Company Of Japan | Detektorsystem mit einem optischen rotierenden kodierer zur feststellung der verschiebung einer beweglichen vorrichtung. |
| EP0392777B1 (en) * | 1989-04-10 | 1996-02-07 | Fujitsu Limited | Track access control system in rotating disc devices with eccentricity correction |
| JPH03171453A (ja) * | 1989-11-29 | 1991-07-24 | Sony Corp | 光磁気信号再生方法 |
| GB2248989B (en) * | 1990-10-15 | 1995-05-24 | Applied Magnetics Corp | Focus sensing apparatus and method |
| US5278811A (en) * | 1992-07-07 | 1994-01-11 | Industrial Technology Research Institute | Magneto-optic recording and playback system |
| JPH0973649A (ja) * | 1995-09-04 | 1997-03-18 | Nikon Corp | 光ディスク装置 |
| US7522480B2 (en) | 2001-01-25 | 2009-04-21 | Dphi Acquisitions, Inc. | Digital tracking servo system with multi-track seek with an acceleration clamp |
| US7020054B2 (en) * | 2001-01-25 | 2006-03-28 | Dphi Acquisitions, Inc. | Digital servo system with biased feed-forward |
| JP2010277658A (ja) * | 2009-05-29 | 2010-12-09 | Hitachi-Lg Data Storage Inc | 光ディスク装置及びプログラム |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4408314A (en) * | 1980-02-29 | 1983-10-04 | Tokyo Shibaura Denki Kabushiki Kaisha | Record/playback track tracking servo |
| CA1190321A (en) * | 1981-10-29 | 1985-07-09 | Toshihisa Deguchi | Magneto-optical head assembly |
| JPS58159248A (ja) * | 1982-03-17 | 1983-09-21 | Fujitsu Ltd | 光デイスク装置のトラツキングサ−ボ方式 |
| JPS59157877A (ja) * | 1983-02-28 | 1984-09-07 | Mitsubishi Electric Corp | 情報記録及び／又は再生装置のサ−ボ方式 |
| US4661942A (en) * | 1983-08-26 | 1987-04-28 | Mitsubishi Denki Kabushiki Kaisha | Control apparatus for information storage and retrieval system |
| US4607157A (en) * | 1984-02-09 | 1986-08-19 | Xerox Corporation | Automatic focus offset correction system |
-
1985
- 1985-01-29 JP JP60014991A patent/JPS61175938A/ja active Pending
- 1985-12-05 EP EP86900237A patent/EP0210275B1/en not_active Expired - Lifetime
- 1985-12-05 US US06/919,145 patent/US4774698A/en not_active Expired - Lifetime
- 1985-12-05 DE DE8686900237T patent/DE3583440D1/de not_active Expired - Lifetime
- 1985-12-05 KR KR1019860700599A patent/KR940005102B1/ko not_active IP Right Cessation
- 1985-12-05 WO PCT/JP1985/000668 patent/WO1986004446A1/ja active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| DE3583440D1 (de) | 1991-08-14 |
| EP0210275A4 (en) | 1988-01-20 |
| WO1986004446A1 (en) | 1986-07-31 |
| EP0210275B1 (en) | 1991-07-10 |
| EP0210275A1 (en) | 1987-02-04 |
| JPS61175938A (ja) | 1986-08-07 |
| US4774698A (en) | 1988-09-27 |
| KR940005102B1 (ko) | 1994-06-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| G160 | Decision to publish patent application | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20040521 Year of fee payment: 11 |
|
| LAPS | Lapse due to unpaid annual fee |