HK44896A - Device for scanning a record carrier and control circuit for use in such a device - Google Patents
Device for scanning a record carrier and control circuit for use in such a deviceInfo
- Publication number
- HK44896A HK44896A HK44896A HK44896A HK44896A HK 44896 A HK44896 A HK 44896A HK 44896 A HK44896 A HK 44896A HK 44896 A HK44896 A HK 44896A HK 44896 A HK44896 A HK 44896A
- Authority
- HK
- Hong Kong
- Prior art keywords
- error signal
- deviation
- velocity
- range
- control circuit
- 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
- G11B7/085—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
- G11B7/08541—Methods for track change, selection or preliminary positioning by moving the head involving track counting to determine position
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. 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
- G11B7/085—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
- G11B7/08517—Methods for track change, selection or preliminary positioning by moving the head with tracking pull-in only
-
- 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
- G11B7/08529—Methods and circuits to control the velocity of the head as it traverses the tracks
-
- 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
- G11B7/0946—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 specially adapted for operation during external perturbations not related to the carrier or servo beam, e.g. vibration
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Facsimile Scanning Arrangements (AREA)
- Recording Measured Values (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Developing Agents For Electrophotography (AREA)
- Fuel-Injection Apparatus (AREA)
- Control Of Position Or Direction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8802435A NL8802435A (nl) | 1988-10-05 | 1988-10-05 | Inrichting voor het aftasten van een registratiedrager, alsmede een regelschakeling voor toepassing in een dergelijke inrichting. |
Publications (1)
Publication Number | Publication Date |
---|---|
HK44896A true HK44896A (en) | 1996-03-22 |
Family
ID=19852995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK44896A HK44896A (en) | 1988-10-05 | 1996-03-14 | Device for scanning a record carrier and control circuit for use in such a device |
Country Status (9)
Country | Link |
---|---|
US (1) | US5036506A (de) |
EP (1) | EP0362938B1 (de) |
JP (1) | JP2759686B2 (de) |
KR (1) | KR0173448B1 (de) |
CN (1) | CN1017571B (de) |
AT (1) | ATE107072T1 (de) |
DE (1) | DE68915922T2 (de) |
HK (1) | HK44896A (de) |
NL (1) | NL8802435A (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5270988A (en) * | 1988-08-08 | 1993-12-14 | Olympus Optical Co., Ltd. | Optical recording and reproducing apparatus making access by multitrack jump |
JP2804118B2 (ja) * | 1989-10-03 | 1998-09-24 | 株式会社東芝 | トラッキング制御装置 |
JP2808747B2 (ja) * | 1989-11-15 | 1998-10-08 | ソニー株式会社 | トラックジャンプ制御回路 |
JPH04123372A (ja) * | 1990-09-13 | 1992-04-23 | Sony Corp | シーク制御回路 |
EP0507907B1 (de) * | 1990-09-18 | 1999-01-13 | Rodime PLC | Digitale servosteuerung für ein plattenlaufwerk |
JPH04137275A (ja) * | 1990-09-28 | 1992-05-12 | Toshiba Corp | ピックアップの速度検出装置 |
US5426545A (en) * | 1991-05-09 | 1995-06-20 | Sidman; Michael D. | Active disturbance compensation system for disk drives |
EP0599392B1 (de) * | 1992-11-20 | 1999-02-03 | Koninklijke Philips Electronics N.V. | Abtastvorrichtung mit einer Zweistufensteuerung zum Positionieren eines Abtastpunktes |
DE69323397T2 (de) * | 1992-11-20 | 1999-08-26 | Koninklijke Philips Electronics N.V. | Abtastvorrichtung mit einer Zweistufensteuerung zum Positionieren eines Abtastpunktes |
US5978329A (en) | 1995-06-07 | 1999-11-02 | Discovision Associates | Technique for closed loop servo operation in optical disc tracking control |
CN1077715C (zh) | 1995-12-06 | 2002-01-09 | 迪维安公司 | 聚焦控制的装置和方法 |
US5689485A (en) | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
KR100223633B1 (ko) * | 1996-12-31 | 1999-10-15 | 윤종용 | 하드 디스크 드라이브에서 헤드속도 측정을 이용한 안정 기록방법 |
US6222336B1 (en) | 1998-06-05 | 2001-04-24 | Seagate Technology Llc | Rotational vibration detection using spindle motor velocity sense coils |
US6088185A (en) * | 1998-06-05 | 2000-07-11 | Seagate Technology, Inc. | Rotational vibration detection using a velocity sense coil |
US6304406B1 (en) | 1998-06-05 | 2001-10-16 | Seagate Technology Llc | Rotational vibration compensation using a fixed head and a constant frequency pattern |
US6285522B1 (en) | 1998-06-05 | 2001-09-04 | Seagate Technology Llc | Rotational vibration compensation using a dedicated surface with a constant frequency pattern |
KR100356517B1 (ko) * | 2000-08-22 | 2002-10-18 | 엘지산전 주식회사 | 엘리베이터의 속도패턴 발생 방법 |
CN1823311A (zh) * | 2003-07-17 | 2006-08-23 | 皇家飞利浦电子股份有限公司 | 伺服系统 |
JP2021149987A (ja) * | 2020-03-18 | 2021-09-27 | 株式会社東芝 | 磁気ディスク装置及びサーボライト方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL8001974A (nl) * | 1980-04-03 | 1981-11-02 | Philips Nv | Spoorvolginrichting. |
JPS57176568A (en) * | 1981-04-22 | 1982-10-29 | Pioneer Electronic Corp | Relative movement controller between pickup and recording track for information reader |
JPS6010429A (ja) * | 1983-06-30 | 1985-01-19 | Toshiba Corp | 光デイスク装置 |
JPS61977A (ja) * | 1984-06-13 | 1986-01-06 | Pioneer Electronic Corp | トラツキングサ−ボ装置 |
JPH0749524Y2 (ja) * | 1984-12-17 | 1995-11-13 | ナカミチ株式会社 | 移動体の移動制御装置 |
US4740939A (en) * | 1985-05-22 | 1988-04-26 | Hitachi Ltd. | Apparatus for reproducing information recorded on a disk |
NL8602911A (nl) * | 1986-11-17 | 1988-06-16 | Philips Nv | Inrichting voor het inschrijven en/of uitlezen van informatie in respektievelijk uit een schijfvormige registratiedrager. |
JP2696822B2 (ja) * | 1987-01-22 | 1998-01-14 | ソニー株式会社 | トラツキングサーボ装置 |
-
1988
- 1988-10-05 NL NL8802435A patent/NL8802435A/nl not_active Application Discontinuation
-
1989
- 1989-02-27 US US07/316,396 patent/US5036506A/en not_active Expired - Lifetime
- 1989-09-29 EP EP89202446A patent/EP0362938B1/de not_active Expired - Lifetime
- 1989-09-29 JP JP1255095A patent/JP2759686B2/ja not_active Expired - Fee Related
- 1989-09-29 AT AT89202446T patent/ATE107072T1/de not_active IP Right Cessation
- 1989-09-29 DE DE68915922T patent/DE68915922T2/de not_active Expired - Fee Related
- 1989-09-30 CN CN89107671A patent/CN1017571B/zh not_active Expired
- 1989-10-04 KR KR1019890014195A patent/KR0173448B1/ko not_active IP Right Cessation
-
1996
- 1996-03-14 HK HK44896A patent/HK44896A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR0173448B1 (ko) | 1999-04-15 |
ATE107072T1 (de) | 1994-06-15 |
EP0362938B1 (de) | 1994-06-08 |
CN1041662A (zh) | 1990-04-25 |
JP2759686B2 (ja) | 1998-05-28 |
NL8802435A (nl) | 1990-05-01 |
EP0362938A1 (de) | 1990-04-11 |
JPH02148475A (ja) | 1990-06-07 |
DE68915922T2 (de) | 1994-12-15 |
CN1017571B (zh) | 1992-07-22 |
KR900006930A (ko) | 1990-05-09 |
US5036506A (en) | 1991-07-30 |
DE68915922D1 (de) | 1994-07-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
HK44896A (en) | Device for scanning a record carrier and control circuit for use in such a device | |
NO301495B1 (no) | Fremgangsmåte for oppmåling av jernbanespor, samt måleapparat til bruk ved fremgangsmåten | |
GB1516239A (en) | Positioning system and method particularly useful for magnetic disc drives | |
DE3852553D1 (de) | Vorrichtung zum Umschlagen von Sattelschleppern. | |
ES2129414T3 (es) | Sistema de control digital para unidades de disco. | |
GB1356986A (en) | Apparatus for the displacement of an object between two points of a predetermined path | |
AU646222B2 (en) | Method and apparatus for recording signals on a record carrier, measurement method and measurement device for use in the recording method and the recording apparatus, and record carrier. | |
MY100768A (en) | Magnetic disc apparatus. | |
GB1420665A (en) | Method and apparatus for transducer temperature compensation | |
DE3784644D1 (de) | Geraet zum aufzeichnen und wiedergeben einer optischen platte mit herabgesetzter nullpunktsabweichung in ihrem spurverfolgungsfehlersignal. | |
EP0147066A3 (de) | Abtastungseinrichtung | |
CA2040701A1 (en) | Information recording/reproducing apparatus | |
NO851231L (no) | Anordning for automatisk lesing av informasjon paa bevegelige gjenstander. | |
ATE37937T1 (de) | Aus zwei teleskopisch angeordneten teilen bestehende vorrichtung. | |
TW234182B (de) | ||
GB8415194D0 (en) | Pallet transport | |
ES8204868A1 (es) | Un dispositivo de enfoque optico | |
DE68918175D1 (de) | Rückgekoppelte Steuervorrichtung für ein optisches Aufzeichnungs- und Wiedergabegerät. | |
MY113575A (en) | Recording information on an optical disc without using pre-manufactured tracks | |
ATE140407T1 (de) | Schweissvorrichtung | |
ATE73950T1 (de) | Geraet zum aufzeichnen und/oder wiedergeben von informationen auf einen/von einem plattenfoermigen aufzeichnungstraeger. | |
DE3681479D1 (de) | Fahrzeugleiteinrichtung. | |
US5161467A (en) | Industrial robot system | |
DE3587320D1 (de) | Vorrichtung zum nachweis der absoluten stellung eines servoregelsystems. | |
EP0387019A3 (de) | Einrichtung zur Spurverfolgung für Gerät für optische Scheiben |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PC | Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee) |
Effective date: 20060929 |