HK148494A - Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support - Google Patents

Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support

Info

Publication number
HK148494A
HK148494A HK148494A HK148494A HK148494A HK 148494 A HK148494 A HK 148494A HK 148494 A HK148494 A HK 148494A HK 148494 A HK148494 A HK 148494A HK 148494 A HK148494 A HK 148494A
Authority
HK
Hong Kong
Prior art keywords
servo
circuit
optical scanning
correction system
automatic correction
Prior art date
Application number
HK148494A
Other languages
English (en)
Inventor
Dieter Baas
Werner Nutz
Original Assignee
Thomson Brandt Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson Brandt Gmbh filed Critical Thomson Brandt Gmbh
Publication of HK148494A publication Critical patent/HK148494A/xx

Links

Classifications

    • 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
    • G11B7/09—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
    • G11B7/0948—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 detection and avoidance or compensation of imperfections on the carrier, e.g. dust, scratches, dropouts
    • 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
    • G11B21/106—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 on disks
    • 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
HK148494A 1985-04-18 1994-12-30 Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support HK148494A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853514034 DE3514034A1 (de) 1985-04-18 1985-04-18 Automatisches korrektursystem fuer den servokreis eines geraetes mit optischer abtastung eines rotierenden informationstraegers
PCT/EP1986/000224 WO1986006201A1 (en) 1985-04-18 1986-04-17 Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support

Publications (1)

Publication Number Publication Date
HK148494A true HK148494A (en) 1995-01-06

Family

ID=6268492

Family Applications (1)

Application Number Title Priority Date Filing Date
HK148494A HK148494A (en) 1985-04-18 1994-12-30 Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support

Country Status (8)

Country Link
EP (1) EP0220251B1 (ja)
JP (1) JPH0792989B2 (ja)
KR (1) KR940002962B1 (ja)
DE (2) DE3514034A1 (ja)
DK (1) DK166054C (ja)
HK (1) HK148494A (ja)
SG (1) SG8892G (ja)
WO (1) WO1986006201A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02230515A (ja) * 1989-03-03 1990-09-12 Sony Corp 光学式記録再生装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55113172A (en) * 1979-02-19 1980-09-01 Matsushita Electric Ind Co Ltd Detection system for abnormal reproduction state
US4307418A (en) * 1979-10-12 1981-12-22 Rca Corporation Video disc player system for correlating stylus position with information previously detected from disc
US4313134A (en) * 1979-10-12 1982-01-26 Rca Corporation Track error correction system as for video disc player
JPS57104386A (en) * 1980-12-19 1982-06-29 Trio Kenwood Corp Video disc playback device
US4488278A (en) * 1982-08-17 1984-12-11 Rca Corporation Coding system for digital audio disc record
JPS5936385A (ja) * 1982-08-20 1984-02-28 Matsushita Electric Ind Co Ltd トラツクアドレス読み取り回路
JPS59117762A (ja) * 1982-12-24 1984-07-07 Nippon Columbia Co Ltd デイスク再生装置
JPS59167879A (ja) * 1983-03-15 1984-09-21 Toshiba Corp デイスクレコ−ド再生系におけるトラツク飛び検出装置
JPS59201274A (ja) * 1983-04-27 1984-11-14 Sony Corp デイスク再生装置
JPS607658A (ja) * 1983-06-24 1985-01-16 Victor Co Of Japan Ltd 円盤状情報記録媒体の欠陥検査装置
JPS6043270A (ja) * 1983-08-19 1985-03-07 Sony Corp デイスク・プレ−ヤ
NL8303565A (nl) * 1983-10-17 1985-05-17 Philips Nv Inrichting voor het weergeven van informatie van een plaatvormige optisch uitleesbare registratiedrager.

Also Published As

Publication number Publication date
DK166054B (da) 1993-03-01
DK166054C (da) 1993-07-12
KR880700407A (ko) 1988-03-15
DK614286D0 (da) 1986-12-18
JPS62502002A (ja) 1987-08-06
WO1986006201A1 (en) 1986-10-23
JPH0792989B2 (ja) 1995-10-09
EP0220251A1 (de) 1987-05-06
DK614286A (da) 1986-12-18
DE3674534D1 (de) 1990-10-31
KR940002962B1 (en) 1994-04-09
DE3514034A1 (de) 1986-10-23
SG8892G (en) 1992-03-20
EP0220251B1 (de) 1990-09-26

Similar Documents

Publication Publication Date Title
AU7361287A (en) Optical turntable system
EP0372629A3 (en) Apparatus for optically scanning an information plane
GB8702568D0 (en) Scanning optical system
AU7576687A (en) Apparatus for scanning an optical record carrier
EP0195657A3 (en) Optical pickup
EP0238162A3 (en) Optical information reproducing apparatus
EP0188272A3 (en) Sensor aligning means for optical reading apparatus
EP0210623A3 (en) Optical imformation reproducing apparatus
EP0288970A3 (en) Optical system for flyingspot scanning system
AU586607B2 (en) Device for scanning a radiation-reflecting information surface with optical radiation
GB2196115B (en) Optical pickup device
EP0207517A3 (en) Optical pickup apparatus
EP0238055A3 (en) Optical recording apparatus
GB8604819D0 (en) Optical storage system
EP0296458A3 (en) A focus and tracking support for an optical record lens
GB2157845B (en) Optical mechanical scanning device
GB8601578D0 (en) Light scanning optical system
GB2185812B (en) Optical reading device
AU7145887A (en) Optical record carrier and apparatus for reading the record carrier
GB8517447D0 (en) Positioning optical fibre
HK148494A (en) Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support
HK20992A (en) Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support
GB2196504B (en) A focussing technique for an optical sensing system
FR2602687B1 (fr) Plaque antifriction libre a recentrage automatique pour fixation de securite
GB8511360D0 (en) Optical scanning system

Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20060416