HK176795A - 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
HK176795A
HK176795A HK176795A HK176795A HK176795A HK 176795 A HK176795 A HK 176795A HK 176795 A HK176795 A HK 176795A HK 176795 A HK176795 A HK 176795A HK 176795 A HK176795 A HK 176795A
Authority
HK
Hong Kong
Prior art keywords
circuit
servo
scanning
fact
anomalies
Prior art date
Application number
HK176795A
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 HK176795A publication Critical patent/HK176795A/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
    • G11B7/0946—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
    • 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
    • G11B7/0948—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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Communication System (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
HK176795A 1985-04-18 1995-11-16 Automatic correction system for the servo-circuit of a device with optical scanning of a rotating information support HK176795A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853514035 DE3514035A1 (de) 1985-04-18 1985-04-18 Automatisches korrektursystem fuer den servokreis eines geraetes mit optischer abtastung eines rotierenden informationstraegers
PCT/EP1986/000223 WO1986006200A1 (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
HK176795A true HK176795A (en) 1995-11-24

Family

ID=6268493

Family Applications (1)

Application Number Title Priority Date Filing Date
HK176795A HK176795A (en) 1985-04-18 1995-11-16 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) EP0221936B1 (xx)
JP (1) JPH0785344B2 (xx)
KR (1) KR970006831B1 (xx)
AT (1) ATE57785T1 (xx)
DE (2) DE3514035A1 (xx)
DK (1) DK166055C (xx)
HK (1) HK176795A (xx)
WO (1) WO1986006200A1 (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3862875B2 (ja) * 1998-10-29 2006-12-27 パイオニア株式会社 ディスク再生装置
EP1509913A1 (en) * 2002-05-21 2005-03-02 Koninklijke Philips Electronics N.V. Optical disk system with improved playability

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4313134A (en) * 1979-10-12 1982-01-26 Rca Corporation Track error correction system as for video disc player
US4307418A (en) * 1979-10-12 1981-12-22 Rca Corporation Video disc player system for correlating stylus position with information previously detected from disc
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
DE3675150D1 (de) 1990-11-29
DK614386D0 (da) 1986-12-18
KR880700408A (ko) 1988-03-15
WO1986006200A1 (en) 1986-10-23
KR970006831B1 (ko) 1997-04-30
DK166055B (da) 1993-03-01
JPH0785344B2 (ja) 1995-09-13
DK166055C (da) 1993-07-12
JPS62502003A (ja) 1987-08-06
EP0221936B1 (de) 1990-10-24
ATE57785T1 (de) 1990-11-15
DE3514035A1 (de) 1986-10-23
DK614386A (da) 1986-12-18
EP0221936A1 (de) 1987-05-20

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Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20060416