GB8505488D0 - Servo error reduction apparatus - Google Patents

Servo error reduction apparatus

Info

Publication number
GB8505488D0
GB8505488D0 GB858505488A GB8505488A GB8505488D0 GB 8505488 D0 GB8505488 D0 GB 8505488D0 GB 858505488 A GB858505488 A GB 858505488A GB 8505488 A GB8505488 A GB 8505488A GB 8505488 D0 GB8505488 D0 GB 8505488D0
Authority
GB
United Kingdom
Prior art keywords
reduction apparatus
servo error
error reduction
servo
reduction
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.)
Withdrawn
Application number
GB858505488A
Other versions
GB2158611A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
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 RCA Corp filed Critical RCA Corp
Publication of GB8505488D0 publication Critical patent/GB8505488D0/en
Publication of GB2158611A publication Critical patent/GB2158611A/en
Withdrawn legal-status Critical Current

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
    • 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
    • G11B7/095—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 discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks
GB08505488A 1984-05-07 1985-03-04 Servo error reduction apparatus for disc record playback system Withdrawn GB2158611A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60741084A 1984-05-07 1984-05-07

Publications (2)

Publication Number Publication Date
GB8505488D0 true GB8505488D0 (en) 1985-04-03
GB2158611A GB2158611A (en) 1985-11-13

Family

ID=24432147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08505488A Withdrawn GB2158611A (en) 1984-05-07 1985-03-04 Servo error reduction apparatus for disc record playback system

Country Status (4)

Country Link
JP (1) JPS60246026A (en)
DE (1) DE3507976A1 (en)
FR (1) FR2563935A1 (en)
GB (1) GB2158611A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1261467A (en) * 1985-11-28 1989-09-26 Akira Minami Focus servomechanism control system of optical disc system having offset setting means
JPS62145570A (en) * 1985-12-19 1987-06-29 Victor Co Of Japan Ltd Disk driving device
JP2525782B2 (en) * 1986-09-20 1996-08-21 パイオニア株式会社 Servo device in recording disk reproducing device
JPH0770087B2 (en) * 1986-09-20 1995-07-31 パイオニア株式会社 Servo device in recording disk reproducing device
US5077719A (en) * 1987-08-28 1991-12-31 Fujitsu Limited Optical disk access system
NL8702261A (en) * 1987-09-23 1989-04-17 Philips Nv RECORDING INFORMATION AND / OR READING SYSTEM, AND A RECORD BRACKET AND RECORDING AND / OR READING DEVICE FOR USE IN SUCH A SYSTEM.
US5251194A (en) * 1989-04-17 1993-10-05 Mitsubishi Denki Kabushiki Kaisha Techniques for controlling beam position and focus in optical disk drives
EP0395403B1 (en) * 1989-04-28 1996-08-14 Canon Kabushiki Kaisha Optical information recording/ reproducing apparatus comprising digital servo device for performing focusing and/or tracking of optical head based on digital information
JPH0373420A (en) * 1989-04-28 1991-03-28 Canon Inc Optical information recording and reproducing device
DE69021889T2 (en) * 1989-12-04 1996-05-02 Thomson Brandt Gmbh TRACK CONTROL SYSTEM FOR AN OPTICAL RECORDING AND SCANING UNIT.
DE4103974A1 (en) * 1991-02-09 1992-08-13 Thomson Brandt Gmbh OPTICAL RECORDING AND / OR PLAYBACK DEVICE
JP3263258B2 (en) * 1994-09-30 2002-03-04 富士通株式会社 Method and apparatus for detecting actuator offset amount of optical disk device
KR100400045B1 (en) * 2001-09-03 2003-09-29 삼성전자주식회사 Apparatus and method for excluding disturbance
EP1553572A1 (en) * 2004-01-08 2005-07-13 Deutsche Thomson-Brandt Gmbh Method for compensating deviations of an optical recording medium
JP4826354B2 (en) * 2005-09-12 2011-11-30 ソニー株式会社 Control circuit and optical disk apparatus
JP2009123267A (en) 2007-11-13 2009-06-04 Funai Electric Co Ltd Optical disc playback device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1576426A (en) * 1976-03-19 1980-10-08 Rca Corp Eccentricity compensating system in recording and playbackapparatus
NL7711634A (en) * 1977-10-24 1979-04-26 Philips Nv TACHOMETER SYSTEM.
JPS5753830A (en) * 1980-09-12 1982-03-31 Sony Corp Tracking servo device for optical information signal reproducer
US4536809A (en) * 1982-05-10 1985-08-20 Digital Equipment Corporation Adaptive misposition correcting method and apparatus for magnetic disk servo system

Also Published As

Publication number Publication date
JPS60246026A (en) 1985-12-05
FR2563935A1 (en) 1985-11-08
GB2158611A (en) 1985-11-13
DE3507976A1 (en) 1985-11-07

Similar Documents

Publication Publication Date Title
GB8515701D0 (en) Recording apparatus
GB8502593D0 (en) Carriage for sorting-machines
EP0177284A3 (en) Force-detecting apparatus
GB2162829B (en) Vessel-filling apparatus
EP0155077A3 (en) Servo system
GB8504854D0 (en) Control apparatus
KR940000641B1 (en) Digital servo apparatus
EP0175456A3 (en) Phototreating apparatus
GB8505488D0 (en) Servo error reduction apparatus
GB2166889B (en) Servo positioning system
IL76039A (en) Servo system valve apparatus
GB8516037D0 (en) Steering apparatus
DE3570788D1 (en) Magnetic-tape apparatus
GB8517668D0 (en) Steering apparatus
GB2155657B (en) Position servo system
GB2153123B (en) Recording apparatus
GB2158978B (en) Recording apparatus
GB2168667B (en) Feeder-breaker apparatus
GB8504081D0 (en) Jig apparatus
GB8410535D0 (en) Apparatus
DE3574098D1 (en) Recording apparatus
KR930002115B1 (en) Dropout correcting apparatus
EP0178869A3 (en) Servo system
DE3568078D1 (en) Servo apparatus
GB8521588D0 (en) Recording & waveforming apparatus

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)