JPS57199904A - Inclination controller - Google Patents

Inclination controller

Info

Publication number
JPS57199904A
JPS57199904A JP8593281A JP8593281A JPS57199904A JP S57199904 A JPS57199904 A JP S57199904A JP 8593281 A JP8593281 A JP 8593281A JP 8593281 A JP8593281 A JP 8593281A JP S57199904 A JPS57199904 A JP S57199904A
Authority
JP
Japan
Prior art keywords
signal
tracking error
error signal
inclination
tracking
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.)
Granted
Application number
JP8593281A
Other languages
Japanese (ja)
Other versions
JPH0142054B2 (en
Inventor
Tsuneo Hirose
Shinichi Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8593281A priority Critical patent/JPS57199904A/en
Publication of JPS57199904A publication Critical patent/JPS57199904A/en
Publication of JPH0142054B2 publication Critical patent/JPH0142054B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/34—Guiding record carriers during transducing operation, e.g. for 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
    • G11B7/095—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
    • G11B7/0956—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 tilt, skew, warp or inclination of the disc, i.e. maintain the optical axis at right angles to the disc

Abstract

PURPOSE:To prevent generation of tracking errors owing to the inclination of an optical axis by obtaining the inclination error signal corresponding to the inclination of a disc from the tracking error signal of a pit-less part and controlling the inclination, etc. of the optical axis in accordance with this signal. CONSTITUTION:The rugged signal of an optical disc 2 enters a two-split light detector 8, and both outputs from the detector 8 are inputted to a rugged signal reproducing part 9 and a differential tracking error extracting part 10, by which the rugged signal is reproduced, and a tracking error signal is created. These signals are inputted to an extracting part 11 for the tracking error signal of a pit-less part, from which the tracking error signal of only the pit-less part is extracted. Further, this signal drives an angle adjusting actuator 14 via an amplifier part 12, thereby adjusting the optical axis so as to be made perpendicular to the disc 2. The tracking error signal from the part 10 drives a tracking actuator 15 via an amplifier part 13.
JP8593281A 1981-06-03 1981-06-03 Inclination controller Granted JPS57199904A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8593281A JPS57199904A (en) 1981-06-03 1981-06-03 Inclination controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8593281A JPS57199904A (en) 1981-06-03 1981-06-03 Inclination controller

Publications (2)

Publication Number Publication Date
JPS57199904A true JPS57199904A (en) 1982-12-08
JPH0142054B2 JPH0142054B2 (en) 1989-09-08

Family

ID=13872526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8593281A Granted JPS57199904A (en) 1981-06-03 1981-06-03 Inclination controller

Country Status (1)

Country Link
JP (1) JPS57199904A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5848243A (en) * 1981-09-17 1983-03-22 Mitsubishi Electric Corp Device for tracking track of optical recorder and reproducer
JPS58146036A (en) * 1982-02-23 1983-08-31 Foster Denki Kk Optical system information reproducing device
JPS59189013U (en) * 1983-06-01 1984-12-14 三菱電機株式会社 Compressor holding device
JPS6077028U (en) * 1983-11-02 1985-05-29 パイオニア株式会社 Optical recording disc playback device
JPS60143447A (en) * 1983-12-30 1985-07-29 Sony Corp Optical disk player
JPS60142822U (en) * 1984-03-01 1985-09-21 パイオニア株式会社 optical disc player
JPS6139943A (en) * 1984-08-01 1986-02-26 Matsushita Electric Ind Co Ltd Optical disc reproducing device
JPS6139945A (en) * 1984-08-01 1986-02-26 Matsushita Electric Ind Co Ltd Optical disc reproducing device
JPS61160844A (en) * 1985-01-09 1986-07-21 Hitachi Ltd Optical recording and reproducing device
JPS61210531A (en) * 1985-03-04 1986-09-18 コーニンクレツカ　フイリツプス　エレクトロニクス　エヌ　ヴイ Electrooptic apparatus
JPS6262439A (en) * 1985-09-12 1987-03-19 Matsushita Electric Ind Co Ltd Correcting device for inclination of light beam
JPS6398845A (en) * 1986-10-15 1988-04-30 Ricoh Co Ltd Adjusting method for position of objective lens
EP0296590A2 (en) * 1987-06-23 1988-12-28 Omron Tateisi Electronics Co. Optical card processing apparatus
EP0300481A2 (en) * 1987-07-22 1989-01-25 Omron Tateisi Electronics Co. Apparatus for detecting inclination of optical card
US5179268A (en) * 1987-07-22 1993-01-12 Omron Tateisi Electronic Co. Apparatus for detecting inclination of an optical card
US5264687A (en) * 1987-06-23 1993-11-23 Omron Tateisi Electronics, Co. Optical card processing apparatus
GB2356968A (en) * 1999-09-29 2001-06-06 Matsushita Electric Ind Co Ltd Optical disk apparatus spindle motor

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6325413B2 (en) * 1981-09-17 1988-05-25 Mitsubishi Electric Corp
JPS5848243A (en) * 1981-09-17 1983-03-22 Mitsubishi Electric Corp Device for tracking track of optical recorder and reproducer
JPS58146036A (en) * 1982-02-23 1983-08-31 Foster Denki Kk Optical system information reproducing device
JPS59189013U (en) * 1983-06-01 1984-12-14 三菱電機株式会社 Compressor holding device
JPS6077028U (en) * 1983-11-02 1985-05-29 パイオニア株式会社 Optical recording disc playback device
JPH0521705Y2 (en) * 1983-11-02 1993-06-03
JPS60143447A (en) * 1983-12-30 1985-07-29 Sony Corp Optical disk player
JPS60142822U (en) * 1984-03-01 1985-09-21 パイオニア株式会社 optical disc player
JPS6139943A (en) * 1984-08-01 1986-02-26 Matsushita Electric Ind Co Ltd Optical disc reproducing device
JPS6139945A (en) * 1984-08-01 1986-02-26 Matsushita Electric Ind Co Ltd Optical disc reproducing device
JPS61160844A (en) * 1985-01-09 1986-07-21 Hitachi Ltd Optical recording and reproducing device
JPS61210531A (en) * 1985-03-04 1986-09-18 コーニンクレツカ　フイリツプス　エレクトロニクス　エヌ　ヴイ Electrooptic apparatus
JPS6262439A (en) * 1985-09-12 1987-03-19 Matsushita Electric Ind Co Ltd Correcting device for inclination of light beam
JPS6398845A (en) * 1986-10-15 1988-04-30 Ricoh Co Ltd Adjusting method for position of objective lens
EP0296590A2 (en) * 1987-06-23 1988-12-28 Omron Tateisi Electronics Co. Optical card processing apparatus
US5264687A (en) * 1987-06-23 1993-11-23 Omron Tateisi Electronics, Co. Optical card processing apparatus
EP0300481A2 (en) * 1987-07-22 1989-01-25 Omron Tateisi Electronics Co. Apparatus for detecting inclination of optical card
US5179268A (en) * 1987-07-22 1993-01-12 Omron Tateisi Electronic Co. Apparatus for detecting inclination of an optical card
GB2356968A (en) * 1999-09-29 2001-06-06 Matsushita Electric Ind Co Ltd Optical disk apparatus spindle motor
GB2356968B (en) * 1999-09-29 2004-04-07 Matsushita Electric Ind Co Ltd Optical disk apparatus and method of installing its spindle motor
US6792614B1 (en) 1999-09-29 2004-09-14 Matsushita Electric Industrial Co., Ltd. Optical disk apparatus and method of installing its spindle motor

Also Published As

Publication number Publication date
JPH0142054B2 (en) 1989-09-08

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