JPS57199904A - Inclination controller - Google Patents
Inclination controllerInfo
- 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
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
Landscapes
- Optical Recording Or Reproduction (AREA)
- Length Measuring Devices By Optical Means (AREA)
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.
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)
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 |
JPS6139945A (en) * | 1984-08-01 | 1986-02-26 | Matsushita Electric Ind Co Ltd | Optical disc reproducing device |
JPS6139943A (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 |
-
1981
- 1981-06-03 JP JP8593281A patent/JPS57199904A/en active Granted
Cited By (21)
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 |
JPS6139945A (en) * | 1984-08-01 | 1986-02-26 | Matsushita Electric Ind Co Ltd | Optical disc reproducing device |
JPS6139943A (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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