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 supportInfo
- 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
Links
- 230000003287 optical effect Effects 0.000 title 1
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
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853514034 DE3514034A1 (en) | 1985-04-18 | 1985-04-18 | AUTOMATIC CORRECTION SYSTEM FOR THE SERVO CIRCUIT OF A DEVICE WITH OPTICAL SCANNING OF A ROTATING INFORMATION CARRIER |
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 (en) |
JP (1) | JPH0792989B2 (en) |
KR (1) | KR940002962B1 (en) |
DE (2) | DE3514034A1 (en) |
DK (1) | DK166054C (en) |
HK (1) | HK148494A (en) |
SG (1) | SG8892G (en) |
WO (1) | WO1986006201A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02230515A (en) * | 1989-03-03 | 1990-09-12 | Sony Corp | Optical recording and reproducing device |
Family Cites Families (12)
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 |
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 (en) * | 1982-08-20 | 1984-02-28 | Matsushita Electric Ind Co Ltd | Reading circuit of track address |
JPS59117762A (en) * | 1982-12-24 | 1984-07-07 | Nippon Columbia Co Ltd | Disc reproducing device |
JPS59167879A (en) * | 1983-03-15 | 1984-09-21 | Toshiba Corp | Detector of track jump in disc record reproducing system |
JPS59201274A (en) * | 1983-04-27 | 1984-11-14 | Sony Corp | Disk reproducing device |
JPS607658A (en) * | 1983-06-24 | 1985-01-16 | Victor Co Of Japan Ltd | Method for correcting address of disc-like information recording medium |
JPS6043270A (en) * | 1983-08-19 | 1985-03-07 | Sony Corp | Disk player |
NL8303565A (en) * | 1983-10-17 | 1985-05-17 | Philips Nv | Apparatus for displaying information from a plate-shaped optically readable record carrier. |
-
1985
- 1985-04-18 DE DE19853514034 patent/DE3514034A1/en not_active Withdrawn
-
1986
- 1986-04-17 EP EP86902819A patent/EP0220251B1/en not_active Expired - Lifetime
- 1986-04-17 WO PCT/EP1986/000224 patent/WO1986006201A1/en active IP Right Grant
- 1986-04-17 JP JP61502607A patent/JPH0792989B2/en not_active Expired - Lifetime
- 1986-04-17 DE DE8686902819T patent/DE3674534D1/en not_active Expired - Lifetime
- 1986-12-18 KR KR8670904A patent/KR940002962B1/en not_active IP Right Cessation
- 1986-12-18 DK DK614286A patent/DK166054C/en not_active IP Right Cessation
-
1992
- 1992-01-31 SG SG88/92A patent/SG8892G/en unknown
-
1994
- 1994-12-30 HK HK148494A patent/HK148494A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE3674534D1 (en) | 1990-10-31 |
SG8892G (en) | 1992-03-20 |
DE3514034A1 (en) | 1986-10-23 |
WO1986006201A1 (en) | 1986-10-23 |
DK166054B (en) | 1993-03-01 |
KR940002962B1 (en) | 1994-04-09 |
JPS62502002A (en) | 1987-08-06 |
EP0220251A1 (en) | 1987-05-06 |
DK614286A (en) | 1986-12-18 |
DK614286D0 (en) | 1986-12-18 |
EP0220251B1 (en) | 1990-09-26 |
KR880700407A (en) | 1988-03-15 |
JPH0792989B2 (en) | 1995-10-09 |
DK166054C (en) | 1993-07-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PE | Patent expired |
Effective date: 20060416 |