HK148394A - Circuit for an audio and/or video disk playback device - Google Patents
Circuit for an audio and/or video disk playback deviceInfo
- Publication number
- HK148394A HK148394A HK148394A HK148394A HK148394A HK 148394 A HK148394 A HK 148394A HK 148394 A HK148394 A HK 148394A HK 148394 A HK148394 A HK 148394A HK 148394 A HK148394 A HK 148394A
- Authority
- HK
- Hong Kong
- Prior art keywords
- coarse
- drive
- pct
- radial
- audio
- Prior art date
Links
- 238000011156 evaluation Methods 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 abstract 1
Classifications
-
- 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
-
- 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
- G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
- G11B7/08505—Methods for track change, selection or preliminary positioning by moving the head
-
- 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
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
- Rotational Drive Of Disk (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Control Of Position Or Direction (AREA)
- Television Signal Processing For Recording (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853508421 DE3508421A1 (de) | 1985-03-09 | 1985-03-09 | Schaltungsanordnung fuer ein abspielgeraet von audio- und / oder videoplatten |
| PCT/EP1986/000076 WO1986005307A1 (en) | 1985-03-09 | 1986-02-15 | Circuit for an audio and/or video disk playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| HK148394A true HK148394A (en) | 1995-01-06 |
Family
ID=6264696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| HK148394A HK148394A (en) | 1985-03-09 | 1994-12-30 | Circuit for an audio and/or video disk playback device |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4794579A (da) |
| EP (1) | EP0214200B1 (da) |
| JP (1) | JP2703222B2 (da) |
| KR (1) | KR940003549B1 (da) |
| AT (1) | ATE48718T1 (da) |
| DE (2) | DE3508421A1 (da) |
| DK (1) | DK167259B1 (da) |
| HK (1) | HK148394A (da) |
| WO (1) | WO1986005307A1 (da) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2578973B2 (ja) * | 1989-05-01 | 1997-02-05 | パイオニア株式会社 | オン／オフトラック検出機能を有するコンパチブルディスクプレーヤ |
| NL9000131A (nl) * | 1990-01-19 | 1991-08-16 | Philips Nv | Lees- en/of schrijfinrichting. |
| EP0649132B1 (en) * | 1993-09-28 | 1999-11-24 | Sony Corporation | Disc eccentricity measuring apparatus and method thereof and apparatus for recording and/or reproducing disc-shaped recording medium |
| DE4424216B4 (de) * | 1994-07-09 | 2005-06-16 | Robert Bosch Gmbh | Schaltungsanordnung zur Spurnachführung für ein Abspielgerät |
| DE19813246C2 (de) * | 1998-03-25 | 2002-12-12 | Sks Stakusit Bautechnik Gmbh | Rollladenführungsleiste |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4703467A (en) * | 1972-10-24 | 1987-10-27 | Discovision Associates | Video disc read back scanner |
| GB1577133A (en) * | 1976-03-19 | 1980-10-22 | Rca Corp | Video information record and playback apparatus |
| US4234837A (en) * | 1979-01-12 | 1980-11-18 | Mca Discovision, Inc. | Digital center tracking system |
| DE3339736C1 (de) * | 1983-11-03 | 1985-06-05 | Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen | Spurfolgesystem zur Korrektur von Tangentenfehlwinkeln bei optischer Plattenabtastung |
-
1985
- 1985-03-09 DE DE19853508421 patent/DE3508421A1/de not_active Withdrawn
-
1986
- 1986-02-15 US US06/939,429 patent/US4794579A/en not_active Expired - Lifetime
- 1986-02-15 AT AT86901383T patent/ATE48718T1/de not_active IP Right Cessation
- 1986-02-15 JP JP61501212A patent/JP2703222B2/ja not_active Expired - Lifetime
- 1986-02-15 DE DE8686901383T patent/DE3667565D1/de not_active Expired - Lifetime
- 1986-02-15 WO PCT/EP1986/000076 patent/WO1986005307A1/de active IP Right Grant
- 1986-02-15 KR KR1019860700785A patent/KR940003549B1/ko not_active IP Right Cessation
- 1986-02-15 EP EP86901383A patent/EP0214200B1/de not_active Expired
- 1986-11-06 DK DK531586A patent/DK167259B1/da not_active IP Right Cessation
-
1994
- 1994-12-30 HK HK148394A patent/HK148394A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1986005307A1 (en) | 1986-09-12 |
| DK531586A (da) | 1986-11-06 |
| ATE48718T1 (de) | 1989-12-15 |
| DK531586D0 (da) | 1986-11-06 |
| DE3508421A1 (de) | 1986-09-11 |
| KR870700165A (ko) | 1987-03-14 |
| DE3667565D1 (de) | 1990-01-18 |
| KR940003549B1 (ko) | 1994-04-23 |
| US4794579A (en) | 1988-12-27 |
| JPS62502152A (ja) | 1987-08-20 |
| JP2703222B2 (ja) | 1998-01-26 |
| EP0214200B1 (de) | 1989-12-13 |
| EP0214200A1 (de) | 1987-03-18 |
| DK167259B1 (da) | 1993-09-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PF | Patent in force | ||
| PE | Patent expired |
Effective date: 20060214 |