JPS4990426A - - Google Patents
Info
- Publication number
- JPS4990426A JPS4990426A JP48137425A JP13742573A JPS4990426A JP S4990426 A JPS4990426 A JP S4990426A JP 48137425 A JP48137425 A JP 48137425A JP 13742573 A JP13742573 A JP 13742573A JP S4990426 A JPS4990426 A JP S4990426A
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/20—Driving; Starting; Stopping; Control thereof
- G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive
-
- 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
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
- G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
-
- 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
- G11B7/0908—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 for focusing only
-
- 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
- G11B7/0925—Electromechanical actuators for lens positioning
Landscapes
- Optical Recording Or Reproduction (AREA)
- Moving Of Heads (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US314082A US3914541A (en) | 1972-12-11 | 1972-12-11 | Video disc player |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4990426A true JPS4990426A (US07223432-20070529-C00017.png) | 1974-08-29 |
Family
ID=23218480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48137425A Pending JPS4990426A (US07223432-20070529-C00017.png) | 1972-12-11 | 1973-12-11 |
Country Status (7)
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5838866B2 (ja) * | 1973-12-13 | 1983-08-25 | キヤノン株式会社 | フジヨウソウチ |
| AR205839A1 (es) * | 1974-09-30 | 1976-06-07 | Mca Disco Vision | Servodisposicion para recorrer opticamente y leer simultaneamente un canal de informacion almacenado en un disco de video |
| FR2309012A1 (fr) * | 1975-04-21 | 1976-11-19 | Ibm | Memoire a disque magnetique flexible |
| US4006294A (en) * | 1975-05-27 | 1977-02-01 | Mca Disco-Vision, Inc. | Transducer head assembly with fluid bearing and head height control system |
| FR2312832A1 (fr) * | 1975-05-30 | 1976-12-24 | Thomson Brandt | Dispositif de stabilisation de disques souples, et notamment de video-disques, et appareil de lecture adapte a ce dispositif |
| US4488279A (en) * | 1980-10-20 | 1984-12-11 | Discovision Associates | Video recorder-playback machine |
| US4467467A (en) * | 1980-10-20 | 1984-08-21 | Discovision Associates | Video recorder-playback machine |
| US4507774A (en) * | 1983-03-11 | 1985-03-26 | Eastman Kodak Company | Optical disc and disc-turntable air flow interface assembly |
| US4752836A (en) * | 1984-09-07 | 1988-06-21 | Ivex Corporation | Method and apparatus for reproducing video images to simulate movement within a multi-dimensional space |
| US4661875A (en) * | 1985-01-24 | 1987-04-28 | Victor Company Of Japan, Ltd. | Information storage disc assembly |
| US5150338A (en) * | 1989-08-10 | 1992-09-22 | Hewlett-Packard Company | Optical disk reading and writing system having magnetic write head mounted on an air-bearing slider |
| US5590102A (en) * | 1995-01-12 | 1996-12-31 | Discovision Associates | Recording informatioin on an optical disc without using pre-manufactured tracks |
| US6538836B1 (en) * | 1995-05-08 | 2003-03-25 | Seagate Technology Llc | Microactuator for fine positioning in a disc drive |
| US5978329A (en) * | 1995-06-07 | 1999-11-02 | Discovision Associates | Technique for closed loop servo operation in optical disc tracking control |
| ATE201277T1 (de) * | 1995-12-06 | 2001-06-15 | Discovision Ass | Gerät und verfahren zum regeln der fokussierung |
| US5689485A (en) | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
| US5991114A (en) * | 1997-01-28 | 1999-11-23 | Seagate Technology, Inc. | Disc drive having gram load reducer and method of operating gram load reducer |
| US6282066B1 (en) | 1998-03-20 | 2001-08-28 | Seagate Technology Llc | Microactuator suspension with multiple narrow beams |
| KR20020001742A (ko) | 1999-02-22 | 2002-01-09 | 추후 | 반복 가능한 런아웃 에러 보상 |
| GB2364433A (en) | 1999-05-07 | 2002-01-23 | Seagate Technology Llc | Repeatable runout compensation using iterative learning control in a disc storage system |
| JP2003505818A (ja) | 1999-07-23 | 2003-02-12 | シーゲイト テクノロジー エルエルシー | パラメータがスケジュールされている学習アルゴリズムを使用した再現可能なランナウト補正 |
| US6952320B1 (en) | 1999-12-16 | 2005-10-04 | Seagate Technology Llc | Virtual tracks for repeatable runout compensation |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2137188A (en) * | 1937-11-20 | 1938-11-15 | Stewart C Whitman | Piezoelectric crystal mirror system for sound recording |
| US2654810A (en) * | 1949-11-15 | 1953-10-06 | Miessner Inventions Inc | Photoelectric translating system |
| US3166997A (en) * | 1961-06-28 | 1965-01-26 | Ibm | Hydrostatic film disc stabilizer and spacer |
| US3361873A (en) * | 1962-05-07 | 1968-01-02 | Minnesota Mining & Mfg | Disc recording system |
| US3404224A (en) * | 1964-11-23 | 1968-10-01 | Omar N. Revelo | Audio and video transmitting and receiving system for use as an educational device |
| US3442570A (en) * | 1966-03-02 | 1969-05-06 | Hughes Aircraft Co | Piezoelectric laser beam deflector |
| US3544201A (en) * | 1968-01-02 | 1970-12-01 | Gen Telephone & Elect | Optical beam deflector |
| US3537083A (en) * | 1968-11-27 | 1970-10-27 | Univ Illinois | Flexible surface disc for magnetic recorders with central pneumatic orifice |
| US3706861A (en) * | 1969-09-18 | 1972-12-19 | Rca Corp | Apparatus for mounting and spacing a signal transducer with respect to a recording medium |
| US3701135A (en) * | 1970-10-29 | 1972-10-24 | Control Data Corp | Foil bearing control apparatus |
| DE2136411A1 (de) * | 1971-07-21 | 1973-02-01 | Licentia Gmbh | Abtaster zum abtasten von gespeicherten signalen |
| US3715524A (en) * | 1972-04-20 | 1973-02-06 | Zenith Radio Corp | Electro-optical groove tracking apparatus for video reproducing system |
-
1972
- 1972-12-11 US US314082A patent/US3914541A/en not_active Expired - Lifetime
-
1973
- 1973-12-03 CA CA187,156A patent/CA1004355A/en not_active Expired
- 1973-12-10 IT IT54199/73A patent/IT1000268B/it active
- 1973-12-10 GB GB5703473A patent/GB1458215A/en not_active Expired
- 1973-12-10 FR FR7343944A patent/FR2210064B1/fr not_active Expired
- 1973-12-10 NL NL7316893A patent/NL7316893A/xx not_active Application Discontinuation
- 1973-12-11 JP JP48137425A patent/JPS4990426A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL7316893A (US07223432-20070529-C00017.png) | 1974-06-13 |
| DE2361650A1 (de) | 1974-07-04 |
| IT1000268B (it) | 1976-03-30 |
| GB1458215A (en) | 1976-12-08 |
| FR2210064B1 (US07223432-20070529-C00017.png) | 1976-10-08 |
| CA1004355A (en) | 1977-01-25 |
| FR2210064A1 (US07223432-20070529-C00017.png) | 1974-07-05 |
| DE2361650B2 (de) | 1976-12-02 |
| US3914541A (en) | 1975-10-21 |
