DK28996A - Apparatur og fremgangsmåde til undertrykkelse af elektromagnetisk forstyrrelse - Google Patents
Apparatur og fremgangsmåde til undertrykkelse af elektromagnetisk forstyrrelse Download PDFInfo
- Publication number
- DK28996A DK28996A DK028996A DK28996A DK28996A DK 28996 A DK28996 A DK 28996A DK 028996 A DK028996 A DK 028996A DK 28996 A DK28996 A DK 28996A DK 28996 A DK28996 A DK 28996A
- Authority
- DK
- Denmark
- Prior art keywords
- electromagnetic interference
- suppressing electromagnetic
- suppressing
- interference
- electromagnetic
- Prior art date
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
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- 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
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- 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
- G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
- G11B7/00745—Sectoring or header formats within a track
-
- 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
- G11B7/0901—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 track following only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/035—DC motors; Unipolar motors
- H02K41/0352—Unipolar motors
- H02K41/0354—Lorentz force motors, e.g. voice coil motors
- H02K41/0356—Lorentz force motors, e.g. voice coil motors moving along a straight path
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mathematical Physics (AREA)
- Power Engineering (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Optical Head (AREA)
- Casings For Electric Apparatus (AREA)
- Elimination Of Static Electricity (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/420,381 US5920539A (en) | 1995-01-25 | 1995-04-11 | Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor |
Publications (1)
Publication Number | Publication Date |
---|---|
DK28996A true DK28996A (da) | 1996-10-12 |
Family
ID=23666238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK028996A DK28996A (da) | 1995-04-11 | 1996-03-12 | Apparatur og fremgangsmåde til undertrykkelse af elektromagnetisk forstyrrelse |
Country Status (11)
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US (1) | US5920539A (da) |
EP (1) | EP0741508A3 (da) |
JP (1) | JPH08330776A (da) |
KR (1) | KR100278941B1 (da) |
CN (1) | CN1142662A (da) |
AU (1) | AU722275B2 (da) |
BR (1) | BR9601011A (da) |
CA (1) | CA2170971A1 (da) |
DK (1) | DK28996A (da) |
IL (1) | IL117740A0 (da) |
NO (1) | NO961097L (da) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5920984A (en) * | 1993-12-10 | 1999-07-13 | Ericsson Ge Mobile Communications Inc. | Method for the suppression of electromagnetic interference in an electronic system |
US6370290B1 (en) * | 1997-09-19 | 2002-04-09 | Uniphase Corporation | Integrated wavelength-select transmitter |
US6160517A (en) * | 1998-01-20 | 2000-12-12 | Dell Usa, Llp | Method and apparatus for testing electronic systems using electromagnetic emissions profiles |
SE512979C2 (sv) * | 1998-10-23 | 2000-06-12 | Ericsson Telefon Ab L M | Anordning och förfarande för störningsdämpning av elektromagnetiska störningar |
JP4118475B2 (ja) * | 1999-09-21 | 2008-07-16 | 株式会社日立国際電気 | 映像記録再生方法および装置 |
JP4483021B2 (ja) * | 2000-04-19 | 2010-06-16 | ソニー株式会社 | アナモルフィックプリズム及び光学ヘッド並びに光記録再生装置 |
US7095957B1 (en) | 2000-08-17 | 2006-08-22 | At&T Corp. | Optical/radio local access network |
KR100813943B1 (ko) * | 2001-04-30 | 2008-03-14 | 삼성전자주식회사 | 복합 반사프리즘 및 이를 채용한 광픽업장치 |
EP1460739A1 (en) * | 2003-03-19 | 2004-09-22 | Agilent Technologies, Inc. - a Delaware corporation - | Transmitter optical sub assembly |
US20040268033A1 (en) * | 2003-06-24 | 2004-12-30 | Seagate Technology Llc | Refreshing data in a data storage device |
TW200516569A (en) * | 2003-11-06 | 2005-05-16 | Benq Corp | Flexible flat cable and disk drive using the same |
DE102004019692A1 (de) * | 2004-04-20 | 2005-11-10 | Deutsche Thomson-Brandt Gmbh | Verfahren und Vorrichtung für das Spurzählen bei optischen Aufzeichnungsträgern |
US8174788B2 (en) * | 2008-01-28 | 2012-05-08 | Hitachi Global Storage Technologies, Netherlands B.V. | Motor mount for interference suppression in a hard disk drive |
US8095234B2 (en) | 2008-04-17 | 2012-01-10 | Teradyne, Inc. | Transferring disk drives within disk drive testing systems |
US9183145B2 (en) * | 2009-04-27 | 2015-11-10 | Intel Corporation | Data caching in a network communications processor architecture |
US9444757B2 (en) | 2009-04-27 | 2016-09-13 | Intel Corporation | Dynamic configuration of processing modules in a network communications processor architecture |
US9461930B2 (en) | 2009-04-27 | 2016-10-04 | Intel Corporation | Modifying data streams without reordering in a multi-thread, multi-flow network processor |
US9727508B2 (en) | 2009-04-27 | 2017-08-08 | Intel Corporation | Address learning and aging for network bridging in a network processor |
US9755947B2 (en) | 2010-05-18 | 2017-09-05 | Intel Corporation | Hierarchical self-organizing classification processing in a network switch |
US9779780B2 (en) | 2010-06-17 | 2017-10-03 | Teradyne, Inc. | Damping vibrations within storage device testing systems |
US8687349B2 (en) | 2010-07-21 | 2014-04-01 | Teradyne, Inc. | Bulk transfer of storage devices using manual loading |
US9001456B2 (en) | 2010-08-31 | 2015-04-07 | Teradyne, Inc. | Engaging test slots |
TWI482584B (zh) * | 2012-05-03 | 2015-04-21 | Wistron Corp | 易拆裝的電磁屏蔽裝置 |
CN104040628B (zh) * | 2012-11-06 | 2017-02-22 | 松下知识产权经营株式会社 | 光盘装置 |
US9459312B2 (en) | 2013-04-10 | 2016-10-04 | Teradyne, Inc. | Electronic assembly test system |
CN104482945B (zh) * | 2014-12-17 | 2017-05-17 | 许继集团有限公司 | 一种传感器过电压保护和信号调理*** |
US10416471B2 (en) | 2016-10-17 | 2019-09-17 | Cymer, Llc | Spectral feature control apparatus |
US10725091B2 (en) | 2017-08-28 | 2020-07-28 | Teradyne, Inc. | Automated test system having multiple stages |
US10845410B2 (en) | 2017-08-28 | 2020-11-24 | Teradyne, Inc. | Automated test system having orthogonal robots |
US10948534B2 (en) | 2017-08-28 | 2021-03-16 | Teradyne, Inc. | Automated test system employing robotics |
US11226390B2 (en) | 2017-08-28 | 2022-01-18 | Teradyne, Inc. | Calibration process for an automated test system |
CN109460324B (zh) * | 2017-12-30 | 2019-12-17 | 深圳北芯生命科技有限公司 | Ffr主机的数据恢复***和数据恢复方法 |
US10983145B2 (en) | 2018-04-24 | 2021-04-20 | Teradyne, Inc. | System for testing devices inside of carriers |
TWI683526B (zh) * | 2018-05-25 | 2020-01-21 | 茂達電子股份有限公司 | 馬達驅動電路 |
US10775408B2 (en) | 2018-08-20 | 2020-09-15 | Teradyne, Inc. | System for testing devices inside of carriers |
GB2576579A (en) * | 2018-08-24 | 2020-02-26 | Magnetic Shields Ltd | Magnetic shield device |
CN109547150B (zh) * | 2018-10-29 | 2020-07-31 | 武汉光迅科技股份有限公司 | 一种用于光开关的无干扰点选择方法和装置 |
RU2722407C1 (ru) * | 2019-09-03 | 2020-05-29 | Акционерное общество "Научно-исследовательский институт "Полюс" им. М.Ф. Стельмаха" (АО "НИИ "Полюс" им. М.Ф. Стельмаха) | Импульсный лазерный полупроводниковый излучатель |
CN111240252B (zh) * | 2020-03-25 | 2021-04-20 | 武汉迈信电气技术有限公司 | 一种基于fpga的多编码器数据交互***及方法 |
CN111951722B (zh) * | 2020-08-29 | 2021-11-09 | 深圳市洲明科技股份有限公司 | 时钟信号发送器及接收器、时钟电路、接收卡和led模组 |
US11899042B2 (en) | 2020-10-22 | 2024-02-13 | Teradyne, Inc. | Automated test system |
US11754596B2 (en) | 2020-10-22 | 2023-09-12 | Teradyne, Inc. | Test site configuration in an automated test system |
US11867749B2 (en) | 2020-10-22 | 2024-01-09 | Teradyne, Inc. | Vision system for an automated test system |
US11754622B2 (en) | 2020-10-22 | 2023-09-12 | Teradyne, Inc. | Thermal control system for an automated test system |
US11953519B2 (en) | 2020-10-22 | 2024-04-09 | Teradyne, Inc. | Modular automated test system |
US12007411B2 (en) | 2021-06-22 | 2024-06-11 | Teradyne, Inc. | Test socket having an automated lid |
US20230046788A1 (en) * | 2021-08-16 | 2023-02-16 | Capital One Services, Llc | Systems and methods for resetting an authentication counter |
Family Cites Families (164)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US32574A (en) * | 1861-06-18 | Wateb-elevator | ||
CA833100A (en) | 1970-01-27 | O. Johnson Keith | Optical transducer head and system | |
US32709A (en) * | 1861-07-02 | Soda-water apparatus | ||
US32431A (en) * | 1861-05-28 | Improvement in cultivators | ||
US32051A (en) * | 1861-04-16 | Lotjghlin | ||
US2432432A (en) * | 1945-07-06 | 1947-12-09 | Eastman Kodak Co | Ortho pseudo stereo range finder |
US3310792A (en) * | 1963-05-20 | 1967-03-21 | Burroughs Corp | Magnetic head mount apparatus |
GB1168161A (en) * | 1967-01-30 | 1969-10-22 | Mullard Ltd | Improvements in or relating to Light Beam Deflector Systems |
US3518442A (en) * | 1968-06-06 | 1970-06-30 | Gauss Electrophysics Inc | Video playback assembly wherein the record disc has optical recordings on both sides |
US3530258A (en) * | 1968-06-28 | 1970-09-22 | Mca Technology Inc | Video signal transducer having servo controlled flexible fiber optic track centering |
GB1285184A (en) * | 1969-04-30 | 1972-08-09 | Vickers Ltd | Optical image-splitting systems |
DE2057827A1 (de) * | 1969-11-24 | 1971-06-03 | Vickers Ltd | Optische Anordnung zur Bildfeldebnung |
US4703467A (en) * | 1972-10-24 | 1987-10-27 | Discovision Associates | Video disc read back scanner |
US4809247A (en) | 1972-10-24 | 1989-02-28 | Discovision Associates | Video disc head tracking apparatus |
US4451913A (en) * | 1972-10-24 | 1984-05-29 | Discovision Associates | Video disc read back scanner |
US4282598A (en) * | 1972-10-24 | 1981-08-04 | Discovision Associates | Video disc read back scanner |
CA1013854A (en) | 1973-02-20 | 1977-07-12 | John S. Winslow | Videodisc mastering system |
US4225873A (en) * | 1978-03-27 | 1980-09-30 | Mca Disco-Vision, Inc. | Recording and playback system |
US4611318A (en) * | 1973-02-20 | 1986-09-09 | Discovision Associates | Method and apparatus for monitoring the storage of information on a storage medium |
US4583210A (en) * | 1973-02-20 | 1986-04-15 | Discovision Associates | Method and apparatus for storing and retrieving information |
US3997715A (en) * | 1974-03-25 | 1976-12-14 | Mca Disco-Vision, Inc. | Focusing system for videodisc player |
US3931641A (en) * | 1974-08-22 | 1976-01-06 | International Business Machines Corporation | Transducer suspension mount apparatus |
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 |
US4161753A (en) * | 1977-07-08 | 1979-07-17 | International Business Machines Corporation | Video recording disk with interlacing of data for frames on the same track |
US4232388A (en) * | 1977-11-04 | 1980-11-04 | Mca Disco-Vision, Inc. | Method and means for encoding and decoding digital data |
US4307381A (en) * | 1977-11-04 | 1981-12-22 | Discovision Associates | Method and means for encoding and decoding digital data |
US4204199A (en) * | 1977-11-04 | 1980-05-20 | Mca Disco-Vision, Inc. | Method and means for encoding and decoding digital data |
US4456914A (en) * | 1978-03-27 | 1984-06-26 | Discovision Associates | Method and apparatus for storing information on a storage medium |
US4370679A (en) * | 1978-03-27 | 1983-01-25 | Discovision Associates | Gain correction system for videodisc player apparatus |
USRE32709E (en) | 1978-03-27 | 1988-07-05 | Discovision Associates | Tracking system for video disc player |
USRE32051E (en) | 1978-03-27 | 1985-12-17 | Discovision Associates | Tracking system and method for video disc player |
US4439848A (en) * | 1978-03-27 | 1984-03-27 | Discovision Associates | Focusing system for video disc player |
US4358796A (en) * | 1978-03-27 | 1982-11-09 | Discovision Associates | Spindle servo system for videodisc player |
US4371899A (en) * | 1978-03-27 | 1983-02-01 | Discovision Associates | Time base error correction system for player |
USRE32574E (en) | 1978-06-30 | 1988-01-05 | Discovision Associates | Method and apparatus for information retrieval from an optically readable storage medium |
US4313191A (en) * | 1978-06-30 | 1982-01-26 | Discovision Associates | Recording medium having a pilot signal with an aligned phase angle in adjacent tracks |
US4375091A (en) * | 1978-06-30 | 1983-02-22 | Discovision Associates | Method and apparatus for information retrieval from an optically readable storage medium |
US4236050A (en) * | 1978-06-30 | 1980-11-25 | Mca Discovision, Inc. | System for recovering information from a movable information storage medium having a pilot signal with an aligned phase angle in adjacent tracks |
US4228326A (en) * | 1978-11-16 | 1980-10-14 | Mca Discovision Inc. | System for recording information on a rotatable storage disc, in a substantially uniform recording density |
USRE32431E (en) | 1978-11-16 | 1987-06-02 | Discovision Associates | System for rotating an information storage disc at a variable angular velocity to recover information therefrom at a prescribed constant rate |
US4190860A (en) * | 1978-11-16 | 1980-02-26 | Mca Discovision, Inc. | Digital method and apparatus for rotating an information storage disc |
US4232201A (en) * | 1978-11-24 | 1980-11-04 | Mca Discovision, Inc. | Dithered center tracking system |
US4232337A (en) * | 1978-12-13 | 1980-11-04 | Mca Discovision, Inc. | Method and apparatus for tracking an optically readable information track |
US4222072A (en) * | 1978-12-28 | 1980-09-09 | Discovision Associates | Video player/recorder with non-linear mark length modulation |
US4210931A (en) * | 1978-12-28 | 1980-07-01 | Discovision Associates | Video player and/or recorder with Hadamard transform |
BR7900180A (pt) | 1979-01-11 | 1980-09-02 | Mca Disco Vision | Aparelho e processo para leitura de informacoes registradas em uma pista de informacoes sobre uma superficie de um disco |
US4234837A (en) * | 1979-01-12 | 1980-11-18 | Mca Discovision, Inc. | Digital center tracking system |
US4236105A (en) * | 1979-01-12 | 1980-11-25 | Mca Discovision, Inc. | Digital center tracking system |
US4271334A (en) * | 1979-04-06 | 1981-06-02 | Discovision Associates | Apparatus for correcting for temperature-induced tracking errors in a system for recovering information from a recording disc |
CA1145464A (en) | 1979-08-22 | 1983-04-26 | Wayne R. Dakin | Programmed video record disc and related playback apparatus |
CA1125434A (en) | 1979-09-25 | 1982-06-08 | Discovision Associates | Mastering machine |
US5084852A (en) | 1980-07-16 | 1992-01-28 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
US5253244A (en) | 1980-07-16 | 1993-10-12 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
US5003526A (en) | 1980-07-16 | 1991-03-26 | Discovision Associates | System for recording digital information in a pulse-length modulation format |
JPS5768813A (en) * | 1980-10-17 | 1982-04-27 | Matsushita Electric Ind Co Ltd | Optical information reader |
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 |
US4592037A (en) * | 1980-11-28 | 1986-05-27 | Hitachi, Ltd. | Device for displacing a pickup head in multi-axial directions |
JPS57103131A (en) * | 1980-12-18 | 1982-06-26 | Sony Corp | Biaxial driver |
JPS57127968A (en) * | 1981-01-28 | 1982-08-09 | Hitachi Ltd | Magnetic disc storage device |
US4571716A (en) * | 1981-02-02 | 1986-02-18 | Discovision Associates | Method and apparatus for scanning a recording medium for defects |
US4406000A (en) * | 1981-03-31 | 1983-09-20 | Discovision Associates | Tracking system for optical record medium |
US4414655A (en) * | 1981-03-31 | 1983-11-08 | Discovision Associates | Scanning beam control system |
US4502783A (en) * | 1981-12-03 | 1985-03-05 | Hughes Aircraft Company | Alignment stabilization prism |
US4774699A (en) * | 1981-12-21 | 1988-09-27 | Discovision Associates | Method and apparatus for positioning a read head to a selected track on a record disc |
US4701898A (en) * | 1981-12-21 | 1987-10-20 | Discovision Associates | Method and apparatus for locating a selected track on a record disc |
US5126990A (en) | 1982-01-12 | 1992-06-30 | Discovision Associates | Method of evaluating a storage medium by recirculating a test sample of a signal |
US4746991A (en) * | 1982-01-12 | 1988-05-24 | Discovision Associates | Recording characteristic evaluation of a recording medium with a time sequence of test signals |
US4455634A (en) * | 1982-01-12 | 1984-06-19 | Discovision Associates | Audio/video quality monitoring system |
US4598324A (en) * | 1982-01-12 | 1986-07-01 | Discovision Associates | Audio evaluation under control of video picture frame number |
US4764915A (en) * | 1982-01-12 | 1988-08-16 | Discovision Associates | Method and apparatus for recording a multiplexed signal on a record medium |
US5001568A (en) | 1982-01-12 | 1991-03-19 | Discovision Associates | Signal evaluation by accumulation at one rate and releasing and testing at a slower rate |
US4524444A (en) * | 1982-01-12 | 1985-06-18 | Discovision Associates | Analyzing the signal transfer characteristics of a signal processing unit |
US4755884A (en) * | 1982-01-12 | 1988-07-05 | Discovision Associates | Audio evaluation of information stored on a record medium under control of video picture frame number |
US4682246A (en) * | 1982-01-12 | 1987-07-21 | Discovision Associates | Characterizing the information transfer characteristics of a recording medium |
US4638377A (en) * | 1982-01-25 | 1987-01-20 | Discovision Associates | Selectable video/audio coded data recovery from a record medium |
US4757393A (en) * | 1982-01-25 | 1988-07-12 | Discovision Associates | Multiple variable rate audio message playback |
US4727433A (en) * | 1982-01-25 | 1988-02-23 | Discovision Associates | Video/audio coded data recovery from a record medium |
US4703368A (en) * | 1982-01-25 | 1987-10-27 | Discovision Associates | Multiple variable rate audio message recording and playback |
US4751692A (en) * | 1982-04-15 | 1988-06-14 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4845697A (en) | 1982-04-15 | 1989-07-04 | Discovision Associates | Method of time limited searching for a track address on an optically read information disc |
US4536863A (en) * | 1982-04-15 | 1985-08-20 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4727532A (en) * | 1982-04-15 | 1988-02-23 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4706133A (en) * | 1982-04-15 | 1987-11-10 | Discovision Associates | Method and apparatus for recovering information from a videodisc |
US4568142A (en) * | 1982-04-26 | 1986-02-04 | Hitachi, Ltd. | Objective lens drive apparatus |
US4465977A (en) * | 1982-06-04 | 1984-08-14 | Discovision Associates | Erroneous pulse sequence detector |
US4499569A (en) * | 1982-09-07 | 1985-02-12 | Discovision Associates | Writing beam focus monitor |
NL8204023A (nl) * | 1982-10-19 | 1984-05-16 | Philips Nv | Inrichting voor het optisch uitlezen en/of inschrijven van informatie. |
US4805162A (en) | 1982-11-01 | 1989-02-14 | Storage Technology Partners Ii | Fine and coarse servo system for access and tracking on an optical disk |
JPS59104735A (ja) * | 1982-12-08 | 1984-06-16 | Sony Corp | 対物レンズ駆動装置 |
JPS59104733A (ja) * | 1982-12-08 | 1984-06-16 | Pioneer Electronic Corp | 光学式情報読取装置における光学系駆動装置 |
US4504935A (en) * | 1983-02-14 | 1985-03-12 | U.S. Philips Corporation | Electrodynamic focus and radial slide drive for an optical disc system |
US4497534A (en) * | 1983-02-28 | 1985-02-05 | International Business Machines Corporation | Holographic optical head |
US4603363A (en) * | 1983-03-01 | 1986-07-29 | Storage Technology Partners Ii | Stop mechanism using an elastomeric element |
JPH0782655B2 (ja) * | 1983-04-28 | 1995-09-06 | オリンパス光学工業株式会社 | 光ヘッド |
US4720088A (en) * | 1983-05-18 | 1988-01-19 | Canon Kabushiki Kaisha | Optical system supporting device |
WO1984004841A1 (en) * | 1983-05-31 | 1984-12-06 | Matsushita Electric Ind Co Ltd | Apparatus for driving objective lens of optical disc player |
US4596444A (en) * | 1983-07-05 | 1986-06-24 | Alps Electric Co., Ltd. | Double cantilever support construction for optical systems |
CA1249744A (en) * | 1983-08-03 | 1989-02-07 | Mitsuru Takashima | Optical pickup having a driving unit |
US4562577A (en) * | 1983-09-19 | 1985-12-31 | Storage Technology Partners Ii | Shared encoder/decoder circuits for use with error correction codes of an optical disk system |
US4633471A (en) * | 1983-09-19 | 1986-12-30 | Storage Technology Partners Ii | Error detection and correction in an optical storage system |
US4697167A (en) * | 1983-09-19 | 1987-09-29 | Storage Technology Corporation | Sync pattern encoding system for data sectors written on a storage medium |
US4791622A (en) * | 1983-09-19 | 1988-12-13 | Storage Technology Partners 11 | Optical data format employing resynchronizable data sectors |
DE3573853D1 (en) * | 1984-01-31 | 1989-11-23 | Matsushita Electric Ind Co Ltd | Pick-up arm for an optical disk player |
US4696566A (en) * | 1984-02-08 | 1987-09-29 | Sharp Kabushiki Kaisha | Three-dimensional driving arrangement |
JPH064415Y2 (ja) * | 1984-04-23 | 1994-02-02 | パイオニア株式会社 | レンズ駆動装置 |
JPS60239939A (ja) * | 1984-05-14 | 1985-11-28 | Hitachi Ltd | 対物レンズ駆動装置 |
US4627038A (en) * | 1984-07-05 | 1986-12-02 | Storage Technology Partners Ii | Optical disk storage unit having a servo system with different velocity inputs |
US4740941A (en) * | 1984-07-06 | 1988-04-26 | Storage Technology Partners 11 | System for aligning sector marks with data in a disk storage system |
US4694447A (en) * | 1984-07-12 | 1987-09-15 | International Business Machines Corp. | Optical signal recorders employing two lasers and methods therefor |
US4688204A (en) * | 1984-11-16 | 1987-08-18 | Storage Technology Partners Ii | Pulsed optical data detection system |
CA1256520A (en) * | 1985-02-08 | 1989-06-27 | Tetsu Yamamoto | Data converter pickup carriage assembly |
JPS61208641A (ja) * | 1985-03-13 | 1986-09-17 | Olympus Optical Co Ltd | 光学的情報記録再生装置 |
US4623837A (en) * | 1985-06-14 | 1986-11-18 | Discovision Associates | Audio/video quality monitoring system |
US4829395A (en) | 1985-09-06 | 1989-05-09 | Warren Coon | Load beam/assembly |
US4680676A (en) * | 1986-01-06 | 1987-07-14 | Motorola, Inc. | Portable radio housing with logic and RF shielding |
US5004901A (en) | 1987-06-04 | 1991-04-02 | Mitsubishi Denki Kabushiki Kaisha | Current mirror amplifier for use in an optical data medium driving apparatus and servo-circuit |
KR900007175B1 (ko) * | 1986-01-20 | 1990-09-29 | 가부시기가이샤 히다찌세이사꾸쇼 | 헤드 슬라이더 지지장치 |
US4823336A (en) | 1986-02-14 | 1989-04-18 | Ricoh Company, Limited | Optical disk drive |
KR900006183B1 (ko) | 1986-03-04 | 1990-08-25 | 상요 덴기 가부시기가이샤 | 광학식 픽업 장치 |
US4845699A (en) | 1986-03-04 | 1989-07-04 | Sanyo Electric Co., Ltd. | Electric mechanical transducer and optical type pickup apparatus driven by a magnetic field |
US4842392A (en) | 1986-05-26 | 1989-06-27 | Matsushita Electric Industrial Co., Ltd. | Objective lens driving unit |
JPS62285377A (ja) * | 1986-06-04 | 1987-12-11 | ヒロセ電機株式会社 | シ−ルド型電気コネクタ及びその結線方法 |
US4797763A (en) | 1986-08-13 | 1989-01-10 | Micropolis Corporation | Compact magnetic head flexible suspension |
US4763314A (en) * | 1986-08-13 | 1988-08-09 | Optimem | Linear actuator for an optical disk storage apparatus |
JP2515479Y2 (ja) * | 1986-10-03 | 1996-10-30 | アルプス電気株式会社 | 浮動式磁気ヘツド装置 |
EP0267749B1 (en) | 1986-11-12 | 1994-01-26 | Seiko Epson Corporation | Magnetic head supporting apparatus |
EP0273071B1 (en) | 1986-12-30 | 1991-08-28 | Ibm Deutschland Gmbh | Rotary access arm for optical disks |
US4853811A (en) | 1987-08-03 | 1989-08-01 | International Business Machines Corporation | Magnetic disk drive with low profile head-suspension system |
US4942563A (en) | 1987-09-30 | 1990-07-17 | Kabushiki Kaisha Toshiba | Signal processing apparatus and method capable of providing precise digital data |
JPH0731436Y2 (ja) * | 1987-12-01 | 1995-07-19 | ティアツク株式会社 | 光学式ピックアップ装置 |
US4868694A (en) | 1987-12-11 | 1989-09-19 | Magnetic Peripherals Inc. | Flexure for rotary actuated arm |
US4912583A (en) | 1988-03-23 | 1990-03-27 | Digital Equipment Corporation | Clamp for mounting head-load beam slider arm in a disk drive |
JPH01284816A (ja) | 1988-05-12 | 1989-11-16 | Olympus Optical Co Ltd | 光ピックアップ用対物レンズ |
JP2536436Y2 (ja) | 1988-05-25 | 1997-05-21 | シャープ株式会社 | 対物レンズ駆動装置 |
JPH0266739A (ja) | 1988-09-01 | 1990-03-06 | Pioneer Electron Corp | 光学式ビックアップ装置 |
JPH0294126A (ja) | 1988-09-30 | 1990-04-04 | Matsushita Electric Ind Co Ltd | 対物レンズ駆動装置 |
JPH075545Y2 (ja) * | 1989-01-18 | 1995-02-08 | ティアツク株式会社 | 光学ヘッド |
US5319624A (en) | 1989-06-13 | 1994-06-07 | Kabushiki Kaisha Toshiba | Electromagnetic actuator and optical disk apparatus incorporating the same |
US5136558A (en) | 1989-06-20 | 1992-08-04 | Applied Magnetics Corporation | Two axis electromagnetic actuator |
JPH0323523A (ja) | 1989-06-21 | 1991-01-31 | Sony Corp | 光学ヘッド装置 |
US5150343A (en) | 1989-07-19 | 1992-09-22 | Matsushita Electric Industrial Co., Ltd. | Miniaturized low-power-consumption optical head provided with a state transformation mechanism |
US5025335B1 (en) | 1989-07-31 | 1995-12-26 | Conner Peripherals Inc | Architecture for 2 1/2 inch diameter single disk drive |
JPH03227585A (ja) * | 1989-10-30 | 1991-10-08 | Minolta Camera Co Ltd | レ−ザ光源ユニット |
US5191570A (en) | 1989-11-07 | 1993-03-02 | Asahi Kogaku Kogyo Kabushiki Kaisha | Optical head locating mechanism for magnetically locating an optical head |
US4998011A (en) | 1989-11-17 | 1991-03-05 | Applied Magnetics Corporation | Flat plate focus sensing apparatus |
JPH03203032A (ja) | 1989-12-28 | 1991-09-04 | Toshiba Corp | 光学系移動装置 |
US5138605A (en) | 1990-10-05 | 1992-08-11 | Eastman Kodak Company | Low-profile radial access mechanism for disk recording/playback apparatus, with optical head mounted on a carriage |
US5245174A (en) | 1990-10-15 | 1993-09-14 | Applied Magnetics Corporation | Focus sensing apparatus utilizing a reflecting surface having variable reflectivity |
GB2248989B (en) | 1990-10-15 | 1995-05-24 | Applied Magnetics Corp | Focus sensing apparatus and method |
US5268800A (en) | 1990-11-13 | 1993-12-07 | Areal Technology | Disk drive servosystem using gray code |
US5313332A (en) | 1990-11-16 | 1994-05-17 | Applied Magnetics Corporation | Flexure suspension for two axis actuator |
DE4102019C1 (da) * | 1991-01-24 | 1992-07-09 | Schroff Gmbh, 7541 Straubenhardt, De | |
US5331622A (en) | 1991-05-28 | 1994-07-19 | Applied Magnetics Corporation | Compact optical head |
US5155633A (en) | 1991-07-30 | 1992-10-13 | Applied Magnetics Corporation | Anamorphic achromatic prism for optical disk heads |
US5177640A (en) | 1991-10-08 | 1993-01-05 | Applied Magnetics Corporation | Two-axis moving coil actuator |
US5291110A (en) | 1991-10-31 | 1994-03-01 | Integral Peripherals, Inc. | Low acoustic noise seeking method and apparatus |
US5270887A (en) | 1991-12-04 | 1993-12-14 | Western Digital Corporation | Compact disk drive head disk assembly with conformable tape seal |
EP0577197B1 (en) * | 1992-07-01 | 1997-10-22 | Koninklijke Philips Electronics N.V. | Optoelectronic device and method of manufacturing same |
DE69326213T2 (de) * | 1992-11-17 | 1999-12-30 | Seiko Epson Corp., Tokio/Tokyo | Optischer Abtastkopf |
JP3104773B2 (ja) * | 1992-12-08 | 2000-10-30 | ソニー株式会社 | 無線受信機能付き記録再生装置 |
WO1994015331A1 (en) | 1992-12-18 | 1994-07-07 | Lockhart Wayne C | Portable low profile information storage system |
KR960013486B1 (ko) | 1992-12-23 | 1996-10-05 | 현대전자산업 주식회사 | 광헤드 장치 및 이를 이용한 위치설정 시간 측정방법 |
US5459624A (en) | 1993-10-26 | 1995-10-17 | International Business Machines Corporation | Activator control method and apparatus for positioning a transducer using a phase plane trajectory trough function for a direct access storage device with estimated velocity and position states |
-
1995
- 1995-04-11 US US08/420,381 patent/US5920539A/en not_active Expired - Lifetime
-
1996
- 1996-02-29 AU AU45791/96A patent/AU722275B2/en not_active Ceased
- 1996-03-04 CA CA002170971A patent/CA2170971A1/en not_active Abandoned
- 1996-03-08 JP JP8127995A patent/JPH08330776A/ja active Pending
- 1996-03-12 DK DK028996A patent/DK28996A/da not_active Application Discontinuation
- 1996-03-13 BR BR9601011-8A patent/BR9601011A/pt active Search and Examination
- 1996-03-18 NO NO961097A patent/NO961097L/no not_active Application Discontinuation
- 1996-03-21 EP EP96301967A patent/EP0741508A3/en not_active Withdrawn
- 1996-03-26 CN CN96103961A patent/CN1142662A/zh active Pending
- 1996-03-30 KR KR1019960009595A patent/KR100278941B1/ko not_active IP Right Cessation
- 1996-03-31 IL IL11774096A patent/IL117740A0/xx unknown
Also Published As
Publication number | Publication date |
---|---|
KR960038780A (ko) | 1996-11-21 |
EP0741508A2 (en) | 1996-11-06 |
CA2170971A1 (en) | 1996-10-12 |
JPH08330776A (ja) | 1996-12-13 |
AU4579196A (en) | 1996-10-24 |
EP0741508A3 (en) | 1998-10-28 |
AU722275B2 (en) | 2000-07-27 |
KR100278941B1 (ko) | 2001-02-01 |
BR9601011A (pt) | 2002-12-24 |
CN1142662A (zh) | 1997-02-12 |
US5920539A (en) | 1999-07-06 |
NO961097D0 (no) | 1996-03-18 |
IL117740A0 (en) | 1996-07-23 |
NO961097L (no) | 1996-10-14 |
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Legal Events
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AHB | Application shelved due to non-payment |