BR7907411A - Aparelho e processo para girar um disco de armazenamento de informacao em relacao a um transdutor e aparelho para registrar informacao sobre um disco de informacao - Google Patents
Aparelho e processo para girar um disco de armazenamento de informacao em relacao a um transdutor e aparelho para registrar informacao sobre um disco de informacaoInfo
- Publication number
- BR7907411A BR7907411A BR7907411A BR7907411A BR7907411A BR 7907411 A BR7907411 A BR 7907411A BR 7907411 A BR7907411 A BR 7907411A BR 7907411 A BR7907411 A BR 7907411A BR 7907411 A BR7907411 A BR 7907411A
- Authority
- BR
- Brazil
- Prior art keywords
- information
- disc
- velocity signal
- appliance
- radius
- Prior art date
Links
- 239000013078 crystal Substances 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
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
- G11B19/24—Arrangements for providing constant relative speed between record carrier and head
Landscapes
- Rotational Drive Of Disk (AREA)
- Control Of Velocity Or Acceleration (AREA)
- Control Of Electric Motors In General (AREA)
- Management Or Editing Of Information On Record Carriers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/961,362 US4190860A (en) | 1978-11-16 | 1978-11-16 | Digital method and apparatus for rotating an information storage disc |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7907411A true BR7907411A (pt) | 1980-07-22 |
Family
ID=25504381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7907411A BR7907411A (pt) | 1978-11-16 | 1979-11-14 | Aparelho e processo para girar um disco de armazenamento de informacao em relacao a um transdutor e aparelho para registrar informacao sobre um disco de informacao |
Country Status (10)
Country | Link |
---|---|
US (1) | US4190860A (pt) |
EP (1) | EP0011493B1 (pt) |
JP (1) | JPS55135368A (pt) |
AT (1) | ATE6447T1 (pt) |
AU (1) | AU532548B2 (pt) |
BR (1) | BR7907411A (pt) |
CA (1) | CA1124395A (pt) |
DE (1) | DE2966730D1 (pt) |
HK (1) | HK49386A (pt) |
MY (1) | MY8700024A (pt) |
Families Citing this family (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55109184A (en) * | 1979-02-13 | 1980-08-22 | Victor Co Of Japan Ltd | Rotational speed control system |
GB2046979B (en) * | 1979-04-17 | 1983-05-18 | Burroughs Corp | Recording and replay apparatus employing rotary media |
JPS5625264A (en) * | 1979-08-06 | 1981-03-11 | Victor Co Of Japan Ltd | Rotation contrl system for driving motor of recorder for equal line speed information recording medium disk |
US4296446A (en) * | 1979-11-15 | 1981-10-20 | Rca Corporation | Motor speed control circuit |
JPS5687239A (en) * | 1979-12-18 | 1981-07-15 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing device |
US4388713A (en) * | 1979-12-27 | 1983-06-14 | Victor Company Of Japan, Ltd. | Rotation control system in a rotary recording medium reproducing apparatus |
NL8003305A (nl) * | 1980-06-06 | 1982-01-04 | Philips Nv | Inrichting voor het opzoeken van een gewenst informa- tiespoor. |
JPS615624Y2 (pt) * | 1980-09-30 | 1986-02-20 | ||
DE3140432C2 (de) * | 1980-10-13 | 1985-10-10 | Hitachi, Ltd., Tokio/Tokyo | Drehzahlregelschaltung |
JPS5787371U (pt) * | 1980-11-17 | 1982-05-29 | ||
JPS5888874A (ja) * | 1981-11-20 | 1983-05-27 | Toshiba Corp | 情報記録再生装置 |
JPS58175109A (ja) * | 1982-04-07 | 1983-10-14 | Pioneer Video Kk | 円盤状記録媒体の記録方式 |
EP0096164B1 (en) * | 1982-06-15 | 1987-08-26 | Kabushiki Kaisha Toshiba | Pulse-width modulation circuit |
JPS5956262A (ja) * | 1982-09-27 | 1984-03-31 | Toshiba Corp | デイスク装置 |
US4514771A (en) * | 1982-10-13 | 1985-04-30 | Victor Technologies Inc. | Method and apparatus for improving disk storage capacity |
JPS5990262A (ja) * | 1982-11-15 | 1984-05-24 | Nippon Gakki Seizo Kk | デイスクの再生装置 |
JPS609057U (ja) * | 1983-03-31 | 1985-01-22 | 横河・ヒユ−レツト・パツカ−ド株式会社 | デイスク駆動装置 |
JPS59185071A (ja) * | 1983-04-04 | 1984-10-20 | Hitachi Ltd | 情報記録デイスクの再生速度制御装置 |
JPH0812743B2 (ja) * | 1983-06-30 | 1996-02-07 | 株式会社東芝 | ディスク装置 |
JPS6070563A (ja) * | 1983-09-27 | 1985-04-22 | Toshiba Corp | 高密度螺旋描画装置 |
JPS60195771A (ja) * | 1984-03-16 | 1985-10-04 | Pioneer Electronic Corp | 記録ディスク回転駆動制御装置 |
US4566224A (en) * | 1984-10-24 | 1986-01-28 | Rca Corporation | Lapping apparatus |
JPS61236382A (ja) * | 1985-04-09 | 1986-10-21 | Citizen Watch Co Ltd | 直流サ−ボモ−タの制御回路 |
US4691310A (en) * | 1985-08-09 | 1987-09-01 | Rca Corporation | Compact disk read only memory recording system with speed control |
JPS6254868A (ja) * | 1985-09-03 | 1987-03-10 | Victor Co Of Japan Ltd | 回転記録媒体の回転数制御装置 |
US4799112A (en) * | 1987-02-19 | 1989-01-17 | Magnetic Peripherals Inc. | Method and apparatus for recording data |
NL8701448A (nl) * | 1987-06-22 | 1989-01-16 | Philips Nv | Werkwijze en inrichting voor het met een stralingsbundel aftasten van een roterende registratiedrager. |
US4839877A (en) * | 1987-10-02 | 1989-06-13 | International Business Machines Corporation | Rotational position controls for optical disk players using removable disks |
BR8807909A (pt) * | 1988-06-29 | 1991-04-02 | Larry D Goddard | Aparelhagem para armazenagem e recuperacao de imagens |
US5265079A (en) | 1991-02-15 | 1993-11-23 | Applied Magnetics Corporation | Seek actuator for optical recording |
US6141300A (en) * | 1989-06-20 | 2000-10-31 | Discovision Associates | Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same |
US5182741A (en) * | 1989-08-25 | 1993-01-26 | Sharp Kabushiki Kaisha | Optical disk recording/reproducing device utilizing a constant angular velocity method with a constant linear velocity formatted optical disk |
US6236625B1 (en) | 1991-02-15 | 2001-05-22 | Discovision Associates | Optical disc system having current monitoring circuit with controller for laser driver and method for operating same |
US6069857A (en) * | 1991-02-15 | 2000-05-30 | Discovision Associates | Optical disc system having improved circuitry for performing blank sector check on readable disc |
US5729511A (en) * | 1991-02-15 | 1998-03-17 | Discovision Associates | Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal |
US5677899A (en) | 1991-02-15 | 1997-10-14 | Discovision Associates | Method for moving carriage assembly from initial position to target position relative to storage medium |
US5808980A (en) * | 1991-02-15 | 1998-09-15 | Discovision Associates | Seek actuator for optical recording |
US5537379A (en) * | 1991-05-10 | 1996-07-16 | Discovision Associates | Optical data storage and retrieval system and method |
US5258876A (en) * | 1991-09-16 | 1993-11-02 | Seagate Technology, Inc. | Zone bit recording with write compensation |
JP2583193B2 (ja) | 1991-12-23 | 1997-02-19 | ニンブス・コミュニケーションズ・インターナショナル・リミテッド | ディスク記録システム、およびそのようなディスク記録システムにおいてターンテーブルの回転を制御する方法 |
US5894468A (en) * | 1994-05-06 | 1999-04-13 | Discovision Associates | Data recovery with differentiation and partial integration stages to eliminate noises and DC offset level |
US5790495A (en) | 1994-05-06 | 1998-08-04 | Discovision Associates | Data generator assembly for retrieving stored data by comparing threshold signal with preprocessed signal having DC component |
BE1008963A3 (nl) * | 1994-11-18 | 1996-10-01 | Philips Electronics Nv | Schijfvormige registratiedrager, alsmede opteken- en/of uitleesinrichting voor optekening/uitlezing van informatie op/van de registratiedrager. |
US5590102A (en) * | 1995-01-12 | 1996-12-31 | Discovision Associates | Recording informatioin on an optical disc without using pre-manufactured tracks |
US6434087B1 (en) | 1995-01-25 | 2002-08-13 | Discovision Associates | Optical disc system and method for controlling bias coil and light source to process information on a storage medium |
US5748578A (en) * | 1995-01-25 | 1998-05-05 | Discovision Associates | Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same |
US5920539A (en) * | 1995-01-25 | 1999-07-06 | Discovision Associates | Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor |
US6091684A (en) * | 1995-01-25 | 2000-07-18 | Discovision Associates | Optical disc system and method for changing the rotational rate of an information storage medium |
US5978329A (en) * | 1995-06-07 | 1999-11-02 | Discovision Associates | Technique for closed loop servo operation in optical disc tracking control |
CN1077715C (zh) * | 1995-12-06 | 2002-01-09 | 迪维安公司 | 聚焦控制的装置和方法 |
US5689485A (en) * | 1996-04-01 | 1997-11-18 | Discovision Associates | Tracking control apparatus and method |
US5808990A (en) * | 1996-12-17 | 1998-09-15 | Cinram, Inc. | Method and apparatus for controlling the linear velocity between an optical head and a rotation disk |
US8077569B2 (en) * | 2008-05-05 | 2011-12-13 | Mediatek Inc. | Methods and devices for controlling access to an optical disc |
US9025273B1 (en) * | 2013-08-28 | 2015-05-05 | Western Digital Technologies, Inc. | Disk drive employing digital accumulators to limit velocity and/or acceleration of microactuator |
GB2585328B (en) * | 2018-12-14 | 2021-07-21 | Darkvision Tech Inc | Correcting for eccentricity of acoustic sensors in wells and pipes |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2113226A (en) * | 1935-05-08 | 1938-04-05 | Rca Corp | Sound recording and reproducing system |
US2901737A (en) * | 1955-11-01 | 1959-08-25 | Sperry Rand Corp | Disk recording compensating devices |
DE1562038B2 (de) * | 1968-02-13 | 1971-05-13 | Telefunken Patentverwertungsgesell schaft mbH, 790OUIm | System zur aufzeichnung und abtastung von bildsignalen und der bildwechselfrequenz entsprechenden impulsen unter ver wendung eines plattenfoermigen aufzeichnungstraegers |
JPS5147528B2 (pt) * | 1972-05-20 | 1976-12-15 | ||
DE2257817A1 (de) * | 1972-11-25 | 1974-05-30 | Hubertus Wentzell | Aufzeichnungs- und wiedergabeverfahren fuer platten-informationstraeger |
US3826965A (en) * | 1972-11-29 | 1974-07-30 | Ibm | Constant tangential velocity motor control for a disc recording system |
JPS5841710B2 (ja) * | 1973-03-16 | 1983-09-13 | ソニー株式会社 | ジヨウホウシンゴウキロクホウホウ |
US4118734A (en) * | 1974-02-14 | 1978-10-03 | U.S. Philips Corporation | Optical videodisc with variable width tracks |
DE2521821A1 (de) * | 1975-05-16 | 1976-11-25 | Bosch Gmbh Robert | Videoplattengeraet |
NL7612070A (nl) * | 1975-10-31 | 1977-05-03 | Hitachi Ltd | Inrichting voor het uitlezen van informatie. |
JPS5363002A (en) * | 1976-11-18 | 1978-06-06 | Sony Corp | Signal recording system and disk type medium for recording signal |
DE2811761A1 (de) * | 1978-03-17 | 1979-09-20 | Wilhelm Dr Ing Lepper | Verfahren zur aufnahme und wiedergabe von schallaufzeichnungen fuer schallplatten und einrichtung zur durchfuehrung des verfahrens |
-
1978
- 1978-11-16 US US05/961,362 patent/US4190860A/en not_active Expired - Lifetime
-
1979
- 1979-11-14 BR BR7907411A patent/BR7907411A/pt not_active IP Right Cessation
- 1979-11-15 EP EP79302592A patent/EP0011493B1/en not_active Expired
- 1979-11-15 CA CA339,959A patent/CA1124395A/en not_active Expired
- 1979-11-15 DE DE7979302592T patent/DE2966730D1/de not_active Expired
- 1979-11-15 AT AT79302592T patent/ATE6447T1/de not_active IP Right Cessation
- 1979-11-15 AU AU52846/79A patent/AU532548B2/en not_active Expired
- 1979-11-16 JP JP14782179A patent/JPS55135368A/ja active Granted
-
1986
- 1986-07-03 HK HK493/86A patent/HK49386A/xx not_active IP Right Cessation
-
1987
- 1987-12-30 MY MY24/87A patent/MY8700024A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
JPH0152826B2 (pt) | 1989-11-10 |
EP0011493A1 (en) | 1980-05-28 |
EP0011493B1 (en) | 1984-02-29 |
AU5284679A (en) | 1980-05-22 |
CA1124395A (en) | 1982-05-25 |
MY8700024A (en) | 1987-12-31 |
US4190860A (en) | 1980-02-26 |
DE2966730D1 (en) | 1984-04-05 |
ATE6447T1 (de) | 1984-03-15 |
AU532548B2 (en) | 1983-10-06 |
JPS55135368A (en) | 1980-10-22 |
HK49386A (en) | 1986-07-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK | Patent expired |
Effective date: 19941114 |