DE69224470D1 - Verfahren und Gerät zur Erzeugung von Servomarken - Google Patents
Verfahren und Gerät zur Erzeugung von ServomarkenInfo
- Publication number
- DE69224470D1 DE69224470D1 DE69224470T DE69224470T DE69224470D1 DE 69224470 D1 DE69224470 D1 DE 69224470D1 DE 69224470 T DE69224470 T DE 69224470T DE 69224470 T DE69224470 T DE 69224470T DE 69224470 D1 DE69224470 D1 DE 69224470D1
- Authority
- DE
- Germany
- Prior art keywords
- servo marks
- generating servo
- generating
- marks
- servo
- Prior art date
- 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.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
- G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
- G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
- G11B27/30—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording
- G11B27/3027—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on the same track as the main recording used signal is digitally coded
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/825,387 US5293276A (en) | 1992-01-24 | 1992-01-24 | Method for generating a reference signal from unique servo mark pattern detection |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69224470D1 true DE69224470D1 (de) | 1998-03-26 |
DE69224470T2 DE69224470T2 (de) | 1998-06-10 |
Family
ID=25243888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69224470T Expired - Fee Related DE69224470T2 (de) | 1992-01-24 | 1992-11-06 | Verfahren und Gerät zur Erzeugung von Servomarken |
Country Status (4)
Country | Link |
---|---|
US (1) | US5293276A (de) |
EP (1) | EP0553409B1 (de) |
JP (1) | JP2662491B2 (de) |
DE (1) | DE69224470T2 (de) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69321066T2 (de) * | 1992-10-14 | 1999-03-18 | Sony Corp., Tokio/Tokyo | Magnetplattengerät |
JPH06150565A (ja) * | 1992-10-30 | 1994-05-31 | Sony Corp | データ記録媒体および記録再生装置 |
JP3431030B2 (ja) * | 1992-11-12 | 2003-07-28 | ソニー株式会社 | 再生装置および再生方法 |
TW223171B (en) * | 1993-01-06 | 1994-05-01 | Sony Co Ltd | Playback method and device |
US5668678B1 (en) * | 1994-11-14 | 2000-11-28 | Cirrus Logic Inc | Detecting servo data and servo bursts from discrete time samples of an analog read signal in a sampled amplitude read channel |
JP2974200B2 (ja) * | 1995-07-26 | 1999-11-08 | インターナショナル・ビジネス・マシーンズ・コーポレイション | デイスク装置におけるサーボ情報識別方法 |
KR100241748B1 (ko) * | 1995-12-29 | 2000-02-01 | 윤종용 | 서보 버스트 신호의 미세 디펙 검출을 위한 서보패턴 기록방법 및 구동회로 |
JP2891216B2 (ja) * | 1996-12-27 | 1999-05-17 | 日本電気株式会社 | サーボマーク検出回路 |
JP3670440B2 (ja) * | 1997-05-20 | 2005-07-13 | 富士通株式会社 | ディスク上の位置検出方法及びディスク装置並びにディスク |
JP3824737B2 (ja) | 1997-05-20 | 2006-09-20 | 富士通株式会社 | サーボ信号処理装置 |
WO1999006992A1 (en) * | 1997-07-31 | 1999-02-11 | Seagate Technology, Inc. | Method and apparatus for increasing the sample rate of a disc drive with low overhead |
US6181500B1 (en) | 1998-04-17 | 2001-01-30 | International Business Machines Corporation | Self servo rewrite method and apparatus |
JP4157254B2 (ja) * | 2000-06-14 | 2008-10-01 | シャープ株式会社 | 情報記録再生装置およびそのトラッキングサーボ方法 |
US6906883B2 (en) * | 2000-09-14 | 2005-06-14 | Samsung Electronics Ltd., Co. | Servo defect management scheme in hard disk drives |
KR100468764B1 (ko) * | 2001-09-13 | 2005-01-29 | 삼성전자주식회사 | 디스크 위의 위치 정보를 제공하는 방법 및 장치 |
US6934104B1 (en) | 2004-05-28 | 2005-08-23 | Western Digital Technologies, Inc. | Servo synchronization based on a servo synch mark that conflicts with self-clocking encoding algorithms |
US8023392B2 (en) * | 2006-12-15 | 2011-09-20 | Seagate Technology Llc | Compensating the effects of non-synchronous writing of erasable servo marks |
US20090086360A1 (en) * | 2007-10-02 | 2009-04-02 | Seagate Technology Llc | Low Complexity Servo Demodulation Algorithm for Probe Storage |
JP4858919B2 (ja) * | 2008-05-09 | 2012-01-18 | 東芝ストレージデバイス株式会社 | 記憶装置、記憶装置の制御回路およびサーボライト方式識別方法 |
US8049982B1 (en) * | 2010-07-30 | 2011-11-01 | Lsi Corporation | Methods and apparatus for measuring servo address mark distance in a read channel using selective fine phase estimate |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3631421A (en) * | 1968-09-23 | 1971-12-28 | Burroughs Corp | Data storage addressing system |
US3986208A (en) * | 1974-10-21 | 1976-10-12 | Sykes Datatronics, Inc. | Data recording with high speed search capability |
US4345280A (en) * | 1980-09-04 | 1982-08-17 | Storage Technology Corporation | Address mark detection circuit |
US4367497A (en) * | 1981-01-02 | 1983-01-04 | Sperry Corporation | Digital data formatting system for high density magnetic recording |
JPS57176581A (en) * | 1981-04-20 | 1982-10-29 | Hitachi Ltd | Control mechanism for magnetic storage device |
US4424543A (en) * | 1981-11-16 | 1984-01-03 | Dma Systems Corporation | Method and apparatus for recording transducer positioning information |
US4495533A (en) * | 1982-06-28 | 1985-01-22 | Atasi Corporation | Disk memory indexing system |
CA1234914A (en) * | 1983-09-19 | 1988-04-05 | George L. Noyes | Sync pattern encoding system for data sectors written on a storage medium |
JPS6113476A (ja) * | 1984-06-28 | 1986-01-21 | Nippon Telegr & Teleph Corp <Ntt> | カセツト式磁気テ−プ装置の同期制御方式 |
JPS61144776A (ja) * | 1984-12-17 | 1986-07-02 | Ricoh Co Ltd | デ−タ記録方式 |
US4746997A (en) * | 1986-02-10 | 1988-05-24 | Miniscribe Corporation | Method and apparatus for generating/detecting and address mark |
JPS62202361A (ja) * | 1986-02-28 | 1987-09-07 | Sharp Corp | 同期情報の検出装置 |
US4825310A (en) * | 1986-10-14 | 1989-04-25 | Konishiroku Photo Industries Co., Ltd. | Method and apparatus for recording servo synchronization information |
JPS6423463A (en) * | 1987-07-20 | 1989-01-26 | Tokico Ltd | Magnetic disk device |
US5036408A (en) * | 1988-05-12 | 1991-07-30 | Digital Equipment Corporation | High efficiency disk format and synchronization system |
DE3923165A1 (de) * | 1988-07-15 | 1990-01-18 | Hitachi Ltd | Magnetplattenvorrichtung |
US4933786A (en) * | 1988-09-21 | 1990-06-12 | Maxtor Corporation | Fault tolerant index patterns and decoding means |
-
1992
- 1992-01-24 US US07/825,387 patent/US5293276A/en not_active Expired - Lifetime
- 1992-11-06 EP EP92119035A patent/EP0553409B1/de not_active Expired - Lifetime
- 1992-11-06 DE DE69224470T patent/DE69224470T2/de not_active Expired - Fee Related
-
1993
- 1993-01-21 JP JP5008471A patent/JP2662491B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69224470T2 (de) | 1998-06-10 |
US5293276A (en) | 1994-03-08 |
EP0553409B1 (de) | 1998-02-18 |
JPH0644690A (ja) | 1994-02-18 |
EP0553409A2 (de) | 1993-08-04 |
JP2662491B2 (ja) | 1997-10-15 |
EP0553409A3 (en) | 1993-10-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE68928438D1 (de) | Verfahren und Vorrichtung zur Erzeugung von beweglichen Bildern | |
DE69224470D1 (de) | Verfahren und Gerät zur Erzeugung von Servomarken | |
DE69410408D1 (de) | Vorrichtung und Verfahren zur Erzeugung von Aerosols | |
DE68927037D1 (de) | Verfahren und Vorrichtung zur Erzeugung von Plasma | |
DE69127650D1 (de) | Verfahren und Gerät zur Erzeugung von dreidimensionalen graphischen Symbolen | |
DE69427210D1 (de) | Verfahren und Gerät zur Erzeugung von dreidimensionaler Animation | |
DE69323621D1 (de) | Vorrichtung und verfahren zur gewinnung von leukocytfreiem trombozytkonzentrat | |
DE69034140D1 (de) | Verfahren und Einrichtung zur Erzeugung von Mustern | |
DE69735866D1 (de) | Vorrichtung und Verfahren zur Erzeugung von voraussagbaren Antworten | |
DE69127048D1 (de) | Verfahren und Vorrichtung zur Editierung von MIDI-Dateien | |
DE69421963D1 (de) | Nachbearbeitungsverfahren und Vorrichtung zur Erzeugung von Zuverlässigkeitsymbolen | |
DE69328640D1 (de) | Verfahren und Einrichtung zur Mustererkennung | |
DE69307142D1 (de) | Vorrichtung und Verfahren zur Geschwindigkeitskontrolle | |
DE69425037D1 (de) | Verfahren und Vorrichtung zur Generierung von Schriftzeichen | |
DE69232227D1 (de) | Verfahren zur Erzeugung von freigebogenen Linien und modellierten Flächen | |
DE69329276D1 (de) | Verfahren zur erzeugung homogener reagenzien | |
DE69319525D1 (de) | Verfahren und Vorrichtung zur Erzeugung eines überlappenden Bildgebietes | |
DE69109213D1 (de) | Verfahren und Vorrichtung zur Erzeugung von Röntgenstrahlen. | |
DE69409418D1 (de) | Vorrichtung und Verfahren zur Ableitung von Polynomialmengen | |
DE69031179D1 (de) | Verfahren und Gerät zur Erzeugung von mehrfarbigen Bildern | |
DE69329354D1 (de) | Verfahren und Gerät zur Mustererkennung | |
DE68928877D1 (de) | Verfahren und Vorrichtung zur Erzeugung von Ausschneide-Maskendaten | |
DE69636215D1 (de) | Verfahren und vorrichtung zur erzeugung von graviersignalen | |
DE69318514D1 (de) | Verfahren und Vorrichtung zur Herstellung von Registermarkenmustern | |
DE69432507D1 (de) | Verfahren und Geräte zur Erzeugung von Zeichnungsdaten |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |