DE68915842D1 - Servoadresssystem. - Google Patents
Servoadresssystem.Info
- Publication number
- DE68915842D1 DE68915842D1 DE68915842T DE68915842T DE68915842D1 DE 68915842 D1 DE68915842 D1 DE 68915842D1 DE 68915842 T DE68915842 T DE 68915842T DE 68915842 T DE68915842 T DE 68915842T DE 68915842 D1 DE68915842 D1 DE 68915842D1
- Authority
- DE
- Germany
- Prior art keywords
- address system
- servo address
- servo
- address
- 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
- 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
- G11B5/58—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 for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/596—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 for the purpose of maintaining alignment of the head 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 on disks
- G11B5/59688—Servo signal format patterns or signal processing thereof, e.g. dual, tri, quad, burst signal patterns
-
- 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
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/173,770 US4977472A (en) | 1988-03-28 | 1988-03-28 | Servo address system |
| SG153794A SG153794G (en) | 1988-03-28 | 1994-10-21 | Servo address system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE68915842D1 true DE68915842D1 (de) | 1994-07-14 |
| DE68915842T2 DE68915842T2 (de) | 1994-09-15 |
Family
ID=26664450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE68915842T Expired - Fee Related DE68915842T2 (de) | 1988-03-28 | 1989-03-08 | Servoadresssystem. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4977472A (de) |
| EP (1) | EP0335517B1 (de) |
| JP (1) | JP2694850B2 (de) |
| DE (1) | DE68915842T2 (de) |
| HK (1) | HK144894A (de) |
| SG (1) | SG153794G (de) |
Families Citing this family (50)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6104558A (en) * | 1974-12-27 | 2000-08-15 | International Business Machines Corporation | System and method of encoding an index mark into a servo address |
| JP2646645B2 (ja) * | 1988-04-18 | 1997-08-27 | ソニー株式会社 | 光ディスクの光スポット移動装置 |
| US5121270A (en) * | 1989-09-19 | 1992-06-09 | Alcudia Ezra R | Multitransducer head positioning servo for use in a bi-directional magnetic tape system |
| US5041926A (en) * | 1989-11-13 | 1991-08-20 | Hewlett-Packard Company | Track position syncopation cancellation in a disk drive |
| JP2946636B2 (ja) * | 1990-05-21 | 1999-09-06 | ソニー株式会社 | 磁気ディスク装置のトラックアドレスパターン |
| US5268800A (en) * | 1990-11-13 | 1993-12-07 | Areal Technology | Disk drive servosystem using gray code |
| US5262907A (en) * | 1991-07-31 | 1993-11-16 | Seagate Technology, Inc. | Hard disc drive with improved servo system |
| US5307216A (en) * | 1991-09-04 | 1994-04-26 | International Business Machines Corporation | Sector identification method and apparatus for a direct access storage device |
| US5379171A (en) * | 1991-09-25 | 1995-01-03 | Integral Peripherals | Microminiature hard disk drive |
| US6310747B1 (en) | 1991-09-25 | 2001-10-30 | Mobile Storage Technology, Inc. | Method for reducing external signal interference with signals in a computer disk storage system |
| US5768075A (en) | 1991-12-17 | 1998-06-16 | Baradun R&D Ltd. | Disk medium w/magnetically filled features aligned in rows and columns |
| WO1993012520A1 (en) * | 1991-12-17 | 1993-06-24 | Certus Magnetics | Magnetic disk medium with designed textured surfaces and controlled surface roughness and method of providing same |
| US5724539A (en) * | 1992-03-19 | 1998-03-03 | Digital Equipment Corporation | System for selectively storing stripes of data in tracks of disks so that sum of transfer rates of stripes match communication bandwidth to host |
| US5455724A (en) * | 1992-03-31 | 1995-10-03 | Fujitsu Limited | Method of compensating offtrack in disk unit |
| US5365382A (en) * | 1993-05-18 | 1994-11-15 | Digital Equipment Corporation | Synchronization to different fields in a storage device |
| US5432652A (en) * | 1993-06-14 | 1995-07-11 | International Business Machines Corporation | Servo and data format for magnetic tape having plural spaced-apart servo areas interleaved with data track areas having serpentine track scanning using any one of a plurality of number of concurrently accessed tracks |
| US5574602A (en) * | 1993-06-14 | 1996-11-12 | International Business Machines Corporation | Processing servo signals concurrently read from plural spaced-apart servo areas for a magnetic tape having serpentine data track scanning |
| US5442498A (en) * | 1993-11-08 | 1995-08-15 | International Business Machines Corporation | Asynchronous track code encodement and detection for disk drive servo control system |
| JP2635939B2 (ja) * | 1994-09-29 | 1997-07-30 | 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 | 情報記録媒体、ヘッド位置識別情報の生成方法、ヘッド位置判定方法、及び情報記録・読取装置 |
| US5615065A (en) * | 1994-10-04 | 1997-03-25 | International Business Machines Corporation | Phase-compensated servo pattern and position error-sensing detector |
| US5602692A (en) * | 1994-10-07 | 1997-02-11 | International Business Machines Corporation | Sampled position error signal demodulation system for banded data disk drives |
| JP3096951B2 (ja) * | 1994-12-09 | 2000-10-10 | アルプス電気株式会社 | 磁気記録再生装置 |
| US6091559A (en) * | 1994-12-19 | 2000-07-18 | Mobile Storage Technology Inc. | Variable zone layout and track pitch parameter considerations for information storage disk drive |
| US5596458A (en) * | 1994-12-19 | 1997-01-21 | Integral Peripherals, Inc. | Variable zone layout for information storage disk drive |
| KR0143532B1 (ko) * | 1994-12-21 | 1998-07-15 | 김광호 | 콘스턴트-덴시티 기록형태의 자기디스크와 그 구동장치 및 액세스방법 |
| US5596460A (en) * | 1994-12-27 | 1997-01-21 | International Business Machines Corporation | System and method for encoding a servo address |
| US6424479B1 (en) | 1995-01-20 | 2002-07-23 | Sony Corporation | Magnetic disk having address information in a form which represents grey code between neighboring recording tracks and a reproducing apparatus therefor |
| US5717538A (en) * | 1995-01-20 | 1998-02-10 | International Business Machines Corporation | Asynchronous position error signal detector employing weighted accumulation for use in servo system |
| KR0143102B1 (ko) * | 1995-02-08 | 1998-07-15 | 김광호 | 콘스턴트-덴시티 기록형태의 자기 디스크 장치와 그에 사용되는 자기 디스크 |
| JP3373857B2 (ja) * | 1995-06-07 | 2003-02-04 | シーゲイト テクノロジー エルエルシー | 局所サーボアドレス符号化の符号率ｎ／ｎ＋１ |
| KR0176651B1 (ko) * | 1996-06-27 | 1999-04-15 | 김광호 | 서보 어드레스 마크 자동검출 및 서보타이밍 보상회로 |
| US5946156A (en) * | 1997-03-04 | 1999-08-31 | Imation Corp. | Tape servo system and methods, write/read heads, and servo track configurations regarding same |
| US6462898B2 (en) * | 1998-06-16 | 2002-10-08 | International Business Machines Corporation | Disk drive with information encoded in the position error signal fields |
| US6429994B1 (en) * | 1998-08-14 | 2002-08-06 | Samsung Electronics Co., Ltd | Method and apparatus for providing servo gain linearization for a magneto-resistive head |
| US6441988B2 (en) | 1998-10-07 | 2002-08-27 | Samsung Electronics Co., Ltd. | Method and apparatus for reducing acoustic noise in a hard disk drive |
| US6704354B1 (en) * | 1998-10-16 | 2004-03-09 | Samsung Electronics Co., Ltd. | Method and apparatus of providing adaptive equalization using sign permutation filtering |
| US6587293B1 (en) | 1999-05-07 | 2003-07-01 | Seagate Technology Llc | Method for servo writing servo pattern at a desired speed |
| US6330123B1 (en) | 1999-05-28 | 2001-12-11 | Imation Corp. | Head assembly having a single pass servo writer |
| US6687079B1 (en) | 1999-10-08 | 2004-02-03 | Samsung Electronics Co., Ltd | Apparatus and method for providing servo gain linearization for a magneto-resistive head |
| US6501613B1 (en) | 1999-12-15 | 2002-12-31 | Samsung Electronics Co., Ltd. | Generalized Fourier seek method and apparatus for a hard disk drive servomechanism |
| US6549364B1 (en) | 1999-12-15 | 2003-04-15 | Samsung Electronics Co., Ltd. | Optimization method and apparatus for a generalized fourier seek trajectory for a hard disk drive servomechanism |
| US6744590B2 (en) | 2000-09-14 | 2004-06-01 | Samsung Electronics Co., Inc. | Seek trajectory adaptation in sinusoidal seek servo hard disk drives |
| US6982849B2 (en) * | 2000-09-14 | 2006-01-03 | Samsung Electronics Co., Ltd. | Method and apparatus for providing positional information on a disk |
| US6801384B2 (en) | 2000-09-14 | 2004-10-05 | Samsung Electronics Co., Ltd. | Voltage-constrained sinusoidal seek servo in hard disk drives |
| US6762902B2 (en) | 2000-12-15 | 2004-07-13 | Samsung Electronics Co., Ltd. | Time-varying, non-synchronous disturbance identification and cancellation in a rotating disk storage device |
| US6700731B2 (en) * | 2001-05-31 | 2004-03-02 | Samsung Electronics Co., Inc. | In-situ linearization of magnetic read/write head transducer position error signal |
| JP2004246967A (ja) * | 2003-02-13 | 2004-09-02 | Fuji Electric Holdings Co Ltd | マスタディスク及びその製造方法 |
| JP4327824B2 (ja) * | 2006-06-30 | 2009-09-09 | 株式会社東芝 | 磁気ディスク装置、サーボ書込み方法及び検査方法 |
| US7768735B2 (en) * | 2007-08-28 | 2010-08-03 | Seagate Technology Llc | Angular and radial location determination in a control system |
| US9111565B2 (en) * | 2009-01-16 | 2015-08-18 | Seagate Technology Llc | Data storage device with both bit patterned and continuous media |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3691543A (en) * | 1971-02-08 | 1972-09-12 | Ibm | Positioning system including servo track configuration and associated demodulator |
| JPS5468209A (en) * | 1977-10-31 | 1979-06-01 | Burroughs Corp | Magnetic recording system |
| US4472750A (en) * | 1981-07-02 | 1984-09-18 | Irwin Magnetic Systems, Inc. | Data record with pre-recorded transducer positioning signals, and system for utilizing same |
| GB2121654A (en) * | 1981-11-16 | 1983-12-21 | Dma Systems Corp | Track identification code recording method |
| JPS58218081A (ja) * | 1982-06-14 | 1983-12-19 | Toshiba Corp | ヘツドの位置決め方式 |
| JPS60193176A (ja) * | 1984-03-13 | 1985-10-01 | Toshiba Corp | ヘツドの位置決め方式 |
| US4682253A (en) * | 1986-04-23 | 1987-07-21 | Rodime Plc | Servo positioning system for disk drive system |
| US4669003A (en) * | 1986-05-02 | 1987-05-26 | Hewlett-Packard Company | Method and apparatus for eliminating apparent offset in the servo code in a magnetic disc drive |
-
1988
- 1988-03-28 US US07/173,770 patent/US4977472A/en not_active Expired - Lifetime
-
1989
- 1989-03-08 DE DE68915842T patent/DE68915842T2/de not_active Expired - Fee Related
- 1989-03-08 EP EP89302294A patent/EP0335517B1/de not_active Expired - Lifetime
- 1989-03-27 JP JP1074795A patent/JP2694850B2/ja not_active Expired - Lifetime
-
1994
- 1994-10-21 SG SG153794A patent/SG153794G/en unknown
- 1994-12-22 HK HK144894A patent/HK144894A/xx not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JP2694850B2 (ja) | 1997-12-24 |
| JPH01312785A (ja) | 1989-12-18 |
| DE68915842T2 (de) | 1994-09-15 |
| EP0335517B1 (de) | 1994-06-08 |
| US4977472A (en) | 1990-12-11 |
| HK144894A (en) | 1994-12-30 |
| SG153794G (en) | 1995-03-17 |
| EP0335517A2 (de) | 1989-10-04 |
| EP0335517A3 (de) | 1991-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: SEAGATE TECHNOLOGY LLC, SCOTTS VALLEY, CALIF., US |
|
| 8328 | Change in the person/name/address of the agent |
Free format text: HENKEL, FEILER & HAENZEL, 81675 MUENCHEN |