SG64475A1 - Method and apparatus for encoding digital servo information in a servo burst - Google Patents
Method and apparatus for encoding digital servo information in a servo burstInfo
- Publication number
- SG64475A1 SG64475A1 SG1998000379A SG1998000379A SG64475A1 SG 64475 A1 SG64475 A1 SG 64475A1 SG 1998000379 A SG1998000379 A SG 1998000379A SG 1998000379 A SG1998000379 A SG 1998000379A SG 64475 A1 SG64475 A1 SG 64475A1
- Authority
- SG
- Singapore
- Prior art keywords
- servo
- encoding digital
- burst
- information
- servo information
- Prior art date
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
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/08—Track changing or selecting during transducing operation
- G11B21/081—Access to indexed tracks or parts of continuous track
- G11B21/083—Access to indexed tracks or parts of continuous track on discs
- G11B21/085—Access to indexed tracks or parts of continuous track on discs with track following of accessed part
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/10—Track finding or aligning by moving the head ; Provisions for maintaining alignment of the head relative to the track during transducing operation, i.e. track following
-
- 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
- G11B5/59633—Servo formatting
- G11B5/59655—Sector, sample or burst servo format
-
- 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
- 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
- G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
-
- 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
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/813,775 US6049438A (en) | 1997-03-07 | 1997-03-07 | Method and apparatus for encoding digital servo information in a servo burst |
Publications (1)
Publication Number | Publication Date |
---|---|
SG64475A1 true SG64475A1 (en) | 1999-04-27 |
Family
ID=25213351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG1998000379A SG64475A1 (en) | 1997-03-07 | 1998-02-20 | Method and apparatus for encoding digital servo information in a servo burst |
Country Status (4)
Country | Link |
---|---|
US (1) | US6049438A (ja) |
JP (1) | JP3761703B2 (ja) |
KR (1) | KR100292293B1 (ja) |
SG (1) | SG64475A1 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE60030653T2 (de) * | 1999-04-20 | 2007-09-06 | Koninklijke Philips Electronics N.V. | Servoformat für platten, vorzugsweise festplatten |
US6480984B1 (en) * | 1999-06-23 | 2002-11-12 | Agere Systems Inc. | Rate (M/N) code encoder, detector, and decoder for control data |
US6606728B1 (en) * | 1999-06-23 | 2003-08-12 | Agere Systems Inc. | Rate (M/N) code encoder, detector, and decoder for control data |
JP2001110027A (ja) * | 1999-10-08 | 2001-04-20 | Hitachi Ltd | 磁気記憶装置 |
JP3683155B2 (ja) * | 2000-03-08 | 2005-08-17 | 富士通株式会社 | ディスク装置のヘッド位置決め制御方法及び装置 |
US6873483B2 (en) * | 2002-02-07 | 2005-03-29 | Hitachi Global Storage Technologies Netherlands B.V. | Disk drive with servo synchronous recording |
US7242546B2 (en) * | 2003-10-13 | 2007-07-10 | Seagate Technology Llc | Determining a location based on a cyclic bit sequence containing consecutively-placed identical bit-groups |
JP2006147096A (ja) * | 2004-11-22 | 2006-06-08 | Hitachi Global Storage Technologies Netherlands Bv | 磁気ディスク媒体、磁気ディスク装置、及び磁気ディスク媒体の回転位置検出方法 |
US7405893B2 (en) * | 2005-09-21 | 2008-07-29 | Seagate Technology Llc | Data storage medium with optimized servo format |
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 |
US7538969B2 (en) * | 2006-08-23 | 2009-05-26 | Imation Corp. | Servo pattern with encoded data |
US7715137B2 (en) * | 2006-10-19 | 2010-05-11 | Hitachi Global Storage Technologies Netherlands B.V. | Servo patterns for patterned media |
US7916415B1 (en) | 2008-03-27 | 2011-03-29 | Western Digital Technologies, Inc. | Disk drive decoding binary sequence from phases of servo bursts |
US7710676B1 (en) | 2008-03-27 | 2010-05-04 | Western Digital Technologies, Inc. | Disk drive comprising gray code implemented with servo bursts |
US8947809B2 (en) | 2008-09-19 | 2015-02-03 | Seagate Technology Llc | Encoding scheme for bit patterned media |
US8824079B2 (en) * | 2008-09-15 | 2014-09-02 | Seagate Technology Llc | Servo patterns for bit patterned media with multiple dots per servo period |
US7920354B2 (en) * | 2008-09-15 | 2011-04-05 | Seagate Technology Llc | Phase servo patterns for bit patterned media |
US20110051286A1 (en) * | 2009-09-01 | 2011-03-03 | Seagate Technology Llc | Writing data on alternating magnetic and nonmagnetic stripes of a servo pattern |
US7961424B2 (en) * | 2009-10-30 | 2011-06-14 | International Business Machines Corporation | Multilevel pulse position modulation for efficient encoding of information into servo patterns |
US9384779B2 (en) * | 2009-12-18 | 2016-07-05 | HGST Netherlands B.V. | Information storage device with multiple-use fields in servo pattern |
US8054568B2 (en) * | 2010-02-24 | 2011-11-08 | International Business Machines Corporation | Synchronization of symmetric timing based servo bursts |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4195320A (en) * | 1978-05-15 | 1980-03-25 | International Business Machines Corporation | Record track identification and following |
US4783705A (en) * | 1986-02-27 | 1988-11-08 | Quantum Corporation | High capacity disk file with embedded sector servo and SCSI interface |
US4669004A (en) * | 1986-02-27 | 1987-05-26 | Quantum Corporation | High capacity disk file with embedded sector servo |
JPH04302864A (ja) * | 1991-03-29 | 1992-10-26 | Toshiba Corp | 磁気記録再生装置のサーボデータ記録方法 |
JP2625609B2 (ja) * | 1991-07-10 | 1997-07-02 | 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 | ディスク記憶装置 |
US5369535A (en) * | 1992-03-25 | 1994-11-29 | International Business Machines Corporation | Fixed block architecture disk file with improved position identification and error handling |
US5600499A (en) * | 1993-04-09 | 1997-02-04 | Western Digital Corporation | Tri-bit encoding for disk drive servo track ID information |
US5523903A (en) * | 1993-12-23 | 1996-06-04 | International Business Machines Corporation | Sector architecture for fixed block disk drive |
US5825579A (en) * | 1996-04-04 | 1998-10-20 | International Business Machines Corporation | Disk drive servo sensing gain normalization and linearization |
-
1997
- 1997-03-07 US US08/813,775 patent/US6049438A/en not_active Expired - Lifetime
- 1997-10-29 KR KR1019970055773A patent/KR100292293B1/ko not_active IP Right Cessation
-
1998
- 1998-02-19 JP JP03689298A patent/JP3761703B2/ja not_active Expired - Fee Related
- 1998-02-20 SG SG1998000379A patent/SG64475A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
KR19980079440A (ko) | 1998-11-25 |
US6049438A (en) | 2000-04-11 |
KR100292293B1 (ko) | 2002-08-08 |
JP3761703B2 (ja) | 2006-03-29 |
JPH10255417A (ja) | 1998-09-25 |
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