NL7707468A - Magnetische schijfgeheugens. - Google Patents
Magnetische schijfgeheugens.Info
- Publication number
- NL7707468A NL7707468A NL7707468A NL7707468A NL7707468A NL 7707468 A NL7707468 A NL 7707468A NL 7707468 A NL7707468 A NL 7707468A NL 7707468 A NL7707468 A NL 7707468A NL 7707468 A NL7707468 A NL 7707468A
- Authority
- NL
- Netherlands
- Prior art keywords
- magnetic disk
- disk memories
- memories
- magnetic
- disk
- 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
- G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
- G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
-
- 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
- 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
- G11B27/32—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 separate auxiliary tracks of the same or an auxiliary record carrier
-
- 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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB27973/76A GB1549440A (en) | 1976-07-06 | 1976-07-06 | Magnetic storage devices |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7707468A true NL7707468A (nl) | 1978-01-10 |
Family
ID=10268239
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7707468A NL7707468A (nl) | 1976-07-06 | 1977-07-05 | Magnetische schijfgeheugens. |
Country Status (5)
Country | Link |
---|---|
US (1) | US4149199A (nl) |
JP (1) | JPS537214A (nl) |
FR (1) | FR2357963A1 (nl) |
GB (1) | GB1549440A (nl) |
NL (1) | NL7707468A (nl) |
Families Citing this family (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4087842A (en) * | 1976-11-05 | 1978-05-02 | Graham Magnetics Inc. | Recording track eccentricity compensation method and means |
US4270073A (en) * | 1979-02-28 | 1981-05-26 | Persci, Inc. | Position control in disk drive system |
US4380033A (en) * | 1979-07-19 | 1983-04-12 | Burroughs Corporation | Disc-drive head positioning systems |
US4321636A (en) * | 1980-03-17 | 1982-03-23 | Magnetic Peripherals Inc. | Cateye-signal intercept detector for aligning a read-write head above a computer data storage disk |
US4323998A (en) * | 1980-08-21 | 1982-04-06 | Rca Corporation | Video disc locked groove corrector |
JPS5753830A (en) * | 1980-09-12 | 1982-03-31 | Sony Corp | Tracking servo device for optical information signal reproducer |
US4380034A (en) * | 1980-09-26 | 1983-04-12 | Magnetic Peripherals Inc. | Track centering servo pulse noise filter |
JPS5783978A (en) * | 1980-11-12 | 1982-05-26 | Sony Corp | Video signal recorder and reproducer |
US4418368A (en) * | 1981-03-31 | 1983-11-29 | Disctron, Inc. | Method and apparatus for positioning a transducer using embedded servo track encoding |
US4513331A (en) * | 1982-10-12 | 1985-04-23 | Dysan Corporation | Method and apparatus for disk drive alignment |
JPS5996570A (ja) * | 1982-11-25 | 1984-06-04 | Canon Inc | トラツキング制御装置 |
DE3374731D1 (en) * | 1983-06-30 | 1988-01-07 | Ibm | Track following servo system for a disk file |
US4530020A (en) * | 1984-06-06 | 1985-07-16 | Dma Systems | Self-timed runout correction pattern |
US4628379A (en) * | 1984-09-25 | 1986-12-09 | Amcodyne Incorporated | Disk runout compensator |
US4608618A (en) * | 1984-10-25 | 1986-08-26 | Verbatim Corporation | Digital alignment diagnostic disk |
US4811133A (en) * | 1985-05-22 | 1989-03-07 | Fuji Photo Film Co., Ltd. | Electronic still video record/play head positioner having both open and closed loop positioning control |
JP2593437B2 (ja) * | 1985-09-24 | 1997-03-26 | 株式会社東芝 | 磁気デイスクのサーボ位置決め装置 |
US4835631A (en) * | 1985-12-05 | 1989-05-30 | Fuji Photo Film Co., Ltd. | Apparatus for controlling playback head tracking for rotary recording medium using average peak envelope position |
JPS62177772A (ja) * | 1986-01-31 | 1987-08-04 | Toshiba Corp | デイスク記録再生装置 |
US4710691A (en) * | 1986-03-27 | 1987-12-01 | Anacomp, Inc. | Process and apparatus for characterizing and controlling a synchronous motor in microstepper mode |
GB2191627B (en) * | 1986-06-04 | 1990-07-04 | Alps Electric Co Ltd | Information recording disk driving devices and a method of controlling the head positioning of such devices |
JPS62289977A (ja) * | 1986-06-06 | 1987-12-16 | Matsushita Electric Ind Co Ltd | 磁気デイスク装置 |
USRE35302E (en) * | 1986-08-27 | 1996-07-23 | Sony Corporation | Magnetic disc apparatus |
US4974109A (en) * | 1986-08-27 | 1990-11-27 | Sony Corporation | Hard disk drive employing a reference track to compensate for tracking error |
US4928192A (en) * | 1987-12-23 | 1990-05-22 | Konica Corporation | Process for identifying disks and automatically configuring a disk drive system |
JPH01194176A (ja) * | 1988-01-28 | 1989-08-04 | Mitsumi Electric Co Ltd | 磁気ディスク装置のヘッド位置決め方式 |
US4958245A (en) * | 1988-04-07 | 1990-09-18 | Insite Peripherals, Inc. | Apparatus and method for optical servo control with media having information storage and servo control regions of different reflectivities |
US4935835A (en) * | 1988-11-10 | 1990-06-19 | Insite Peripherals, Inc. | Magnetic media containing reference feature and methods for referencing magnetic head position to the reference feature |
GB2238630B (en) * | 1989-11-29 | 1993-12-22 | Sundstrand Corp | Control systems |
US5233487A (en) * | 1991-06-27 | 1993-08-03 | International Business Machines Corporation | Functional measurement of data head misregistration |
US5424885A (en) * | 1993-01-11 | 1995-06-13 | Seagate Technology, Inc. | Method for following data tracks in a disc drive using an improved thermal calibration method |
US5777816A (en) * | 1993-05-12 | 1998-07-07 | Seagate Technology, Inc. | Data track following method for disc drives |
US5617388A (en) * | 1993-05-31 | 1997-04-01 | Sony Corporation | Disc recording/reproducing apparatus which uses stored eccentricity data to maintain the read/write head at a constant radial position during a stand-by mode |
WO1995005659A1 (en) * | 1993-08-17 | 1995-02-23 | Trace Mountain Products, Inc. | Disk chucking failure detection system |
DE69421785T2 (de) | 1993-09-28 | 2000-05-11 | Sony Corp., Tokio/Tokyo | Gerät zum Messen der Exzentrizität einer Scheibe, Verfahren dazu und Aufzeichnungs- und/oder Wiedergabegerät für scheibenförmiges Aufzeichnungsmedium |
JP2965062B2 (ja) | 1996-06-10 | 1999-10-18 | 富士通株式会社 | ディスク装置及びディスク装置のヘッド位置制御方法 |
JP3253535B2 (ja) * | 1996-09-20 | 2002-02-04 | 富士通株式会社 | ディスク装置のヘッド位置決め制御装置及び磁気ディスク装置 |
US6137753A (en) * | 1997-04-14 | 2000-10-24 | Oak Technology, Inc. | Runout calibration for disc drive system |
JP2002538570A (ja) | 1999-02-22 | 2002-11-12 | シーゲイト テクノロジー エルエルシー | 再現性ランアウト・エラーの補償 |
GB2364433A (en) | 1999-05-07 | 2002-01-23 | Seagate Technology Llc | Repeatable runout compensation using iterative learning control in a disc storage system |
DE10084854T1 (de) | 1999-07-23 | 2002-07-25 | Seagate Technology Llc | Kompensierung eines wiederholbaren Runout unter Verwendung eines Lernalgorithmus mit geplanten Parametern |
US6952320B1 (en) | 1999-12-16 | 2005-10-04 | Seagate Technology Llc | Virtual tracks for repeatable runout compensation |
JP2004103144A (ja) * | 2002-09-11 | 2004-04-02 | Fujitsu Ltd | 円盤状記録媒体を備えた記録装置およびサーボ情報処理方法 |
TW200641846A (en) * | 2005-05-23 | 2006-12-01 | Sunplus Technology Co Ltd | Radial runout detection method and device for an optical disk drive |
US20070213705A1 (en) * | 2006-03-08 | 2007-09-13 | Schmid Peter M | Insulated needle and system |
JP4498303B2 (ja) * | 2006-04-14 | 2010-07-07 | 東芝ストレージデバイス株式会社 | 位置決め制御回路、その磁気ディスク装置、及び追従情報を測定する方法 |
JP4364284B1 (ja) * | 2008-04-23 | 2009-11-11 | 株式会社東芝 | ディスク記憶装置及びオフセット測定方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1369155A (en) * | 1972-01-19 | 1974-10-02 | Int Computers Ltd | Servo systems |
-
1976
- 1976-07-06 GB GB27973/76A patent/GB1549440A/en not_active Expired
-
1977
- 1977-07-05 NL NL7707468A patent/NL7707468A/nl not_active Application Discontinuation
- 1977-07-06 FR FR7720844A patent/FR2357963A1/fr active Granted
- 1977-07-06 JP JP8090077A patent/JPS537214A/ja active Pending
- 1977-07-06 US US05/813,416 patent/US4149199A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2357963B3 (nl) | 1980-05-16 |
JPS537214A (en) | 1978-01-23 |
US4149199A (en) | 1979-04-10 |
FR2357963A1 (fr) | 1978-02-03 |
GB1549440A (en) | 1979-08-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BV | The patent application has lapsed |