JPS6326456B2 - - Google Patents
Info
- Publication number
- JPS6326456B2 JPS6326456B2 JP55060924A JP6092480A JPS6326456B2 JP S6326456 B2 JPS6326456 B2 JP S6326456B2 JP 55060924 A JP55060924 A JP 55060924A JP 6092480 A JP6092480 A JP 6092480A JP S6326456 B2 JPS6326456 B2 JP S6326456B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- amplitude
- excitation
- track
- component
- 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
Links
- 230000005284 excitation Effects 0.000 claims description 76
- 238000001514 detection method Methods 0.000 claims description 31
- 230000007423 decrease Effects 0.000 description 25
- 238000010586 diagram Methods 0.000 description 10
- 239000000284 extract Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012887 quadratic function Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
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
- G11B5/584—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 tapes
- G11B5/588—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 tapes by controlling the position of the rotating heads
Landscapes
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6092480A JPS56156924A (en) | 1980-05-08 | 1980-05-08 | Track following device |
US06/259,959 US4404605A (en) | 1980-05-08 | 1981-05-04 | Head tracking control system |
CA000376761A CA1168751A (en) | 1980-05-08 | 1981-05-04 | Head tracking control system |
EP81103491A EP0039915B1 (en) | 1980-05-08 | 1981-05-07 | Head tracking control system |
DE8181103491T DE3162244D1 (en) | 1980-05-08 | 1981-05-07 | Head tracking control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6092480A JPS56156924A (en) | 1980-05-08 | 1980-05-08 | Track following device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56156924A JPS56156924A (en) | 1981-12-03 |
JPS6326456B2 true JPS6326456B2 (US06330241-20011211-M00004.png) | 1988-05-30 |
Family
ID=13156411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6092480A Granted JPS56156924A (en) | 1980-05-08 | 1980-05-08 | Track following device |
Country Status (5)
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0304633B1 (en) * | 1982-09-17 | 1993-01-20 | Ampex Corporation | An improved automatic head position tracking servo for a rotary head magnetic tape recording and reproducing apparatus |
FR2537603B1 (fr) * | 1982-12-08 | 1985-07-12 | Guerin Maurice | Digesteur continu pour la production de biomethane a partir de substances organiques |
JPS59191126A (ja) * | 1983-04-14 | 1984-10-30 | Victor Co Of Japan Ltd | ビデオヘツドの位置制御装置 |
US5189572A (en) * | 1984-08-16 | 1993-02-23 | Ampex Corporation | Magnetic control of a transducer signal transfer zone to effect tracking of a path along a record medium |
JPS61265783A (ja) * | 1985-05-20 | 1986-11-25 | Sanyo Electric Co Ltd | 自動トラツキング制御装置 |
US4706135A (en) * | 1986-01-10 | 1987-11-10 | Tokai Television Broadcasting Company Limited | Video recording apparatus with editing and mixing of delayed monitored video signal using equidistant record, read and erase heads |
BR8706802A (pt) * | 1986-03-24 | 1988-02-23 | Ampex | Sistema,aparelho e processo para controle de rastreamento por uma cabeca magnetica de exploracao magneticamente controlada |
US4814908A (en) * | 1986-12-03 | 1989-03-21 | Magnetic Peripherals Inc. | Thermo servo for track centering on a disk |
FR2608825B1 (fr) * | 1986-12-19 | 1994-12-30 | Enertec | Dispositif pour la detection de la position d'une tete magnetique |
US5047883A (en) * | 1990-02-07 | 1991-09-10 | Ampex Corporation | Pantograph head mount having double leaves integral with a rigid tip structure |
US5050018A (en) * | 1990-04-19 | 1991-09-17 | Exabyte Corporation | Apparatus and method for reading helically recorded tracks and rereading tracks as necessary |
JP2607756B2 (ja) * | 1990-07-18 | 1997-05-07 | シーゲイト テクノロジー インターナショナル | 磁気ディスクのトラック上でトランスデューサーを位置決めする装置 |
US5191491A (en) * | 1990-11-09 | 1993-03-02 | Exabyte Corporation | Method and apparatus for reading distorted helical stripes |
KR940009171B1 (ko) * | 1990-12-29 | 1994-10-01 | 삼성전자 주식회사 | 에러플래그신호를 이용한 다이내믹 트래킹장치 및 방식 |
US5349481A (en) * | 1993-06-10 | 1994-09-20 | Exabyte Corporation | Apparatus and method for distorted track data recovery by rewinding and re-reading the tape at a slower than nominal speed |
US6307701B1 (en) | 1998-10-20 | 2001-10-23 | Ecrix Corporation | Variable speed recording method and apparatus for a magnetic tape drive |
US6381706B1 (en) | 1998-10-20 | 2002-04-30 | Ecrix Corporation | Fine granularity rewrite method and apparatus for data storage device |
US6246551B1 (en) | 1998-10-20 | 2001-06-12 | Ecrix Corporation | Overscan helical scan head for non-tracking tape subsystems reading at up to 1X speed and methods for simulation of same |
US6367047B1 (en) | 1998-10-20 | 2002-04-02 | Ecrix | Multi-level error detection and correction technique for data storage recording device |
US6603618B1 (en) | 1998-11-16 | 2003-08-05 | Exabyte Corporation | Method and system for monitoring and adjusting tape position using control data packets |
US6367048B1 (en) | 1998-11-16 | 2002-04-02 | Mcauliffe Richard | Method and apparatus for logically rejecting previously recorded track residue from magnetic media |
US6308298B1 (en) * | 1998-11-16 | 2001-10-23 | Ecrix Corporation | Method of reacquiring clock synchronization on a non-tracking helical scan tape device |
US6233109B1 (en) | 1999-01-11 | 2001-05-15 | Storage Technology Corporation | Magnetic tape drive having a set of heads configured such that at least one of the heads reads a desired data track |
US6624960B1 (en) | 2000-03-10 | 2003-09-23 | Exabyte Corporation | Current sensing drum/cleaning wheel positioning method and apparatus for magnetic storage system |
US6364234B1 (en) | 2000-03-10 | 2002-04-02 | Michael Donald Langiano | Tape loop/slack prevention method and apparatus for tape drive |
US7064913B2 (en) * | 2002-01-09 | 2006-06-20 | Quantum Corporation | Enhanced read margining using dither enhanced write marginalization for mass data storage applications |
US7372651B2 (en) | 2003-03-07 | 2008-05-13 | Quantum Corporation | Introducing a noise signal into a read-back signal when data is written to a removable data storage medium |
US8743495B1 (en) | 2011-06-03 | 2014-06-03 | Western Digital Technologies, Inc. | Disk drive detecting track squeeze when circular tracks are defined from non-circular servo tracks |
US8749904B1 (en) * | 2012-02-28 | 2014-06-10 | Western Digital Technologies, Inc. | Disk drive compensating for track squeeze by writing non-circular servo tracks |
US8717704B1 (en) * | 2012-02-28 | 2014-05-06 | Western Digital Technologies, Inc. | Disk drive defining non-circular data tracks relative to a rotation axis of the disk |
US8929021B1 (en) | 2012-03-27 | 2015-01-06 | Western Digital Technologies, Inc. | Disk drive servo writing from spiral tracks using radial dependent timing feed-forward compensation |
US8670206B1 (en) | 2012-03-27 | 2014-03-11 | Western Digital Technologies, Inc. | Disk drive estimating repeatable runout of reference pattern based on repeatable runout of phase error |
US8724253B1 (en) | 2012-03-27 | 2014-05-13 | Western Digital Technologies, Inc. | Disk drive adjusting demodulation window for spiral track using timing feed-forward compensation |
US8917475B1 (en) | 2013-12-20 | 2014-12-23 | Western Digital Technologies, Inc. | Disk drive generating a disk locked clock using radial dependent timing feed-forward compensation |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2855464A (en) * | 1952-06-20 | 1958-10-07 | Armour Res Found | Electromagnetic head |
US2870267A (en) * | 1953-06-06 | 1959-01-20 | Philips Corp | Arrangement for scanning and reproducing magnetic fields |
US4080636A (en) * | 1976-03-19 | 1978-03-21 | Ampex Corporation | System for damping vibrations in a deflectable transducer |
US4151570A (en) * | 1976-03-22 | 1979-04-24 | Ampex Corporation | Automatic scan tracking using a magnetic head supported by a piezoelectric bender element |
JPS54307U (US06330241-20011211-M00004.png) * | 1977-06-04 | 1979-01-05 | ||
JPS5492308A (en) * | 1977-12-29 | 1979-07-21 | Sony Corp | Head tracking device in recorder-reproducer |
GB1580008A (en) * | 1977-06-04 | 1980-11-26 | Sony Corp | Automatic head tracking system |
JPS6125071Y2 (US06330241-20011211-M00004.png) * | 1978-03-03 | 1986-07-28 | ||
US4223358A (en) * | 1979-04-30 | 1980-09-16 | Sony Corporation | Method and apparatus for cancelling the remanent deflection in a _piezoceramic head support means of a video recorder |
-
1980
- 1980-05-08 JP JP6092480A patent/JPS56156924A/ja active Granted
-
1981
- 1981-05-04 CA CA000376761A patent/CA1168751A/en not_active Expired
- 1981-05-04 US US06/259,959 patent/US4404605A/en not_active Expired - Lifetime
- 1981-05-07 DE DE8181103491T patent/DE3162244D1/de not_active Expired
- 1981-05-07 EP EP81103491A patent/EP0039915B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0039915A1 (en) | 1981-11-18 |
US4404605A (en) | 1983-09-13 |
CA1168751A (en) | 1984-06-05 |
EP0039915B1 (en) | 1984-02-15 |
DE3162244D1 (en) | 1984-03-22 |
JPS56156924A (en) | 1981-12-03 |
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