DE69818345T2 - Rauschmessung in Datenspeichergeräten - Google Patents
Rauschmessung in Datenspeichergeräten Download PDFInfo
- Publication number
- DE69818345T2 DE69818345T2 DE69818345T DE69818345T DE69818345T2 DE 69818345 T2 DE69818345 T2 DE 69818345T2 DE 69818345 T DE69818345 T DE 69818345T DE 69818345 T DE69818345 T DE 69818345T DE 69818345 T2 DE69818345 T2 DE 69818345T2
- Authority
- DE
- Germany
- Prior art keywords
- noise
- loop
- pes
- measurement
- measure
- 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
- 238000005259 measurement Methods 0.000 title claims description 106
- 238000013500 data storage Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 claims description 106
- 230000000694 effects Effects 0.000 claims description 47
- 238000001228 spectrum Methods 0.000 claims description 36
- 238000001914 filtration Methods 0.000 claims description 32
- 230000003287 optical effect Effects 0.000 claims description 21
- 230000003595 spectral effect Effects 0.000 claims description 15
- 230000001186 cumulative effect Effects 0.000 claims description 7
- 230000006870 function Effects 0.000 description 43
- 230000008569 process Effects 0.000 description 35
- 238000013461 design Methods 0.000 description 33
- 238000004458 analytical method Methods 0.000 description 29
- 238000012546 transfer Methods 0.000 description 26
- 230000005291 magnetic effect Effects 0.000 description 24
- 238000001514 detection method Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 19
- 238000005316 response function Methods 0.000 description 17
- 230000035945 sensitivity Effects 0.000 description 16
- 230000004044 response Effects 0.000 description 14
- 238000000540 analysis of variance Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 10
- 238000003860 storage Methods 0.000 description 10
- 238000005070 sampling Methods 0.000 description 9
- 230000033001 locomotion Effects 0.000 description 8
- 238000013139 quantization Methods 0.000 description 8
- 238000012935 Averaging Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000003321 amplification Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- URWAJWIAIPFPJE-YFMIWBNJSA-N sisomycin Chemical compound O1C[C@@](O)(C)[C@H](NC)[C@@H](O)[C@H]1O[C@@H]1[C@@H](O)[C@H](O[C@@H]2[C@@H](CC=C(CN)O2)N)[C@@H](N)C[C@H]1N URWAJWIAIPFPJE-YFMIWBNJSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000011282 treatment Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000005457 optimization Methods 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 230000009897 systematic effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- BHELIUBJHYAEDK-OAIUPTLZSA-N Aspoxicillin Chemical compound C1([C@H](C(=O)N[C@@H]2C(N3[C@H](C(C)(C)S[C@@H]32)C(O)=O)=O)NC(=O)[C@H](N)CC(=O)NC)=CC=C(O)C=C1 BHELIUBJHYAEDK-OAIUPTLZSA-N 0.000 description 2
- 235000015429 Mirabilis expansa Nutrition 0.000 description 2
- 244000294411 Mirabilis expansa Species 0.000 description 2
- 241001168730 Simo Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000005311 autocorrelation function Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000002224 dissection Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 235000013536 miso Nutrition 0.000 description 2
- 238000003012 network analysis Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 230000033772 system development Effects 0.000 description 2
- 241001136792 Alle Species 0.000 description 1
- 101100453960 Drosophila melanogaster klar gene Proteins 0.000 description 1
- 241000721701 Lynx Species 0.000 description 1
- 206010035148 Plague Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000013213 extrapolation Methods 0.000 description 1
- 230000008713 feedback mechanism Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 230000004886 head movement Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011545 laboratory measurement Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000013208 measuring procedure Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005309 stochastic process Methods 0.000 description 1
- 230000001960 triggered effect Effects 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
- G11B5/596—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
- 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
-
- 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
- G11B5/54—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 into or out of its operative position or across tracks
- G11B5/55—Track change, selection or acquisition by displacement of the head
- G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
- G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
- G11B5/553—Details
-
- 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
- G11B5/59605—Circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2832—Specific tests of electronic circuits not provided for elsewhere
- G01R31/2836—Fault-finding or characterising
- G01R31/2837—Characterising or performance testing, e.g. of frequency response
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Feedback Control In General (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head To Find And Align With The Track (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US866367 | 1997-05-30 | ||
| US08/866,367 US5909661A (en) | 1997-05-30 | 1997-05-30 | Method and apparatus for decomposing drive error signal noise sources |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69818345D1 DE69818345D1 (de) | 2003-10-30 |
| DE69818345T2 true DE69818345T2 (de) | 2004-07-01 |
Family
ID=25347459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69818345T Expired - Fee Related DE69818345T2 (de) | 1997-05-30 | 1998-05-28 | Rauschmessung in Datenspeichergeräten |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5909661A (enExample) |
| EP (1) | EP0881626B1 (enExample) |
| JP (1) | JPH1172520A (enExample) |
| DE (1) | DE69818345T2 (enExample) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6381088B1 (en) | 1998-11-06 | 2002-04-30 | Acorn Technologies, Inc. | Apparatus for developing a dynamic servo signal from data in a magnetic disc drive and method |
| USRE40413E1 (en) * | 1998-11-06 | 2008-07-01 | Purchased Patent Management Llc | Method and apparatus for developing a dynamic servo signal from data |
| US6417982B1 (en) * | 1998-12-02 | 2002-07-09 | International Business Machines Corporation | System and method for identifying and filtering a head suspension assembly resonance frequency |
| US6456450B1 (en) * | 1998-12-04 | 2002-09-24 | International Business Machines Corporation | Method and apparatus for reducing track misregistration due to digital-to-analog converter quantization noise |
| JP3552158B2 (ja) * | 1999-04-08 | 2004-08-11 | 富士通株式会社 | 記憶装置 |
| US6522495B1 (en) * | 1999-04-16 | 2003-02-18 | International Business Machines Corporation | System, method and program for determining the magnetic center shift within a disk drive system |
| US6618219B1 (en) | 1999-10-12 | 2003-09-09 | Seagate Technology Llc | Method and apparatus for feedforward cancellation using a peak detector |
| US6628472B1 (en) * | 1999-10-12 | 2003-09-30 | Seagate Technoogy Llc | Method and apparatus for feedforward cancellation using a phase lock loop |
| US6545836B1 (en) | 1999-11-12 | 2003-04-08 | Acorn Technologies, Inc. | Servo control apparatus and method using absolute value input signals |
| US6594103B1 (en) | 1999-11-12 | 2003-07-15 | Acorn Technologies, Inc. | Read channel generating absolute value servo signal |
| US6801387B1 (en) * | 2000-04-14 | 2004-10-05 | Seagate Technology Llc | Control flow instability to reduce disk flutter and half frequency whirl |
| SG104270A1 (en) * | 2000-06-14 | 2004-06-21 | Seagate Technology Llc | Feed-forward compensation of cage frequency using a reference head in a servo-writer |
| JP2004507024A (ja) | 2000-08-23 | 2004-03-04 | シーゲート テクノロジー リミテッド ライアビリティ カンパニー | Ｐｅｓ直線性に基づいてヘッドを高精度制御するためのトラック走査データを用いる方法と装置 |
| US6654198B2 (en) | 2000-08-23 | 2003-11-25 | Seagate Technology Llc | Repeatable run-out error compensation method for a disc drive |
| US6639753B1 (en) * | 2000-09-01 | 2003-10-28 | Hewlett-Packard Development Company, L.P. | Method of forming a head assembly, a head assembly, and a linear tape drive |
| JP4189119B2 (ja) * | 2000-09-21 | 2008-12-03 | 株式会社東芝 | ヘッド位置決め制御システム及び同システムを備えた磁気ディスク装置 |
| JP2002117636A (ja) * | 2000-10-03 | 2002-04-19 | Matsushita Electric Ind Co Ltd | 磁気ディスク装置の制御装置、方法、記録媒体及び磁気ディスク装置の検査方法、装置 |
| US7522480B2 (en) | 2001-01-25 | 2009-04-21 | Dphi Acquisitions, Inc. | Digital tracking servo system with multi-track seek with an acceleration clamp |
| SG125068A1 (en) | 2001-09-11 | 2006-09-29 | Seagate Technology Llc | Method for sensing run-out in data fields |
| US7027251B1 (en) | 2002-01-04 | 2006-04-11 | Maxtor Corporation | Method and apparatus to control pole tip protrusion |
| US7224548B1 (en) * | 2002-01-04 | 2007-05-29 | Maxtor Corporation | Determining contact write current in disk drive using position error signal variance |
| US6895352B2 (en) * | 2002-03-12 | 2005-05-17 | Itt Manufacturing Enterprises, Inc. | Simultaneous rapid open and closed loop bode plot measurement using a binary pseudo-random sequence |
| US7023645B1 (en) | 2002-05-03 | 2006-04-04 | Maxtor Corporation | Read error recovery method and apparatus |
| US20030220751A1 (en) * | 2002-05-22 | 2003-11-27 | Toh Michael Joo Chiang | Method and apparatus to verify disc drive vibrational performance |
| US7035037B2 (en) * | 2002-06-18 | 2006-04-25 | Seagate Technology Llc | Disc drive with compensation for non-repeatable runout |
| US6782324B2 (en) * | 2002-08-16 | 2004-08-24 | Sun Microsystems, Inc. | Method and apparatus for using acoustic signals to identify one or more disc drives that are likely to fail |
| US7103426B2 (en) * | 2003-01-28 | 2006-09-05 | Rosemount Analytical Inc. | Anticipatory high frequency noise compensation in a distributed process control system |
| US7215623B2 (en) * | 2003-02-26 | 2007-05-08 | Matsushita Electric Industrial Co., Ltd. | Reproduction signal processing apparatus |
| US7050173B2 (en) * | 2003-04-01 | 2006-05-23 | Seagate Technology Llc | Method and arrangement for removing noise and measurements of head-media spacing modulation for digital recording |
| US7119986B2 (en) * | 2004-04-01 | 2006-10-10 | Seagate Technology Llc | Separator plate with head load/unload |
| EP1844466A2 (en) * | 2005-01-21 | 2007-10-17 | Koninklijke Philips Electronics N.V. | Disc drive apparatus with non-linear observer |
| US7328138B1 (en) * | 2005-07-21 | 2008-02-05 | Storage Technology Corporation | Method and system of measurement and optimization of noise in servo systems |
| US7865254B2 (en) * | 2007-01-11 | 2011-01-04 | The Mathworks, Inc. | Modeling of control systems with open-loop representations and factorization of components |
| US8086974B2 (en) * | 2008-03-31 | 2011-12-27 | International Business Machines Corporation | Structure for fractional-N phased-lock-loop (PLL) system |
| US7472362B1 (en) | 2008-03-31 | 2008-12-30 | International Business Machines Corporation | Method of minimizing phase noise |
| US7750697B2 (en) | 2008-03-31 | 2010-07-06 | International Business Machines Corporation | Fractional-N phased-lock-loop (PLL) system |
| US7926015B2 (en) * | 2008-03-31 | 2011-04-12 | International Business Machines Corporation | Optimization method for fractional-N phased-lock-loop (PLL) system |
| US9009455B2 (en) | 2011-05-03 | 2015-04-14 | Western Digital Technologies, Inc. | Booting from a secondary storage device in order to accumulate disk drive performance data |
| CN104614660B (zh) * | 2015-01-09 | 2017-04-26 | 中国电子科技集团公司第五十八研究所 | 基于有源光学水印的硬件木马检测方法 |
| US9460742B1 (en) | 2015-05-13 | 2016-10-04 | Seagate Technology Llc | Selecting servo controller based on predicted position error signal spectrum |
| US10672431B2 (en) | 2018-10-10 | 2020-06-02 | International Business Machines Corporation | Damping layers for mitigation of motor-induced disturbances applied to a tape reel |
| CN114268087B (zh) * | 2021-12-14 | 2023-12-01 | 北京航天测控技术有限公司 | 一种供电模块及供电方法 |
| CN119375643B (zh) * | 2024-12-30 | 2025-03-28 | 南京浦镇海通铁路设备有限公司 | 一种绝缘检测功能的检测方法及系统 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1277202A1 (ru) * | 1985-04-09 | 1986-12-15 | Войсковая часть 13991 | Устройство дл воспроизведени с носител магнитной записи |
| US5093751A (en) * | 1990-03-21 | 1992-03-03 | Hitachi Electronics Engineering Co., Ltd. | Carry noise measuring system for magnetic recording medium |
| US5663847A (en) * | 1995-03-27 | 1997-09-02 | Abramovitch; Daniel Y. | Rejection of disturbances on a disk drive by use of an accelerometer |
-
1997
- 1997-05-30 US US08/866,367 patent/US5909661A/en not_active Expired - Lifetime
-
1998
- 1998-05-28 JP JP10147474A patent/JPH1172520A/ja active Pending
- 1998-05-28 DE DE69818345T patent/DE69818345T2/de not_active Expired - Fee Related
- 1998-05-28 EP EP98304213A patent/EP0881626B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US5909661A (en) | 1999-06-01 |
| JPH1172520A (ja) | 1999-03-16 |
| EP0881626A1 (en) | 1998-12-02 |
| DE69818345D1 (de) | 2003-10-30 |
| EP0881626B1 (en) | 2003-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69818345T2 (de) | Rauschmessung in Datenspeichergeräten | |
| Abramovitch et al. | An overview of the PES Pareto Method for decomposing baseline noise sources in hard disk position error signals | |
| Vold et al. | High resolution order tracking at extreme slew rates, using Kalman tracking filters | |
| DE69028829T2 (de) | Filtersystem mit mehreren kanälen | |
| DE3787428T2 (de) | Verfahren zur Messung des Abstandes eines Gleitkopfes von einer Magnetplatte einer Platteneinheit. | |
| Lamarque et al. | Damping identification in multi-degree-of-freedom systems via a wavelet-logarithmic decrement—Part 1: Theory | |
| DE69122326T2 (de) | Magnetisches Speichersystem und Betriebsweise | |
| DE112018004627B4 (de) | Konfigurationen hybrider servomuster für ein magnetband | |
| DE69507579T2 (de) | Radiale sich selbst fortpflanzende Mustererzeugung für die Servosignalaufzeichnung auf einer Speicherplatte | |
| DE68919624T2 (de) | Digitale Servosteuerung für Plattenspeicher. | |
| DE102014006525B4 (de) | Motorsteuervorrichtung zum Unterdrücken von Eigenschwingungen | |
| DE69328593T2 (de) | Optisches Speichermedium | |
| DE2608249A1 (de) | Verfahren und vorrichtung zum messen von uebertragungsfunktionen | |
| Abramovitch et al. | The PES Pareto Method: Uncovering the strata of position error signals in disk drives | |
| DE3885045T3 (de) | System zur Wiedergabe mit hoher Geschwindigkeit für digitale Platten. | |
| DE102019103803A1 (de) | Erfassungsverstärker für Gyroskope und verwandte Systeme und Verfahren | |
| EP1941285B1 (de) | Verfahren zum erzeugen eines datensatzes und feldgerät sowie system zum erfassen der elektroenergiequalität eines energieversorgungsnetzes | |
| EP0048937A1 (de) | Schaltungsanordnung zum Lesen von auf einem magnetischen Aufzeichnungsmedium aufgezeichneten Daten | |
| Ivanov et al. | Optimal filtering of synchronized current phasor measurements in a steady state | |
| DE69124965T2 (de) | Schaltung zur taktrückgewinnung | |
| DE68925169T2 (de) | Analog-Digitalwandler | |
| Tselentis et al. | Geoelectric variations related to earthquakes observed during a 3‐year independent investigation | |
| EP1062730B1 (de) | Vorrichtung zur signalverarbeitung von zeitdiskreten werten | |
| DE2827420A1 (de) | Schaltungsanordnung zur regelung der frequenzbandbreite einer differenzierschaltung | |
| DE2920912A1 (de) | Azimutkorrektur von kopfspalten |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |