HUP9902173A2 - Készülék írás előkompenzálására mágneses adathordozóra történő felvételhez - Google Patents
Készülék írás előkompenzálására mágneses adathordozóra történő felvételhezInfo
- Publication number
- HUP9902173A2 HUP9902173A2 HU9902173A HUP9902173A HUP9902173A2 HU P9902173 A2 HUP9902173 A2 HU P9902173A2 HU 9902173 A HU9902173 A HU 9902173A HU P9902173 A HUP9902173 A HU P9902173A HU P9902173 A2 HUP9902173 A2 HU P9902173A2
- Authority
- HU
- Hungary
- Prior art keywords
- output signal
- signal
- data
- magnetic media
- integrator
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000003111 delayed effect Effects 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/09—Digital recording
-
- 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
- G11B20/10009—Improvement or modification of read or write signals
- G11B20/10046—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter
- G11B20/10212—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter compensation for data shift, e.g. pulse-crowding effects
-
- 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
- G11B20/10009—Improvement or modification of read or write signals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Digital Magnetic Recording (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
A találmány tárgya készülék írás előkőmpenzálására mágnesesadathőrdőzóra történő felvételhez. A készülék tartalmaz egy integráló-határőló áramkört (31), amely veszi a bemenő adatjeleket és amely azadatjelekkel szinkrőnban lévő kimenőjelet szőlgáltat, aminek azamplitűdója az idő függvényében lényegében lineárisan váltőzik, és azamplitűdó egy adatjelkép-intervallűmőn belül van kőrlátőzva, egyállítható szűrőt (30), amely veszi a bemenőjeleket és egy kimenőjeletszőlgáltat, amelyeknek a pillanatnyi értékei az adatjelben bekövetkezőelőző és/vagy jövőbeli jelátmenetek spektrűmától függenek, és egyösszehasőnlító áramkört (32), amely az integráló-határőló áramkör (31)kimenőjelének és a szűrő (30) kimenőjelének összehasőnlítása révénelőállítja a kimenőjelet, amelyben a bemenő adatjelnek legalább néhányjelátvitele időben eltőlható. ŕ
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96202427 | 1996-09-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
HUP9902173A2 true HUP9902173A2 (hu) | 1999-11-29 |
HUP9902173A3 HUP9902173A3 (en) | 2000-03-28 |
Family
ID=8224334
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HU9902173A HUP9902173A3 (en) | 1996-09-02 | 1997-07-07 | Device for write compensation in magnetic media recording |
Country Status (10)
Country | Link |
---|---|
US (1) | US6091558A (hu) |
EP (1) | EP0868724B1 (hu) |
JP (1) | JPH11514784A (hu) |
KR (1) | KR100462533B1 (hu) |
CN (1) | CN1118816C (hu) |
AT (1) | ATE232640T1 (hu) |
DE (1) | DE69719009T2 (hu) |
HU (1) | HUP9902173A3 (hu) |
TW (1) | TW369648B (hu) |
WO (1) | WO1998010420A1 (hu) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6288859B1 (en) | 1997-08-12 | 2001-09-11 | U.S. Philips Corporation | Device for write compensation in magnetic-media recording |
KR100616000B1 (ko) * | 1998-02-26 | 2006-08-28 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 자기매체 기록시의 기록 보상용 장치 |
DE69819919D1 (de) | 1998-12-15 | 2003-12-24 | St Microelectronics Srl | Verfahren und Vorrichtung zum Verzögern definierter Übergänge in einem digitalen Datenstrom |
US6404572B1 (en) * | 1999-05-05 | 2002-06-11 | Texas Instruments Incorporated | Circuit and method for generating a write precompensation signal |
US6512646B1 (en) | 1999-10-20 | 2003-01-28 | Agere Systems Inc. | Impedance-matched write circuit |
US6760171B2 (en) * | 2001-03-23 | 2004-07-06 | Guzik Technical Enterprises | Magnetic medium precompensation method and apparatus |
US7006313B2 (en) | 2002-06-25 | 2006-02-28 | Texas Instruments Incorporated | Circuit and method to match common mode flex impedance and to achieve symmetrical switching voltage outputs of write driver |
US7002764B2 (en) | 2004-02-26 | 2006-02-21 | Hitachi Global Storage Technologies Netherlands B.V. | Method and apparatus for providing generalized write pre-compensation |
US7123429B2 (en) * | 2004-02-26 | 2006-10-17 | Hitachi Global Storage Technologies Netherlands B.V. | Method and apparatus for providing write pre-compensation using a read timing path |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5987610A (ja) * | 1982-11-10 | 1984-05-21 | Fujitsu Ltd | 書込デ−タのプリシフト回路 |
US4964107A (en) * | 1990-03-14 | 1990-10-16 | International Business Machines Corporation | Relative timing precompensation of high-speed pulse signals for digital magnetic recoding |
US5325241A (en) * | 1991-06-14 | 1994-06-28 | Fujitsu Limited | Write precompensation with frequency synthesizer |
US5381359A (en) * | 1992-08-27 | 1995-01-10 | Quantum Corporation | Adaptation and training of digital finite impulse response filter within PRML sampling data detection channel |
US5426541A (en) * | 1994-03-31 | 1995-06-20 | International Business Machines Corporation | Self-equalization method for partial-response maximum-likelihood disk drive systems |
US5517146A (en) * | 1994-04-18 | 1996-05-14 | Silicon Systems, Inc. | Write precompensation circuit for compensating nonlinear magnetic effects in a recording channel |
US5493454A (en) * | 1994-10-04 | 1996-02-20 | Quantum Corporation | Write precompensation optimization in a PRML channel using a selected PRML signal level |
US5734680A (en) * | 1995-08-09 | 1998-03-31 | Hewlett-Packard Co. | Analog implementation of a partial response maximum likelihood (PRML) read channel |
US5870431A (en) * | 1996-06-27 | 1999-02-09 | Qualcomm Incorporated | ROM-based finite impulse response filter for use in mobile telephone |
-
1997
- 1997-04-30 TW TW086105729A patent/TW369648B/zh active
- 1997-07-07 DE DE69719009T patent/DE69719009T2/de not_active Expired - Lifetime
- 1997-07-07 AT AT97927328T patent/ATE232640T1/de not_active IP Right Cessation
- 1997-07-07 KR KR10-1998-0703257A patent/KR100462533B1/ko not_active IP Right Cessation
- 1997-07-07 HU HU9902173A patent/HUP9902173A3/hu unknown
- 1997-07-07 CN CN97191164A patent/CN1118816C/zh not_active Expired - Lifetime
- 1997-07-07 EP EP97927328A patent/EP0868724B1/en not_active Expired - Lifetime
- 1997-07-07 WO PCT/IB1997/000840 patent/WO1998010420A1/en active IP Right Grant
- 1997-07-07 JP JP10512401A patent/JPH11514784A/ja active Pending
- 1997-08-12 US US08/909,919 patent/US6091558A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0868724A1 (en) | 1998-10-07 |
DE69719009D1 (de) | 2003-03-20 |
CN1118816C (zh) | 2003-08-20 |
CN1199491A (zh) | 1998-11-18 |
TW369648B (en) | 1999-09-11 |
HUP9902173A3 (en) | 2000-03-28 |
WO1998010420A1 (en) | 1998-03-12 |
KR20000064319A (ko) | 2000-11-06 |
KR100462533B1 (ko) | 2005-04-19 |
DE69719009T2 (de) | 2003-11-06 |
EP0868724B1 (en) | 2003-02-12 |
ATE232640T1 (de) | 2003-02-15 |
US6091558A (en) | 2000-07-18 |
JPH11514784A (ja) | 1999-12-14 |
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