HK90095A - Data coding for fast start-up of PRML receivers - Google Patents
Data coding for fast start-up of PRML receiversInfo
- Publication number
- HK90095A HK90095A HK90095A HK90095A HK90095A HK 90095 A HK90095 A HK 90095A HK 90095 A HK90095 A HK 90095A HK 90095 A HK90095 A HK 90095A HK 90095 A HK90095 A HK 90095A
- Authority
- HK
- Hong Kong
- Prior art keywords
- prml
- receivers
- data coding
- fast start
- fast
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
-
- 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
- G11B20/10055—Improvement or modification of read or write signals filtering or equalising, e.g. setting the tap weights of an FIR filter using partial response filtering when writing the signal to the medium or reading it therefrom
-
- 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
- G11B20/14—Digital recording or reproducing using self-clocking codes
- G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M5/00—Conversion of the form of the representation of individual digits
- H03M5/02—Conversion to or from representation by pulses
- H03M5/04—Conversion to or from representation by pulses the pulses having two levels
- H03M5/14—Code representation, e.g. transition, for a given bit cell depending on the information in one or more adjacent bit cells, e.g. delay modulation code, double density code
- H03M5/145—Conversion to or from block codes or representations thereof
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Error Detection And Correction (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP89810607A EP0413076B1 (en) | 1989-08-16 | 1989-08-16 | Data coding for fast start-up of PRML receivers |
Publications (1)
Publication Number | Publication Date |
---|---|
HK90095A true HK90095A (en) | 1995-06-16 |
Family
ID=8203173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK90095A HK90095A (en) | 1989-08-16 | 1995-06-08 | Data coding for fast start-up of PRML receivers |
Country Status (7)
Country | Link |
---|---|
US (1) | US5241309A (xx) |
EP (1) | EP0413076B1 (xx) |
JP (1) | JPH0724382B2 (xx) |
KR (1) | KR940007546B1 (xx) |
BR (1) | BR9004029A (xx) |
DE (1) | DE68920739T2 (xx) |
HK (1) | HK90095A (xx) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0505657A1 (en) * | 1991-03-27 | 1992-09-30 | International Business Machines Corporation | Preamble recognition and synchronization detection in partial-response systems |
US5196849A (en) * | 1992-01-31 | 1993-03-23 | International Business Machines Corporation | Method and apparatus for implementing PRML codes with maximum ones |
US5424881A (en) | 1993-02-01 | 1995-06-13 | Cirrus Logic, Inc. | Synchronous read channel |
US5544178A (en) * | 1994-06-10 | 1996-08-06 | Cirrus Logic, Inc. | Method and apparatus for encoding data in a PRML class-IV digital communication channel |
US5576906A (en) * | 1994-10-11 | 1996-11-19 | Quantum Corporation | Synchronous detection of concurrent servo bursts for fine head position in disk drive |
JPH08288850A (ja) * | 1995-04-14 | 1996-11-01 | Nec Corp | 符号化変調方式および検出方式 |
CN1331148C (zh) * | 1995-09-01 | 2007-08-08 | 皇家菲利浦电子有限公司 | 记录载体 |
US5808573A (en) * | 1996-08-01 | 1998-09-15 | Nec Electronics Incorporated | Methods and structure for sampled-data timing recovery with reduced complexity and latency |
US5949820A (en) * | 1996-08-01 | 1999-09-07 | Nec Electronics Inc. | Method for optimizing an equalization and receive filter |
US5790057A (en) * | 1996-08-12 | 1998-08-04 | Lanart Corporation | Method of and system for the efficient encoding of data |
KR100408532B1 (ko) * | 1996-10-31 | 2004-01-24 | 삼성전자주식회사 | 데이타저장기기의prml코드생성방법 |
US5914989A (en) * | 1997-02-19 | 1999-06-22 | Nec Electronics, Inc. | PRML system with reduced complexity maximum likelihood detector |
US6089749A (en) * | 1997-07-08 | 2000-07-18 | International Business Machines Corporation | Byte synchronization system and method using an error correcting code |
US6158027A (en) * | 1998-08-31 | 2000-12-05 | International Business Machines Corporation | Enhanced noise-predictive maximum likelihood (NPML) data detection method and apparatus for direct access storage device (DASD) |
US6460150B1 (en) * | 2000-03-02 | 2002-10-01 | International Business Machines Corporation | Noise-predictive post-processing for PRML data channel |
US7133523B2 (en) * | 2002-12-20 | 2006-11-07 | Pitney Bowes Inc. | Method and system for solving the word problem in braid group cryptosystems |
US7388938B2 (en) * | 2004-05-28 | 2008-06-17 | Hitachi Global Storage Technologies-Netherlands B.V. | Method for bit-byte synchronization in sampling a data string |
US7030789B1 (en) | 2004-12-01 | 2006-04-18 | Hitachi Global Storage Technologies Netherlands B.V. | Techniques for applying modulation constraints to data using periodically changing symbol mappings |
US7064687B1 (en) | 2005-01-31 | 2006-06-20 | Hitachi Global Storage Technologies Netherlands B.V. | Techniques for modulating data using short block encoders |
US7071851B1 (en) | 2005-01-31 | 2006-07-04 | Hitachi Global Storage Technologies Netherlands B.V. | Techniques for implementing non-uniform constraints in modulation encoded data |
US7142134B2 (en) * | 2005-02-01 | 2006-11-28 | Hitachi Global Storage Technologies Netherlands B.V. | Techniques for generating modulation codes using running substitutions |
US7126502B2 (en) * | 2005-02-01 | 2006-10-24 | Hitachi Global Storage Technologies Netherlands B.V. | Techniques for using interleaved encoders to obtain modulation constraints |
US7486208B2 (en) * | 2007-05-16 | 2009-02-03 | International Business Machines Corporation | High-rate RLL encoding |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4644564A (en) * | 1983-08-05 | 1987-02-17 | International Business Machines Corporation | Decoding the output signal of a partial-response class-IV communication or recording device channel |
JPS6048645A (ja) * | 1983-08-29 | 1985-03-16 | Sony Corp | 情報変換装置 |
JPH0721942B2 (ja) * | 1984-10-11 | 1995-03-08 | ソニー株式会社 | チヤンネル符号化方法 |
US4707681A (en) * | 1986-04-24 | 1987-11-17 | International Business Machines Corporation | Method and apparatus for implementing optimum PRML codes |
US5040191A (en) * | 1987-02-24 | 1991-08-13 | Codex Corporation | Partial response channel signaling systems |
US4786890A (en) * | 1987-07-28 | 1988-11-22 | International Business Machines Corporation | Method and apparatus for implementing a PRML code |
EP0316459B1 (en) * | 1987-11-13 | 1992-04-22 | International Business Machines Corporation | Fast timing acquisition for partial-response signalling |
NL8702905A (nl) * | 1987-12-03 | 1989-07-03 | Philips Nv | Werkwijze en inrichting voor het optekenen van informatie, een registratiedrager, een inrichting voor het uitlezen van de opgetekende informatie, alsmede een codeer- en decodeerschakeling voor toepassing in de opteken- en uitleesinrichting. |
US4870414A (en) * | 1988-03-18 | 1989-09-26 | International Business Machines Corporation | Even mark modulation coding method |
US5001482A (en) * | 1990-06-11 | 1991-03-19 | International Business Machines Corporation | BiCMOS digital-to-analog converter for disk drive digital recording channel architecture |
-
1989
- 1989-08-16 EP EP89810607A patent/EP0413076B1/en not_active Expired - Lifetime
- 1989-08-16 DE DE68920739T patent/DE68920739T2/de not_active Expired - Fee Related
-
1990
- 1990-07-31 KR KR1019900011836A patent/KR940007546B1/ko not_active IP Right Cessation
- 1990-08-10 US US07/565,542 patent/US5241309A/en not_active Expired - Lifetime
- 1990-08-15 BR BR909004029A patent/BR9004029A/pt not_active Application Discontinuation
- 1990-08-16 JP JP2215140A patent/JPH0724382B2/ja not_active Expired - Fee Related
-
1995
- 1995-06-08 HK HK90095A patent/HK90095A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH03102920A (ja) | 1991-04-30 |
US5241309A (en) | 1993-08-31 |
KR910005588A (ko) | 1991-03-30 |
DE68920739D1 (de) | 1995-03-02 |
BR9004029A (pt) | 1991-09-03 |
JPH0724382B2 (ja) | 1995-03-15 |
EP0413076B1 (en) | 1995-01-18 |
EP0413076A1 (en) | 1991-02-20 |
DE68920739T2 (de) | 1995-06-29 |
KR940007546B1 (ko) | 1994-08-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PF | Patent in force | ||
PE | Patent expired |
Effective date: 20090815 |