SG63808A1 - Digital magnetic recording and reproducing apparatus - Google Patents
Digital magnetic recording and reproducing apparatusInfo
- Publication number
- SG63808A1 SG63808A1 SG1998000211A SG1998000211A SG63808A1 SG 63808 A1 SG63808 A1 SG 63808A1 SG 1998000211 A SG1998000211 A SG 1998000211A SG 1998000211 A SG1998000211 A SG 1998000211A SG 63808 A1 SG63808 A1 SG 63808A1
- Authority
- SG
- Singapore
- Prior art keywords
- magnetic recording
- reproducing apparatus
- digital magnetic
- digital
- reproducing
- Prior art date
Links
Classifications
-
- 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
- G11B20/10268—Improvement or modification of read or write signals bit detection or demodulation methods
- G11B20/10287—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors
- G11B20/10296—Improvement or modification of read or write signals bit detection or demodulation methods using probabilistic methods, e.g. maximum likelihood detectors using the Viterbi algorithm
-
- 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
- G11B20/10064—EEPR4 or E2PR4, i.e. extended partial response class 4, polynomial (1-D)*(1+D)3
-
- 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
- G11B20/10074—EPR4, i.e. extended partial response class 4, polynomial (1-D) *(1+D)2
-
- 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
- G11B20/10175—PR4, PR(1,0,-1), i.e. partial response class 4, polynomial (1+D)(1-D)=(1-D2)
-
- 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1816—Testing
- G11B2020/1823—Testing wherein a flag is set when errors are detected or qualified
-
- 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
- G11B2020/1836—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information using a Reed Solomon [RS] code
-
- 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
- G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
- G11B20/1833—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information
- G11B2020/1863—Error detection or correction; Testing, e.g. of drop-outs by adding special lists or symbols to the coded information wherein the Viterbi algorithm is used for decoding the error correcting code
-
- 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
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2516—Hard disks
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9018237A JPH10214461A (en) | 1997-01-31 | 1997-01-31 | Digital magnetic recording/reproducing circuit and device using the circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
SG63808A1 true SG63808A1 (en) | 1999-03-30 |
Family
ID=11966081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG1998000211A SG63808A1 (en) | 1997-01-31 | 1998-01-27 | Digital magnetic recording and reproducing apparatus |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPH10214461A (en) |
KR (1) | KR19980070857A (en) |
SG (1) | SG63808A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3486141B2 (en) * | 1999-10-01 | 2004-01-13 | 松下電器産業株式会社 | Digital playback signal processor |
US7804755B2 (en) | 2003-11-11 | 2010-09-28 | Samsung Electronics Co., Ltd. | Method for determining characteristics of signal and apparatus using the same |
KR101044939B1 (en) * | 2003-11-11 | 2011-06-28 | 삼성전자주식회사 | Apparatus and method for determining characteristics of signal |
-
1997
- 1997-01-31 JP JP9018237A patent/JPH10214461A/en active Pending
-
1998
- 1998-01-26 KR KR1019980002307A patent/KR19980070857A/en not_active Application Discontinuation
- 1998-01-27 SG SG1998000211A patent/SG63808A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
JPH10214461A (en) | 1998-08-11 |
KR19980070857A (en) | 1998-10-26 |
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