ES2141734T3 - Metodo de modulacion y metodo de desmodulacion asi como aparato de modulacion y aparato de desmodulacion. - Google Patents
Metodo de modulacion y metodo de desmodulacion asi como aparato de modulacion y aparato de desmodulacion.Info
- Publication number
- ES2141734T3 ES2141734T3 ES93103877T ES93103877T ES2141734T3 ES 2141734 T3 ES2141734 T3 ES 2141734T3 ES 93103877 T ES93103877 T ES 93103877T ES 93103877 T ES93103877 T ES 93103877T ES 2141734 T3 ES2141734 T3 ES 2141734T3
- Authority
- ES
- Spain
- Prior art keywords
- code
- digital data
- length
- demodulation
- modulation
- 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 - Lifetime
Links
Classifications
-
- 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
-
- 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
- G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
- G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Radar Systems Or Details Thereof (AREA)
- Amplitude Modulation (AREA)
- Burglar Alarm Systems (AREA)
Abstract
SE PRESENTAN UN METODO Y UN APARATO DE MODULACION Y UN METODO Y UN APARATO DE DEMODULACION CON LOS QUE SE PUEDE CONSEGUIR UN CODIGO DE LONGITUD VARIABLE (D, K;M, N;R) QUE PUEDA APORTAR UNA MAYOR DISTANCIA DE INVERSION MINIMA PARA PERMITIR UNA GRABACION A UNA DENSIDAD MAS ALTA QUE NUNCA. SEGUN EL METODO Y EL APARATO DE MODULACION, LOS DATOS DIGITALES CON UNA LONGITUD DE DATOS BASICA DE M BITS SE MODULAN A UN CODIGO DE LONGITUD VARIABLE (D, K;M, N;R) CON UNA LONGITUD DE CODIGO BASICA DE N BITS Y DONDE LA DISTANCIA ENTRE LOS DATOS DIGITALES ADYACENTES SE REPRESENTA POR UNA T, SIENDO LA DISTANCIA DE INVERSION MINIMA (TMIN) DEL CODIGO DE LONGITUD VARIABLE IGUAL O MAYOR QUE 2,0T Y LA LONGITUD MINIMA DE UNA PASADA DE UN MISMO SIMBOLO IGUAL O MAYOR QUE 4. EL APARATO DE DEMODULACION VUELVE A DEMODULAR LOS DATOS DIGITALES AL CODIGO DE LONGITUD VARIABLE Y CONSTA DE UNOS ELEMENTOS DE ALMACENAMIENTO (23) EN LOS QUE SE ALMACENAN UNA PLURALIDAD DE TABLAS PARA CONVERTIR LOS DATOS DIGITALES EN EL CODIGO DELONGITUD VARIABLE, UNOS ELEMENTOS DE DISCRIMINACION (21) PARA DISCRIMINAR LA LONGITUD DE UNION DE LOS DATOS DIGITALES Y UNOS ELEMENTOS DE SELECCION (22) PARA SELECCIONAR UNA DE LAS TABLAS SEGUN EL RESULTADO DE LA DISCRIMINACION LLEVADA A CABO POR LOS ELEMENTOS DE DISCRIMINACION (21).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP08640492A JP3318873B2 (ja) | 1992-03-10 | 1992-03-10 | 符号化装置および復号化装置 |
JP15442592A JP3187528B2 (ja) | 1992-05-21 | 1992-05-21 | 符号化装置および復号化装置 |
JP04157559A JP3134500B2 (ja) | 1992-05-25 | 1992-05-25 | 符号化方法ならびに符号化装置および復号化装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2141734T3 true ES2141734T3 (es) | 2000-04-01 |
Family
ID=27305170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES93103877T Expired - Lifetime ES2141734T3 (es) | 1992-03-10 | 1993-03-10 | Metodo de modulacion y metodo de desmodulacion asi como aparato de modulacion y aparato de desmodulacion. |
Country Status (10)
Country | Link |
---|---|
US (1) | US5400023A (es) |
EP (2) | EP0560339B1 (es) |
CN (2) | CN1053986C (es) |
AT (1) | ATE189568T1 (es) |
AU (1) | AU666166B2 (es) |
CA (1) | CA2091208A1 (es) |
DE (1) | DE69327740T2 (es) |
ES (1) | ES2141734T3 (es) |
MY (1) | MY109328A (es) |
TW (1) | TW219416B (es) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3427392B2 (ja) * | 1992-05-25 | 2003-07-14 | ソニー株式会社 | 符号化方法 |
JP3428039B2 (ja) * | 1992-06-30 | 2003-07-22 | ソニー株式会社 | 同期信号検出器、同期信号検出方法及び復号化装置 |
JP3127655B2 (ja) * | 1993-03-22 | 2001-01-29 | ソニー株式会社 | 変調装置及び復調装置 |
JPH0730431A (ja) * | 1993-04-02 | 1995-01-31 | Toshiba Corp | データ変復調方式および変復調装置 |
CA2182584A1 (en) * | 1994-12-12 | 1996-06-20 | Yoshihide Shimpuku | Data encoding method and data decoding method |
KR0155824B1 (ko) * | 1995-05-29 | 1998-12-15 | 김광호 | 디지탈신호 기록장치 |
KR0183722B1 (ko) * | 1995-07-20 | 1999-04-15 | 김광호 | 디지탈 신호 변조부호기 및 복호기 |
US5999570A (en) * | 1995-11-21 | 1999-12-07 | Sony Corporation | Transmission apparatus, sending apparatus, and receiving apparatus, and transmission method |
JP3184083B2 (ja) * | 1995-12-15 | 2001-07-09 | 日本電気株式会社 | チャネル多重分離方法およびチャネル多重分離装置 |
KR100219608B1 (ko) * | 1996-07-23 | 1999-10-01 | 윤종용 | 디지탈 기록 미디어와 디지탈 통신등의 디지탈 채널에 채택되는 신호변조방법 |
US5781133A (en) * | 1996-08-05 | 1998-07-14 | Seagate Technology, Inc. | Method and apparatus for implementing run length limited codes |
EP0827310A3 (en) * | 1996-08-30 | 2001-01-24 | Sony Corporation | Infra-red transmission of digital audio signals |
JP3539091B2 (ja) * | 1996-10-11 | 2004-06-14 | ソニー株式会社 | データ復号方法及びデータ復号装置 |
US6091347A (en) * | 1997-05-23 | 2000-07-18 | Sony Corporation | Device and method for modulation and transmission medium |
JP3760961B2 (ja) * | 1997-09-11 | 2006-03-29 | ソニー株式会社 | 変調装置および変調方法、復調装置および復調方法、並びに記録媒体 |
JP3716421B2 (ja) * | 1997-09-19 | 2005-11-16 | ソニー株式会社 | 復調装置および復調方法 |
JP3722331B2 (ja) | 1997-12-12 | 2005-11-30 | ソニー株式会社 | 変調装置および方法、並びに記録媒体 |
JP3870573B2 (ja) * | 1998-08-24 | 2007-01-17 | ソニー株式会社 | 変調装置および方法、記録媒体、並びに復調装置および方法 |
US7295554B1 (en) * | 1999-03-12 | 2007-11-13 | Lucent Technologies Inc. | Word Multiplexing of encoded signals into a higher bit rate serial data stream |
KR100565046B1 (ko) * | 1999-04-21 | 2006-03-30 | 삼성전자주식회사 | 개선된 dc 억압 능력을 갖는 rll 코드 배치 방법, 변복조 방법 및 복조 장치 |
JP2003317401A (ja) * | 2002-04-25 | 2003-11-07 | Sanyo Electric Co Ltd | データ記録制御装置 |
JP4141175B2 (ja) * | 2002-05-14 | 2008-08-27 | ソニー株式会社 | データ記録媒体、データ記録方法および装置 |
US7212483B2 (en) * | 2002-09-25 | 2007-05-01 | Victor Company Of Japan, Limited | Modulation device, modulation method and recording medium |
CN101046961B (zh) * | 2006-03-31 | 2011-10-12 | 北京希格玛和芯微电子技术有限公司 | 一种基于波形的语音压缩、解压缩方法及电路 |
JP2014229955A (ja) * | 2013-05-20 | 2014-12-08 | 株式会社日立エルジーデータストレージ | 変調復調方法、復調装置及び符号変調方法 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4146909A (en) * | 1977-11-21 | 1979-03-27 | International Business Machines Corporation | Sync pattern encoding system for run-length limited codes |
JPS5665313A (en) * | 1979-10-29 | 1981-06-03 | Sony Corp | Data converting circuit |
US4463344A (en) * | 1981-12-31 | 1984-07-31 | International Business Machines Corporation | Method and apparatus for generating a noiseless sliding block code for a (2,7) channel with rate 1/2 |
DE3602808A1 (de) * | 1986-01-30 | 1987-08-06 | Siemens Ag | Codiereinrichtung fuer variable wortlaengen |
DE3825960A1 (de) * | 1987-09-01 | 1989-03-16 | Hitachi Ltd | Verfahren und vorrichtung zur digitalen informationscodierung |
FR2627337B1 (fr) * | 1988-02-17 | 1990-06-08 | Thomson Csf | Procede de codage et procede de decodage a longueur variable, dispositif de codage et dispositif de decodage pour la mise en oeuvre de ce proced |
US4985700A (en) * | 1988-03-01 | 1991-01-15 | Canon Kabushiki Kaisha | Variable-length coding/decoding device |
JPH03145223A (ja) * | 1989-10-30 | 1991-06-20 | Toshiba Corp | 可変長符号復調装置 |
DE69111633T2 (de) * | 1990-01-30 | 1996-04-04 | Philips Electronics Nv | Vorrichtungen zur variablen Längen-Kodierung und Dekodierung von digitalen Daten. |
US5034742A (en) * | 1990-06-19 | 1991-07-23 | The United States Of America As Represented By The Secretary Of The Navy | Message compression encoder and encoding method for a communication channel |
US5138314A (en) * | 1990-07-18 | 1992-08-11 | Sony Corporation | Method for converting and/or detecting data |
JPH0479421A (ja) * | 1990-07-18 | 1992-03-12 | Toshiba Corp | 可変長符号化装置および可変長復号化装置 |
US5173694A (en) * | 1990-10-29 | 1992-12-22 | International Business Machines Corporation | Binary data encoding and decoding using a rate 2/5 (2,18,2) code |
-
1993
- 1993-02-18 TW TW082101141A patent/TW219416B/zh not_active IP Right Cessation
- 1993-03-08 CA CA002091208A patent/CA2091208A1/en not_active Abandoned
- 1993-03-09 MY MYPI93000422A patent/MY109328A/en unknown
- 1993-03-09 AU AU34083/93A patent/AU666166B2/en not_active Expired
- 1993-03-10 EP EP93103877A patent/EP0560339B1/en not_active Expired - Lifetime
- 1993-03-10 CN CN93104490A patent/CN1053986C/zh not_active Expired - Lifetime
- 1993-03-10 ES ES93103877T patent/ES2141734T3/es not_active Expired - Lifetime
- 1993-03-10 US US08/029,133 patent/US5400023A/en not_active Expired - Lifetime
- 1993-03-10 AT AT93103877T patent/ATE189568T1/de active
- 1993-03-10 EP EP98109247A patent/EP0875998A3/en not_active Withdrawn
- 1993-03-10 DE DE69327740T patent/DE69327740T2/de not_active Expired - Lifetime
-
1999
- 1999-09-24 CN CN99120261.9A patent/CN1255702A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
EP0875998A2 (en) | 1998-11-04 |
EP0560339A1 (en) | 1993-09-15 |
CN1255702A (zh) | 2000-06-07 |
CA2091208A1 (en) | 1993-09-11 |
AU666166B2 (en) | 1996-02-01 |
TW219416B (es) | 1994-01-21 |
DE69327740T2 (de) | 2000-06-08 |
EP0875998A3 (en) | 1999-01-07 |
MY109328A (en) | 1997-01-31 |
ATE189568T1 (de) | 2000-02-15 |
US5400023A (en) | 1995-03-21 |
CN1053986C (zh) | 2000-06-28 |
EP0560339B1 (en) | 2000-02-02 |
DE69327740D1 (de) | 2000-03-09 |
CN1081014A (zh) | 1994-01-19 |
AU3408393A (en) | 1993-09-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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