FR2345018A1 - Appareil et procede de codage sans courant continu pour systeme de transmission de donnees - Google Patents

Appareil et procede de codage sans courant continu pour systeme de transmission de donnees

Info

Publication number
FR2345018A1
FR2345018A1 FR7707949A FR7707949A FR2345018A1 FR 2345018 A1 FR2345018 A1 FR 2345018A1 FR 7707949 A FR7707949 A FR 7707949A FR 7707949 A FR7707949 A FR 7707949A FR 2345018 A1 FR2345018 A1 FR 2345018A1
Authority
FR
France
Prior art keywords
coding
data transmission
direct current
transmission system
direct
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.)
Granted
Application number
FR7707949A
Other languages
English (en)
Other versions
FR2345018B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ampex Corp
Original Assignee
Ampex Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ampex Corp filed Critical Ampex Corp
Publication of FR2345018A1 publication Critical patent/FR2345018A1/fr
Application granted granted Critical
Publication of FR2345018B1 publication Critical patent/FR2345018B1/fr
Granted legal-status Critical Current

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
    • G11B20/14—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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4904—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using self-synchronising codes, e.g. split-phase codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Dc Digital Transmission (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Communication Control (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
FR7707949A 1976-03-19 1977-03-17 Appareil et procede de codage sans courant continu pour systeme de transmission de donnees Granted FR2345018A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/668,679 US4027335A (en) 1976-03-19 1976-03-19 DC free encoding for data transmission system

Publications (2)

Publication Number Publication Date
FR2345018A1 true FR2345018A1 (fr) 1977-10-14
FR2345018B1 FR2345018B1 (fr) 1981-07-17

Family

ID=24683321

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7707949A Granted FR2345018A1 (fr) 1976-03-19 1977-03-17 Appareil et procede de codage sans courant continu pour systeme de transmission de donnees

Country Status (11)

Country Link
US (1) US4027335A (fr)
JP (2) JPS52114206A (fr)
AT (1) AT389195B (fr)
BE (1) BE852627A (fr)
CA (4) CA1085000A (fr)
DE (1) DE2711526C2 (fr)
FR (1) FR2345018A1 (fr)
GB (1) GB1578635A (fr)
IT (1) IT1086565B (fr)
NL (1) NL190041C (fr)
NO (1) NO154179C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2484739A1 (fr) * 1980-06-16 1981-12-18 Philips Nv Procede pour le codage de bits de donnees sur un porteur d'enregistrement, dispositif pour l'execution du procede et porteur d'enregistrement pourvu d'une structure d'information
FR2484738A1 (fr) * 1980-06-16 1981-12-18 Philips Nv Procede pour le codage de bits de donnees sur un porteur d'enregistrement, dispositif pour la mise en oeuvre du procede, porteur d'enregistrement pourvu d'une structure d'information, et dispositif pour decoder le signal lu sur le porteur d'enregistrement
FR2531289A2 (fr) * 1976-03-19 1984-02-03 Ampex Appareil et procede de codage sans courant continu pour systeme de transmission de donnees

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027335A (en) * 1976-03-19 1977-05-31 Ampex Corporation DC free encoding for data transmission system
JPS5821322B2 (ja) * 1977-05-07 1983-04-28 株式会社富士通ゼネラル デジタル信号の変調方法
AU523034B2 (en) * 1977-11-04 1982-07-08 Discovision Associates Encoding and decoding digital data
US4234898A (en) * 1978-03-15 1980-11-18 Nippon Hoso Kyokai Digital magnetic recording and reproducing apparatus
US4167760A (en) * 1978-03-28 1979-09-11 Ampex Corporation Bi-phase decoder apparatus and method
DE2828219A1 (de) * 1978-06-28 1980-01-10 Bosch Gmbh Robert Verfahren zur aufzeichnung und wiedergabe digitaler daten auf magnetspeicher
US4234897A (en) * 1978-10-05 1980-11-18 Ampex Corporation DC Free encoding for data transmission
CA1140998A (fr) * 1978-10-05 1983-02-08 Jerry W. Miller Codage exempt de composante continue pour transmission de donnees avec preanalyse limitee
US4437086A (en) 1978-10-05 1984-03-13 Ampex Corporation Limited look-ahead means
DE2922082C2 (de) * 1979-05-31 1981-08-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren und Anordnung zur Übertragung einer Binärfolge
JPS5665311A (en) * 1979-10-27 1981-06-03 Nippon Telegr & Teleph Corp <Ntt> Magnetic recording and reproduction system for digital information
JPS5690407A (en) * 1979-12-20 1981-07-22 Sony Corp Encoding circuit
AU542859B2 (en) * 1979-12-28 1985-03-21 Sony Corporation Method for digital encoding/decoding
US4392159B1 (en) * 1980-02-01 1997-12-09 Ampex Method and apparatus for video signal processing
US4356518A (en) * 1980-02-01 1982-10-26 Ampex Corporation High frequency digital PCM decoding apparatus
JPS57132461A (en) * 1981-02-09 1982-08-16 Sony Corp Converter for binary data code
NL8201411A (nl) * 1982-04-02 1983-11-01 Philips Nv Werkwijze voor het optekenen van een digitaal informatiesignaal op een registratiedrager met een stralingsgevoelige informatielaag, een inrichting hiervoor en een optische registratiedrager voorzien van een dergelijk digitaal informatiesignaal.
JPS5875950A (ja) * 1981-10-31 1983-05-07 Sony Corp ２値データの伝送方法
US4547890A (en) * 1982-09-28 1985-10-15 Abraham M. Gindi Apparatus and method for forming d.c. free codes
US4649550A (en) * 1982-12-22 1987-03-10 Amoco Corporation Telemetry scheme with slope modulated signal
US4538257A (en) * 1982-12-23 1985-08-27 Xerox Corporation Adaptively stabilized recording for direct read after write optical memories
US4516248A (en) * 1983-01-21 1985-05-07 E-Systems, Inc. Variable threshold receiver
US4612653A (en) * 1983-01-21 1986-09-16 E-Systems, Inc. Delay modulation phase coding
JPS601956A (ja) * 1983-06-17 1985-01-08 Sony Corp デイジタルデ−タの変調方法
JPS61113172A (ja) * 1984-09-29 1986-05-31 Olympus Optical Co Ltd デ−タ復調装置
US4737970A (en) * 1985-06-06 1988-04-12 Rca Corporation Clock recovery using cavity resonator
US4617553A (en) * 1985-08-12 1986-10-14 Harris Corporation Enhanced Miller code
US4667337A (en) * 1985-08-28 1987-05-19 Westinghouse Electric Corp. Integrated circuit having outputs configured for reduced state changes
DE3533373A1 (de) * 1985-09-19 1987-03-26 Ant Nachrichtentech Verfahren zur taktrueckgewinnung
FR2589653B1 (fr) * 1985-11-05 1990-03-23 Lignes Telegraph Telephon Dispositif de mise en oeuvre d'un code a faible disparite accumulee en transmission numerique a haut debit et procede de codage utilisant un tel dispositif
US4864588A (en) * 1987-02-11 1989-09-05 Hillier Technologies Limited Partnership Remote control system, components and methods
US4775985A (en) * 1987-04-06 1988-10-04 Sony Corporation Method of dc-free 8/9 nrz coding using a unique sync word pattern
US4868853A (en) * 1987-04-15 1989-09-19 Hitachi, Ltd. Demodulation circuit for digital modulated signal
US4965575A (en) * 1988-10-07 1990-10-23 Eastman Kodak Company Data alignment circuit and method for self-clocking encoded data
JPH02156732A (ja) * 1988-12-09 1990-06-15 Hitachi Ltd 復調装置
US5023891A (en) * 1989-07-25 1991-06-11 Sf2 Corporation Method and circuit for decoding a Manchester code signal
US5805632A (en) * 1992-11-19 1998-09-08 Cirrus Logic, Inc. Bit rate doubler for serial data transmission or storage
US5916315A (en) * 1994-08-23 1999-06-29 Ampex Systems Corporation Viterbi detector for class II partial response equalized miller-squared signals
US6002718A (en) * 1995-10-27 1999-12-14 Hewlett-Packard Company Method and apparatus for generating runlength-limited coding with DC control
DE19609774C2 (de) * 1996-03-13 1997-08-21 Juergen Kindler JK-double-space
US6359744B1 (en) * 1999-09-13 2002-03-19 Maxtor Corporation Reducing thermal decay of data signals recorded on magnetic media
US6437710B1 (en) 2000-11-10 2002-08-20 Oasis Design, Inc. Encoder within a communication system that avoids encoded DC accumulation and can use coding violations to synchronize a decoder and detect transmission errors
US6917313B1 (en) 2002-01-16 2005-07-12 Marvell International Ltd. DC-free codes
KR100560770B1 (ko) * 2003-09-15 2006-03-13 삼성전자주식회사 실시간 프로토콜 전환 기능을 갖는 비접촉 집적회로 카드및 그것을 포함한 카드 시스템
US6888478B1 (en) * 2004-02-03 2005-05-03 Unisys Corporation Data recording on digital media using direction and position of recording for compression of recorded data
DE102004021398B4 (de) * 2004-04-30 2007-06-28 Infineon Technologies Ag Verfahren und Schaltungsanordnung zum Zurücksetzen einer integrierten Schaltung
US7443781B2 (en) 2004-07-29 2008-10-28 Hewlett-Packard Development Company, L.P. Reducing variations in density of perturbations on a storage medium
US7164371B2 (en) * 2004-07-30 2007-01-16 Hitachi Global Storage Technologies Netherlands B.V. Method and apparatus for data coding for high density recording channels exhibiting low frequency contents
US7689132B2 (en) * 2005-06-07 2010-03-30 Industrial Technology Research Institute Interference-rejection coding method for an optical wireless communication system and the optical wireless communication system thereof
US7640444B2 (en) * 2006-01-26 2009-12-29 Nils Graef Systems and methods for low power bus operation
US7844020B2 (en) * 2007-06-08 2010-11-30 Advantest Corporation Transmission system, transmitter, receiver, and transmission method
US11967973B2 (en) 2021-05-06 2024-04-23 Samsung Display Co., Ltd. Low overhead transition encoding codes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108261A (en) * 1960-04-11 1963-10-22 Ampex Recording and/or reproducing system
US3622894A (en) * 1970-12-07 1971-11-23 Ibm Predetection signal compensation
US3810111A (en) * 1972-12-26 1974-05-07 Ibm Data coding with stable base line for recording and transmitting binary data
US3838448A (en) * 1973-02-07 1974-09-24 Control Data Corp Compensated baseline circuit
US3855616A (en) * 1973-10-01 1974-12-17 Ibm Phase shift reducing digital signal recording having no d.c. component
US4027335A (en) * 1976-03-19 1977-05-31 Ampex Corporation DC free encoding for data transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2531289A2 (fr) * 1976-03-19 1984-02-03 Ampex Appareil et procede de codage sans courant continu pour systeme de transmission de donnees
FR2484739A1 (fr) * 1980-06-16 1981-12-18 Philips Nv Procede pour le codage de bits de donnees sur un porteur d'enregistrement, dispositif pour l'execution du procede et porteur d'enregistrement pourvu d'une structure d'information
FR2484738A1 (fr) * 1980-06-16 1981-12-18 Philips Nv Procede pour le codage de bits de donnees sur un porteur d'enregistrement, dispositif pour la mise en oeuvre du procede, porteur d'enregistrement pourvu d'une structure d'information, et dispositif pour decoder le signal lu sur le porteur d'enregistrement

Also Published As

Publication number Publication date
DE2711526A1 (de) 1977-09-22
GB1578635A (en) 1980-11-05
CA1152182B (fr) 1983-08-16
NO770783L (no) 1977-09-20
JPS60149247A (ja) 1985-08-06
JPS52114206A (en) 1977-09-24
NO154179C (no) 1986-08-06
NO154179B (no) 1986-04-21
CA1152181B (fr) 1983-08-16
AT389195B (de) 1989-10-25
CA1085000A (fr) 1980-09-02
IT1086565B (it) 1985-05-28
NL7701211A (nl) 1977-09-21
FR2345018B1 (fr) 1981-07-17
NL190041B (nl) 1993-05-03
BE852627A (fr) 1977-07-18
DE2711526C2 (de) 1982-12-02
ATA188777A (de) 1989-03-15
NL190041C (nl) 1993-10-01
CA1152164B (fr) 1983-08-16
US4027335A (en) 1977-05-31

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