IT1120031B - Perfezionamento nei sistemi per la trasmissione di dati in forma binaria - Google Patents

Perfezionamento nei sistemi per la trasmissione di dati in forma binaria

Info

Publication number
IT1120031B
IT1120031B IT50445/79A IT5044579A IT1120031B IT 1120031 B IT1120031 B IT 1120031B IT 50445/79 A IT50445/79 A IT 50445/79A IT 5044579 A IT5044579 A IT 5044579A IT 1120031 B IT1120031 B IT 1120031B
Authority
IT
Italy
Prior art keywords
improvement
systems
transmission
data
binary form
Prior art date
Application number
IT50445/79A
Other languages
English (en)
Other versions
IT7950445A0 (it
Inventor
Jerry W Miller
Original Assignee
Ampex
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 filed Critical Ampex
Publication of IT7950445A0 publication Critical patent/IT7950445A0/it
Application granted granted Critical
Publication of IT1120031B publication Critical patent/IT1120031B/it

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
    • 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
    • H04L25/4906—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 binary 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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
IT50445/79A 1978-10-05 1979-10-03 Perfezionamento nei sistemi per la trasmissione di dati in forma binaria IT1120031B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/948,725 US4234897A (en) 1978-10-05 1978-10-05 DC Free encoding for data transmission

Publications (2)

Publication Number Publication Date
IT7950445A0 IT7950445A0 (it) 1979-10-03
IT1120031B true IT1120031B (it) 1986-03-19

Family

ID=25488193

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50445/79A IT1120031B (it) 1978-10-05 1979-10-03 Perfezionamento nei sistemi per la trasmissione di dati in forma binaria

Country Status (10)

Country Link
US (1) US4234897A (it)
JP (1) JPS55159658A (it)
BE (1) BE879125A (it)
CA (1) CA1140999A (it)
DE (1) DE2940506C2 (it)
FR (1) FR2438391B1 (it)
GB (1) GB2032227B (it)
HK (1) HK30188A (it)
IT (1) IT1120031B (it)
NL (1) NL188320C (it)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2460522A1 (fr) * 1979-07-02 1981-01-23 Cii Honeywell Bull Procede et dispositif d'enregistrement magnetique numerique avec polarisation a haute frequence
US4313206A (en) * 1979-10-19 1982-01-26 Burroughs Corporation Clock derivation circuit for double frequency encoded serial digital data
US4320525A (en) * 1979-10-29 1982-03-16 Burroughs Corporation Self synchronizing clock derivation circuit for double frequency encoded digital data
NL8003474A (nl) * 1980-06-16 1982-01-18 Philips Nv Werkwijze voor het coderen van databits op een regis- tratiedrager, inrichting voor het uitvoeren van de werkwijze en registratiedrager voorzien van een informatiestructuur.
NL8003476A (nl) * 1980-06-16 1982-01-18 Philips Nv Werkwijze voor het coderen van databits op een regis- tratiedrager, inrichting voor het uitvoeren van de werkwijze, registratiedrager voorzien van een infor- matiestructuur en inrichting voor het decoderen van het van de registratiedrager uitgelezen signaal.
US4459623A (en) * 1982-01-18 1984-07-10 Mds Qantel Corporation Method and apparatus for recovering NRZ information from MFM data
US4441193A (en) * 1982-05-03 1984-04-03 Burroughs Corporation Frequency-encoding circuit for reducing distortion
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
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
US4530088A (en) * 1983-02-15 1985-07-16 Sperry Corporation Group coding system for serial data transmission
JPS601956A (ja) * 1983-06-17 1985-01-08 Sony Corp デイジタルデ−タの変調方法
FR2585905B1 (fr) * 1985-08-02 1987-09-25 Telediffusion Fse Procede de modulation en bande de base d'un signal de donnees, appareil de modulation et appareil de demodulation correspondants
US4617553A (en) * 1985-08-12 1986-10-14 Harris Corporation Enhanced Miller code
US5023891A (en) * 1989-07-25 1991-06-11 Sf2 Corporation Method and circuit for decoding a Manchester code signal
JP2893091B2 (ja) * 1990-06-18 1999-05-17 株式会社リコー 光学的情報記録方法
US5390195A (en) * 1992-04-03 1995-02-14 Ampex Corporation Miller-squared decoder with erasure flag output
AU664616B2 (en) * 1992-04-13 1995-11-23 Toyo Ink Manufacturing Co. Ltd. Image transfer apparatus
US5805632A (en) * 1992-11-19 1998-09-08 Cirrus Logic, Inc. Bit rate doubler for serial data transmission or storage
US6351501B1 (en) 1998-06-29 2002-02-26 National Semiconductro Corporation Apparatus and method for providing direct current balanced code
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
DE10156111A1 (de) * 2001-11-16 2003-06-05 Philips Intellectual Property Empfangsschaltung zum Empfang von Nachrichtensignalen
DE10244066A1 (de) * 2002-09-06 2004-03-18 Volkswagen Ag Verfahren und Vorrichtung zur schnellen Erkennung von Übertragungsfehlern
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
US7443781B2 (en) 2004-07-29 2008-10-28 Hewlett-Packard Development Company, L.P. Reducing variations in density of perturbations on a storage medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810111A (en) * 1972-12-26 1974-05-07 Ibm Data coding with stable base line for recording and transmitting binary data
US4129888A (en) * 1973-07-02 1978-12-12 General Instrument Corporation Data recording and/or reproducing system
US3995264A (en) * 1974-11-01 1976-11-30 International Business Machines Corporation Apparatus for encoding and decoding binary data in a modified zero modulation data code
US4027335A (en) * 1976-03-19 1977-05-31 Ampex Corporation DC free encoding for data transmission system

Also Published As

Publication number Publication date
GB2032227B (en) 1983-05-18
US4234897A (en) 1980-11-18
BE879125A (fr) 1980-02-01
FR2438391B1 (fr) 1987-08-07
HK30188A (en) 1988-05-06
DE2940506C2 (de) 1984-06-07
GB2032227A (en) 1980-04-30
IT7950445A0 (it) 1979-10-03
FR2438391A1 (fr) 1980-04-30
NL188320B (nl) 1991-12-16
CA1140999A (en) 1983-02-08
DE2940506A1 (de) 1980-04-10
JPS55159658A (en) 1980-12-11
NL7907382A (nl) 1980-04-09
NL188320C (nl) 1992-05-18

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19931029