CA1226067A - Methode et appareil multi-fonction de traitement de signaux numeriques - Google Patents

Methode et appareil multi-fonction de traitement de signaux numeriques

Info

Publication number
CA1226067A
CA1226067A CA000455564A CA455564A CA1226067A CA 1226067 A CA1226067 A CA 1226067A CA 000455564 A CA000455564 A CA 000455564A CA 455564 A CA455564 A CA 455564A CA 1226067 A CA1226067 A CA 1226067A
Authority
CA
Canada
Prior art keywords
bit
data signal
data
output
bits
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
Application number
CA000455564A
Other languages
English (en)
Inventor
David J. Thomson
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.)
AT&T Corp
Original Assignee
American Telephone and Telegraph Co Inc
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 American Telephone and Telegraph Co Inc filed Critical American Telephone and Telegraph Co Inc
Application granted granted Critical
Publication of CA1226067A publication Critical patent/CA1226067A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Dc Digital Transmission (AREA)
CA000455564A 1983-06-08 1984-05-31 Methode et appareil multi-fonction de traitement de signaux numeriques Expired CA1226067A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50219883A 1983-06-08 1983-06-08
US502,198 1983-06-08

Publications (1)

Publication Number Publication Date
CA1226067A true CA1226067A (fr) 1987-08-25

Family

ID=23996781

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000455564A Expired CA1226067A (fr) 1983-06-08 1984-05-31 Methode et appareil multi-fonction de traitement de signaux numeriques

Country Status (4)

Country Link
JP (1) JPS60501533A (fr)
CA (1) CA1226067A (fr)
GB (1) GB2155282B (fr)
WO (1) WO1984005002A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6180932A (ja) * 1984-09-28 1986-04-24 Nec Corp Ｍｓｋ型変調方法
JPH0685535B2 (ja) * 1985-10-26 1994-10-26 日本電気株式会社 ４相位相変調符号化装置
NL8601114A (nl) * 1986-05-01 1987-12-01 Philips Nv Transmissiestelsel voor de overdracht van databits.
JPH02143740A (ja) * 1988-11-25 1990-06-01 Nec Corp 変調装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048784A (en) * 1959-10-09 1962-08-07 Westinghouse Electric Corp Binary input-a. c. wave output selector using bipolar generator, integrator, and low pass filter
US3183442A (en) * 1959-10-09 1965-05-11 Westinghouse Electric Corp Phaseproof pulse signal transmission system utilizing binary to quaternary conversion means
US3962647A (en) * 1974-09-27 1976-06-08 The Bendix Corporation Biphase waveform generator using shift registers
JPS53108358A (en) * 1977-03-04 1978-09-21 Fujitsu Ltd Generation system of optional wavefor
JPS5799851A (en) * 1980-12-13 1982-06-21 Usac Electronics Ind Co Ltd Signal transmission system
US4410955A (en) * 1981-03-30 1983-10-18 Motorola, Inc. Method and apparatus for digital shaping of a digital data stream

Also Published As

Publication number Publication date
GB2155282B (en) 1987-02-18
JPS60501533A (ja) 1985-09-12
WO1984005002A1 (fr) 1984-12-20
GB2155282A (en) 1985-09-18
GB8502576D0 (en) 1985-03-06

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Legal Events

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