GB1407163A - Method and apparatus for coding and decoding digital information - Google Patents

Method and apparatus for coding and decoding digital information

Info

Publication number
GB1407163A
GB1407163A GB258173A GB258173A GB1407163A GB 1407163 A GB1407163 A GB 1407163A GB 258173 A GB258173 A GB 258173A GB 258173 A GB258173 A GB 258173A GB 1407163 A GB1407163 A GB 1407163A
Authority
GB
United Kingdom
Prior art keywords
bit
bits
pair
output
level
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
GB258173A
Other languages
English (en)
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.)
Motors Liquidation Co
Original Assignee
General Motors 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 General Motors Corp filed Critical General Motors Corp
Publication of GB1407163A publication Critical patent/GB1407163A/en
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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
GB258173A 1972-01-28 1973-01-18 Method and apparatus for coding and decoding digital information Expired GB1407163A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/221,693 US4001811A (en) 1972-01-28 1972-01-28 Method and apparatus for coding and decoding digital information

Publications (1)

Publication Number Publication Date
GB1407163A true GB1407163A (en) 1975-09-24

Family

ID=22828931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB258173A Expired GB1407163A (en) 1972-01-28 1973-01-18 Method and apparatus for coding and decoding digital information

Country Status (6)

Country Link
US (1) US4001811A (enExample)
JP (1) JPS4885111A (enExample)
CA (1) CA1019071A (enExample)
DE (1) DE2304129A1 (enExample)
FR (1) FR2182826B1 (enExample)
GB (1) GB1407163A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373154A (en) 1980-05-16 1983-02-08 Racal Recorders Ltd. Data encoding and/or decoding

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3879342A (en) * 1973-12-28 1975-04-22 Honeywell Inf Systems Pre-recorded digital data compensation system
US4437086A (en) 1978-10-05 1984-03-13 Ampex Corporation Limited look-ahead means
AU542859B2 (en) * 1979-12-28 1985-03-21 Sony Corporation Method for digital encoding/decoding
JPS60113366A (ja) * 1983-11-24 1985-06-19 Sony Corp 情報変換方式
US5543800A (en) * 1995-11-06 1996-08-06 The United States Of America As Represented By The Secretary Of The Navy Radar decoder

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488663A (en) * 1961-05-25 1970-01-06 Rca Corp Apparatus for comparison and correction of successive recorded pulses
US3281866A (en) * 1964-06-23 1966-11-01 Stanley R Palowsky Vented plumbing fitting assembly
US3374475A (en) * 1965-05-24 1968-03-19 Potter Instrument Co Inc High density recording system
US3564557A (en) * 1968-05-21 1971-02-16 Honeywell Inc Self-clocking recording
US3560947A (en) * 1968-05-31 1971-02-02 Ibm Method and apparatus for communication and storage of binary information
US3623041A (en) * 1969-07-22 1971-11-23 Ibm Method and apparatus for encoding and decoding digital data
US3671960A (en) * 1970-07-06 1972-06-20 Honeywell Inc Four phase encoder system for three frequency modulation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4373154A (en) 1980-05-16 1983-02-08 Racal Recorders Ltd. Data encoding and/or decoding

Also Published As

Publication number Publication date
JPS4885111A (enExample) 1973-11-12
FR2182826B1 (enExample) 1976-04-23
FR2182826A1 (enExample) 1973-12-14
US4001811A (en) 1977-01-04
DE2304129A1 (de) 1973-08-02
CA1019071A (en) 1977-10-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees