CA1122326A - Data bit compression system - Google Patents

Data bit compression system

Info

Publication number
CA1122326A
CA1122326A CA288,207A CA288207A CA1122326A CA 1122326 A CA1122326 A CA 1122326A CA 288207 A CA288207 A CA 288207A CA 1122326 A CA1122326 A CA 1122326A
Authority
CA
Canada
Prior art keywords
bits
signal
selected group
binary signal
binary
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
CA288,207A
Other languages
English (en)
French (fr)
Inventor
Alan E. Elliott
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.)
EMC Corp
Original Assignee
Data General 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 Data General Corp filed Critical Data General Corp
Application granted granted Critical
Publication of CA1122326A publication Critical patent/CA1122326A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/02—Storage circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/24—Generation of individual character patterns

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Memory System (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Digital Computer Display Output (AREA)
  • Image Input (AREA)
CA288,207A 1976-10-08 1977-10-05 Data bit compression system Expired CA1122326A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/731,034 US4117470A (en) 1976-10-08 1976-10-08 Data bit compression system
US731,034 1976-10-08

Publications (1)

Publication Number Publication Date
CA1122326A true CA1122326A (en) 1982-04-20

Family

ID=24937771

Family Applications (1)

Application Number Title Priority Date Filing Date
CA288,207A Expired CA1122326A (en) 1976-10-08 1977-10-05 Data bit compression system

Country Status (6)

Country Link
US (1) US4117470A (en, 2012)
JP (2) JPS5347238A (en, 2012)
CA (1) CA1122326A (en, 2012)
DE (1) DE2744109A1 (en, 2012)
FR (1) FR2367318A1 (en, 2012)
GB (1) GB1549922A (en, 2012)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54152926A (en) * 1978-05-24 1979-12-01 Hitachi Ltd Address assignment system
US4193092A (en) * 1978-06-21 1980-03-11 Xerox Corporation Image interpolation system
JPS5544663A (en) * 1978-09-25 1980-03-29 Matsushita Electric Ind Co Ltd Character/pattern generator
US4231021A (en) * 1978-11-01 1980-10-28 Gte Products Corporation Address data converter
FR2463453A1 (fr) * 1979-05-23 1981-02-20 Signalisation Continental Procede et dispositif pour l'adressage d'une memoire d'image dans un systeme de teletexte
JPS55164881A (en) * 1979-06-09 1980-12-22 Sharp Kk Characterrgenerator readdcircuit
JPS5936265B2 (ja) * 1980-03-28 1984-09-03 富士通株式会社 コ−ド変換回路
HU180133B (en) * 1980-05-07 1983-02-28 Szamitastech Koord Equipment for displaying and storing tv picture information by means of useiof a computer access memory
US4445185A (en) * 1980-05-08 1984-04-24 Chesebrough-Pond's Inc. Video inspection system
JPS5872188A (ja) * 1981-10-26 1983-04-30 セイコーインスツルメンツ株式会社 画像メモリ用アドレス制御装置
US4458333A (en) * 1981-12-21 1984-07-03 International Business Machines Corporation Dot matrix character printing using constrained memory
DE3322954A1 (de) * 1982-11-24 1985-01-03 ANT Nachrichtentechnik GmbH, 7150 Backnang 7-stufiges phasenumtastungs/amplitudenumtastungs (psk/ask)-system
US4546385A (en) * 1983-06-30 1985-10-08 International Business Machines Corporation Data compression method for graphics images
US4626824A (en) * 1985-06-11 1986-12-02 International Business Machines Corporation Apparatus and algorithm for compressing and decompressing data
JPH0795398B2 (ja) * 1986-05-27 1995-10-11 日本電気株式会社 １チップマイクロコンピュータ
DE3856337T2 (de) * 1987-09-24 2000-03-23 Sand Technology Systems International, Inc. Bitfolgekompressor geeignet für boolesche Operationen
US5036457A (en) * 1987-09-24 1991-07-30 Nucleus International Corporation Bit string compressor with boolean operation processing capability
WO1992006440A1 (en) * 1990-10-05 1992-04-16 Microsoft Corporation System and method for information retrieval
JPH0651721A (ja) * 1992-07-29 1994-02-25 Canon Inc 表示制御装置
US7382878B2 (en) * 2001-06-22 2008-06-03 Uponus Technologies, Llc System and method for data encryption

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653028A (en) * 1967-08-29 1972-03-28 Honeywell Inf Systems Code conversion device for multiple terminal data editing display system
US3863284A (en) * 1972-10-19 1975-02-04 Ro Search Inc Last and apparatus for removing footwear therefrom
US3875344A (en) * 1973-03-15 1975-04-01 Westinghouse Electric Corp Digital data compression method and system
JPS5319379B2 (en, 2012) * 1973-04-26 1978-06-20
US3842414A (en) * 1973-06-18 1974-10-15 Ibm Binary coded decimal conversion apparatus
US3955189A (en) * 1974-07-24 1976-05-04 Lear Siegler Data display terminal having data storage and transfer apparatus employing matrix notation addressing
JPS5212533A (en) * 1975-07-21 1977-01-31 Hitachi Ltd Address position converting circuit
GB1513179A (en) * 1975-11-17 1978-06-07 British Broadcasting Corp Data display apparatus
US4006304A (en) * 1975-12-10 1977-02-01 Bell Telephone Laboratories, Incorporated Apparatus for word synchronization in an optical communication system
IT1084020B (it) * 1976-03-15 1985-05-25 Sperry Rand Corp Decodificatore degli indirizzi di una memoria

Also Published As

Publication number Publication date
DE2744109A1 (de) 1978-04-13
JPS5347238A (en) 1978-04-27
FR2367318B1 (en, 2012) 1984-10-19
JPS5984587U (ja) 1984-06-07
FR2367318A1 (fr) 1978-05-05
GB1549922A (en) 1979-08-08
US4117470A (en) 1978-09-26
DE2744109C2 (en, 2012) 1988-05-05

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Legal Events

Date Code Title Description
MKEX Expiry