FR2514969B1 - DEVICE FOR CODING A TRAIN OF CHARACTERS WITH INFORMATION COMPRESSION - Google Patents

DEVICE FOR CODING A TRAIN OF CHARACTERS WITH INFORMATION COMPRESSION

Info

Publication number: FR2514969B1
Authority: FR; France
Prior art keywords: train; characters; coding; information compression; compression
Prior art date: 1981-10-15
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

FR8217314A

Other languages

French (fr)

Other versions

FR2514969A1 (en

Inventor

Pierre A Humblet

Steven G Finn

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.)

Motorola Solutions Inc

Original Assignee

Codex 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.)

1981-10-15

Filing date

1982-10-15

Publication date

1989-02-03

1982-10-15 Application filed by Codex Corp filed Critical Codex Corp

1983-04-22 Publication of FR2514969A1 publication Critical patent/FR2514969A1/en

1989-02-03 Application granted granted Critical

1989-02-03 Publication of FR2514969B1 publication Critical patent/FR2514969B1/en

Status 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
- H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
- H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory

Landscapes

Engineering & Computer Science (AREA)
Theoretical Computer Science (AREA)
Compression, Expansion, Code Conversion, And Decoders (AREA)

FR8217314A 1981-10-15 1982-10-15 DEVICE FOR CODING A TRAIN OF CHARACTERS WITH INFORMATION COMPRESSION Expired FR2514969B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US31187781A	1981-10-15	1981-10-15
US31174481A	1981-10-15	1981-10-15

Publications (2)

Publication Number	Publication Date
FR2514969A1 FR2514969A1 (en)	1983-04-22
FR2514969B1 true FR2514969B1 (en)	1989-02-03

Family

ID=26978045

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR8217314A Expired FR2514969B1 (en)	1981-10-15	1982-10-15	DEVICE FOR CODING A TRAIN OF CHARACTERS WITH INFORMATION COMPRESSION

Country Status (4)

Country	Link
AU (4)	AU555476B2 (en)
DE (1)	DE3238130A1 (en)
FR (1)	FR2514969B1 (en)
GB (3)	GB2109204B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5045853A (en) *	1987-06-17	1991-09-03	Intel Corporation	Method and apparatus for statistically encoding digital data
US4926482A (en) *	1987-06-26	1990-05-15	Unisys Corp.	Apparatus and method for real time data compressor
US4967196A (en) *	1988-03-31	1990-10-30	Intel Corporation	Apparatus for decoding variable-length encoded data
US5371499A (en) *	1992-02-28	1994-12-06	Intersecting Concepts, Inc.	Data compression using hashing
GB2367223B (en) *	1997-01-21	2002-05-15	Fujitsu Ltd	Data encoding method and apparatus and data decoding method and apparatus
GB2321375B (en) *	1997-01-21	2002-02-27	Fujitsu Ltd	Data encoding method and apparatus and data decoding method and apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AU503988B2 (en) *	1975-11-25	1979-09-27	Rudolf Hell Gmbh	Digital programme length coding with redundancy reduction forthe transmission of binary coded image information
US4168513A (en) *	1977-09-12	1979-09-18	Xerox Corporation	Regenerative decoding of binary data using minimum redundancy codes
JPS5755669A (en) *	1980-09-05	1982-04-02	Ibm	Dynamic data compressing system

1982
- 1982-10-13 AU AU89328/82A patent/AU555476B2/en not_active Ceased
- 1982-10-14 DE DE19823238130 patent/DE3238130A1/en not_active Ceased
- 1982-10-15 GB GB08229520A patent/GB2109204B/en not_active Expired
- 1982-10-15 FR FR8217314A patent/FR2514969B1/en not_active Expired
1985
- 1985-01-30 GB GB08502325A patent/GB2152253B/en not_active Expired
- 1985-01-30 GB GB08502324A patent/GB2152252B/en not_active Expired
1986
- 1986-04-28 AU AU56778/86A patent/AU5677886A/en not_active Abandoned
- 1986-04-28 AU AU56777/86A patent/AU575722B2/en not_active Ceased
- 1986-04-28 AU AU56779/86A patent/AU575723B2/en not_active Ceased

Also Published As

Publication number	Publication date
AU555476B2 (en)	1986-09-25
FR2514969A1 (en)	1983-04-22
GB8502325D0 (en)	1985-02-27
AU575723B2 (en)	1988-08-04
GB2152253A (en)	1985-07-31
AU5677886A (en)	1986-09-18
AU5677986A (en)	1986-09-18
AU8932882A (en)	1983-04-21
AU5677786A (en)	1986-09-18
GB2109204A (en)	1983-05-25
GB2152253B (en)	1986-05-21
GB2152252B (en)	1986-05-21
DE3238130A1 (en)	1983-06-23
GB2152252A (en)	1985-07-31
AU575722B2 (en)	1988-08-04
GB2109204B (en)	1986-05-29
GB8502324D0 (en)	1985-02-27

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Legal Events

Date	Code	Title	Description
1999-07-30	ST	Notification of lapse