CA1181867A - Data compression process - Google Patents

Data compression process

Info

Publication number
CA1181867A
CA1181867A CA000402653A CA402653A CA1181867A CA 1181867 A CA1181867 A CA 1181867A CA 000402653 A CA000402653 A CA 000402653A CA 402653 A CA402653 A CA 402653A CA 1181867 A CA1181867 A CA 1181867A
Authority
CA
Canada
Prior art keywords
group
location
entry
list
index
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
CA000402653A
Other languages
English (en)
French (fr)
Inventor
Karl E. Heinz
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.)
Individual
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6132019&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1181867(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of CA1181867A publication Critical patent/CA1181867A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CA000402653A 1981-05-12 1982-05-11 Data compression process Expired CA1181867A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3118676.9 1981-05-12
DE19813118676 DE3118676A1 (de) 1981-05-12 1981-05-12 Verfahren zur kompression redundanter folgen serieller datenelemente

Publications (1)

Publication Number Publication Date
CA1181867A true CA1181867A (en) 1985-01-29

Family

ID=6132019

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000402653A Expired CA1181867A (en) 1981-05-12 1982-05-11 Data compression process

Country Status (4)

Country Link
EP (1) EP0065665A1 (enExample)
CA (1) CA1181867A (enExample)
DE (1) DE3118676A1 (enExample)
IN (1) IN156654B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558302A (en) * 1983-06-20 1985-12-10 Sperry Corporation High speed data compression and decompression apparatus and method
GB2172127B (en) * 1985-03-06 1988-10-12 Ferranti Plc Data compression system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3490690A (en) * 1964-10-26 1970-01-20 Ibm Data reduction system
CA1005916A (en) * 1972-08-16 1977-02-22 International Business Machines Corporation Video compaction for printed text
DE2460147C2 (de) * 1974-12-19 1983-05-05 Ibm Deutschland Gmbh, 7000 Stuttgart Anordnung zur Dekomprimierung komprimierter Information für aus schwarzen und weißen Bereichen zusammengesetze darzustellende Zeichen
US4044347A (en) * 1975-05-19 1977-08-23 International Business Machines Corporation Variable-length to fixed-length conversion of minimum-redundancy codes
US4054951A (en) * 1976-06-30 1977-10-18 International Business Machines Corporation Data expansion apparatus

Also Published As

Publication number Publication date
DE3118676C2 (enExample) 1989-05-11
EP0065665A1 (de) 1982-12-01
DE3118676A1 (de) 1982-12-02
IN156654B (enExample) 1985-10-05

Similar Documents

Publication Publication Date Title
US4044347A (en) Variable-length to fixed-length conversion of minimum-redundancy codes
DE69603053T2 (de) Verfahren zum Generieren eines gleichstromfreien Kodes mit Kodierung eines Teiles der Daten durch die Sequenz der digitalen Summe aufeinanderfolgender Kodewörtern, und Vorrichtung dazu
YU44995B (en) System for transfering information words with n bytes
US5208593A (en) Method and structure for decoding Huffman codes using leading ones detection
DE3785474D1 (de) Dekodierung von brueckennetzwerken und koden.
US5541595A (en) Variable length code decoder for simultaneous decoding the most significant bits and the least significant bits of a variable length code
US5550542A (en) Variable length code look-up table having separate code length determination
EP1588493A2 (de) Blockdatenkompressionssystem, bestehend aus einer kompressionseinrichtung und einer dekompressionseinrichtung, und verfahren zur schnellen blockdatenkompression mit multi-byte-suche
GB1535011A (en) Method and arrangement for redundancy-reducing picture coding
Capocelli et al. Bounds on the redundancy of Huffman codes (Corresp.)
CA1181867A (en) Data compression process
JPH01195770A (ja) 画像データ圧縮伝送方法
US5751233A (en) Decoding apparatus and method therefor
US5394144A (en) Variable length code decoding apparatus
US4129882A (en) Video coder for color signals
US5432512A (en) Apparatus for decoding variable length codes
US5838266A (en) Data processing apparatus and method using data compression
US4039948A (en) Multi-channel differential pulse code modulation system
US5574586A (en) Simultaneous optical compression and decompression apparatus
Ryabko Comments on “a source matching approach to finding minimax codes”
JP3199291B2 (ja) ハフマン復号化テーブルの構成方法
US5351046A (en) Method and system for compacting binary coded decimal data
JP3386638B2 (ja) 可変長符号の復号方法および装置
JPS6046859B2 (ja) 可変長符号化直列伝送方法
US5671296A (en) Method of electronically processing a quantized image

Legal Events

Date Code Title Description
MKEC Expiry (correction)
MKEX Expiry