FR1346327A - Compresseur adaptable d'informations - Google Patents

Compresseur adaptable d'informations

Info

Publication number
FR1346327A
FR1346327A FR913216A FR913216A FR1346327A FR 1346327 A FR1346327 A FR 1346327A FR 913216 A FR913216 A FR 913216A FR 913216 A FR913216 A FR 913216A FR 1346327 A FR1346327 A FR 1346327A
Authority
FR
France
Prior art keywords
gate
signal
frame
counter
flop
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
FR913216A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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
Priority claimed from US147343A external-priority patent/US3185824A/en
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of FR1346327A publication Critical patent/FR1346327A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • 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
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H03M7/48—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind alternating with other codes during the code conversion process, e.g. run-length coding being performed only as long as sufficientlylong runs of digits of the same kind are present

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FR913216A 1961-10-24 1962-10-24 Compresseur adaptable d'informations Expired FR1346327A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US147223A US3185823A (en) 1961-10-24 1961-10-24 Data compactor
US147343A US3185824A (en) 1961-10-24 1961-10-24 Adaptive data compactor
US147366A US3213268A (en) 1961-10-24 1961-10-24 Data compactor

Publications (1)

Publication Number Publication Date
FR1346327A true FR1346327A (fr) 1963-12-20

Family

ID=27386537

Family Applications (1)

Application Number Title Priority Date Filing Date
FR913216A Expired FR1346327A (fr) 1961-10-24 1962-10-24 Compresseur adaptable d'informations

Country Status (4)

Country Link
US (2) US3185823A (fr)
DE (3) DE1192698B (fr)
FR (1) FR1346327A (fr)
GB (1) GB1018465A (fr)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289169A (en) * 1962-09-27 1966-11-29 Beckman Instruments Inc Redundancy reduction memory
US3539997A (en) * 1962-12-05 1970-11-10 Bell Telephone Labor Inc Synchronizing circuit
US3339142A (en) * 1963-07-01 1967-08-29 Martin Marietta Corp Adaptive pulse transmission system with modified delta modulation and redundant pulse elimination
US3311893A (en) * 1963-08-29 1967-03-28 Sperry Rand Corp Memory organization wherein only new data bits which are different from the old are recorded
US3337850A (en) * 1963-10-21 1967-08-22 Collins Radio Co Digital phase transition detector
GB1051786A (fr) * 1963-10-23 1900-01-01
US3490690A (en) * 1964-10-26 1970-01-20 Ibm Data reduction system
DE1249320B (fr) * 1964-12-23
US3380027A (en) * 1965-02-01 1968-04-23 Bendix Corp Electronic computer system
US3432815A (en) * 1965-02-15 1969-03-11 Ibm Switching logic for a two-dimensional memory
DE1240120B (de) * 1965-03-24 1967-05-11 Siemens Ag Verfahren und Anordnung zum Aufzeichnen und Weitersenden von Telegrafie-Nachrichten auf bzw. von einem Speicher
US3369222A (en) * 1965-06-24 1968-02-13 James E. Webb Data compressor
US3378641A (en) * 1965-10-15 1968-04-16 Martin Marietta Corp Redundancy-elimination system for transmitting each sample only if it differs from previously transmitted sample by pre-determined amount
US3413611A (en) * 1966-01-17 1968-11-26 Pfuetze David Method and apparatus for the compaction of data
US3535696A (en) * 1967-11-09 1970-10-20 Webb James E Data compression system with a minimum time delay unit
US3593309A (en) * 1969-01-03 1971-07-13 Ibm Method and means for generating compressed keys
US3603937A (en) * 1969-06-26 1971-09-07 Ibm Multilevel compressed index generation method and means
US3647964A (en) * 1970-02-24 1972-03-07 Ibm Run-length-limited coding for modified raised-cosine equalization channel
US3675211A (en) * 1970-09-08 1972-07-04 Ibm Data compaction using modified variable-length coding
US3711650A (en) * 1970-10-26 1973-01-16 Logicon Inc Adaptive pulse code modulation system
US3716851A (en) * 1971-02-09 1973-02-13 Bell Telephone Labor Inc Self-synchronizing sequential encoding systems
USRE31942E (en) * 1971-03-01 1985-07-09 High speed serial scan and readout of keyboards
US3749890A (en) * 1971-06-21 1973-07-31 Olympus Optical Co Division logic circuit
US3921143A (en) * 1971-12-29 1975-11-18 Ibm Minimal redundancy encoding method and means
US3813485A (en) * 1972-01-05 1974-05-28 Ibm System for compression of digital data
US3916095A (en) * 1972-02-17 1975-10-28 Dacom Inc Dual-line data compression method and system for compressing, transmitting and reproducing facsimile data
US3833900A (en) * 1972-08-18 1974-09-03 Ibm Image compaction system
US3875344A (en) * 1973-03-15 1975-04-01 Westinghouse Electric Corp Digital data compression method and system
FR2231972B1 (fr) * 1973-05-29 1977-04-29 Electricite De France
US3949377A (en) * 1974-09-03 1976-04-06 Ultronic Systems Corporation Data storage and processing apparatus including processing of spacer characters
US4077034A (en) * 1974-11-04 1978-02-28 Dell Harold R Data compression
FR2319905A1 (fr) * 1975-08-01 1977-02-25 Thomson Csf Dispositif de compression de bande et systeme radar comportant un tel dispositif
US4028731A (en) * 1975-09-29 1977-06-07 International Business Machines Corporation Apparatus for compression coding using cross-array correlation between two-dimensional matrices derived from two-valued digital images
JPS5411614A (en) * 1977-06-27 1979-01-27 Nec Corp Code conversion unit for digital signal
CA1175556A (fr) * 1981-02-24 1984-10-02 Kazumoto Iinuma Systeme pour transmettre un signal video avec elimination des durees de signal breves dans un signal code a partir de signal video
ATE15415T1 (de) * 1981-09-24 1985-09-15 Gretag Ag Verfahren und vorrichtung zur redundanzvermindernden digitalen sprachverarbeitung.
JPS58140899A (ja) * 1982-02-16 1983-08-20 ソニ−・テクトロニクス株式会社 ロジツク信号表示方法
JPS59127442A (ja) * 1983-01-11 1984-07-23 Sony Corp 音声信号の秘話方式
JPH0828053B2 (ja) * 1983-08-08 1996-03-21 株式会社日立製作所 データ記録方法
JPH0643142B2 (ja) * 1983-09-29 1994-06-08 アルプス電気株式会社 プリンタのスペ−ス処理装置
US4715735A (en) * 1983-10-31 1987-12-29 Brother Kogyo Kabushiki Kaisha Dual mode printing apparatus with multiple print ribbon cassettes
JPS60109868A (ja) * 1983-11-19 1985-06-15 Brother Ind Ltd 印字装置
US4660145A (en) * 1984-02-03 1987-04-21 Sundstrad Data Control, Inc. System for compressing aircraft flight data utilizing a multilevel time format
JPH069375B2 (ja) * 1984-04-27 1994-02-02 株式会社東芝 中間調画情報の符号化伝送方式
JPH0643135B2 (ja) * 1984-06-05 1994-06-08 沖電気工業株式会社 ドットプリンタのドットパターン格納方法
JPS6151363A (ja) * 1984-08-21 1986-03-13 Brother Ind Ltd 複合プリンタ
CA1299750C (fr) * 1986-01-03 1992-04-28 Ira Alan Gerson Methode optimale de reduction de donnees pour systeme de reconnaissance vocale
US4942390A (en) * 1987-04-01 1990-07-17 International Business Machines Corporation Method and apparatus for generating a character image
GB9020596D0 (en) * 1990-09-21 1990-10-31 Alcatel Business Systems Data transmission method and apparatus
KR100969748B1 (ko) 2007-01-29 2010-07-13 삼성전자주식회사 직렬 통신 시스템에서 직렬 데이터의 송수신 방법 및 장치와 이를 위한 직렬 통신 시스템

Also Published As

Publication number Publication date
DE1192698B (de) 1965-05-13
GB1018465A (en) 1966-01-26
DE1162398B (de) 1964-02-06
US3213268A (en) 1965-10-19
US3185823A (en) 1965-05-25
DE1162399B (de) 1964-02-06

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