FR74686E - Système de communication - Google Patents

Système de communication

Info

Publication number
FR74686E
FR74686E FR782338A FR782338A FR74686E FR 74686 E FR74686 E FR 74686E FR 782338 A FR782338 A FR 782338A FR 782338 A FR782338 A FR 782338A FR 74686 E FR74686 E FR 74686E
Authority
FR
France
Prior art keywords
communication system
communication
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
FR782338A
Other languages
English (en)
Inventor
Michael J Ditoro
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 Standard Electric Corp
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to FR782338A priority Critical patent/FR74686E/fr
Application granted granted Critical
Publication of FR74686E publication Critical patent/FR74686E/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
    • H04B1/667—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 using a division in frequency subbands
    • 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
    • H04B1/62—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 providing a predistortion of the signal in the transmitter and corresponding correction in the receiver, e.g. for improving the signal/noise ratio
    • H04B1/64—Volume compression or expansion arrangements
    • 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
    • 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
    • H04B1/662—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 using a time/frequency relationship, e.g. time compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
FR782338A 1953-09-22 1958-12-22 Système de communication Expired FR74686E (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR782338A FR74686E (fr) 1953-09-22 1958-12-22 Système de communication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB26104/53A GB725915A (en) 1953-09-22 1953-09-22 Communication system
FR782338A FR74686E (fr) 1953-09-22 1958-12-22 Système de communication

Publications (1)

Publication Number Publication Date
FR74686E true FR74686E (fr) 1960-12-26

Family

ID=10238429

Family Applications (5)

Application Number Title Priority Date Filing Date
FR1093494D Expired FR1093494A (fr) 1953-09-22 1953-11-03 Système de communication
FR69039D Expired FR69039E (fr) 1953-09-22 1955-10-16 Système de communication
FR70513D Expired FR70513E (fr) 1953-09-22 1956-06-14 Système de communication
FR782338A Expired FR74686E (fr) 1953-09-22 1958-12-22 Système de communication
FR850964A Expired FR83154E (fr) 1953-09-22 1963-01-27 Système de communication

Family Applications Before (3)

Application Number Title Priority Date Filing Date
FR1093494D Expired FR1093494A (fr) 1953-09-22 1953-11-03 Système de communication
FR69039D Expired FR69039E (fr) 1953-09-22 1955-10-16 Système de communication
FR70513D Expired FR70513E (fr) 1953-09-22 1956-06-14 Système de communication

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR850964A Expired FR83154E (fr) 1953-09-22 1963-01-27 Système de communication

Country Status (4)

Country Link
US (1) US2766325A (fr)
CH (1) CH330684A (fr)
FR (5) FR1093494A (fr)
GB (1) GB725915A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987614A (en) * 1952-02-06 1961-06-06 Claudius H M Roberts Secrecy voice radio communication system
US2939918A (en) * 1954-08-24 1960-06-07 Freedman Nathan System for compressing bandwidth
DE1139535B (de) * 1955-07-20 1962-11-15 Telefunken Patent Verfahren zur Aufzeichnung und Wiedergabe von Fernsehsignalen auf bzw. von einem magnetischen Aufzeichnungstraeger
US2990453A (en) * 1955-12-06 1961-06-27 James L Flanagan Automatic spectrum analyzer
US2860187A (en) * 1955-12-08 1958-11-11 Bell Telephone Labor Inc Artificial reconstruction of speech
US2958039A (en) * 1956-05-18 1960-10-25 Univ California Delay line time compressor
US2958733A (en) * 1958-12-23 1960-11-01 Bell Telephone Labor Inc Transmission control in a two way communication system
US3009105A (en) * 1959-06-22 1961-11-14 Bell Telephone Labor Inc Electrical stroboscope
US3112452A (en) * 1959-12-28 1963-11-26 Gen Electric Signal processing arrangement with filters in plural channels minimizing undesirableinterference to narrow and wide pass bands
US3105950A (en) * 1960-04-19 1963-10-01 Singer Inc H R B Bandwidth compression system
DE1537596B1 (de) * 1967-11-14 1970-09-03 Michel Copel Verfahren und Schaltungsanordnung zum Verbessern der Verstaendlichkeit frequenzverzerrter Sprache
US3684838A (en) * 1968-06-26 1972-08-15 Kahn Res Lab Single channel audio signal transmission system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2009438A (en) * 1931-07-31 1935-07-30 Bell Telephone Labor Inc Carrier wave transmission system
US2151091A (en) * 1935-10-30 1939-03-21 Bell Telephone Labor Inc Signal transmission
US2117739A (en) * 1936-06-05 1938-05-17 Bell Telephone Labor Inc Signaling system
NL63459C (fr) * 1943-04-05
US2509064A (en) * 1945-08-23 1950-05-23 Bell Telephone Labor Inc Reduction of noise in pulse position modulation systems

Also Published As

Publication number Publication date
US2766325A (en) 1956-10-09
FR1093494A (fr) 1955-05-05
CH330684A (fr) 1958-06-15
FR69039E (fr) 1958-08-27
GB725915A (en) 1955-03-09
FR83154E (fr) 1964-06-26
FR70513E (fr) 1959-05-29

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