FR946257A - Système de communication - Google Patents

Système de communication

Info

Publication number
FR946257A
FR946257A FR946257DA FR946257A FR 946257 A FR946257 A FR 946257A FR 946257D A FR946257D A FR 946257DA FR 946257 A FR946257 A FR 946257A
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
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR946257A publication Critical patent/FR946257A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval
    • H03M1/56—Input signal compared with linear ramp
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/60—Analogue/digital converters with intermediate conversion to frequency of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
FR946257D 1944-09-16 1947-05-06 Système de communication Expired FR946257A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US554495A US2449467A (en) 1944-09-16 1944-09-16 Communication system employing pulse code modulation

Publications (1)

Publication Number Publication Date
FR946257A true FR946257A (fr) 1949-05-30

Family

ID=24213574

Family Applications (1)

Application Number Title Priority Date Filing Date
FR946257D Expired FR946257A (fr) 1944-09-16 1947-05-06 Système de communication

Country Status (5)

Country Link
US (1) US2449467A (fr)
BE (1) BE472941A (fr)
CH (1) CH275992A (fr)
ES (1) ES178391A1 (fr)
FR (1) FR946257A (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB682648A (en) * 1936-10-11 1952-11-12 Gaston Xavier Noeel Potier Improvements in or relating to a method and device for multiplex transmission by means of time modulated pulses
US3912868A (en) * 1943-07-17 1975-10-14 Bell Telephone Labor Inc Telephone privacy system
US3944745A (en) * 1945-05-10 1976-03-16 Bell Telephone Laboratories, Incorporated Secret signaling system with means for preventing key disclosure
US2724183A (en) * 1945-12-27 1955-11-22 Calibron Products Inc Remotely controlled precision drive and calculating systems
US2801281A (en) * 1946-02-21 1957-07-30 Bell Telephone Labor Inc Communication system employing pulse code modulation
US2651716A (en) * 1947-11-08 1953-09-08 Int Standard Electric Corp Pulse code modulation demodulator
GB680702A (en) * 1947-12-07 1952-10-08 Standard Telephones Cables Ltd Mixed modulation in pulsed intercommunication systems
GB644932A (en) * 1948-01-16 1950-10-18 Standard Telephones Cables Ltd Improvements in or relating to signal compression and expansion arrangements in electric communication systems
GB646050A (en) * 1948-02-20 1950-11-15 Standard Telephones Cables Ltd Improvements in or relating to electric pulse code modulation systems of communication
GB664401A (en) * 1948-03-25 1952-01-09 Nat Res Dev Improvements in thermionic valve circuits
US2619632A (en) * 1948-04-23 1952-11-25 Stromberg Carlson Co Pulse communication system
US2592308A (en) * 1948-09-01 1952-04-08 Bell Telephone Labor Inc Nonlinear pulse code modulation system
US2603714A (en) * 1948-09-01 1952-07-15 Bell Telephone Labor Inc Percentage time division multiplex for pulse code modulation
US2700068A (en) * 1948-11-16 1955-01-18 Muller Egon Nicolas Pulse multiplex system
BE492403A (fr) * 1948-11-26
BE492937A (fr) * 1948-12-24
US2725425A (en) * 1949-10-01 1955-11-29 Rca Corp System for transmitting intelligence at reduced bandwidth
IT500026A (fr) * 1950-05-17
BE504158A (fr) * 1950-05-17
US2605361A (en) * 1950-06-29 1952-07-29 Bell Telephone Labor Inc Differential quantization of communication signals
BE505568A (fr) * 1950-09-01
US2759998A (en) * 1951-10-26 1956-08-21 Itt Pulse communication system
US2950348A (en) * 1954-08-03 1960-08-23 Philco Corp Combined encoder and decoder system
NL204945A (fr) * 1955-03-11 1900-01-01
US2783455A (en) * 1955-07-05 1957-02-26 Paul Grimm Self synchronous delay line
US2949505A (en) * 1957-08-14 1960-08-16 Bell Telephone Labor Inc Reduced bandwith transmission system
US3244989A (en) * 1963-08-13 1966-04-05 Hewlett Packard Co Oscilloscope sweep circuits
US3886313A (en) * 1972-09-29 1975-05-27 Datotek Voice security method and system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1461783A (en) * 1919-12-27 1923-07-17 American Telephone & Telegraph Secret-communication system
US1561227A (en) * 1923-03-31 1925-11-10 Western Electric Co Carrier-current signaling system
US1709901A (en) * 1925-10-08 1929-04-23 American Telephone & Telegraph Secret-signaling system
US1757181A (en) * 1928-12-04 1930-05-06 American Telephone & Telegraph Privacy system for telephone transmission
BE428656A (fr) * 1937-06-18
US2262838A (en) * 1937-11-19 1941-11-18 Int Standard Electric Corp Electric signaling system
BE437148A (fr) * 1938-10-03
US2313209A (en) * 1938-11-08 1943-03-09 Valensi Georges Communication system
US2277000A (en) * 1940-09-17 1942-03-17 Philco Radio & Television Corp Synchronizing system
US2413023A (en) * 1944-01-06 1946-12-24 Standard Telephones Cables Ltd Demodulator

Also Published As

Publication number Publication date
CH275992A (fr) 1951-06-15
ES178391A1 (es) 1947-08-01
US2449467A (en) 1948-09-14
BE472941A (fr) 1900-01-01

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