BE472941A - - Google Patents

Info

Publication number
BE472941A
BE472941A BE472941DA BE472941A BE 472941 A BE472941 A BE 472941A BE 472941D A BE472941D A BE 472941DA BE 472941 A BE472941 A BE 472941A
Authority
BE
Belgium
Application number
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.)
Publication date
Publication of BE472941A publication Critical patent/BE472941A/xx

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)
BE472941D 1944-09-16 BE472941A (zh)

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
BE472941A true BE472941A (zh) 1900-01-01

Family

ID=24213574

Family Applications (1)

Application Number Title Priority Date Filing Date
BE472941D BE472941A (zh) 1944-09-16

Country Status (5)

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

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 (zh) * 1948-11-26
BE492937A (zh) * 1948-12-24
US2725425A (en) * 1949-10-01 1955-11-29 Rca Corp System for transmitting intelligence at reduced bandwidth
IT500026A (zh) * 1950-05-17
BE504158A (zh) * 1950-05-17
US2605361A (en) * 1950-06-29 1952-07-29 Bell Telephone Labor Inc Differential quantization of communication signals
BE505568A (zh) * 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 (zh) * 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
NL88393C (zh) * 1937-06-18
US2262838A (en) * 1937-11-19 1941-11-18 Int Standard Electric Corp Electric signaling system
NL87334C (zh) * 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
FR946257A (fr) 1949-05-30
CH275992A (fr) 1951-06-15
ES178391A1 (es) 1947-08-01
US2449467A (en) 1948-09-14

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