NL77417C - - Google Patents

Info

Publication number
NL77417C
NL77417C NL77417DA NL77417C NL 77417 C NL77417 C NL 77417C NL 77417D A NL77417D A NL 77417DA NL 77417 C NL77417 C NL 77417C
Authority
NL
Netherlands
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 of NL77417C publication Critical patent/NL77417C/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/18—Time-division multiplex systems using frequency compression and subsequent expansion of the individual signals
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H04N7/127—Systems in which different parts of the picture signal frequency band are individually processed, e.g. suppressed, transposed

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Television Signal Processing For Recording (AREA)
NL77417D 1941-01-17 NL77417C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US374860A US2306435A (en) 1941-01-17 1941-01-17 Frequency compression

Publications (1)

Publication Number Publication Date
NL77417C true NL77417C (de)

Family

ID=23478485

Family Applications (1)

Application Number Title Priority Date Filing Date
NL77417D NL77417C (de) 1941-01-17

Country Status (5)

Country Link
US (1) US2306435A (de)
BE (1) BE446268A (de)
CH (1) CH266524A (de)
FR (1) FR888195A (de)
NL (1) NL77417C (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489296A (en) * 1942-02-05 1949-11-29 Int Standard Electric Corp System for measuring frequency deviations
US2617879A (en) * 1948-06-18 1952-11-11 Rca Corp Signal quantizer
US2578083A (en) * 1948-07-07 1951-12-11 Automatic Elect Lab Time-division multiplex system wherein the duration of each received sample is effectively increased
US2656407A (en) * 1949-02-12 1953-10-20 Zenith Radio Corp Subscriber signaling system
US2649498A (en) * 1949-03-03 1953-08-18 Zenith Radio Corp Blanking arrangement for subscription television receivers
US2652449A (en) * 1949-12-30 1953-09-15 Bell Telephone Labor Inc Motional correlation in reduced band width television
US2629011A (en) * 1949-12-30 1953-02-17 Bell Telephone Labor Inc Television system having reduced transmission bandwidth
US2987614A (en) * 1952-02-06 1961-06-06 Claudius H M Roberts Secrecy voice radio communication system
US2879499A (en) * 1954-07-23 1959-03-24 Ackerlind Erik High frequency pen recorder
BE541664A (de) * 1954-09-30
US2921976A (en) * 1956-03-30 1960-01-19 Minnesota Mining & Mfg Reproducing color television chrominance signals
US2906816A (en) * 1956-07-24 1959-09-29 Bell Telephone Labor Inc Method and apparatus for reducing television bandwidth
GB858346A (en) * 1956-11-20 1961-01-11 Nat Res Dev Improvements in or relating to television, facsimile and like signal transmission systems
US3024311A (en) * 1957-01-29 1962-03-06 Ampex Signal system
US3083338A (en) * 1959-11-10 1963-03-26 Crosby Lab Inc Speech communication system
US3184542A (en) * 1961-03-15 1965-05-18 David S Horsley Video recording and reproduction with reduced redundancy
US3204026A (en) * 1962-04-30 1965-08-31 William J Casey Narrow bandwidth scanning system
US3726995A (en) * 1971-01-07 1973-04-10 H Lehmann Method and apparatus for more slowly telecasting live sports events instantly as they take place

Also Published As

Publication number Publication date
BE446268A (de)
US2306435A (en) 1942-12-29
FR888195A (fr) 1943-12-06
CH266524A (fr) 1950-01-31

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