BE442115A - - Google Patents

Info

Publication number
BE442115A
BE442115A BE442115DA BE442115A BE 442115 A BE442115 A BE 442115A BE 442115D A BE442115D A BE 442115DA BE 442115 A BE442115 A BE 442115A
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 of BE442115A publication Critical patent/BE442115A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/047—Automatic frequency control using an auxiliary signal, e.g. low frequency scanning of the locking range or superimposing a special signal on the input signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
    • H03J7/22—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • H03J7/30—Automatic scanning over a band of frequencies where the scanning is accomplished by mechanical means, e.g. by a motor
BE442115D 1940-02-29 BE442115A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321377A US2287925A (en) 1940-02-29 1940-02-29 Radio receiver

Publications (1)

Publication Number Publication Date
BE442115A true BE442115A (en)

Family

ID=23250364

Family Applications (1)

Application Number Title Priority Date Filing Date
BE442115D BE442115A (en) 1940-02-29

Country Status (5)

Country Link
US (1) US2287925A (en)
BE (1) BE442115A (en)
FR (1) FR882606A (en)
GB (1) GB549769A (en)
NL (1) NL63645C (en)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
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BE446845A (en) * 1941-08-16
FR884674A (en) * 1941-09-23 1943-08-24 Materiel Telephonique Radio receivers
US2459846A (en) * 1942-04-09 1949-01-25 Int Standard Electric Corp Voltage control arrangement
US2474354A (en) * 1942-05-19 1949-06-28 Patelhold Patentverwertung Automatic frequency control circuits
US2462856A (en) * 1942-05-19 1949-03-01 Sperry Corp Transmitter and/or receiver circuits
US2453988A (en) * 1942-07-10 1948-11-16 Radio Patents Corp Automatic frequency control
US2442583A (en) * 1942-10-10 1948-06-01 Rca Corp Scanning receiving system
US2444151A (en) * 1942-11-16 1948-06-29 Rca Corp Scanning receiver for detecting signals of unknown frequency
US2422381A (en) * 1942-12-08 1947-06-17 Victor S Johnson Method of lining up unicontrolled tuned radio apparatus
US2452575A (en) * 1943-04-22 1948-11-02 Sperry Corp Automatic frequency control
US2434293A (en) * 1943-05-11 1948-01-13 Sperry Gyroscope Co Inc Frequency control of an oscillator of the velocity modulation type
US2514443A (en) * 1943-06-07 1950-07-11 Rca Corp Selectivity control system
US2502294A (en) * 1943-08-19 1950-03-28 Wallace Marcel Double sweep panoramic radio receiver
US2434294A (en) * 1943-10-22 1948-01-13 Sperry Gyroscope Co Inc Frequency control system
US2647994A (en) * 1943-12-04 1953-08-04 Us Navy Automatic frequency control in pulse transmission systems
US2572216A (en) * 1944-04-01 1951-10-23 Bell Telephone Labor Inc Signal receiving system
US2425013A (en) * 1944-04-07 1947-08-05 Sperry Gyroscope Co Inc Frequency control system
US2498932A (en) * 1944-08-18 1950-02-28 Panoramic Radio Corp High-frequency tuning circuit
US2470843A (en) * 1944-10-04 1949-05-24 Philco Corp Stop-on carrier tuner
US2486551A (en) * 1944-10-04 1949-11-01 Philco Corp Automatic tuning electric system
US2419984A (en) * 1944-10-19 1947-05-06 Philco Corp Wide-band superheterodyne receiver
US2427191A (en) * 1944-10-25 1947-09-09 Philco Corp Blanking control for radio beacon systems
US2469324A (en) * 1945-02-09 1949-05-03 Rca Corp Circuit tuner
US2499514A (en) * 1945-02-27 1950-03-07 Rca Corp Beat frequency sweep oscillator
US2455472A (en) * 1945-04-10 1948-12-07 Bell Telephone Labor Inc Method and system for electronically generating complex signals
US2686875A (en) * 1945-07-20 1954-08-17 Westinghouse Electric Corp Frequency control system
US2499584A (en) * 1945-10-15 1950-03-07 Belmont Radio Corp Signal-seeking tuner
US2702861A (en) * 1946-02-21 1955-02-22 Sidney A Wingate Wobbulator
US2588240A (en) * 1946-03-27 1952-03-04 Bell Telephone Labor Inc Pulsing circuit
US2700101A (en) * 1946-04-19 1955-01-18 Wallace Panoramic device
US2648063A (en) * 1946-08-01 1953-08-04 Us Navy Transceiver system
NL77668C (en) * 1947-01-27
US2560312A (en) * 1947-10-03 1951-07-10 Philco Corp Tuning aid for radio receivers
US2660511A (en) * 1947-10-24 1953-11-24 Nielsen A C Co Lockout and recycling device for an apparatus for determining the listening habits of wave signal receiver users
US2507525A (en) * 1948-02-06 1950-05-16 Marcel Wallace Panoramic system
US2653243A (en) * 1948-08-17 1953-09-22 Westinghouse Electric Corp Automatic tuning of resonant circuits
US2601384A (en) * 1948-11-03 1952-06-24 Rca Corp Electronic signal seeking receiver
BE491024A (en) * 1948-11-27
US2802943A (en) * 1949-07-16 1957-08-13 Rca Corp Automatic adjustment of frequency stabilization systems
US2553368A (en) * 1950-01-07 1951-05-15 Philco Corp Automatic frequency control for television receivers
US2692330A (en) * 1950-05-22 1954-10-19 Rca Corp Noise reduction arrangement
US2714662A (en) * 1950-05-29 1955-08-02 Rca Corp Frequency stabilization of microwave oscillations
US2714663A (en) * 1950-05-29 1955-08-02 Rca Corp Stabilization of microwave oscillations
US2729745A (en) * 1951-06-05 1956-01-03 Sperry Rand Corp Sweep arrangements for servo systems
US2757279A (en) * 1951-11-20 1956-07-31 Raytheon Mfg Co Two-way communication systems
NL89589C (en) * 1952-05-17
BE519977A (en) * 1952-05-17
US2838671A (en) * 1952-07-10 1958-06-10 Farnsworth Res Corp Automatic frequency control circuit
US2794910A (en) * 1952-08-19 1957-06-04 Philips Corp Automatic frequency stabilizing circuit
NL92231C (en) * 1952-11-17
US2903648A (en) * 1953-08-31 1959-09-08 Raymond W Bonner Electrical audio range sweep oscillator
US2891105A (en) * 1953-09-23 1959-06-16 Rca Corp Automatic frequency control apparatus
US2777064A (en) * 1953-12-11 1957-01-08 Harris A Robinson Frequency control system
US2882391A (en) * 1954-09-07 1959-04-14 Gen Motors Corp Electric radio tuner
US2901597A (en) * 1955-07-19 1959-08-25 Craig L Whitman Transmitter frequency control
US2833923A (en) * 1955-10-13 1958-05-06 Gen Electric Hunting a. f. c. system
US2837646A (en) * 1955-10-24 1958-06-03 Hughes Aircraft Co Coherent detector circuit
US2956239A (en) * 1956-09-22 1960-10-11 Philips Corp Phase lock system
US2923815A (en) * 1956-12-12 1960-02-02 Cgs Lab Inc Remote tuning of oscillator via duplex conductor
US2924783A (en) * 1956-12-27 1960-02-09 Itt Wide band automatic frequency control systems
US3076151A (en) * 1957-03-15 1963-01-29 Gen Electric Afc with search sweep control
US3000006A (en) * 1957-03-20 1961-09-12 Melpar Inc Mixed-base data transmission
US2930905A (en) * 1957-07-30 1960-03-29 Eugene S Mcvey Relaxation oscillator and integrator
US3156867A (en) * 1960-09-19 1964-11-10 James Scott And Company Electr Electric signal spectrum analysers including automatic frequency control
NL269766A (en) * 1960-09-30
US3155919A (en) * 1961-01-03 1964-11-03 Collins Radio Co A. f. c. spectrum lock-in circuit
US3227963A (en) * 1962-03-19 1966-01-04 Beckman Instruments Inc Digital frequency synthesizer having a plurality of cascaded phase-locked digit selector stages
US3208005A (en) * 1963-03-26 1965-09-21 Guttman Julius Multichannel frequency synthesizer
US3218571A (en) * 1963-07-24 1965-11-16 Avco Corp Electronic servo controlled automatic frequency scanning system
US3383625A (en) * 1966-10-04 1968-05-14 Western Electric Co System for generating a smoothly and continuously varying signal having a variable frequency
US4307465A (en) * 1979-10-15 1981-12-22 Gte Laboratories Incorporated Digital communications receiver

Also Published As

Publication number Publication date
US2287925A (en) 1942-06-30
GB549769A (en) 1942-12-07
FR882606A (en) 1943-06-09
NL63645C (en)

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