FR2239830B1 - - Google Patents

Info

Publication number
FR2239830B1
FR2239830B1 FR747426927A FR7426927A FR2239830B1 FR 2239830 B1 FR2239830 B1 FR 2239830B1 FR 747426927 A FR747426927 A FR 747426927A FR 7426927 A FR7426927 A FR 7426927A FR 2239830 B1 FR2239830 B1 FR 2239830B1
Authority
FR
France
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
FR747426927A
Other versions
FR2239830A1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2239830A1 publication Critical patent/FR2239830A1/fr
Application granted granted Critical
Publication of FR2239830B1 publication Critical patent/FR2239830B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/18—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements
    • 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
    • H03J7/08—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 using varactors, i.e. voltage variable reactive diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Television Receiver Circuits (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Networks Using Active Elements (AREA)
  • Picture Signal Circuits (AREA)
  • Noise Elimination (AREA)
FR747426927A 1973-08-03 1974-08-02 Expired FR2239830B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7310739,A NL173342C (nl) 1973-08-03 1973-08-03 Televisieontvanger met een automatische afstemcorrectieschakeling.

Publications (2)

Publication Number Publication Date
FR2239830A1 FR2239830A1 (fr) 1975-02-28
FR2239830B1 true FR2239830B1 (fr) 1979-02-09

Family

ID=19819366

Family Applications (1)

Application Number Title Priority Date Filing Date
FR747426927A Expired FR2239830B1 (fr) 1973-08-03 1974-08-02

Country Status (11)

Country Link
US (1) US3968325A (fr)
JP (1) JPS5927143B2 (fr)
AT (1) AT335533B (fr)
BE (1) BE818400A (fr)
CA (1) CA1038076A (fr)
DE (1) DE2435858C3 (fr)
ES (1) ES428847A1 (fr)
FR (1) FR2239830B1 (fr)
GB (1) GB1475803A (fr)
IT (1) IT1016744B (fr)
NL (1) NL173342C (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5382112A (en) * 1976-12-27 1978-07-20 Matsushita Electric Ind Co Ltd Automatic control circuit for local oscillating frequency
JPS5396613A (en) * 1977-02-03 1978-08-24 Matsushita Electric Ind Co Ltd Automatic controller for local oscillation frequency
US4091421A (en) * 1977-04-28 1978-05-23 Zenith Radio Corporation Television AFC system having complementary sound and picture carrier control effects
US4118740A (en) * 1977-07-21 1978-10-03 Zenith Radio Corporation Surface wave AFC discriminator with two zero crossings
JPS6049372B2 (ja) * 1978-03-30 1985-11-01 ソニー株式会社 テレビジヨン受像機
US4321624A (en) * 1978-10-30 1982-03-23 Rca Corporation AFT Circuit
US4220974A (en) * 1978-10-30 1980-09-02 Rca Corporation AFT circuit
US4263611A (en) * 1979-08-29 1981-04-21 Rca Corporation Television signal processing system
GB2061040B (en) * 1979-10-10 1983-08-10 Philips Electronic Associated Digital signal transmission system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435345A (en) * 1965-06-24 1969-03-25 Willis L Ashby System for detecting coherent energy in the presence of saturating noise
US3459887A (en) * 1966-04-11 1969-08-05 Zenith Radio Corp Automatic frequency control system
US3469025A (en) * 1966-05-23 1969-09-23 Rca Corp Automatic frequency control system
NL6905094A (fr) * 1969-04-01 1970-10-05
US3704420A (en) * 1970-07-20 1972-11-28 Us Navy Automatic frequency control for suppressed carrier receivers

Also Published As

Publication number Publication date
ES428847A1 (es) 1976-08-16
DE2435858C3 (de) 1978-10-12
CA1038076A (fr) 1978-09-05
US3968325A (en) 1976-07-06
DE2435858B2 (de) 1978-02-16
NL173342C (nl) 1984-06-18
GB1475803A (en) 1977-06-10
JPS5046039A (fr) 1975-04-24
NL173342B (nl) 1983-08-01
NL7310739A (nl) 1975-02-05
AU7180474A (en) 1976-02-05
IT1016744B (it) 1977-06-20
AT335533B (de) 1977-03-10
BE818400A (fr) 1975-02-03
ATA627974A (de) 1976-07-15
JPS5927143B2 (ja) 1984-07-03
FR2239830A1 (fr) 1975-02-28
DE2435858A1 (de) 1975-02-27

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Legal Events

Date Code Title Description
ST Notification of lapse