NL173695C - Televisieontvanger met een automatische frequentieregelketen. - Google Patents

Televisieontvanger met een automatische frequentieregelketen.

Info

Publication number
NL173695C
NL173695C NLAANVRAGE7410501,A NL7410501A NL173695C NL 173695 C NL173695 C NL 173695C NL 7410501 A NL7410501 A NL 7410501A NL 173695 C NL173695 C NL 173695C
Authority
NL
Netherlands
Prior art keywords
television receiver
frequency control
automatic frequency
control chain
chain
Prior art date
Application number
NLAANVRAGE7410501,A
Other languages
English (en)
Dutch (nl)
Other versions
NL7410501A (nl
NL173695B (nl
Original Assignee
Matsushita Electric Ind Co Ltd
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
Priority claimed from JP48092192A external-priority patent/JPS5040225A/ja
Priority claimed from JP48117227A external-priority patent/JPS5069923A/ja
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of NL7410501A publication Critical patent/NL7410501A/xx
Publication of NL173695B publication Critical patent/NL173695B/xx
Application granted granted Critical
Publication of NL173695C publication Critical patent/NL173695C/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
    • H03J7/08—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
    • H03J7/10—Modification of automatic frequency control sensitivity or linearising automatic frequency control operation
    • 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)
  • Television Receiver Circuits (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
NLAANVRAGE7410501,A 1973-08-16 1974-08-05 Televisieontvanger met een automatische frequentieregelketen. NL173695C (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP48092192A JPS5040225A (xx) 1973-08-16 1973-08-16
JP48117227A JPS5069923A (xx) 1973-10-17 1973-10-17

Publications (3)

Publication Number Publication Date
NL7410501A NL7410501A (nl) 1975-02-18
NL173695B NL173695B (nl) 1983-09-16
NL173695C true NL173695C (nl) 1984-02-16

Family

ID=26433658

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7410501,A NL173695C (nl) 1973-08-16 1974-08-05 Televisieontvanger met een automatische frequentieregelketen.

Country Status (6)

Country Link
US (1) US3940554A (xx)
CA (1) CA1038487A (xx)
DE (1) DE2439085C3 (xx)
FR (1) FR2241171B1 (xx)
GB (1) GB1481633A (xx)
NL (1) NL173695C (xx)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015075A (en) * 1975-10-02 1977-03-29 Zenith Radio Corporation Television receiver automatic frequency control system
CA1064580A (en) * 1975-12-26 1979-10-16 Sony Corporation Automatic fine tuning circuit
JPS5396613A (en) * 1977-02-03 1978-08-24 Matsushita Electric Ind Co Ltd Automatic controller for local oscillation frequency
JPS57135582A (en) * 1981-02-16 1982-08-21 Hitachi Ltd Reception circuit for fm television signal
US4651104A (en) * 1982-07-07 1987-03-17 Fujitsu Limited Frequency converter with automatic frequency control
US4485404A (en) * 1982-09-01 1984-11-27 Rca Corporation Digital aft system which is activated during vertical retrace intervals
DE4026523A1 (de) * 1990-08-22 1992-02-27 Thomson Brandt Gmbh Verfahren und vorrichtung zur bilddaten-transformation
US5645603A (en) * 1995-07-25 1997-07-08 Peters; William E. Method of enhancing physical properties of non-elastomeric thermoplastic materials and resulting compositions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584141A (en) * 1968-12-16 1971-06-08 Matsushita Electric Ind Co Ltd Automatic tuning device for television receiver
US3858000A (en) * 1972-12-04 1974-12-31 Warwick Electronics Inc Extended range afc system

Also Published As

Publication number Publication date
DE2439085A1 (de) 1975-04-10
AU7196874A (en) 1976-02-05
DE2439085B2 (de) 1978-11-09
NL7410501A (nl) 1975-02-18
CA1038487A (en) 1978-09-12
NL173695B (nl) 1983-09-16
DE2439085C3 (de) 1979-07-12
FR2241171B1 (xx) 1982-02-12
GB1481633A (en) 1977-08-03
US3940554A (en) 1976-02-24
FR2241171A1 (xx) 1975-03-14

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee