NL149043B - AUTOMATIC TUNING DEVICE FOR A TELEVISION RECEIVER. - Google Patents

AUTOMATIC TUNING DEVICE FOR A TELEVISION RECEIVER.

Info

Publication number
NL149043B
NL149043B NL6818373A NL6818373A NL149043B NL 149043 B NL149043 B NL 149043B NL 6818373 A NL6818373 A NL 6818373A NL 6818373 A NL6818373 A NL 6818373A NL 149043 B NL149043 B NL 149043B
Authority
NL
Netherlands
Prior art keywords
television receiver
tuning device
automatic tuning
automatic
television
Prior art date
Application number
NL6818373A
Other languages
Dutch (nl)
Other versions
NL6818373A (en
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
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to NL6818373A priority Critical patent/NL149043B/en
Priority to FR1602578D priority patent/FR1602578A/fr
Publication of NL6818373A publication Critical patent/NL6818373A/xx
Publication of NL149043B publication Critical patent/NL149043B/en

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/12—Electrically-operated arrangements for indicating correct tuning
    • H03J3/14—Visual indication, e.g. magic eye
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
    • H03J5/242—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection
    • H03J5/244—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection used exclusively for band selection using electronic means
    • 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
    • H03J7/24—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes
    • H03J7/26—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
    • 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)
NL6818373A 1968-12-20 1968-12-20 AUTOMATIC TUNING DEVICE FOR A TELEVISION RECEIVER. NL149043B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL6818373A NL149043B (en) 1968-12-20 1968-12-20 AUTOMATIC TUNING DEVICE FOR A TELEVISION RECEIVER.
FR1602578D FR1602578A (en) 1968-12-20 1968-12-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6818373A NL149043B (en) 1968-12-20 1968-12-20 AUTOMATIC TUNING DEVICE FOR A TELEVISION RECEIVER.

Publications (2)

Publication Number Publication Date
NL6818373A NL6818373A (en) 1970-06-23
NL149043B true NL149043B (en) 1976-03-15

Family

ID=19805459

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6818373A NL149043B (en) 1968-12-20 1968-12-20 AUTOMATIC TUNING DEVICE FOR A TELEVISION RECEIVER.

Country Status (2)

Country Link
FR (1) FR1602578A (en)
NL (1) NL149043B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619492A (en) * 1969-06-02 1971-11-09 Rca Corp Automatic fine tuning circuitry
FR2185906B1 (en) * 1972-05-23 1977-05-06 Autovox Spa

Also Published As

Publication number Publication date
NL6818373A (en) 1970-06-23
FR1602578A (en) 1970-12-28

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: MATSUSHITA