CA1061487A - Electronic channel selector with voltage memory circuit - Google Patents

Electronic channel selector with voltage memory circuit

Info

Publication number
CA1061487A
CA1061487A CA248,226A CA248226A CA1061487A CA 1061487 A CA1061487 A CA 1061487A CA 248226 A CA248226 A CA 248226A CA 1061487 A CA1061487 A CA 1061487A
Authority
CA
Canada
Prior art keywords
terminal
output
common junction
effect transistor
input
Prior art date
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
CA248,226A
Other languages
English (en)
French (fr)
Inventor
Shunji Minami
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 JP50034158A external-priority patent/JPS51109703A/ja
Priority claimed from JP50056941A external-priority patent/JPS51132703A/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA1061487A publication Critical patent/CA1061487A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J3/00—Continuous tuning
    • H03J3/02—Details
    • H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
    • H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
    • H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
    • 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
    • H03J5/02—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 variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0218—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of preset values

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
CA248,226A 1975-03-20 1976-03-19 Electronic channel selector with voltage memory circuit Expired CA1061487A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP50034158A JPS51109703A (en) 1975-03-20 1975-03-20 Denshichuunasenkyokusochi
JP50056941A JPS51132703A (en) 1975-05-13 1975-05-13 Electronic channel selection device

Publications (1)

Publication Number Publication Date
CA1061487A true CA1061487A (en) 1979-08-28

Family

ID=26372942

Family Applications (1)

Application Number Title Priority Date Filing Date
CA248,226A Expired CA1061487A (en) 1975-03-20 1976-03-19 Electronic channel selector with voltage memory circuit

Country Status (7)

Country Link
US (1) US4020420A (enExample)
CA (1) CA1061487A (enExample)
DE (1) DE2611808A1 (enExample)
FR (1) FR2305062A1 (enExample)
GB (1) GB1542138A (enExample)
IT (1) IT1058621B (enExample)
NL (1) NL174205C (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5456701A (en) * 1977-10-14 1979-05-08 Sanyo Electric Co Ltd Preset receiving device
US20050052579A1 (en) * 2003-08-18 2005-03-10 Alps Electric Co., Ltd. Television tuner having circuit for attenuating FM broadcasting band
US20230077359A1 (en) * 2021-09-16 2023-03-16 Innolux Corporation Electronic device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3467870A (en) * 1965-02-16 1969-09-16 Trio Corp Automatic frequency sweep apparatus
DE1538337B2 (de) * 1966-05-06 1971-03-18 Robert Bosch Elektronik Gmbh, 1000 Berlin Und 7000 Stuttgart Einrichtung zur ferngesteuerten frequenzumschaltung
DE2139173A1 (de) * 1971-07-30 1973-02-08 Loewe Opta Gmbh Schaltungsanordnung zur automatischen sendersuche bei geraeten der nachrichtentechnik mit kapazitaetsdioden-abstimmung
US3644853A (en) * 1970-11-23 1972-02-22 Zenith Radio Corp Voltage-controlled signal-seeking tuning system
US3691298A (en) * 1970-12-03 1972-09-12 Carl R Pittman Touch tuning and control circuits
US3737787A (en) * 1971-06-29 1973-06-05 Gen Electric Electronic signal seeking system with rapid scan
US3766483A (en) * 1971-06-29 1973-10-16 Gen Electric Signal seeking tuner control system
GB1400583A (en) * 1971-09-14 1975-07-16 Matsushita Electric Industrial Co Ltd Tuning system
GB1409798A (en) * 1971-09-25 1975-10-15 Matsushita Electric Industrial Co Ltd Frequency control arrangements

Also Published As

Publication number Publication date
NL7602799A (nl) 1976-09-22
NL174205B (nl) 1983-12-01
FR2305062A1 (fr) 1976-10-15
IT1058621B (it) 1982-05-10
GB1542138A (en) 1979-03-14
FR2305062B1 (enExample) 1978-04-14
DE2611808A1 (de) 1976-09-30
US4020420A (en) 1977-04-26
NL174205C (nl) 1984-05-01

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