JPS5457817A - Receiver - Google Patents

Receiver

Info

Publication number
JPS5457817A
JPS5457817A JP12428677A JP12428677A JPS5457817A JP S5457817 A JPS5457817 A JP S5457817A JP 12428677 A JP12428677 A JP 12428677A JP 12428677 A JP12428677 A JP 12428677A JP S5457817 A JPS5457817 A JP S5457817A
Authority
JP
Japan
Prior art keywords
circuit
voltage
output
frequency
signal
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.)
Pending
Application number
JP12428677A
Other languages
Japanese (ja)
Inventor
Tsuneo Okubo
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12428677A priority Critical patent/JPS5457817A/en
Publication of JPS5457817A publication Critical patent/JPS5457817A/en
Pending legal-status Critical Current

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
    • H03J7/18—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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To obtain a receiver for radio signals of a radio set, television set, etc., which simplifies channel selections. CONSTITUTION:This receiver has trigger circuit 9 which generates a DC signal during the reception of signals at a certain frequency, time-constant circuit 10 which generates its output when applied with the DC signal of circuit 9 and stops generating its output temporarily after a constant time, frequency-varying voltage generating circuit 11 which causes its voltage if rising up to a certain value to drop down to its previous voltage and stops the rise in the voltage mentioned above temporarily during the application of the DC signal of circuit 9, change-over switch S1 which connects the output of circuit 9 to either circuit 10 or 11, and grounding switch S2 which grounds it. Then, the output of circuit 11 is made into a sweep voltage which varies the reception frequency variable reactance element 11 of the high- frequency circuit and local oscillation circuit.
JP12428677A 1977-10-17 1977-10-17 Receiver Pending JPS5457817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12428677A JPS5457817A (en) 1977-10-17 1977-10-17 Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12428677A JPS5457817A (en) 1977-10-17 1977-10-17 Receiver

Publications (1)

Publication Number Publication Date
JPS5457817A true JPS5457817A (en) 1979-05-10

Family

ID=14881568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12428677A Pending JPS5457817A (en) 1977-10-17 1977-10-17 Receiver

Country Status (1)

Country Link
JP (1) JPS5457817A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282810A (en) * 1985-10-08 1987-04-16 Matsushita Electric Ind Co Ltd Channel selecting device for television

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6282810A (en) * 1985-10-08 1987-04-16 Matsushita Electric Ind Co Ltd Channel selecting device for television

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