JPS55123241A - Synthesizer receiver - Google Patents

Synthesizer receiver

Info

Publication number
JPS55123241A
JPS55123241A JP3042779A JP3042779A JPS55123241A JP S55123241 A JPS55123241 A JP S55123241A JP 3042779 A JP3042779 A JP 3042779A JP 3042779 A JP3042779 A JP 3042779A JP S55123241 A JPS55123241 A JP S55123241A
Authority
JP
Japan
Prior art keywords
period
switch
reception frequency
circuit
pulse
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
JP3042779A
Other languages
Japanese (ja)
Inventor
Noboru Someno
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP3042779A priority Critical patent/JPS55123241A/en
Publication of JPS55123241A publication Critical patent/JPS55123241A/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
    • H03J7/28—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers
    • H03J7/285—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE:To simplify manipulation and to secure channel selection by continuously varying a reception frequency by steps when the operation period of a channel- selecting switch exceeds a fixed value and by varying it by one step when not. CONSTITUTION:For example, when the ON period of up switch Su is longer than 0.5sec, the ON period is longer than the period of the division output of dividing circuit 41. Therefore, the output of circuit 41 is supplied to FF42 and scan pulse P32 from forming circuit 32 is inputted to counter 31 to increase a reception frequency, one step by one step. When the reception frequency reaches a certain value and broadcast is received, FF42 is reset to stop pulse P32 and the reception of the broadcast is carried on. When the ON period of switch Su is less than 0.5sec, circuit 41 is reset and pulse P32 is not supplied to counter 31, which results in only a one-step increase from a frequency before the operation of switch Su. Therefore, the reception frequency increases by only one step on every ON operation, making a step shift.
JP3042779A 1979-03-15 1979-03-15 Synthesizer receiver Pending JPS55123241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3042779A JPS55123241A (en) 1979-03-15 1979-03-15 Synthesizer receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3042779A JPS55123241A (en) 1979-03-15 1979-03-15 Synthesizer receiver

Publications (1)

Publication Number Publication Date
JPS55123241A true JPS55123241A (en) 1980-09-22

Family

ID=12303647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3042779A Pending JPS55123241A (en) 1979-03-15 1979-03-15 Synthesizer receiver

Country Status (1)

Country Link
JP (1) JPS55123241A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5762620A (en) * 1980-10-03 1982-04-15 Matsushita Electric Ind Co Ltd Synthesizer receiver
JPS57188443U (en) * 1981-05-26 1982-11-30
JPS61271660A (en) * 1985-05-28 1986-12-01 Matsushita Electric Ind Co Ltd Operation mode controller for compact disc player

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5762620A (en) * 1980-10-03 1982-04-15 Matsushita Electric Ind Co Ltd Synthesizer receiver
JPS611937B2 (en) * 1980-10-03 1986-01-21 Matsushita Electric Ind Co Ltd
JPS57188443U (en) * 1981-05-26 1982-11-30
JPS61271660A (en) * 1985-05-28 1986-12-01 Matsushita Electric Ind Co Ltd Operation mode controller for compact disc player

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