JPS5658317A - Radio receiver - Google Patents

Radio receiver

Info

Publication number
JPS5658317A
JPS5658317A JP13468279A JP13468279A JPS5658317A JP S5658317 A JPS5658317 A JP S5658317A JP 13468279 A JP13468279 A JP 13468279A JP 13468279 A JP13468279 A JP 13468279A JP S5658317 A JPS5658317 A JP S5658317A
Authority
JP
Japan
Prior art keywords
capacitor
tuning
charge
detection circuit
discharge
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.)
Granted
Application number
JP13468279A
Other languages
Japanese (ja)
Other versions
JPS6030449B2 (en
Inventor
Minoru Ogita
Shigenobu Kimura
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP13468279A priority Critical patent/JPS6030449B2/en
Priority to US06/195,474 priority patent/US4344187A/en
Publication of JPS5658317A publication Critical patent/JPS5658317A/en
Publication of JPS6030449B2 publication Critical patent/JPS6030449B2/en
Expired 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
    • H03J7/02—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
    • H03J7/06—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 counters or frequency dividers
    • H03J7/065—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 counters or frequency dividers the counter or frequency divider being used in a phase locked loop

Abstract

PURPOSE:To make easy the tuning operation, by setting the reception frequency through charge/discharge of a capacitor based on the channel selection command and performing the charge/discharge of the capacitor with the output of a tuning shift detection circuit after that. CONSTITUTION:When a push button is depressed, a reception frequency set circuit 48 charges up a capacitor 37. Further, the oscillating frequency fo starts increasing according to the time constant determined with the capacitor 37. If a specific broadcast station is received, a tuning detection circuit detects this state to stop the increase in the tuning frequency fr. After that, the charging of the capacitor 37 is controlled with the output signal of the tuning shift detection circuit 20 via a charge/ discharge control circuit 43.
JP13468279A 1979-10-18 1979-10-18 Receiving machine Expired JPS6030449B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP13468279A JPS6030449B2 (en) 1979-10-18 1979-10-18 Receiving machine
US06/195,474 US4344187A (en) 1979-10-18 1980-10-09 Radio receiver with system for maintaining optimum tuning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13468279A JPS6030449B2 (en) 1979-10-18 1979-10-18 Receiving machine

Publications (2)

Publication Number Publication Date
JPS5658317A true JPS5658317A (en) 1981-05-21
JPS6030449B2 JPS6030449B2 (en) 1985-07-16

Family

ID=15134099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13468279A Expired JPS6030449B2 (en) 1979-10-18 1979-10-18 Receiving machine

Country Status (1)

Country Link
JP (1) JPS6030449B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62135162U (en) * 1986-02-18 1987-08-25

Also Published As

Publication number Publication date
JPS6030449B2 (en) 1985-07-16

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