JPS5564441A - Radio receiver or the like - Google Patents

Radio receiver or the like

Info

Publication number
JPS5564441A
JPS5564441A JP13817978A JP13817978A JPS5564441A JP S5564441 A JPS5564441 A JP S5564441A JP 13817978 A JP13817978 A JP 13817978A JP 13817978 A JP13817978 A JP 13817978A JP S5564441 A JPS5564441 A JP S5564441A
Authority
JP
Japan
Prior art keywords
tuning
counter
frequency
tuning operation
timer circuit
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
JP13817978A
Other languages
Japanese (ja)
Inventor
Mitsuzo Shimomura
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP13817978A priority Critical patent/JPS5564441A/en
Publication of JPS5564441A publication Critical patent/JPS5564441A/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
    • H03J7/02—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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Circuits Of Receivers In General (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To allow the display unit of a radio receiver to display a reception frequency in tuning operation by driving a timer circuit by an AGC voltage, etc. CONSTITUTION:Counter 22 counts a reception frequency and in the 1st tuning operation, this count value is stored in memory 23. In the 2nd tuning operation, arithmetic circuit 24 makes a comparison between a 1st tuning frequency stored in memory 23 and a frequency of counter 23 in the 2nd tuning operation to detect a tuning direction and tuning speed, thereby leading an output out from an output part. This output operates timer circuit 3 to change display part 5 from time circuit 6 to reception frequency counter 22. Further, D-type FF31 is supplied with signals for AGC, etc., of the receiver, and consequently timer circuit 3 starts operating.
JP13817978A 1978-11-08 1978-11-08 Radio receiver or the like Pending JPS5564441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13817978A JPS5564441A (en) 1978-11-08 1978-11-08 Radio receiver or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13817978A JPS5564441A (en) 1978-11-08 1978-11-08 Radio receiver or the like

Publications (1)

Publication Number Publication Date
JPS5564441A true JPS5564441A (en) 1980-05-15

Family

ID=15215888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13817978A Pending JPS5564441A (en) 1978-11-08 1978-11-08 Radio receiver or the like

Country Status (1)

Country Link
JP (1) JPS5564441A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837243U (en) * 1981-09-01 1983-03-10 クラリオン株式会社 radio receiver
JPH01194517A (en) * 1988-01-28 1989-08-04 Matsushita Electric Ind Co Ltd Electronic channel selector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837243U (en) * 1981-09-01 1983-03-10 クラリオン株式会社 radio receiver
JPH01194517A (en) * 1988-01-28 1989-08-04 Matsushita Electric Ind Co Ltd Electronic channel selector

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