JPS56168421A - Channel selecting circuit - Google Patents

Channel selecting circuit

Info

Publication number
JPS56168421A
JPS56168421A JP7338380A JP7338380A JPS56168421A JP S56168421 A JPS56168421 A JP S56168421A JP 7338380 A JP7338380 A JP 7338380A JP 7338380 A JP7338380 A JP 7338380A JP S56168421 A JPS56168421 A JP S56168421A
Authority
JP
Japan
Prior art keywords
station
automatic search
band
tuning
switched
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
JP7338380A
Other languages
Japanese (ja)
Inventor
Fumitoshi Nishizawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7338380A priority Critical patent/JPS56168421A/en
Publication of JPS56168421A publication Critical patent/JPS56168421A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H03J1/0041—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers
    • H03J1/005—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor for frequency synthesis with counters or frequency dividers in a loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To ensure an automatic search for station with no jump of a broadcast channel where the boradcast electric wave exists, by discontinuing a change of the tuning voltage which is applied to an electronic tuner for a certain time when the tuning band is switched. CONSTITUTION:When the band of an electronic tuner 1 is switched, the signal is transmitted to a microcomputer 7 to discontinue an automatic search for station for a certain time through a deciding circuit 12 for a band switch signal and regardless of the output of a deciding circuit 5 for the presence or absence of a synchronous signal. The circuit 12 is set so that the time of discontinuation of the automatic search of station becomes longer than the time during which a tuning loop is stabilized. Thus an automatic search for station is carried out with no channel jumping.
JP7338380A 1980-05-28 1980-05-28 Channel selecting circuit Pending JPS56168421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7338380A JPS56168421A (en) 1980-05-28 1980-05-28 Channel selecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7338380A JPS56168421A (en) 1980-05-28 1980-05-28 Channel selecting circuit

Publications (1)

Publication Number Publication Date
JPS56168421A true JPS56168421A (en) 1981-12-24

Family

ID=13516608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7338380A Pending JPS56168421A (en) 1980-05-28 1980-05-28 Channel selecting circuit

Country Status (1)

Country Link
JP (1) JPS56168421A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6091776A (en) * 1983-10-25 1985-05-23 Sony Corp Channel selection device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6091776A (en) * 1983-10-25 1985-05-23 Sony Corp Channel selection device

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