JPS5755609A - Automatic channel-selecting receiver - Google Patents

Automatic channel-selecting receiver

Info

Publication number
JPS5755609A
JPS5755609A JP13094480A JP13094480A JPS5755609A JP S5755609 A JPS5755609 A JP S5755609A JP 13094480 A JP13094480 A JP 13094480A JP 13094480 A JP13094480 A JP 13094480A JP S5755609 A JPS5755609 A JP S5755609A
Authority
JP
Japan
Prior art keywords
deltaf
detection signal
shifted
automatic channel
tuning
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
JP13094480A
Other languages
Japanese (ja)
Inventor
Shunichi Nezu
Hisashi Arita
Kiyotake Fukui
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 JP13094480A priority Critical patent/JPS5755609A/en
Publication of JPS5755609A publication Critical patent/JPS5755609A/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

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

PURPOSE:To perform automatic channel selection in a short time by increasing a sweep speed relatively by changing set frequency width. CONSTITUTION:As an automatic channel selection sweep is started, the code of a reception frequency shifted from a current reception frequency by N.DELTAf (N; normally about 2-4) is set in a code setter 6. Then, a level detector 7 checks the presence of a signal and when not, the generated code is further shifted by N.DELTAf. When the level detection signal is present, a tuning detector 8 checks the presence of the signal. When any tuning detection signal is not outputted, the generated code is furthermore shifted by DELTAf. Thus, it is shifted by DELTAf for each time until the tuning detection signal is obtained. Once the tuning detection signal is obtained, the sweep is stopped.
JP13094480A 1980-09-19 1980-09-19 Automatic channel-selecting receiver Pending JPS5755609A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13094480A JPS5755609A (en) 1980-09-19 1980-09-19 Automatic channel-selecting receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13094480A JPS5755609A (en) 1980-09-19 1980-09-19 Automatic channel-selecting receiver

Publications (1)

Publication Number Publication Date
JPS5755609A true JPS5755609A (en) 1982-04-02

Family

ID=15046311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13094480A Pending JPS5755609A (en) 1980-09-19 1980-09-19 Automatic channel-selecting receiver

Country Status (1)

Country Link
JP (1) JPS5755609A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518128A (en) * 1978-07-24 1980-02-08 Matsushita Electric Ind Co Ltd Channel selector device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518128A (en) * 1978-07-24 1980-02-08 Matsushita Electric Ind Co Ltd Channel selector device

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