JPS5669922A - Digital synthesizer tuner - Google Patents

Digital synthesizer tuner

Info

Publication number
JPS5669922A
JPS5669922A JP14572079A JP14572079A JPS5669922A JP S5669922 A JPS5669922 A JP S5669922A JP 14572079 A JP14572079 A JP 14572079A JP 14572079 A JP14572079 A JP 14572079A JP S5669922 A JPS5669922 A JP S5669922A
Authority
JP
Japan
Prior art keywords
control signal
muting
local
tuner
digital synthesizer
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
JP14572079A
Other languages
Japanese (ja)
Other versions
JPS6031128B2 (en
Inventor
Katsuyuki Watarikawa
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 JP14572079A priority Critical patent/JPS6031128B2/en
Publication of JPS5669922A publication Critical patent/JPS5669922A/en
Publication of JPS6031128B2 publication Critical patent/JPS6031128B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems

Abstract

PURPOSE:To simplify the constitution by controlling muting, DX/LOCAL switching, etc., by one kind of control signal from an automatic controller. CONSTITUTION:By control signal X1 from computer 14, DX/LOCAL switch 8, muting device 9 and alarm on/off device 10 are controlled. Namely, when control signal X1 shows [1], tuner 1 is placed in the LOCAL reception state by DX/LOCAL switch 8, a radio signal is muted by muting device 9, and audio amplifier 6 is put into operation. When control signal X1 shows [0], DX/LOCAL switch 8 places the tuner in the DX reception state and muting device 9 and alarm on/off device 10 are turned off respectively.
JP14572079A 1979-11-09 1979-11-09 digital synthesizer tuner Expired JPS6031128B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14572079A JPS6031128B2 (en) 1979-11-09 1979-11-09 digital synthesizer tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14572079A JPS6031128B2 (en) 1979-11-09 1979-11-09 digital synthesizer tuner

Publications (2)

Publication Number Publication Date
JPS5669922A true JPS5669922A (en) 1981-06-11
JPS6031128B2 JPS6031128B2 (en) 1985-07-20

Family

ID=15391562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14572079A Expired JPS6031128B2 (en) 1979-11-09 1979-11-09 digital synthesizer tuner

Country Status (1)

Country Link
JP (1) JPS6031128B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820023A (en) * 1981-07-30 1983-02-05 Matsushita Electric Ind Co Ltd Radio receiver with automatic channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5820023A (en) * 1981-07-30 1983-02-05 Matsushita Electric Ind Co Ltd Radio receiver with automatic channel

Also Published As

Publication number Publication date
JPS6031128B2 (en) 1985-07-20

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