JPS56152336A - Squelch control circuit - Google Patents

Squelch control circuit

Info

Publication number
JPS56152336A
JPS56152336A JP5663680A JP5663680A JPS56152336A JP S56152336 A JPS56152336 A JP S56152336A JP 5663680 A JP5663680 A JP 5663680A JP 5663680 A JP5663680 A JP 5663680A JP S56152336 A JPS56152336 A JP S56152336A
Authority
JP
Japan
Prior art keywords
counter
squelch
depth
becomes
terminal
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
JP5663680A
Other languages
Japanese (ja)
Inventor
Shinichi Sato
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 JP5663680A priority Critical patent/JPS56152336A/en
Publication of JPS56152336A publication Critical patent/JPS56152336A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • 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

Landscapes

  • Noise Elimination (AREA)

Abstract

PURPOSE:To adjust the depth of the squelch operation by the turn-on and off signal transmitted from the remote controller, by setting the depth of the squelch operation preliminarily in the receiving device side by the counter. CONSTITUTION:When the signal given to control signal input terminal 10 is L, counter 7a is reset, and data set in preset terminal 11 is loaded to counter 7b. Next, when terminal 10 becomes H, counter 7a starts counting. The output of DA converter 8 rises in proportion to the count number; and when squelch circuit part 5 operates, counter 7b starts counting. After counter 7b counts the number of pulses of oscillator 6 corresponding to the loaded value, output CA becomes L to stop counting of counter 7a.
JP5663680A 1980-04-25 1980-04-25 Squelch control circuit Pending JPS56152336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5663680A JPS56152336A (en) 1980-04-25 1980-04-25 Squelch control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5663680A JPS56152336A (en) 1980-04-25 1980-04-25 Squelch control circuit

Publications (1)

Publication Number Publication Date
JPS56152336A true JPS56152336A (en) 1981-11-25

Family

ID=13032806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5663680A Pending JPS56152336A (en) 1980-04-25 1980-04-25 Squelch control circuit

Country Status (1)

Country Link
JP (1) JPS56152336A (en)

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