KR850000158A - 스켈치(squelch)회로 - Google Patents

스켈치(squelch)회로 Download PDF

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Publication number
KR850000158A
KR850000158A KR1019840003611A KR840003611A KR850000158A KR 850000158 A KR850000158 A KR 850000158A KR 1019840003611 A KR1019840003611 A KR 1019840003611A KR 840003611 A KR840003611 A KR 840003611A KR 850000158 A KR850000158 A KR 850000158A
Authority
KR
South Korea
Prior art keywords
output
frequency
oscillator
limiting amplifier
squelch circuit
Prior art date
Application number
KR1019840003611A
Other languages
English (en)
Inventor
알란 노트 헨리
Original Assignee
윌리암 더글라스 윌튼
더 콘먼 웰스 오브 오스트레일리아
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 윌리암 더글라스 윌튼, 더 콘먼 웰스 오브 오스트레일리아 filed Critical 윌리암 더글라스 윌튼
Publication of KR850000158A publication Critical patent/KR850000158A/ko

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/53—Immunoassay; Biospecific binding assay; Materials therefor
    • G01N33/574—Immunoassay; Biospecific binding assay; Materials therefor for cancer
    • G01N33/57407—Specifically defined cancers
    • G01N33/57426—Specifically defined cancers leukemia
    • 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

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • Urology & Nephrology (AREA)
  • Molecular Biology (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Cell Biology (AREA)
  • Hospice & Palliative Care (AREA)
  • Biotechnology (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Oncology (AREA)
  • Analytical Chemistry (AREA)
  • Microbiology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Noise Elimination (AREA)
  • Pulleys (AREA)
  • Braking Arrangements (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

내용 없음.

Description

스켈치(squelch)회로
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 스켈치 회로의 바람직한 일실시예의 회로도.

Claims (2)

  1. 요망된 가청신호가 수신된 경우를 제외하고 수신기의 가청출력을 뮤트하기 위해, 제한 증폭기와 뮤팅 게이트에 연결된 입력단자의 제한 증폭기 출력을 수신하고 발진기 및 발진기로 하여금 발진기의 자체 주파수를 제한 증폭기의 출력주파수에 정합시키는 회로망을 통해 상기 발진기를 제어하도록 궤환된 오류전압을 발생시키기 위해 상기 제한 증폭기 출력과 상기 발진기의 주파수를 비교하기 위한 위상 비교기를 포함하는 위상 고정루우프로 이루어지며, 상기 정합은 제한 증폭기 출력 주파수가 상승할 때 보다 하락할 때 더 빨이 발생되며, 상기 뮤팅게이트는 제한증폭기 출력주파수가 요구된 주파수보다 더 높을 경우 수신기의 출력을 뮤트하기 위해 상기 위상 고정루우프의 출력에 연결되는 것을 특징으로 하는 스켈치 회로.
  2. 제1항에 있어서, 제한증폭기는 언어의 기본 주파수 스펙트럼을 상승시키는 것을 특징으로 하는 스켈치회로.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019840003611A 1983-06-27 1984-06-26 스켈치(squelch)회로 KR850000158A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPG0003/83 1983-06-27
AUPG000383 1983-06-27

Publications (1)

Publication Number Publication Date
KR850000158A true KR850000158A (ko) 1985-02-25

Family

ID=3770201

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019840003611A KR850000158A (ko) 1983-06-27 1984-06-26 스켈치(squelch)회로

Country Status (9)

Country Link
US (1) US4627102A (ko)
EP (1) EP0148879B1 (ko)
JP (1) JPS61501883A (ko)
KR (1) KR850000158A (ko)
DE (1) DE3479947D1 (ko)
DK (1) DK85785D0 (ko)
IT (1) IT1176338B (ko)
NO (1) NO850697L (ko)
WO (1) WO1985000256A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783845A (en) * 1985-12-20 1988-11-08 Itt Aerospace Optical Digital tone squelch detector
US5058205A (en) * 1988-02-05 1991-10-15 Roehrs Michael R Transceiver squelch control method and apparatus
US5220685A (en) * 1990-06-15 1993-06-15 Bradt Gordon E Mute and automatic restore device for communications receivers
DE69220255T2 (de) * 1991-01-18 1997-11-20 Nec Corp Schaltung zur Unterdrückung von weissem Rauschen
JP2004297273A (ja) * 2003-03-26 2004-10-21 Kenwood Corp 音声信号雑音除去装置、音声信号雑音除去方法及びプログラム
US7586336B2 (en) * 2006-01-23 2009-09-08 Seiko Epson Corporation Method and circuit for squelch detection in serial communications

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1018254A (en) * 1973-03-29 1977-09-27 Motorola Portable telephone system having a battery saver feature
JPS5722252B2 (ko) * 1973-09-28 1982-05-12
US3904969A (en) * 1974-03-07 1975-09-09 Motorola Inc Audio periodicity squelch system
US4061979A (en) * 1975-10-20 1977-12-06 Digital Communications Corporation Phase locked loop with pre-set and squelch
US4093824A (en) * 1976-11-15 1978-06-06 Gte Sylvania Incorporated Receiver having a phase-locked loop
US4355417A (en) * 1977-09-22 1982-10-19 Kozak Jr Joseph H Squelch control circuit for amplitude modulated RF receivers
US4117410A (en) * 1977-10-13 1978-09-26 Motorola, Inc. Phase locked loop signal demodulator and squelch circuit
JPS54115817U (ko) * 1978-02-02 1979-08-14
JPS54160525A (en) * 1978-06-09 1979-12-19 Sadaji Nagabori Lead alloy for molten plating
US4228320A (en) * 1978-11-02 1980-10-14 Bell Telephone Laboratories, Incorporated Noise detector for frequency modulation systems
NL184594C (nl) * 1979-09-04 1989-09-01 Philips Nv Radio-ontvanger voorzien van een frequentie gesleutelde lus met audiofrequente terugkoppeling, en een stomschakeling.
US4342120A (en) * 1980-11-10 1982-07-27 The Bendix Corporation Squelch system for use in a multiple carrier AM communications systems receiver
US4388730A (en) * 1981-04-06 1983-06-14 Bell Telephone Laboratories, Incorporated Noise detector and data signal receiver for a frequency modulation system
US4392233A (en) * 1981-05-11 1983-07-05 Laughner Ernest M Method of filtering electromagnetic waves and dual channel audio code filter therefor
DE3127267A1 (de) * 1981-07-10 1983-01-27 Moto Meter Ag, 7250 Leonberg "digitale frequenzwandleranordnung, insbesondere fuer fahrzeug-tachometer"
US4492233A (en) * 1982-09-14 1985-01-08 Wright State University Method and apparatus for providing feedback-controlled muscle stimulation

Also Published As

Publication number Publication date
DE3479947D1 (en) 1989-11-02
WO1985000256A1 (en) 1985-01-17
IT8421630A0 (it) 1984-06-27
DK85785A (da) 1985-02-26
EP0148879A1 (en) 1985-07-24
EP0148879B1 (en) 1989-09-27
IT8421630A1 (it) 1985-12-27
DK85785D0 (da) 1985-02-26
NO850697L (no) 1985-02-21
US4627102A (en) 1986-12-02
EP0148879A4 (en) 1986-12-01
JPS61501883A (ja) 1986-08-28
IT1176338B (it) 1987-08-18

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