DK664274A - Squelchkredslob - Google Patents

Squelchkredslob

Info

Publication number
DK664274A
DK664274A DK664274A DK664274A DK664274A DK 664274 A DK664274 A DK 664274A DK 664274 A DK664274 A DK 664274A DK 664274 A DK664274 A DK 664274A DK 664274 A DK664274 A DK 664274A
Authority
DK
Denmark
Prior art keywords
squelch circuit
squelch
circuit
Prior art date
Application number
DK664274A
Other languages
Danish (da)
English (en)
Inventor
B C Eastmond
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of DK664274A publication Critical patent/DK664274A/da

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
    • H03G3/342—Muting when some special characteristic of the signal is sensed which distinguishes it from noise, e.g. using speech detector
DK664274A 1974-03-07 1974-12-19 Squelchkredslob DK664274A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US449119A US3873925A (en) 1974-03-07 1974-03-07 Audio frequency squelch system

Publications (1)

Publication Number Publication Date
DK664274A true DK664274A (da) 1976-01-04

Family

ID=23782939

Family Applications (1)

Application Number Title Priority Date Filing Date
DK664274A DK664274A (da) 1974-03-07 1974-12-19 Squelchkredslob

Country Status (13)

Country Link
US (1) US3873925A (es)
JP (1) JPS5646295B2 (es)
AR (1) AR202957A1 (es)
BR (1) BR7410890A (es)
CA (1) CA1029444A (es)
DE (1) DE2507986A1 (es)
DK (1) DK664274A (es)
ES (1) ES434260A1 (es)
FR (1) FR2263645B1 (es)
GB (1) GB1443500A (es)
IL (1) IL46395A (es)
NL (1) NL7502540A (es)
ZA (1) ZA7593B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4071695A (en) * 1976-08-12 1978-01-31 Bell Telephone Laboratories, Incorporated Speech signal amplitude equalizer
JPS6041493B2 (ja) * 1977-03-16 1985-09-17 ソニー株式会社 受信機
FR2407607A1 (fr) * 1977-10-25 1979-05-25 Thomson Csf Dispositif a commande automatique de gain d'un recepteur b.l.u. et recepteur b.l.u. comportant un tel dispositif
US4228320A (en) * 1978-11-02 1980-10-14 Bell Telephone Laboratories, Incorporated Noise detector for frequency modulation systems
US5199049A (en) * 1990-04-27 1993-03-30 At&T Bell Laboratories Circuit and method of digital carrier detection for burst mode communication systems
US5881101A (en) * 1994-09-01 1999-03-09 Harris Corporation Burst serial tone waveform signaling method and device for squelch/wake-up control of an HF transceiver
US6711536B2 (en) 1998-10-20 2004-03-23 Canon Kabushiki Kaisha Speech processing apparatus and method
US7676204B2 (en) * 2007-05-10 2010-03-09 Freescale Semiconductor, Inc. Radio receiver having ignition noise detector and method therefor
CN113824470A (zh) * 2021-09-26 2021-12-21 海南宝通实业公司 一种跳频收信话音质量的改善方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102236A (en) * 1960-05-05 1963-08-27 Collins Radio Co Squelch circuit controlled by demodulated voice signal
US3213372A (en) * 1962-10-24 1965-10-19 Gen Dynamics Corp Signal-to-noise squelch circuit
US3325738A (en) * 1964-02-17 1967-06-13 Avco Corp Signal to noise ratio controlled squelch circuit
US3350650A (en) * 1964-06-17 1967-10-31 Collins Radio Co Noise and audio controlled squelch circuit
US3603884A (en) * 1969-06-04 1971-09-07 Motorola Inc Speech-noise discriminating constant pulse width squelch
US3660765A (en) * 1970-04-13 1972-05-02 Motorola Inc Squelch circuit having short and long time constant filters for squelch tail elimination

Also Published As

Publication number Publication date
JPS50120906A (es) 1975-09-22
DE2507986A1 (de) 1975-09-11
IL46395A0 (en) 1975-05-22
BR7410890A (pt) 1975-12-02
AU7721875A (en) 1976-07-15
JPS5646295B2 (es) 1981-11-02
ES434260A1 (es) 1977-03-16
CA1029444A (en) 1978-04-11
US3873925A (en) 1975-03-25
AR202957A1 (es) 1975-07-31
GB1443500A (en) 1976-07-21
NL7502540A (nl) 1975-09-09
FR2263645A1 (es) 1975-10-03
ZA7593B (en) 1976-04-28
FR2263645B1 (es) 1981-06-26
IL46395A (en) 1976-10-31

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment