KR830003994A - 평균 잡음레벨을 탐지하는 노이즈 블래커(Noise blanker) - Google Patents
평균 잡음레벨을 탐지하는 노이즈 블래커(Noise blanker) Download PDFInfo
- Publication number
- KR830003994A KR830003994A KR1019800001548A KR800001548A KR830003994A KR 830003994 A KR830003994 A KR 830003994A KR 1019800001548 A KR1019800001548 A KR 1019800001548A KR 800001548 A KR800001548 A KR 800001548A KR 830003994 A KR830003994 A KR 830003994A
- Authority
- KR
- South Korea
- Prior art keywords
- noise
- signal
- pulse
- response
- detection signal
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
-
- 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
- H03G3/345—Muting during a short period of time when noise pulses are detected, i.e. blanking
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 지침에 따라 도시된 노이즈 블래커 회로를 이용한 라디오 수신기의 블록다이어그램. 제2도는 제1도에서 도시된 노이즈 블래커회로를 위한 안테나 실시예의 블록다이어그램.
Claims (1)
- 배경잡음과 임펄스에 의해 잡음을 동반하는 정보신호를 포함하는 임력신호를 수신하기 위한 단자(17)과, 상기 입력신호를 수신하고 상기 정보신호와는 실질상 무관한 상기 배경잡음과 임펄스 잡음에 관련된 피크치를 갖는 잡음 검파신호(27)를발생하기 위하여 상기 단자에 연결된 잡음 검솔기(26)과, 상기 잡음검출신호(27)을 수신하고, 이에 응답하여 잡음 귀선소거펄스(47)을 발생하기 위한 상기 잡음 검출기(26)에 연결된 귀선소거 발생기(30)과, 상기 입력신호와 상기 잡음 귀선소거펄스를 수신하고 상기 잡음귀선소거펄스에 응답하여 상기 입력신호를 선택적으로 통과하고 저지하기 위한, 상기 단자(17)과 상기 귀선소거펄스 발생기(30)에 연결된 제어게이트(18,20)으로 구성한 노이즈 블래커회로에 있어서, 상기 귀선소거펄스발진기는 상기 잡음 검파신호(27)을 수신하고, 상기 잡음 검파신호에 응하여 그리고 상기 잡음 검파신호(27)의 평균 피크 크기에 따라 상기 잡음 증폭기 이득을 조절함에 의해 제1소정레벨(33:54)에 실질상 유지되는 피크 크기를 가지는 증폭 잡음 출력 신호(32,36:51)을 출력단자 B에 발생하기 위한 잡음 증폭기(31,35,37,40,39:31,50,52,53,59)와, 상기 제1예정레벨(33:54) 보다 절대 크기에 있어서 더 큰 제2소정레벨(43:56)을 초과하는 상기 증폭된 출력신호에 응하여 상기 귀선소거펄스(47)을 발생하고, 상기 증폭출력신호(32,36:51)을 수신하기 위한 드레시 호올드 스위치 장치(40,41,44:53,41,44)로 결합되었고, 그것에 의해 상기 잡음 검파신호의 평균 피크치를 실질 상변하지 않는 종종 커다란 임펄스잡음이 잡음 증폭기 이득이, 이러한 큰 잡음 임펄스에 응하여 실질상 변하지 않기 때문에, 귀선소거펄스를 발생하게 되는 특징을 가진 수신 정보신호내에 임펄스 잡음을 제거하기 위한 노이즈 블랭커회로.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US3262579A | 1979-04-23 | 1979-04-23 | |
US032625 | 1979-04-23 | ||
US32625 | 1998-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR830003994A true KR830003994A (ko) | 1983-06-30 |
KR830002234B1 KR830002234B1 (ko) | 1983-10-20 |
Family
ID=21865935
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019800001548A KR830002234B1 (ko) | 1979-04-23 | 1980-04-15 | 평균 잡음 레벨을 탐지하는 노이즈 블랭커 |
Country Status (7)
Country | Link |
---|---|
US (1) | US4327446A (ko) |
EP (1) | EP0018716A3 (ko) |
JP (1) | JPS55143844A (ko) |
KR (1) | KR830002234B1 (ko) |
BR (1) | BR8002141A (ko) |
CA (1) | CA1176336A (ko) |
MX (1) | MX148402A (ko) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3130341A1 (de) * | 1980-09-17 | 1982-06-16 | Hitachi, Ltd., Tokyo | Rauschsperre und mit dieser versehener fm-funkempfaenger |
US4450573A (en) * | 1981-12-07 | 1984-05-22 | Motorola Inc. | Bit data operated squelch |
US4521917A (en) * | 1983-11-14 | 1985-06-04 | General Electric Company | Noise blanking circuit and method |
US4617474A (en) * | 1984-06-27 | 1986-10-14 | Jason Barry L | Signal detector |
US4675863A (en) | 1985-03-20 | 1987-06-23 | International Mobile Machines Corp. | Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels |
EP0208425A3 (en) * | 1985-06-13 | 1988-01-13 | Devon County Council | Television sub-carrier transmission |
US4637066A (en) * | 1985-07-02 | 1987-01-13 | General Motors Corporation | Noise blanking signal generator for AM radio |
US4843626A (en) * | 1986-07-10 | 1989-06-27 | Werrbach Donn R | Multiband limiter with automatic limiting threshold (ALT) compensation |
US4825448A (en) * | 1986-08-07 | 1989-04-25 | International Mobile Machines Corporation | Subscriber unit for wireless digital telephone system |
FR2623672A1 (fr) * | 1987-11-19 | 1989-05-26 | Alcatel Thomson Radiotelephone | Dispositif d'amelioration du confort d'ecoute par suppression des phenomenes transitoires dans une chaine de reception d'un equipement fm/pm a bande etroite, notamment en radiotelephonie |
US5170489A (en) * | 1988-11-30 | 1992-12-08 | Ellis Glazebrook | Noise blanker with continuous wave interference compensation |
US4965854A (en) * | 1988-11-30 | 1990-10-23 | General Electric Company | Noise blanker with continuous wave interference compensation |
EP0597525A1 (en) * | 1992-11-09 | 1994-05-18 | Koninklijke Philips Electronics N.V. | Device for detecting pulsatory interference signals |
US5389912A (en) * | 1993-02-10 | 1995-02-14 | Arvin; Parham P. | Truck clearance anti-collision device |
US5546383A (en) | 1993-09-30 | 1996-08-13 | Cooley; David M. | Modularly clustered radiotelephone system |
DE69835529T2 (de) * | 1997-11-03 | 2007-01-18 | Harris Corp., Melbourne | Rekonfigurierbarer funksystemaufbau |
US6577851B1 (en) * | 1999-11-16 | 2003-06-10 | Motorola, Inc. | Impulse noise blanker |
US8583427B2 (en) * | 1999-11-18 | 2013-11-12 | Broadcom Corporation | Voice and data exchange over a packet based network with voice detection |
US6775526B2 (en) * | 2000-12-01 | 2004-08-10 | Microchip Technology Incorporated | Modulated input signal filter |
EP1271771B1 (en) * | 2001-06-28 | 2006-08-09 | STMicroelectronics GmbH | Method and apparatus for removing noise spikes |
US20080204379A1 (en) * | 2007-02-22 | 2008-08-28 | Microsoft Corporation | Display with integrated audio transducer device |
US7805120B2 (en) * | 2007-04-17 | 2010-09-28 | Delphi Technologies, Inc. | Noise blanker circuit and method for removing noise and correcting a signal |
EP3182164B1 (en) * | 2015-12-15 | 2018-07-04 | Airbus Defence and Space GmbH | Noise distribution shaping for signals, particularly cdma signals, with mitigation of artifact signals |
US10085067B2 (en) | 2016-01-12 | 2018-09-25 | Ppc Broadband, Inc. | Network interface device with dynamic noise conditioning |
CA3012728A1 (en) | 2016-01-29 | 2017-08-03 | Ppc Broadband, Inc. | Dynamic noise mitigation device |
US10476608B2 (en) | 2017-07-27 | 2019-11-12 | Ppc Broadband, Inc. | Network interface devices with upstream noise suppressors |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3098872A (en) * | 1958-03-06 | 1963-07-23 | Deere & Co | Production of nitrourea |
US3098972A (en) * | 1961-10-10 | 1963-07-23 | Howard James Wesley | Transistorized pulse gate noise limiter |
US3191124A (en) * | 1961-10-30 | 1965-06-22 | Avco Corp | Amplitude noise control gate |
US3188571A (en) * | 1962-11-28 | 1965-06-08 | Collins Radio Co | Detected noise actuated, agc noisequieting action dependent, and total noise level adaptive rf receiver squelch system |
NL145420B (nl) * | 1969-10-25 | 1975-03-17 | Philips Nv | Schakeling voor het onderdrukken van storingen in een fm radio-ontvanger. |
US3588705A (en) * | 1969-11-12 | 1971-06-28 | Nasa | Frequency-modulation demodulator threshold extension device |
US3623144A (en) * | 1970-05-13 | 1971-11-23 | Motorola Inc | Impulse noise-blanking system employing field effect transistors |
US3699457A (en) * | 1971-08-11 | 1972-10-17 | Motorola Inc | Noise blanker circuit including rate bias and rate shutoff circuitry and audio blanking |
DE2512412C3 (de) * | 1975-03-21 | 1979-02-01 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Schaltungsanordnung zum Unterdrücken von Störungen in einem FM-Rundfunkempfänger |
DE2633000A1 (de) * | 1976-07-22 | 1978-01-26 | Blaupunkt Werke Gmbh | Rundfunkempfaenger mit stoerimpulsaustastung |
GB1578374A (en) * | 1976-11-08 | 1980-11-05 | Clarion Co Ltd | Noise reduction in audio reproducing systems |
-
1980
- 1980-03-19 CA CA000347925A patent/CA1176336A/en not_active Expired
- 1980-03-26 EP EP80300936A patent/EP0018716A3/en not_active Withdrawn
- 1980-04-08 BR BR8002141A patent/BR8002141A/pt unknown
- 1980-04-15 KR KR1019800001548A patent/KR830002234B1/ko active
- 1980-04-21 MX MX182032A patent/MX148402A/es unknown
- 1980-04-22 JP JP5408680A patent/JPS55143844A/ja active Pending
- 1980-08-12 US US06/177,341 patent/US4327446A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0018716A3 (en) | 1981-02-11 |
KR830002234B1 (ko) | 1983-10-20 |
JPS55143844A (en) | 1980-11-10 |
EP0018716A2 (en) | 1980-11-12 |
CA1176336A (en) | 1984-10-16 |
BR8002141A (pt) | 1980-11-25 |
US4327446A (en) | 1982-04-27 |
MX148402A (es) | 1983-04-18 |
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