PT87253A - Dispositivo de filtragem de um sinal de recepcao fm - Google Patents

Dispositivo de filtragem de um sinal de recepcao fm

Info

Publication number: PT87253A
Authority: PT; Portugal
Prior art keywords: pct; reception signal; filtering device; signal filtering; date oct
Prior art date: 1987-04-15

Application number

PT87253A

Other languages

English (en)

Other versions

PT87253B (pt

Inventor

Jens Hansen

Original Assignee

H U C Elektronik Gmbh

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.)

1987-04-15

Filing date

1988-04-15

Publication date

1989-05-12

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25854670&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PT87253(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1988-04-15 Application filed by H U C Elektronik Gmbh filed Critical H U C Elektronik Gmbh

1989-05-12 Publication of PT87253A publication Critical patent/PT87253A/pt

1993-09-30 Publication of PT87253B publication Critical patent/PT87253B/pt

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
- H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
- H03D3/005—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling a bandpass filter

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Noise Elimination (AREA)
Circuits Of Receivers In General (AREA)
Stereo-Broadcasting Methods (AREA)
Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Radar Systems Or Details Thereof (AREA)

PT87253A 1987-04-15 1988-04-15 Dispositivo de filtragem de um sinal de recepcao fm PT87253B (pt)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3712736		1987-04-15
DE19873724604 DE3724604A1 (de)	1987-04-15	1987-07-24	Anordnung zum filtern eines fm-ukw-empfangssignals

Publications (2)

Publication Number	Publication Date
PT87253A true PT87253A (pt)	1989-05-12
PT87253B PT87253B (pt)	1993-09-30

Family

ID=25854670

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
PT87253A PT87253B (pt)	1987-04-15	1988-04-15	Dispositivo de filtragem de um sinal de recepcao fm

Country Status (13)

Country	Link
US (2)	US5155862A (pt)
EP (2)	EP0357632B1 (pt)
JP (2)	JPH02503974A (pt)
KR (1)	KR890700963A (pt)
CN (1)	CN88102082A (pt)
AT (1)	ATE115788T1 (pt)
AU (1)	AU1579988A (pt)
BR (1)	BR8807465A (pt)
DE (3)	DE3724604A1 (pt)
IL (1)	IL86055A (pt)
MY (1)	MY103727A (pt)
PT (1)	PT87253B (pt)
WO (2)	WO1988008222A1 (pt)

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DE3818750A1 (de) *	1988-05-30	1989-12-14	H U C Elektronik Gmbh	Fm-empfangsteil
DE3818752A1 (de) *	1988-05-30	1989-12-07	H U C Elektronik Gmbh	Fm-empfangsteil
DE3818749A1 (de) *	1988-05-30	1989-12-21	H U C Elektronik Gmbh	Fm-empfangsteil
DE3818748A1 (de) *	1988-05-30	1989-12-21	H U C Elektronik Gmbh	Fm-empfangsteil
DE3818753A1 (de) *	1988-05-30	1989-12-21	H U C Elektronik Gmbh	Fm-empfangsteil
DE3818751A1 (de) *	1988-05-30	1989-12-07	H U C Elektronik Gmbh	Fm-empfangsteil
US5287556A (en) *	1990-09-28	1994-02-15	Motorola, Inc.	Interference reduction using an adaptive receiver filter, signal strength, and BER sensing
TW228043B (pt) *	1992-06-26	1994-08-11	Philips Electronics Nv
TW263640B (pt) *	1992-06-26	1995-11-21	Philips Electronics Nv
TW274665B (pt) *	1992-06-26	1996-04-21	Philips Electronics Nv
GB2270223B (en) *	1992-08-29	1996-06-19	Motorola Israel Ltd	A communications system
DE4239759C2 (de) *	1992-11-26	2001-08-16	Atmel Germany Gmbh	Verfahren zum Umschalten auf eine empfangswürdige Alternativfrequenz eines RDS-Empfängers
EP0599330B1 (en) *	1992-11-27	1996-06-26	CLARION Co., Ltd.	RDS receiver
DE4324603A1 (de) *	1993-07-22	1995-01-26	Becker Gmbh	IF-Filteranorndung in einem Empfänger für FM-Empfangssignale
US5668837A (en) *	1993-10-14	1997-09-16	Ericsson Inc.	Dual-mode radio receiver for receiving narrowband and wideband signals
AU678626B2 (en) *	1993-10-14	1997-06-05	Ericsson Ge Mobile Communications Inc.	Adaptive bandwidth receiver
US5465410A (en) *	1994-11-22	1995-11-07	Motorola, Inc.	Method and apparatus for automatic frequency and bandwidth control
US5757684A (en) *	1995-11-17	1998-05-26	Rincon Research Corporation	Adaptive co-channel interference canceler using spectral symmetry
DE19546406C1 (de) *	1995-12-12	1997-05-22	Becker Gmbh	Filteranordnung für einen FM-Empfänger
US5949832A (en) *	1996-03-26	1999-09-07	Sicom, Inc.	Digital receiver with tunable analog filter and method therefor
JP3831977B2 (ja) *	1996-05-24	2006-10-11	ソニー株式会社	等価可変抵抗回路
US6633550B1 (en)	1997-02-20	2003-10-14	Telefonaktiebolaget Lm Ericsson (Publ)	Radio transceiver on a chip
US6178314B1 (en)	1997-06-27	2001-01-23	Visteon Global Technologies, Inc.	Radio receiver with adaptive bandwidth controls at intermediate frequency and audio frequency sections
US6058148A (en) *	1997-06-27	2000-05-02	Ford Motor Company	Digital processing radio receiver with adaptive bandwidth control
US6295324B1 (en)	1997-12-10	2001-09-25	Visteon Global Technologies, Inc.	Signal quality measurement using full-complex FM detector
US6445735B1 (en)	1999-02-08	2002-09-03	Visteon Global Technologies, Inc.	Switched bandwidth digital filters with reduced transients during switching
US6393450B1 (en)	1999-08-25	2002-05-21	Visteon Global Technologies, Inc.	Switched bandwidth digital filters with slewing
US6694131B1 (en)	2001-02-21	2004-02-17	Mitsubishi Electric Corporation	Method and apparatus for adaptive image rejection
GB2394847B (en) *	2002-11-02	2005-09-07	Zarlink Semiconductor Ltd	Digital receiver
US7092465B2 (en)	2002-11-14	2006-08-15	Freescale Semiconductor, Inc.	Method and apparatus for processing an amplitude modulated (AM) signal
US7440760B2 (en) *	2003-03-31	2008-10-21	Lucent Technologies Inc.	Methods and apparatus for allocating bandwidth to communication devices based on signal conditions experienced by the communication devices
US7761067B1 (en)	2003-05-15	2010-07-20	Marvell International Ltd.	Iterative filter circuit calibration
US6968164B2 (en) *	2003-05-19	2005-11-22	Visteon Global Technologies, Inc.	Method of controlling filter bandwidth in a radio receiver for a duplicative broadcast signal
JP4263123B2 (ja) *	2004-03-23	2009-05-13	三洋電機株式会社	信号処理回路
US7272375B2 (en)	2004-06-30	2007-09-18	Silicon Laboratories Inc.	Integrated low-IF terrestrial audio broadcast receiver and associated method
JP4208864B2 (ja) *	2005-06-30	2009-01-14	日本テキサス・インスツルメンツ株式会社	チューナー用半導体装置及びダイバーシティ受信機
US7729679B1 (en)	2006-06-09	2010-06-01	Marvell International Ltd.	Dynamic bandwidth filter for an FM receiver
US8131247B2 (en) *	2009-05-20	2012-03-06	Broadcom Corporation	Method and system for an intermediate frequency (IF) channel select filter with an integrated alternate adjacent channel interference (AACI) filter
CN103888101A (zh) *	2014-04-04	2014-06-25	武汉凡谷电子技术股份有限公司	一种滤波器纹波及群时延波动补偿方法
US9455853B2 (en) *	2014-12-30	2016-09-27	Stmicroelectronics, Inc.	Device and method for FM demodulation with threshold extension

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NL67099C (pt) *	1940-06-29
GB903401A (en)	1957-12-12	1962-08-15	Borg Warner	Fuel injection pump
US2927997A (en) *	1959-01-08	1960-03-08	James R Day	Frequency modulation receiver
US3541451A (en) *	1967-12-26	1970-11-17	Magnavox Co	Variable center frequency filter for frequency modulation receiver
US4081771A (en) *	1976-12-06	1978-03-28	Zenith Radio Corporation	82 Detent manual varactor tuning system
US4356567A (en) *	1977-06-28	1982-10-26	Pioneer Electronic Corporation	Radio receiver with bandwidth switching
US4352208A (en) *	1980-03-04	1982-09-28	Motorola, Inc.	Automatic IF selectivity for radio receiver system
US4385402A (en) *	1980-04-16	1983-05-24	Redifon Telecommunications Limited	Switchable filter circuits
FR2490427B1 (fr) *	1980-09-16	1986-04-18	Thomson Csf	Demodulateur d'un signal module en frequence et systeme de television comportant un tel demodulateur
DE3048263A1 (de) *	1980-12-20	1982-07-29	Blaupunkt-Werke Gmbh, 3200 Hildesheim	Rundfunkempfangsgeraet
DE3175644D1 (en) *	1981-08-31	1987-01-08	Oki Electric Ind Co Ltd	High-sensitivity fm signal demodulation system
DE3137843A1 (de) *	1981-09-23	1983-03-31	Robert Bosch Gmbh, 7000 Stuttgart	Filter- und demodulationsschaltung
US4406019A (en) *	1981-11-16	1983-09-20	The Bendix Corporation	Selectivity means in amplitude modulated radio receivers
DE3147493C2 (de) *	1981-12-01	1986-04-03	Robert Bosch Gmbh, 7000 Stuttgart	Filter- und Demodulationsschaltung
CA1196966A (en) *	1982-03-23	1985-11-19	Kouzou Kage	Interference wave detection circuit for use in radio receiver
JPS59185433A (ja) *	1983-04-06	1984-10-22	Trio Kenwood Corp	Ａｍ受信機
JPS6172418A (ja) *	1984-09-17	1986-04-14	Alps Electric Co Ltd	衛星放送用受信機
DE3438286A1 (de) *	1984-10-16	1986-04-17	Hansen/Catito Elektronik, 1000 Berlin	Verfahren und schaltungsanordnung zum umsetzen frequenzmodulierter signale ueber mindestens eine zwischenfrequenz in niederfrequenzsignale

1987
- 1987-07-24 DE DE19873724604 patent/DE3724604A1/de not_active Withdrawn
1988
- 1988-04-13 IL IL86055A patent/IL86055A/xx unknown
- 1988-04-13 MY MYPI88000368A patent/MY103727A/en unknown
- 1988-04-15 JP JP63503022A patent/JPH02503974A/ja active Pending
- 1988-04-15 BR BR888807465A patent/BR8807465A/pt unknown
- 1988-04-15 CN CN198888102082A patent/CN88102082A/zh active Pending
- 1988-04-15 PT PT87253A patent/PT87253B/pt not_active IP Right Cessation
- 1988-04-15 AT AT88903180T patent/ATE115788T1/de active
- 1988-04-15 US US07/427,850 patent/US5155862A/en not_active Expired - Fee Related
- 1988-04-15 DE DE88903179T patent/DE3886531D1/de not_active Expired - Fee Related
- 1988-04-15 WO PCT/DE1988/000235 patent/WO1988008222A1/de not_active Application Discontinuation
- 1988-04-15 AU AU15799/88A patent/AU1579988A/en not_active Abandoned
- 1988-04-15 EP EP88903179A patent/EP0357632B1/de not_active Revoked
- 1988-04-15 JP JP63503021A patent/JPH02503137A/ja active Pending
- 1988-04-15 US US07/427,844 patent/US5159709A/en not_active Expired - Fee Related
- 1988-04-15 WO PCT/DE1988/000236 patent/WO1988008223A1/de not_active Application Discontinuation
- 1988-04-15 DE DE3852486T patent/DE3852486D1/de not_active Expired - Fee Related
- 1988-04-15 EP EP88903180A patent/EP0358649B1/de not_active Revoked
- 1988-12-15 KR KR1019880701667A patent/KR890700963A/ko not_active Application Discontinuation

Also Published As

Publication number	Publication date
CN88102082A (zh)	1988-12-21
JPH02503974A (ja)	1990-11-15
EP0358649A1 (de)	1990-03-21
EP0357632A1 (de)	1990-03-14
EP0357632B1 (de)	1993-12-22
KR890700963A (ko)	1989-04-28
DE3886531D1 (de)	1994-02-03
PT87253B (pt)	1993-09-30
JPH02503137A (ja)	1990-09-27
BR8807465A (pt)	1990-05-22
ATE115788T1 (de)	1994-12-15
DE3852486D1 (de)	1995-01-26
EP0358649B1 (de)	1994-12-14
DE3724604A1 (de)	1988-12-01
IL86055A (en)	1992-11-15
MY103727A (en)	1993-09-30
AU1579988A (en)	1988-11-04
WO1988008222A1 (en)	1988-10-20
US5159709A (en)	1992-10-27
US5155862A (en)	1992-10-13
WO1988008223A1 (en)	1988-10-20
IL86055A0 (en)	1988-09-30

Publication	Publication Date	Title
PT87253A (pt)	1989-05-12	Dispositivo de filtragem de um sinal de recepcao fm
AU687156B2 (en)	1998-02-19	Process and device for detecting vital functions in living bodies
EP0235662A3 (en)	1990-01-17	Optical transmitter comprising an optical frequency discriminator
ES2115514A1 (es)	1998-06-16	Metodo y aparato para identificar canales de señalizacion.
FI951844A (fi)	1995-04-18	Siirtoverkko ja sen suodatin
DE69005905D1 (de)	1994-02-24	Empfänger für terrestrische AM- und Satelliten-FM-Fernsehsignale.
EP0428226A3 (en)	1993-01-13	Receiver with direct quadrature sampling of the input signal
SG44868A1 (en)	1997-12-19	Fm receiver with dynamic intermediate frequency (if) filter tuning
AU7330687A (en)	1987-11-26	Transmitter/receiver apparatus
NO175128C (no)	1994-08-31	Frekvenslåsekrets (AFC) for mottaker
DE3468598D1 (en)	1988-02-11	Digital sub-band filters
EP0378301A3 (en)	1990-12-12	Transmitter/receiver apparatus
EP0413934A3 (en)	1992-06-03	Transmission line frequency equalizer
FR2385260A1 (fr)	1978-10-20	Dispositif de filtrage d'un signal limite en amplitude
AU589088B2 (en)	1989-09-28	Noise detection by sampling digital baseband signal at eye openings
BR8303365A (pt)	1984-02-07	Detector de tom e receptor de frequencias multiplas utilizando esse detector
ES8707056A1 (es)	1987-07-01	Un circuito para proporcionar aislamiento entre dos canales de comunicacion especialmente en telefonos de manos libres
MY130499A (en)	2007-06-29	Radio receiver
EP0420448A3 (en)	1992-06-03	Multi-system am stereo receiver having preferred mode of operation
IT1212744B (it)	1989-11-30	Circuito per l'attenuazione dei disturbi in un radioricevitore mediante l'impiego di un filtro passa-basso a banda passante regolabile.
CA2055309A1 (en)	1992-05-16	Apparatus for the optical heterodyne reception of signals
FR2665809B1 (fr)	1994-05-13	Dispositif d'amelioration de la qualite de signaux electriques, electro-acoustiques et/ou video.
EP0492302A3 (en)	1994-06-15	System for filtering signals of high and low frequency bands, relevant implementation device
ES8606764A1 (es)	1986-04-01	Un receptor de television, capaz de recibir dos transmisiones estandar diferentes
ES2121903T3 (es)	1998-12-16	Metodo para transferir, por medio de un sistema de radioenlace señales radiofonicas para la emision de isofrecuencia.

Legal Events

Date	Code	Title	Description
1993-09-30	FG3A	Patent granted, date of granting	Effective date: 19930303
1998-01-30	MM3A	Annulment or lapse	Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 19970930

Date

Code

Title

Description

1993-09-30

FG3A

Patent granted, date of granting

Effective date: 19930303

1998-01-30

MM3A

Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19970930