FR2440124B1 - - Google Patents

Info

Publication number
FR2440124B1
FR2440124B1 FR7926360A FR7926360A FR2440124B1 FR 2440124 B1 FR2440124 B1 FR 2440124B1 FR 7926360 A FR7926360 A FR 7926360A FR 7926360 A FR7926360 A FR 7926360A FR 2440124 B1 FR2440124 B1 FR 2440124B1
Authority
FR
France
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.)
Expired
Application number
FR7926360A
Other versions
FR2440124A1 (fr
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.)
International Standard Electric Corp
Original Assignee
International Standard 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2440124A1 publication Critical patent/FR2440124A1/fr
Application granted granted Critical
Publication of FR2440124B1 publication Critical patent/FR2440124B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/022—Selective call receivers
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
    • G08B3/1016—Personal calling arrangements or devices, i.e. paging systems using wireless transmission
    • 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
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/18—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements
    • H03D3/20—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by means of synchronous gating arrangements producing pulses whose amplitude or duration depends on phase difference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
FR7926360A 1978-10-24 1979-10-24 Recepteur de radio pour sons modules en frequence Granted FR2440124A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7841679A GB2032737A (en) 1978-10-24 1978-10-24 Radio receiver for tone modulated signals

Publications (2)

Publication Number Publication Date
FR2440124A1 FR2440124A1 (fr) 1980-05-23
FR2440124B1 true FR2440124B1 (fr) 1983-12-30

Family

ID=10500541

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7926360A Granted FR2440124A1 (fr) 1978-10-24 1979-10-24 Recepteur de radio pour sons modules en frequence

Country Status (6)

Country Link
US (1) US4254503A (fr)
JP (1) JPS5573149A (fr)
DE (1) DE2942512A1 (fr)
FR (1) FR2440124A1 (fr)
GB (1) GB2032737A (fr)
NL (1) NL7907712A (fr)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2057820B (en) * 1979-09-04 1984-07-04 Standard Telephones Cables Ltd Radio receiver for fsk signals
GB2083977B (en) * 1980-08-26 1984-08-22 Standard Telephones Cables Ltd Single channel duplex radio system
GB2101821B (en) * 1981-07-16 1984-11-14 Standard Telephones Cables Ltd Radio receiver for frequency shift keyed signals
GB2106359B (en) * 1981-09-24 1985-07-03 Standard Telephones Cables Ltd Direct conversion radio receiver for fm signals
DE3146077C2 (de) * 1981-11-20 1985-04-04 Siemens AG, 1000 Berlin und 8000 München Einrichtung für Funkempfänger zur Unterdrückung von durch Mehrwegeausbreitung bedingten Empfangsstörungen
GB2124840A (en) * 1982-07-02 1984-02-22 Philips Electronic Associated Data demodulator for digital signals
US4475219A (en) * 1982-08-18 1984-10-02 General Electric Company Demodulator for frequency-shift-keyed binary data signals
FR2538634B1 (fr) * 1982-12-24 1985-07-19 Int Standard Electric Corp Recepteur radio-electrique a conversion directe pour signaux modules en frequence
GB2141007B (en) * 1983-06-02 1986-07-23 Standard Telephones Cables Ltd Demodulator logic for frequency shift keyed signals
JPS60100859A (ja) * 1983-11-08 1985-06-04 Nec Corp 周波数検波器
US4651107A (en) * 1984-01-11 1987-03-17 Nec Corporation Demodulator for digital FM signals
FR2559003B1 (fr) * 1984-01-31 1986-06-20 Lgt Lab Gen Telecomm Emetteur et son utilisation dans un reseau d'appel de personnes
NL8401347A (nl) * 1984-04-27 1985-11-18 Philips Nv Een fsk data ontvanger.
GB2189114B (en) * 1986-02-12 1990-03-14 Plessey Co Plc Radio receivers
US4811425A (en) * 1987-01-09 1989-03-07 Itt Avionics, A Division Of Itt Corporation Apparatus for reducing the effects of local oscillator leakage in mixers employed in zero IF receivers
US4761798A (en) * 1987-04-02 1988-08-02 Itt Aerospace Optical Baseband phase modulator apparatus employing digital techniques
DE3887204T2 (de) * 1987-05-27 1994-07-07 Fujitsu Ltd Digitales Zweirichtungsfunkübertragungssystem unter Verwendung einer einzigen Frequenz.
JPH06105917B2 (ja) * 1987-12-10 1994-12-21 国際電気株式会社 Ｆｓｋ検波回路
CA2014916C (fr) * 1989-04-20 1994-11-08 Yoichiro Minami Recepteur a conversion directe avec variation de la frequence de l'oscillateur local dans la recherche de la frequence de porteuse
GB2233535A (en) * 1989-06-30 1991-01-09 Philips Electronic Associated Radio receiver
JPH0797779B2 (ja) * 1989-08-25 1995-10-18 松下電器産業株式会社 ９０度移相器とデータ受信機
US5345187A (en) * 1992-09-11 1994-09-06 Mcguire Ronald F Dual frequency demodulation apparatus for frequency shift keyed (FSK) data signals and FM signals and method therefor
US5333151A (en) * 1992-11-23 1994-07-26 Ford Motor Company High speed frequency-shift keying decoder
GB2283844B (en) * 1993-11-13 1997-06-11 Nokia Mobile Phones Ltd Detection of pager signal in FM radio transmission
US5469112A (en) * 1994-08-15 1995-11-21 Motorola, Inc. Communication device with zero-crossing demodulator
US5453715A (en) * 1994-08-15 1995-09-26 Motorola, Inc. Communication device with efficient multi-level digital demodulator
WO1996007234A1 (fr) * 1994-08-26 1996-03-07 Motorola Inc. Dispositif de communications a generateur de passage a zero
DE59712313D1 (de) * 1996-03-02 2005-06-23 Philips Intellectual Property Erzeugung eines frequenzsteuersignals in einem fsk-empfänger
US5862466A (en) * 1997-01-09 1999-01-19 Hewlett-Packard Company Method and apparatus for automatically balancing a radio-frequency mixer
GB2328813B (en) * 1997-08-28 2001-08-29 Mitel Corp A radio frequency zero IF direct down converter
CA2281236C (fr) 1999-09-01 2010-02-09 Tajinder Manku Methodes rf de conversion directe au moyen d'un signal virtuel d'oscillateur local
US6968019B2 (en) * 2000-11-27 2005-11-22 Broadcom Corporation IF FSK receiver
US20040157571A1 (en) * 2003-02-07 2004-08-12 Klaas Wortel Enhanced register based FSK demodulator
JP4546295B2 (ja) * 2005-03-16 2010-09-15 富士通セミコンダクター株式会社 受信装置
US7983643B2 (en) * 2008-07-03 2011-07-19 Panasonic Corporation Frequency demodulation with threshold extension
JP1686932S (fr) 2020-05-22 2021-05-31
JP1686862S (fr) 2020-05-22 2021-05-31
JP1677395S (fr) 2020-05-22 2021-01-25

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1190495B (de) * 1964-05-29 1965-04-08 Telefunken Patent Schaltungsanordnung zur Demodulation frequenzumgetasteter Telegraphienachrichten
US3670242A (en) * 1969-12-03 1972-06-13 Lear Siegler Inc A selective paging receiver and decoder employing an electronic filter means
JPS5731716B2 (fr) * 1974-12-23 1982-07-06
DE2515769A1 (de) * 1975-04-10 1976-10-21 Standard Elektrik Lorenz Ag Frequenzselektiver signalempfaenger
GB1517121A (en) * 1977-01-13 1978-07-12 Standard Telephones Cables Ltd Radio receiver for fsk signals

Also Published As

Publication number Publication date
NL7907712A (nl) 1980-04-28
DE2942512A1 (de) 1980-05-08
FR2440124A1 (fr) 1980-05-23
JPS5573149A (en) 1980-06-02
US4254503A (en) 1981-03-03
GB2032737A (en) 1980-05-08

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse