DE3360479D1 - Method of and apparatus for detecting the presence of a frequency shift keyed signal - Google Patents

Method of and apparatus for detecting the presence of a frequency shift keyed signal

Info

Publication number
DE3360479D1
DE3360479D1 DE8383300253T DE3360479T DE3360479D1 DE 3360479 D1 DE3360479 D1 DE 3360479D1 DE 8383300253 T DE8383300253 T DE 8383300253T DE 3360479 T DE3360479 T DE 3360479T DE 3360479 D1 DE3360479 D1 DE 3360479D1
Authority
DE
Germany
Prior art keywords
detecting
frequency shift
shift keyed
keyed signal
signal
Prior art date
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
DE8383300253T
Other languages
English (en)
Inventor
Clarence Leonard Bennett
Robert Price
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.)
Unisys Corp
Original Assignee
Sperry 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 Sperry Corp filed Critical Sperry Corp
Application granted granted Critical
Publication of DE3360479D1 publication Critical patent/DE3360479D1/de
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals
DE8383300253T 1982-01-20 1983-01-19 Method of and apparatus for detecting the presence of a frequency shift keyed signal Expired DE3360479D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/340,941 US4423519A (en) 1982-01-20 1982-01-20 Apparatus and method for detecting the onset of a frequency shift keyed signal

Publications (1)

Publication Number Publication Date
DE3360479D1 true DE3360479D1 (en) 1985-09-12

Family

ID=23335590

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383300253T Expired DE3360479D1 (en) 1982-01-20 1983-01-19 Method of and apparatus for detecting the presence of a frequency shift keyed signal

Country Status (4)

Country Link
US (1) US4423519A (de)
EP (1) EP0084461B1 (de)
JP (1) JPS58175346A (de)
DE (1) DE3360479D1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4485448A (en) * 1982-02-26 1984-11-27 Sperry Corporation Apparatus and method for detecting the onset of a frequency shift keyed signal
US4554508A (en) * 1983-12-07 1985-11-19 American Microsystems, Incorporated Carrier detection circuit
US4761743A (en) * 1985-12-02 1988-08-02 The Singer Company Dynamic system analysis in a vibrating beam accelerometer
US5887020A (en) * 1991-05-13 1999-03-23 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5815525A (en) * 1991-05-13 1998-09-29 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5694414A (en) * 1991-05-13 1997-12-02 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5790587A (en) * 1991-05-13 1998-08-04 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5796772A (en) * 1991-05-13 1998-08-18 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5168215A (en) * 1991-11-15 1992-12-01 Lockheed Sanders, Inc. Instantaneous frequency measurement apparatus and method
US5420888A (en) * 1992-05-21 1995-05-30 International Business Machines Corporation System and method for split phase demodulation of frequency shift keyed signals
US5553099A (en) * 1994-02-10 1996-09-03 Racom Systems, Inc. FSK detector for determining an increasing time period between adjacent pulses of an FSK modulated square wave pulse train
US5742583A (en) * 1994-11-03 1998-04-21 Omnipoint Corporation Antenna diversity techniques
US5784403A (en) * 1995-02-03 1998-07-21 Omnipoint Corporation Spread spectrum correlation using saw device
US5745484A (en) * 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
US6356607B1 (en) 1995-06-05 2002-03-12 Omnipoint Corporation Preamble code structure and detection method and apparatus
US6141373A (en) 1996-11-15 2000-10-31 Omnipoint Corporation Preamble code structure and detection method and apparatus
GB0005591D0 (en) * 2000-03-09 2000-05-03 Koninkl Philips Electronics Nv Method of and receiver for detecting the presence of a data
GB0005592D0 (en) * 2000-03-09 2000-05-03 Koninkl Philips Electronics Nv Method of and a radio terminal for detecting the presence of a 2fsk signal
US6940599B1 (en) 2002-02-08 2005-09-06 Southwest Sciences Incorporated Envelope functions for modulation spectroscopy
US7154976B2 (en) * 2002-08-29 2006-12-26 Lsi Logic Corporation Frequency controller
GB0525126D0 (en) * 2005-12-09 2006-01-18 Uni I Oslo Improvements in data communications
US7653152B2 (en) * 2006-07-25 2010-01-26 Al-Eidan Abdullah A Frequency measurement system for low modulation index digital FM/PM communication
WO2009090801A1 (ja) * 2008-01-15 2009-07-23 Nagasaki University, National University Corporation 周波数検出装置、周波数検出方法、電気回路制御装置、電気回路制御方法、遅延回路および遅延回路システム
WO2011116362A1 (en) * 2010-03-18 2011-09-22 Kenneth Burns Frequency shift keying modulation and demodulation
KR101815942B1 (ko) * 2011-12-02 2018-01-09 삼성전자주식회사 엔벨로프를 검출하는 방법 및 장치
KR101922907B1 (ko) * 2012-03-29 2018-11-28 삼성전자주식회사 샘플링 신호들 간의 차이를 이용하여 엔벨로프를 검출하는 방법 및 장치
DE102012221798A1 (de) * 2012-11-28 2014-05-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Sequenzerkennung für Frequenzumtastung
US9031567B2 (en) 2012-12-28 2015-05-12 Spreadtrum Communications Usa Inc. Method and apparatus for transmitter optimization based on allocated transmission band
CN203590256U (zh) * 2013-03-25 2014-05-07 柳州铁道职业技术学院 铁路沙盘移频信号解调器
CN103916287A (zh) * 2013-12-19 2014-07-09 广西科技大学 一种基于移频发码设备智能老化监测方法
CN106357577A (zh) * 2015-07-15 2017-01-25 上海华虹集成电路有限责任公司 二进制移频键控信号的解调电路及方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189820A (en) * 1961-04-26 1965-06-15 Cutler Hammer Inc Plural channel signal receiver including signal delay means
US3636446A (en) * 1970-03-04 1972-01-18 H B Engineering Corp Receiver for detecting signals within a predetermined bandwidth
US3699445A (en) * 1970-11-02 1972-10-17 Bell Telephone Labor Inc Frequency shift keyed communication system
US4109239A (en) * 1975-09-30 1978-08-22 Scientific-Atlanta, Inc. Radio frequency alarm system including transmitting, coding and decoding circuitry
IT1059490B (it) * 1976-04-22 1982-05-31 C S E L T Spa Demodulatore numerico con interpolazione per segnali dati modulati linearmente in ampiezza
SE406815B (sv) * 1978-03-10 1979-02-26 Ericsson Telefon Ab L M Smalbandig nivadetektor for detektering av en periodisk signal bland ett antal foretredesvis periodiska signaler

Also Published As

Publication number Publication date
JPS58175346A (ja) 1983-10-14
US4423519A (en) 1983-12-27
EP0084461A1 (de) 1983-07-27
EP0084461B1 (de) 1985-08-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: UNISYS CORP. (N.D.GES.D.STAATES DELAWARE), BLUE BE

8328 Change in the person/name/address of the agent

Free format text: EISENFUEHR, G., DIPL.-ING. SPEISER, D., DIPL.-ING. RABUS, W., DR.-ING. BRUEGGE, J., DIPL.-ING., 2800 BREMEN MAIWALD, W., DIPL.-CHEM.DR., PAT.-ANWAELTE, 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee