DE69617075T2 - Verfahren und Schaltungsanordnung zur Demodulation von frequenzumgetasteten (FSK-)Signalen - Google Patents

Verfahren und Schaltungsanordnung zur Demodulation von frequenzumgetasteten (FSK-)Signalen

Info

Publication number
DE69617075T2
DE69617075T2 DE69617075T DE69617075T DE69617075T2 DE 69617075 T2 DE69617075 T2 DE 69617075T2 DE 69617075 T DE69617075 T DE 69617075T DE 69617075 T DE69617075 T DE 69617075T DE 69617075 T2 DE69617075 T2 DE 69617075T2
Authority
DE
Germany
Prior art keywords
fsk
signals
circuit arrangement
frequency shift
shift keyed
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 - Fee Related
Application number
DE69617075T
Other languages
English (en)
Other versions
DE69617075D1 (de
Inventor
David Philip Laude
John Francis Kennedy
Luke Aaron Perkins
Scott Owen Campbell
Lawrence Peter Kirk
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.)
Ford Motor Co
Original Assignee
Ford Motor Co
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 Ford Motor Co filed Critical Ford Motor Co
Application granted granted Critical
Publication of DE69617075D1 publication Critical patent/DE69617075D1/de
Publication of DE69617075T2 publication Critical patent/DE69617075T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1566—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using synchronous sampling
DE69617075T 1995-03-24 1996-02-19 Verfahren und Schaltungsanordnung zur Demodulation von frequenzumgetasteten (FSK-)Signalen Expired - Fee Related DE69617075T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/409,397 US5483193A (en) 1995-03-24 1995-03-24 Circuit for demodulating FSK signals

Publications (2)

Publication Number Publication Date
DE69617075D1 DE69617075D1 (de) 2002-01-03
DE69617075T2 true DE69617075T2 (de) 2002-07-18

Family

ID=23620318

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69617075T Expired - Fee Related DE69617075T2 (de) 1995-03-24 1996-02-19 Verfahren und Schaltungsanordnung zur Demodulation von frequenzumgetasteten (FSK-)Signalen

Country Status (5)

Country Link
US (1) US5483193A (de)
EP (1) EP0734138B1 (de)
JP (1) JPH08288969A (de)
CA (1) CA2171042A1 (de)
DE (1) DE69617075T2 (de)

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US5790014A (en) * 1997-04-21 1998-08-04 Ford Motor Company Charging a transponder in a security system
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US6061551A (en) * 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US6542722B1 (en) * 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US7039372B1 (en) * 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6853690B1 (en) * 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6879817B1 (en) * 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US6873836B1 (en) * 1999-03-03 2005-03-29 Parkervision, Inc. Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology
US7110444B1 (en) * 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
US7082171B1 (en) * 1999-11-24 2006-07-25 Parkervision, Inc. Phase shifting applications of universal frequency translation
US7292835B2 (en) * 2000-01-28 2007-11-06 Parkervision, Inc. Wireless and wired cable modem applications of universal frequency translation technology
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7010559B2 (en) * 2000-11-14 2006-03-07 Parkervision, Inc. Method and apparatus for a parallel correlator and applications thereof
US7454453B2 (en) * 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US7072427B2 (en) * 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7460584B2 (en) * 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
JP3882781B2 (ja) * 2002-08-01 2007-02-21 株式会社デンソー 復調方法及び復調器
TWI280690B (en) * 2003-03-18 2007-05-01 Tdk Corp Electronic device for wireless communications and reflector device for wireless communication cards
JP4349866B2 (ja) * 2003-09-02 2009-10-21 三洋電機株式会社 Ｆｓｋ信号復調回路
DE602004027532D1 (de) * 2003-12-09 2010-07-15 Intelleflex Corp Batterieaktivierungsschaltung
JP4840078B2 (ja) * 2006-10-26 2011-12-21 パナソニック電工株式会社 Ｆｓｋ受信装置
US7816979B2 (en) * 2007-10-16 2010-10-19 On Semiconductor Trading Ltd. Configurable demodulator and demodulation method
CN103338174B (zh) * 2013-06-25 2016-04-06 浙江大学 一种应答器数据时钟的发生装置
US10797921B2 (en) * 2019-02-12 2020-10-06 Texas Instruments Incorporated Threshold computation circuit for S-FSK receiver, integrated circuit, and method associated therewith

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US3470478A (en) * 1964-08-21 1969-09-30 Robertshaw Controls Co Fsk and psk wave receiver
US3543172A (en) * 1968-09-19 1970-11-24 Anderson Jacobson Inc Digital frequency discriminator
US3571712A (en) * 1969-07-30 1971-03-23 Ibm Digital fsk/psk detector
US3601710A (en) * 1969-08-22 1971-08-24 Bell Telephone Labor Inc Digital detector for binary fsk signaling
US3670250A (en) * 1970-05-26 1972-06-13 Tel Tech Corp Fm system for receiving binary information
US3739288A (en) * 1970-10-08 1973-06-12 Mohawk Data Sciences Corp Demodulating circuit employing phase shifting techniques
US3729587A (en) * 1971-07-12 1973-04-24 Bendix Corp Voltage tunable frequency threshold circuit
US3743775A (en) * 1972-01-12 1973-07-03 Collins Radio Co Data demodulator apparatus
US3794928A (en) * 1973-04-18 1974-02-26 Collins Radio Co Frequency shift keyed demodulator
US3899741A (en) * 1973-11-12 1975-08-12 Cermetek Inc Frequency shift keyed detector
US3908169A (en) * 1974-03-22 1975-09-23 Bell Telephone Labor Inc Frequency shift demodulator having a variable clock rate
US3993868A (en) * 1974-08-19 1976-11-23 Rca Corporation Minimum shift keying communication system
US4335354A (en) * 1980-04-04 1982-06-15 Robinton Products, Inc. Sensitive demodulator for frequency shift keyed carrier signals
US4485347A (en) * 1980-09-04 1984-11-27 Mitsubishi Denki Kabushiki Kaisha Digital FSK demodulator
US4475219A (en) * 1982-08-18 1984-10-02 General Electric Company Demodulator for frequency-shift-keyed binary data signals
US4472816A (en) * 1982-09-15 1984-09-18 Gen Rad, Inc. FSK Discriminator
US4529941A (en) * 1982-11-29 1985-07-16 Arthur D. Little, Inc. FSK Demodulator utilizing multiple-phase reference frequencies
JPS60100859A (ja) * 1983-11-08 1985-06-04 Nec Corp 周波数検波器
US4574247A (en) * 1984-05-21 1986-03-04 Multi-Elmac Company FM Signal demodulator
US4568882A (en) * 1984-10-01 1986-02-04 National Semiconductor Corporation Digital FSK demodulator circuit
JPS6468161A (en) * 1987-09-09 1989-03-14 Man Design Co Fsk demodulator
US4785255A (en) * 1987-11-23 1988-11-15 Allen-Bradley Company, Inc. Digital FSK signal demodulator
US4926444A (en) * 1988-04-29 1990-05-15 Scientific-Atlanta, Inc. Data transmission method and apparatus by period shift keying (TSK)
GB2264614B (en) * 1992-02-20 1996-03-20 Motorola Israel Ltd FSK demodulator
US5333151A (en) * 1992-11-23 1994-07-26 Ford Motor Company High speed frequency-shift keying decoder

Also Published As

Publication number Publication date
JPH08288969A (ja) 1996-11-01
US5483193A (en) 1996-01-09
EP0734138A1 (de) 1996-09-25
EP0734138B1 (de) 2001-11-21
CA2171042A1 (en) 1996-09-25
DE69617075D1 (de) 2002-01-03

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Legal Events

Date Code Title Description
8320 Willingness to grant licences declared (paragraph 23)
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee