CA2100444C - Am-fm combined stereo receiver - Google Patents

Am-fm combined stereo receiver

Info

Publication number
CA2100444C
CA2100444C CA002100444A CA2100444A CA2100444C CA 2100444 C CA2100444 C CA 2100444C CA 002100444 A CA002100444 A CA 002100444A CA 2100444 A CA2100444 A CA 2100444A CA 2100444 C CA2100444 C CA 2100444C
Authority
CA
Canada
Prior art keywords
mode
signal
vco
stereo
radio
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
CA002100444A
Other languages
English (en)
French (fr)
Other versions
CA2100444A1 (en
Inventor
Lawrence Marvin Ecklund
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of CA2100444A1 publication Critical patent/CA2100444A1/en
Application granted granted Critical
Publication of CA2100444C publication Critical patent/CA2100444C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/44Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • H04H20/49Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for AM stereophonic broadcast systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/06Receivers
    • H04B1/16Circuits
    • H04B1/1646Circuits adapted for the reception of stereophonic signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transmitters (AREA)
CA002100444A 1991-02-06 1992-02-04 Am-fm combined stereo receiver Expired - Fee Related CA2100444C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US651,713 1991-02-06
US07/651,713 US5239699A (en) 1991-02-06 1991-02-06 Am-fm combined stereo receiver

Publications (2)

Publication Number Publication Date
CA2100444A1 CA2100444A1 (en) 1992-08-07
CA2100444C true CA2100444C (en) 1998-11-24

Family

ID=24613917

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002100444A Expired - Fee Related CA2100444C (en) 1991-02-06 1992-02-04 Am-fm combined stereo receiver

Country Status (8)

Country Link
US (1) US5239699A (enExample)
EP (1) EP0570481B1 (enExample)
JP (1) JP2713001B2 (enExample)
AU (1) AU645408B2 (enExample)
CA (1) CA2100444C (enExample)
DE (1) DE69221850T2 (enExample)
TW (1) TW208764B (enExample)
WO (1) WO1992014311A1 (enExample)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340012B4 (de) * 1993-11-24 2004-04-22 Blaupunkt-Werke Gmbh Demodulator
US5715528A (en) * 1996-02-08 1998-02-03 Ford Motor Company Converting capacitance to inductance in a floating resonant
US6041280A (en) * 1996-03-15 2000-03-21 Sirf Technology, Inc. GPS car navigation system
US6810266B1 (en) * 1999-11-16 2004-10-26 Freescale Semiconductor, Inc. Digitally controlled radio back-end
US6473605B1 (en) * 1999-11-16 2002-10-29 Motorola, Inc. Noise reduction and range control radio system
US6473606B1 (en) * 1999-11-16 2002-10-29 Motorola, Inc. Common intermediate frequency broadcast radio front end
KR100690954B1 (ko) * 2000-01-19 2007-03-09 코닌클리케 필립스 일렉트로닉스 엔.브이. 무선 fm 수신기
WO2003026156A1 (en) * 2001-09-18 2003-03-27 Koninklijke Philips Electronics N.V. Rf signal switch for a wireless communication device
US8036402B2 (en) * 2005-12-15 2011-10-11 Harman International Industries, Incorporated Distortion compensation
US20070178863A1 (en) * 2006-01-27 2007-08-02 Tuttle G Tyson AM/FM tuner saw filter-less architecture using AM frequency band up-conversion
CN203644936U (zh) * 2010-12-30 2014-06-11 硅实验室公司 共享的am/fm天线电路以及am/fm无线电接收机系统

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665507A (en) * 1971-01-04 1972-05-23 Gen Electric Signal processor for reception of amplitude or frequency modulated signals
US4170716A (en) * 1977-10-14 1979-10-09 Motorola, Inc. AM stereo receiver with correction limiting
US4172966A (en) * 1978-02-23 1979-10-30 Motorola, Inc. AM stereophonic receiver
US4324952A (en) * 1978-08-21 1982-04-13 Harris Corporation Direct function receivers and transmitters for multichannel communications system
US4278839A (en) * 1979-08-02 1981-07-14 Motorola, Inc. Tangent function generator for AM stereo
DE3024085A1 (de) * 1980-06-27 1982-01-21 Philips Patentverwaltung Gmbh, 2000 Hamburg Am-fm-rundfunkempfaenger zum empfang von am-stereosignalen
US4388496A (en) * 1980-08-11 1983-06-14 Trio Kabushiki Kaisha FM/AM Stereo receiver
US4426728A (en) * 1981-08-31 1984-01-17 Kahn Leonard R Multiple system AM stereo receiver and pilot signal detector
US4716590A (en) * 1984-01-17 1987-12-29 Sansui Electric Co., Ltd. AM stereo transmission method and apparatus
US4872207A (en) * 1987-04-15 1989-10-03 Motorola, Inc. Automatic IF tangent lock control circuit
US5109542A (en) * 1991-02-06 1992-04-28 Motorola, Inc. AM-FM combined stereo receiver

Also Published As

Publication number Publication date
DE69221850D1 (de) 1997-10-02
WO1992014311A1 (en) 1992-08-20
JPH05114822A (ja) 1993-05-07
JP2713001B2 (ja) 1998-02-16
EP0570481A4 (enExample) 1994-01-19
CA2100444A1 (en) 1992-08-07
DE69221850T2 (de) 1998-02-12
EP0570481B1 (en) 1997-08-27
EP0570481A1 (en) 1993-11-24
TW208764B (enExample) 1993-07-01
AU645408B2 (en) 1994-01-13
AU1358192A (en) 1992-09-07
US5239699A (en) 1993-08-24

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20070205