JPH0544209B2 - - Google Patents

Info

Publication number
JPH0544209B2
JPH0544209B2 JP89210095A JP21009589A JPH0544209B2 JP H0544209 B2 JPH0544209 B2 JP H0544209B2 JP 89210095 A JP89210095 A JP 89210095A JP 21009589 A JP21009589 A JP 21009589A JP H0544209 B2 JPH0544209 B2 JP H0544209B2
Authority
JP
Japan
Prior art keywords
signal
level
filter
detection
detection 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 - Fee Related
Application number
JP89210095A
Other languages
English (en)
Japanese (ja)
Other versions
JPH02186723A (ja
Inventor
Takashi Hyama
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.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Publication of JPH02186723A publication Critical patent/JPH02186723A/ja
Publication of JPH0544209B2 publication Critical patent/JPH0544209B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/24—Automatic control in frequency-selective amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B2001/1054—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal by changing bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Noise Elimination (AREA)
  • Circuits Of Receivers In General (AREA)
JP1210095A 1988-08-25 1989-08-16 受信機 Granted JPH02186723A (ja)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP20949288 1988-08-25
JP63-209492 1988-08-25
JP63-230136 1988-09-16
JP23013688 1988-09-16

Publications (2)

Publication Number Publication Date
JPH02186723A JPH02186723A (ja) 1990-07-23
JPH0544209B2 true JPH0544209B2 (US06633600-20031014-M00021.png) 1993-07-05

Family

ID=26517488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1210095A Granted JPH02186723A (ja) 1988-08-25 1989-08-16 受信機

Country Status (5)

Country Link
US (1) US5095534A (US06633600-20031014-M00021.png)
JP (1) JPH02186723A (US06633600-20031014-M00021.png)
CA (1) CA1312922C (US06633600-20031014-M00021.png)
GB (1) GB2222332B (US06633600-20031014-M00021.png)
HK (1) HK101793A (US06633600-20031014-M00021.png)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE37141E1 (en) 1984-09-10 2001-04-17 Spectrum Information Technologies, Inc. Cellular telephone data communication system and method
US4697281A (en) 1986-03-14 1987-09-29 Spectrum Cellular Communications Corporation, Inc. Cellular telephone data communication system and method
USRE38645E1 (en) 1989-01-19 2004-11-02 Mlr, Llc Portable hybrid communication system and methods
US5263187A (en) * 1989-07-15 1993-11-16 U.S. Philips Corporation Automatic gain control circuit
DE4005272A1 (de) * 1990-02-20 1991-08-22 Bosch Gmbh Robert Verfahren zur zf-bandbreitenumschaltung sowie zf-bandbreitenumschaltvorrichtung
US5127041A (en) * 1990-06-01 1992-06-30 Spectrum Information Technologies, Inc. System and method for interfacing computers to diverse telephone networks
WO1992007422A1 (en) * 1990-10-10 1992-04-30 Motorola, Inc. Active filter circuit
WO1992006786A1 (en) * 1990-10-22 1992-04-30 Motorola, Inc. Selective call receiver with decoder controlled filters
DE4208605A1 (de) * 1992-03-18 1993-09-23 Blaupunkt Werke Gmbh Schaltungsanordnung zur nachbarkanalerkennung und -unterdrueckung in einem rundfunkempfaenger
DE4319457C2 (de) * 1993-06-11 1997-09-04 Blaupunkt Werke Gmbh Schaltungsanordnung zur Nachbarkanalerkennung und -unterdrückung in einem FM-Rundfunkempfänger
JPH0766744A (ja) * 1993-08-30 1995-03-10 Nec Corp 電界検出回路
US5668837A (en) * 1993-10-14 1997-09-16 Ericsson Inc. Dual-mode radio receiver for receiving narrowband and wideband signals
WO1995010889A1 (en) * 1993-10-14 1995-04-20 Ericsson Ge Mobile Communications Inc. Adaptive bandwidth receiver
SG64868A1 (en) * 1993-12-21 1999-05-25 Thomson Consumer Electronics Microcomputer-based carrier detection system for a cordless telephone
DE19531032A1 (de) * 1995-08-23 1997-02-27 Hwa Lin Electronic Co Tuner für direkten Satellitenempfang
GB2356305B (en) * 1996-07-11 2001-07-25 Nec Corp Portable telephone capable of decreasing noise
US5983080A (en) * 1997-06-03 1999-11-09 At & T Corp Apparatus and method for generating voice signals at a wireless communications station
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
DE19908855A1 (de) * 1999-03-01 2000-09-07 Delphi Tech Inc Rundfunkempfangsvorrichtung und Verfahren zum Steuern einer Rundfunkempfangsvorrichtung
WO2000077939A1 (en) 1999-06-16 2000-12-21 Koninklijke Philips Electronics N.V. Fm receiver with bandwidth control means
DE10106071C1 (de) * 2001-02-09 2002-07-11 Harman Becker Automotive Sys Fernsehempfänger
US6993311B2 (en) * 2002-02-20 2006-01-31 Freescale Semiconductor, Inc. Radio receiver having an adaptive equalizer and method therefor
US6879216B2 (en) * 2002-10-18 2005-04-12 Agilent Technologies, Inc. Integrated circuit that provides access to an output node of a filter having an adjustable bandwidth
JP4282524B2 (ja) * 2004-03-30 2009-06-24 三洋電機株式会社 Ａｍ受信回路
JP2007028290A (ja) * 2005-07-19 2007-02-01 Sanyo Electric Co Ltd Ａｍラジオ受信回路
JP4610512B2 (ja) * 2006-04-05 2011-01-12 三洋電機株式会社 音声信号処理回路
US8265585B2 (en) 2006-08-31 2012-09-11 Clarion Co., Ltd. IBOC broadcasting receiver
US8787507B2 (en) * 2011-07-25 2014-07-22 Spreadtrum Communications USA Detection and mitigation of interference in a receiver

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356567A (en) * 1977-06-28 1982-10-26 Pioneer Electronic Corporation Radio receiver with bandwidth switching
JPS5843301Y2 (ja) * 1977-07-02 1983-09-30 ヤマハ株式会社 受信機における受信状態自動選択回路
CA1190289A (en) * 1981-04-28 1985-07-09 Nippon Hoso Kyokai Fm signal demodulation system
JPS59185433A (ja) * 1983-04-06 1984-10-22 Trio Kenwood Corp Ａｍ受信機
US4672657A (en) * 1985-12-17 1987-06-09 Motorola, Inc. Multichannel telephone system
JPH0232248U (US06633600-20031014-M00021.png) * 1988-08-24 1990-02-28

Also Published As

Publication number Publication date
GB2222332A (en) 1990-02-28
HK101793A (en) 1993-10-08
US5095534A (en) 1992-03-10
CA1312922C (en) 1993-01-19
GB2222332B (en) 1993-03-03
JPH02186723A (ja) 1990-07-23
GB8919359D0 (en) 1989-10-11

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees