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[미국특허] Multi-mode signal processing 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04L-027/34
  • H04L-027/36
  • H04L-027/38
출원번호 US-0967027 (1992-10-27)
발명자 / 주소
  • Dent Paul W.,SEX
  • Ekelund Bjorn Olof Peter,SEX
출원인 / 주소
  • Ericsson Inc.
대리인 / 주소
    Burns, Doane, Swecker & Mathis, L.L.P.
인용정보 피인용 횟수 : 89  인용 특허 : 34

초록 ▼

A digital system accommodates analog communications, thus avoiding the need for separate subsystems each dedicated to either analog or digital communications. The system includes a receive circuit for converting received signals into an intermediate frequency, a transmit circuit for modulating and t

대표청구항 ▼

[ What is claimed is:] [9.] A multi-mode cellular radio telephone capable of receiving digital speech signals or analog speech signals comprising:down conversion means to convert a received signal to a intermediate signal in a digital speech reception mode and an analog speech reception mode;vector

이 특허에 인용된 특허 (34) 인용/피인용 타임라인 분석

  1. Holmqvist Bo P. (Lund SEX), Accumulator phase digitizer.
    상세보기
  2. Gundry Kenneth J. (San Francisco CA), Analog and digital signal apparatus.
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  3. Hanawa Tetsuya (Yokohama JPX), Apparatus for selecting control channel in mobile communication system.
    상세보기
  4. Akerberg Dag E. (Jrflla SEX), Beacon carrier.
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  5. Gillig Steven F. (Roselle IL) Pederson Glen E. (St. Charles IL), Cellular cordless telephone.
    상세보기
  6. Harper Donald J. (Altamonte Springs FL), Cellular radiotelephone system providing diverse separately-accessible groups of channels.
    상세보기
  7. Pireh Ali (Hoffman Estates IL), Cellular telephone operable on different cellular telephone systems.
    상세보기
  8. Pireh Ali (Hoffman Estates IL), Cellular telephone responsive to service availability for operating on different cellular telephone systems.
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  9. Dahlin Jan E. A. S. (Jrflla TX SEX) Bohaychuk John R. (Richardson TX), Combined analog and digital cellular telephone system having a secondary set of control channels.
    상세보기
  10. Kuisma Erkki J. (Salo FIX), Combined analog/digital frequency modulator.
    상세보기
  11. Sooch Navdeep S. (Austin TX) Kerth Donald A. (Austin TX) Del Signore Bruce P. (Austin TX) Swanson Eric J. (Buda TX), Combining continuous time and discrete time signal processing in a delta-sigma modulator.
    상세보기
  12. Mueller Friedrich (Munich DEX), Device for disconnecting the receiver in case of a small signal-to-noise ratio for a digital-modulated radio system.
    상세보기
  13. Kaneaki Tetsuhiko (Ashiya JPX) Takayama Tsuyoshi (Osaka JPX), Digital signal requantizing circuit using multistage noise shaping.
    상세보기
  14. Dent Paul W. (Stehag SEX), Direct phase digitization.
    상세보기
  15. Rich Randall W. (Palatine IL) Osman Rashid M. (Carol Stream IL) Walczak Thomas J. (Woodstock IL) Cahill Stephen V. (Palatine IL), Dual mode automatic frequency control.
    상세보기
  16. Ishizuka Seijiro (Tokyo JPX) Kitakubo Kazuto (Tokyo JPX), Dual-mode transceiver that switches out a large insertion loss filter during transmission.
    상세보기
  17. Cahill Stephen V. (Palatine IL) Gillig Steven F. (Roselle IL) Walczak Thomas J. (Palatine IL), Hybrid modulation apparatus.
    상세보기
  18. Ooi Leng H. (Sunrise FL), Integrated distributed resistive-capacitive network.
    상세보기
  19. Dent Paul W. (Stehag SEX), Log-polar signal processing.
    상세보기
  20. Kaman Richard A. (Lake Zurich IL) Felix Kenneth A. (Crystal Lake IL) Smanski Philip J. (Palatine IL) Haug John R. (Mount Prospect IL), Method and apparatus for automatically attempting to seize a radio channel in a multichannel communication system.
    상세보기
  21. Durrant Randolph L. (Colorado Springs CO) Burbach Mark (Peyton CO), Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal.
    상세보기
  22. Eizenhfer Alfons (Altdorf IEX) Schmidt Werner (Roscommon IEX), Method of and control arrangement for selecting a control channel by a mobile radio station.
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  23. Andros Andrew A. (Spring TX) Campana Thomas J. (Chicago IL), Paging receiver with paging receiver identification code digits transmitted in order of increasing significance.
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  24. Kasai Yoshihiko (Tokyo JPX) Babano Sotoaki (Tokyo JPX), Portable radio telephone having power saver.
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  25. Osaka Masahiko (Tokyo JPX), Quadrature modulation circuit.
    상세보기
  26. Metroka Michael P. (Algonquin IL), Radio arrangement having two radios sharing circuitry.
    상세보기
  27. Nonami Takayuki (Hyogo JPX), Radio communication apparatus.
    상세보기
  28. Song Ching-Long (Columbus OH), Signal coding for telephone communication system.
    상세보기
  29. Ichihara Masaki (Tokyo JPX), Signal oscillator, FM modulation circuit using the same, and FM modulation method.
    상세보기
  30. Kaneda Hiroyuki (Tokyo JPX), Speech processing system including an amplitude level control circuit for digital processing.
    상세보기
  31. Critchlow David N. (San Diego CA) Avis Graham M. (San Diego CA) Earlam Sandra J. K. (San Diego CA) Johnson Karle J. (Carlsbad CA) Smetana Bruce A. (Escondido CA) Westling Gregory L. (Poway CA), Subscriber unit for wireless digital telephone system.
    상세보기
  32. Davarian Faramaz (Los Angeles CA), Universal FM receiver for mobile communications.
    상세보기
  33. Gaskill Garold B. (Portland OR) Park Daniel J. (Beaverton OR) Rullman Robert G. (Beaverton OR) Rose Donald T. (Portland OR) Stiley ; III Joseph F. (Tigard OR) Barnum Lewis W. (Tigard OR) Hoff Don G. , Watch pager system and communication protocol.
    상세보기
  34. McCabe David J. (Winchester GB2), Waveform encoder.
    상세보기

이 특허를 인용한 특허 (89) 인용/피인용 타임라인 분석

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