IT8223422A0 - Di frequenza che utilizza filtri modulatore-demodulatore di banda digitali. fonica con selezione e deviazione - Google Patents

Di frequenza che utilizza filtri modulatore-demodulatore di banda digitali. fonica con selezione e deviazione

Info

Publication number
IT8223422A0
IT8223422A0 IT8223422A IT2342282A IT8223422A0 IT 8223422 A0 IT8223422 A0 IT 8223422A0 IT 8223422 A IT8223422 A IT 8223422A IT 2342282 A IT2342282 A IT 2342282A IT 8223422 A0 IT8223422 A0 IT 8223422A0
Authority
IT
Italy
Prior art keywords
audio
deviation
selection
frequency
uses digital
Prior art date
Application number
IT8223422A
Other languages
English (en)
Other versions
IT1198405B (it
Inventor
Michael K Stauffer
Original Assignee
Advanced Micro Devices 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 Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Publication of IT8223422A0 publication Critical patent/IT8223422A0/it
Application granted granted Critical
Publication of IT1198405B publication Critical patent/IT1198405B/it

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
IT23422/82A 1981-09-24 1982-09-24 Modulatore-demodulatore di banda fonica con selezione e deviazione di frequenza che utilizza filtri digitali IT1198405B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/305,014 US4425665A (en) 1981-09-24 1981-09-24 FSK Voiceband modem using digital filters

Publications (2)

Publication Number Publication Date
IT8223422A0 true IT8223422A0 (it) 1982-09-24
IT1198405B IT1198405B (it) 1988-12-21

Family

ID=23178934

Family Applications (1)

Application Number Title Priority Date Filing Date
IT23422/82A IT1198405B (it) 1981-09-24 1982-09-24 Modulatore-demodulatore di banda fonica con selezione e deviazione di frequenza che utilizza filtri digitali

Country Status (5)

Country Link
US (1) US4425665A (it)
EP (1) EP0089343B1 (it)
DE (1) DE3278664D1 (it)
IT (1) IT1198405B (it)
WO (1) WO1983001166A1 (it)

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WO1987006071A1 (en) * 1986-03-31 1987-10-08 Consultant's Choice Inc. System and method for transporting data
US4689801A (en) * 1983-10-11 1987-08-25 American Standard Inc. Microprocessor FSK data communications module
US4639933A (en) * 1983-12-14 1987-01-27 General Electric Company Steering logic circuit for a digital data transceiver
US4912723A (en) * 1984-06-28 1990-03-27 Westinghouse Electric Corp. Multipurpose digital IC for communication and control network
US4697281A (en) 1986-03-14 1987-09-29 Spectrum Cellular Communications Corporation, Inc. Cellular telephone data communication system and method
USRE37141E1 (en) 1984-09-10 2001-04-17 Spectrum Information Technologies, Inc. Cellular telephone data communication system and method
US4644561A (en) * 1985-03-20 1987-02-17 International Mobile Machines Corp. Modem for RF subscriber telephone system
CA1307323C (en) * 1986-08-22 1992-09-08 Transcom Communications Systems Ltd Modem and data communication system
US5259000A (en) * 1987-08-26 1993-11-02 Hitachi, Ltd. Modulator-demodulator apparatus and system
GB2209648B (en) * 1987-09-10 1991-10-23 Ncr Co Modem communication system having main and secondary channels
US5115451A (en) * 1988-10-14 1992-05-19 Concord Communications, Inc. Local area network modem
US4972457A (en) 1989-01-19 1990-11-20 Spectrum Information Technologies, Inc. Portable hybrid communication system and methods
USRE38645E1 (en) 1989-01-19 2004-11-02 Mlr, Llc Portable hybrid communication system and methods
JP2583610B2 (ja) * 1989-07-07 1997-02-19 三菱電機株式会社 Ａ／ｄ、ｄ／ａ変換装置
US5127041A (en) * 1990-06-01 1992-06-30 Spectrum Information Technologies, Inc. System and method for interfacing computers to diverse telephone networks
US5249218A (en) * 1992-04-06 1993-09-28 Spectrum Information Technologies, Inc. Programmable universal interface system
CH684860A5 (de) * 1992-04-23 1995-01-13 Haeni Prolectron Ag Verfahren und Schaltungsanordnung zur Uebertragung von binären Datenfolgen.
US5726893A (en) * 1992-12-17 1998-03-10 Stanford Telecommunications, Inc. Cellular telephone with voice-in-data modem
JPH08505510A (ja) * 1993-10-28 1996-06-11 モトローラ・インコーポレーテッド 複数のデータプロトコルに適用可能な復調器論理ユニット
US5729576A (en) * 1994-12-16 1998-03-17 Hughes Electronics Interference canceling receiver
US5550881A (en) * 1995-04-13 1996-08-27 Motorola, Inc. Automatic modulation mode selecting unit and method for modems
US7929498B2 (en) * 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US7123600B2 (en) * 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US6885652B1 (en) * 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US7020111B2 (en) * 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US6940840B2 (en) 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US6487190B1 (en) * 1996-06-27 2002-11-26 Interdigital Technology Corporation Efficient multichannel filtering for CDMA modems
US6788662B2 (en) 1995-06-30 2004-09-07 Interdigital Technology Corporation Method for adaptive reverse power control for spread-spectrum communications
US7072380B2 (en) * 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
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US8908872B2 (en) * 1996-06-07 2014-12-09 That Corporation BTSC encoder
US5796842A (en) * 1996-06-07 1998-08-18 That Corporation BTSC encoder
US6950388B2 (en) * 1996-08-22 2005-09-27 Tellabs Operations, Inc. Apparatus and method for symbol alignment in a multi-point OFDM/DMT digital communications system
US6118758A (en) 1996-08-22 2000-09-12 Tellabs Operations, Inc. Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture
US5790514A (en) * 1996-08-22 1998-08-04 Tellabs Operations, Inc. Multi-point OFDM/DMT digital communications system including remote service unit with improved receiver architecture
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US5940438A (en) 1997-02-18 1999-08-17 Mitsubishi Electric Information Technology Center America, Inc (Ita) Universal modem for digital video, audio and data communications
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US6091806A (en) * 1997-10-16 2000-07-18 International Business Machines Corporation Data processing system having a programmable modem and method therefor
US20020051434A1 (en) * 1997-10-23 2002-05-02 Ozluturk Fatih M. Method for using rapid acquisition spreading codes for spread-spectrum communications
US7440498B2 (en) 2002-12-17 2008-10-21 Tellabs Operations, Inc. Time domain equalization for discrete multi-tone systems
US6631175B2 (en) * 1998-04-03 2003-10-07 Tellabs Operations, Inc. Spectrally constrained impulse shortening filter for a discrete multi-tone receiver
ES2389626T3 (es) 1998-04-03 2012-10-29 Tellabs Operations, Inc. Filtro para acortamiento de respuesta al impulso, con restricciones espectrales adicionales, para transmisión de múltiples portadoras
US6490328B1 (en) * 1999-05-11 2002-12-03 Intel Corporation High speed data transceiver in harsh wiring networks
US6529868B1 (en) * 2000-03-28 2003-03-04 Tellabs Operations, Inc. Communication system noise cancellation power signal calculation techniques
DE10060425A1 (de) * 2000-12-05 2002-06-13 Infineon Technologies Ag Empfängerschaltung
US7590695B2 (en) 2003-05-09 2009-09-15 Aol Llc Managing electronic messages
US7739602B2 (en) 2003-06-24 2010-06-15 Aol Inc. System and method for community centric resource sharing based on a publishing subscription model
US7222158B2 (en) * 2003-12-31 2007-05-22 Aol Llc Third party provided transactional white-listing for filtering electronic communications
US7129753B2 (en) * 2004-05-26 2006-10-31 Infineon Technologies Ag Chip to chip interface
US20060149971A1 (en) * 2004-12-30 2006-07-06 Douglas Kozlay Apparatus, method, and system to determine identity and location of a user with an acoustic signal generator coupled into a user-authenticating fingerprint sensor
US7903772B2 (en) * 2005-02-04 2011-03-08 Broadcom Corporation Digital demodulator with improved hardware and power efficiency
US7583726B2 (en) * 2005-09-20 2009-09-01 Tyco Safety Products Canada Ltd. Frequency shift keying (FSK) data communications using voice modem
TWI466015B (zh) * 2013-11-13 2014-12-21 Acer Inc 聲音資料傳輸系統與聲音資料傳輸方法

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Publication number Priority date Publication date Assignee Title
US4336613A (en) * 1977-06-30 1982-06-22 Texas Instruments Incorporated Charge coupled device filters and modems incorporating such filters

Also Published As

Publication number Publication date
DE3278664D1 (de) 1988-07-14
WO1983001166A1 (en) 1983-03-31
EP0089343A1 (en) 1983-09-28
EP0089343B1 (en) 1988-06-08
US4425665A (en) 1984-01-10
IT1198405B (it) 1988-12-21
EP0089343A4 (en) 1984-07-18

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960626