CA2191732A1 - Automatic modulation mode selecting unit and method for modems - Google Patents

Automatic modulation mode selecting unit and method for modems

Info

Publication number
CA2191732A1
CA2191732A1 CA2191732A CA2191732A CA2191732A1 CA 2191732 A1 CA2191732 A1 CA 2191732A1 CA 2191732 A CA2191732 A CA 2191732A CA 2191732 A CA2191732 A CA 2191732A CA 2191732 A1 CA2191732 A1 CA 2191732A1
Authority
CA
Canada
Prior art keywords
modulation mode
mode
selecting unit
transmission time
data file
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.)
Granted
Application number
CA2191732A
Other languages
French (fr)
Other versions
CA2191732C (en
Inventor
Manickam R. Sridhar
Neil Sheer
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
Manickam R. Sridhar
Neil Sheer
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 Manickam R. Sridhar, Neil Sheer, Motorola, Inc. filed Critical Manickam R. Sridhar
Publication of CA2191732A1 publication Critical patent/CA2191732A1/en
Application granted granted Critical
Publication of CA2191732C publication Critical patent/CA2191732C/en
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
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation

Abstract

An automatic modulation mode selecting unit (208) and a method (100) provide for selection from a plurality of modulation modes having an optimized transmission time for a data file. This is particularly useful where a small data file is to be transmitted, such as for a hand-held message pad. The present invention may select a modulation mode having a slow data rate but a short training time to achieve a shorter transmission time a small data file in comparison with using another modulation mode having a fast data rate but a longer training time, and thus a longer transmission time. The automatic modulation mode selecting unit includes a mode select controller (202), a mode computer (204), and a mode select switch (206) for selecting a modulation mode based on a calculated optimized transmission time.
CA002191732A 1995-04-13 1996-02-20 Automatic modulation mode selecting unit and method for modems Expired - Fee Related CA2191732C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/421,723 US5550881A (en) 1995-04-13 1995-04-13 Automatic modulation mode selecting unit and method for modems
US08/421,723 1995-04-13
PCT/US1996/002196 WO1996032795A1 (en) 1995-04-13 1996-02-20 Automatic modulation mode selecting unit and method for modems

Publications (2)

Publication Number Publication Date
CA2191732A1 true CA2191732A1 (en) 1996-10-17
CA2191732C CA2191732C (en) 2000-12-12

Family

ID=23671773

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002191732A Expired - Fee Related CA2191732C (en) 1995-04-13 1996-02-20 Automatic modulation mode selecting unit and method for modems

Country Status (6)

Country Link
US (1) US5550881A (en)
EP (1) EP0765559A4 (en)
CN (1) CN1150877A (en)
AU (1) AU679654B2 (en)
CA (1) CA2191732C (en)
WO (1) WO1996032795A1 (en)

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US6463132B1 (en) * 1994-04-27 2002-10-08 Canon Kabushiki Kaisha Communication system having the capability of selecting an optimum communication mode from a plurality of modes, depending on the type of equipment at a party to be communicated with
US5710761A (en) * 1995-05-31 1998-01-20 Paradyne Corporation Error control negotiation based on modulation
JPH08340323A (en) * 1995-06-13 1996-12-24 Canon Inc Data communication equipment
US5991278A (en) 1996-08-13 1999-11-23 Telogy Networks, Inc. Asymmetric modem communications system and method
US6496543B1 (en) * 1996-10-29 2002-12-17 Qualcomm Incorporated Method and apparatus for providing high speed data communications in a cellular environment
DE19651593B4 (en) * 1996-12-11 2008-11-20 Rohde & Schwarz Gmbh & Co. Kg Arrangement for optimizing the data transmission via a bidirectional radio channel
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
JP3610185B2 (en) * 1997-05-08 2005-01-12 キヤノン株式会社 Communication apparatus and communication method
US9432172B2 (en) 1997-12-05 2016-08-30 Rembrandt Wireless Technologies, Lp System and method of communication using at least two modulation methods
US7248626B2 (en) 1997-12-05 2007-07-24 Paradyne Corporation System and method of communication via embedded modulation
US6192070B1 (en) * 1998-01-02 2001-02-20 Mitsubishi Electric Research Laboratories, Inc. Universal modem for digital video, audio and data communications
US6263016B1 (en) 1998-02-04 2001-07-17 3Com Corporation Methods for interfacing a subscriber link to digital networks
US6639911B1 (en) * 1998-03-31 2003-10-28 Texas Instruments Incorporated Data communications system with splitterless operation
US6236676B1 (en) 1998-04-17 2001-05-22 Siemens Information And Communication Networks, Inc. Intelligent adaptive modulation system
US7593481B2 (en) * 1998-08-31 2009-09-22 Kamilo Feher CDMA, W-CDMA, 3rd generation interoperable modem format selectable (MFS) systems with GMSK modulated systems
US6470055B1 (en) 1998-08-10 2002-10-22 Kamilo Feher Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems
US8050345B1 (en) * 1999-08-09 2011-11-01 Kamilo Feher QAM and GMSK systems
US7079584B2 (en) 1998-08-10 2006-07-18 Kamilo Feher OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation
US7415066B2 (en) * 1998-08-10 2008-08-19 Kamilo Feher Mis-matched modulation-demodulation format selectable filters
US7548787B2 (en) * 2005-08-03 2009-06-16 Kamilo Feher Medical diagnostic and communication system
GB2343342A (en) * 1998-10-28 2000-05-03 Int Mobile Satellite Org Satellite communication system with variable data transmission rate
US6567475B1 (en) * 1998-12-29 2003-05-20 Ericsson Inc. Method and system for the transmission, reception and processing of 4-level and 8-level signaling symbols
US9813270B2 (en) 1999-08-09 2017-11-07 Kamilo Feher Heart rate sensor and medical diagnostics wireless devices
US9373251B2 (en) 1999-08-09 2016-06-21 Kamilo Feher Base station devices and automobile wireless communication systems
US7260369B2 (en) 2005-08-03 2007-08-21 Kamilo Feher Location finder, tracker, communication and remote control system
US9307407B1 (en) 1999-08-09 2016-04-05 Kamilo Feher DNA and fingerprint authentication of mobile devices
US7388918B2 (en) * 2000-03-13 2008-06-17 Texas Instruments Incorporated Apparatus and method for the transparent upgrading of technology and applications in digital radio systems using programmable transmitters and receivers
JP3591726B2 (en) * 2001-12-07 2004-11-24 ソニー株式会社 Data communication control system, transmitter and transmission method
JP3973506B2 (en) * 2002-07-19 2007-09-12 三洋電機株式会社 Wireless receiving apparatus, wireless receiving method, and wireless receiving program
KR100559545B1 (en) * 2003-04-08 2006-03-10 엘지전자 주식회사 Device and the Method for developing the call quality for data communication of mobile phone
US7443818B2 (en) * 2003-12-15 2008-10-28 Intel Corporation Method, apparatus and system of multiple-input-multiple-output wireless communication
US20050220227A1 (en) * 2004-03-31 2005-10-06 Eyal Krupka Method and apparatus to detect modulation scheme
US7359449B2 (en) 2004-10-05 2008-04-15 Kamilo Feher Data communication for wired and wireless communication
US7280810B2 (en) 2005-08-03 2007-10-09 Kamilo Feher Multimode communication system
US10009956B1 (en) 2017-09-02 2018-06-26 Kamilo Feher OFDM, 3G and 4G cellular multimode systems and wireless mobile networks
CN103813002A (en) * 2012-11-14 2014-05-21 广州三星通信技术研究有限公司 Device and method for sending pictures in terminals
CN104079515A (en) 2013-03-29 2014-10-01 华为技术有限公司 Adjustment method of modulation mode and modems
US10490245B2 (en) 2017-10-02 2019-11-26 Micron Technology, Inc. Memory system that supports dual-mode modulation
US10355893B2 (en) 2017-10-02 2019-07-16 Micron Technology, Inc. Multiplexing distinct signals on a single pin of a memory device
US10446198B2 (en) 2017-10-02 2019-10-15 Micron Technology, Inc. Multiple concurrent modulation schemes in a memory system
US10725913B2 (en) 2017-10-02 2020-07-28 Micron Technology, Inc. Variable modulation scheme for memory device access or operation
US11403241B2 (en) 2017-10-02 2022-08-02 Micron Technology, Inc. Communicating data with stacked memory dies

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US4425665A (en) * 1981-09-24 1984-01-10 Advanced Micro Devices, Inc. FSK Voiceband modem using digital filters
US4931250A (en) * 1988-05-12 1990-06-05 Codex Corporation Multimode modem
US4890316A (en) * 1988-10-28 1989-12-26 Walsh Dale M Modem for communicating at high speed over voice-grade telephone circuits
US5317594A (en) * 1992-01-13 1994-05-31 General Datacomm, Inc. Systems for and method of identifying V.fast modem within existing automatic interworking procedure standards
US5349635A (en) * 1992-11-19 1994-09-20 At&T Bell Laboratories Half-duplex or full-duplex automode operation for use in data communications equipment
US5384780A (en) * 1993-05-14 1995-01-24 Codex Corporation High speed modem, method and system for achieving synchronous data compression
US5533004A (en) * 1994-11-07 1996-07-02 Motorola, Inc. Method for providing and selecting amongst multiple data rates in a time division multiplexed system

Also Published As

Publication number Publication date
CA2191732C (en) 2000-12-12
CN1150877A (en) 1997-05-28
EP0765559A1 (en) 1997-04-02
WO1996032795A1 (en) 1996-10-17
AU4987496A (en) 1996-10-30
US5550881A (en) 1996-08-27
AU679654B2 (en) 1997-07-03
EP0765559A4 (en) 2000-02-23

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Legal Events

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