MX9307742A - Metodo para transferir informacion con un dispositivo de comunicaciones. - Google Patents

Metodo para transferir informacion con un dispositivo de comunicaciones.

Info

Publication number
MX9307742A
MX9307742A MX9307742A MX9307742A MX9307742A MX 9307742 A MX9307742 A MX 9307742A MX 9307742 A MX9307742 A MX 9307742A MX 9307742 A MX9307742 A MX 9307742A MX 9307742 A MX9307742 A MX 9307742A
Authority
MX
Mexico
Prior art keywords
amplitude
decreasing
modem
communication device
transmitted
Prior art date
Application number
MX9307742A
Other languages
English (en)
Inventor
Robert Earl Scott
Original Assignee
American Telephone & Telegraph
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 American Telephone & Telegraph filed Critical American Telephone & Telegraph
Publication of MX9307742A publication Critical patent/MX9307742A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Telephonic Communication Services (AREA)
  • Communication Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

La presente invención se refiere al incremento en la velocidad de recepción de datos de un modem al disminuir la amplitud de las señales transmitidas por el modem. Cuando se disminuye la amplitud de las señales transmitidas se reduce la amplitud de ecos resultantes y de esta manera se reducen los ecos residuales que permanecen después de la cancelación de ecos. El reducir los ecos residuales permite incrementar la velocidad de recepción de datos. El disminuir la amplitud de la señal transmitida también involucra disminuir la velocidad de transmisión de datos; sin embargo, velocidades de transferencia de datos asimétricas son aceptables para muchas ampliaciones de modem.
MX9307742A 1992-12-14 1993-12-08 Metodo para transferir informacion con un dispositivo de comunicaciones. MX9307742A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/990,159 US5394392A (en) 1992-12-14 1992-12-14 Method for transferring information using modems

Publications (1)

Publication Number Publication Date
MX9307742A true MX9307742A (es) 1994-06-30

Family

ID=25535844

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9307742A MX9307742A (es) 1992-12-14 1993-12-08 Metodo para transferir informacion con un dispositivo de comunicaciones.

Country Status (5)

Country Link
US (1) US5394392A (es)
EP (1) EP0605107A3 (es)
JP (1) JPH06232937A (es)
CA (1) CA2102465A1 (es)
MX (1) MX9307742A (es)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5579305A (en) * 1994-02-09 1996-11-26 U.S. Robotics, Inc. Asymmetric duplex modem utilizing narrow band echo cancellation
US20010055320A1 (en) * 1994-12-15 2001-12-27 Pierzga Wayne Francis Multiplex communication
US5828657A (en) * 1995-09-29 1998-10-27 Paradyne Corporation Half-duplex echo canceler training using a pilot signal
US5825753A (en) * 1995-09-29 1998-10-20 Paradyne Corporation Echo canceler gain tracker for cellular modems
US5812537A (en) * 1995-09-29 1998-09-22 Paradyne Corporation Echo canceling method and apparatus for data over cellular
US5751701A (en) * 1996-07-19 1998-05-12 Globespan Technologies, Inc. Rate adaptive digital subscriber line ("RADSL") modem
JP3200403B2 (ja) * 1996-10-14 2001-08-20 日本電信電話株式会社 データ送信方法、データ送受信方法およびデータ送信装置
US5987069A (en) * 1996-12-24 1999-11-16 Gte Government Systems Corporation Method and apparatus for variably allocating upstream and downstream communication spectra
KR20000057637A (ko) * 1996-12-24 2000-09-25 킹 가일 엠. 심볼 로크 검출기
US5953658A (en) * 1997-01-08 1999-09-14 Paradyne Corporation System and method for eliminating offset echo in a data connection over a cellular cordless telephone service
KR100195152B1 (ko) * 1997-03-31 1999-06-15 윤종용 비대칭 데이터 전송장치의 초기화방법
US6198749B1 (en) 1997-04-03 2001-03-06 Nortel Networks Limited System for inverse multiplexing analog channels
US6021120A (en) * 1997-04-30 2000-02-01 Siemens Information And Communication Networks, Inc. System and method for creating full duplex virtual circuits based on multiple asymmetrical links
US6075797A (en) * 1997-10-17 2000-06-13 3Com Corporation Method and system for detecting mobility of a wireless-capable modem to minimize data transfer rate renegotiations
US6304594B1 (en) 1998-07-27 2001-10-16 General Dynamics Government Systems Corporation Interference detection and avoidance technique
US6212229B1 (en) 1998-12-16 2001-04-03 General Dynamics Government Systems Corporation Adaptive pre-emphasis technique
AU7036100A (en) * 1999-09-13 2001-04-17 Fernway Limited A method for transmitting data between respective first and second modems in a telecommunications system, and telecommunications system
EP1338109B1 (en) * 2000-11-16 2006-05-10 Broadcom Corporation Method and apparatus for detection and classification of impairments on an rf modulated network
US7321618B2 (en) * 2002-04-09 2008-01-22 Texas Instruments Incorporated PCM upstream data transmission server
US7418240B2 (en) * 2002-05-03 2008-08-26 Broadcom Corporation Dynamic adaptation of impaired RF communication channels in a communication system
US20040213170A1 (en) * 2003-04-22 2004-10-28 Gordon Bremer Extended-performance echo-canceled duplex (EP ECD) communication

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166249B (de) * 1960-06-24 1964-03-26 Int Standard Electric Corp Duplex-Daten-UEbertragungsanordnung
US3906166A (en) * 1973-10-17 1975-09-16 Motorola Inc Radio telephone system
US4335464A (en) * 1980-01-24 1982-06-15 Paradyne Corporation Dual multipoint data transmission system modem
EP0253039B1 (fr) * 1986-07-15 1991-04-03 International Business Machines Corporation Méthode et dispositif de protection contre les échos dans un modem
US5289459A (en) * 1986-12-01 1994-02-22 British Telecommunications Plc Duplex data transmission
US4860341A (en) * 1987-06-02 1989-08-22 Motorola, Inc. Radiotelephone credit card call approval synchronization
JPH0195609A (ja) * 1987-10-08 1989-04-13 Oki Electric Ind Co Ltd 全二重モデム
US5008901A (en) * 1987-10-29 1991-04-16 U.S. Robotics, Inc. Asymmetrical duplex error-controlled modem
US4811357A (en) * 1988-01-04 1989-03-07 Paradyne Corporation Secondary channel for digital modems using spread spectrum subliminal induced modulation
US4972436A (en) * 1988-10-14 1990-11-20 Hayes Microcomputer Products, Inc. High performance sigma delta based analog modem front end
US4890316A (en) * 1988-10-28 1989-12-26 Walsh Dale M Modem for communicating at high speed over voice-grade telephone circuits
US5007047A (en) * 1988-12-02 1991-04-09 Codex Corporation Adaptive rate control for echo cancelling modem
US5099478A (en) * 1989-05-23 1992-03-24 A.T.& T. Paradyne Communication of secondary channel byte in a synchronous modem without statistical uncertainty

Also Published As

Publication number Publication date
JPH06232937A (ja) 1994-08-19
EP0605107A3 (en) 1995-09-27
CA2102465A1 (en) 1994-06-15
US5394392A (en) 1995-02-28
EP0605107A2 (en) 1994-07-06

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