HK91496A - Adaptive recognising device - Google Patents

Adaptive recognising device

Info

Publication number
HK91496A
HK91496A HK91496A HK91496A HK91496A HK 91496 A HK91496 A HK 91496A HK 91496 A HK91496 A HK 91496A HK 91496 A HK91496 A HK 91496A HK 91496 A HK91496 A HK 91496A
Authority
HK
Hong Kong
Prior art keywords
value
input signal
store
input
addressable
Prior art date
Application number
HK91496A
Other languages
English (en)
Inventor
Robert Denis Johnston
Original Assignee
British Telecomm
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 British Telecomm filed Critical British Telecomm
Publication of HK91496A publication Critical patent/HK91496A/xx

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
    • H04B3/231—Echo cancellers using readout of a memory to provide the echo replica

Landscapes

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Optical Communication System (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Complex Calculations (AREA)
  • Character Discrimination (AREA)
  • Image Analysis (AREA)
  • Image Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
HK91496A 1984-10-26 1996-05-23 Adaptive recognising device HK91496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848427165A GB8427165D0 (en) 1984-10-26 1984-10-26 Adaptive recognising device

Publications (1)

Publication Number Publication Date
HK91496A true HK91496A (en) 1996-05-31

Family

ID=10568818

Family Applications (2)

Application Number Title Priority Date Filing Date
HK91496A HK91496A (en) 1984-10-26 1996-05-23 Adaptive recognising device
HK137796A HK137796A (en) 1984-10-26 1996-07-25 Adaptive recognising device

Family Applications After (1)

Application Number Title Priority Date Filing Date
HK137796A HK137796A (en) 1984-10-26 1996-07-25 Adaptive recognising device

Country Status (7)

Country Link
US (2) US4782459A (xx)
EP (2) EP0383360B1 (xx)
JP (2) JPH0744423B2 (xx)
AT (2) ATE113774T1 (xx)
DE (2) DE3582866D1 (xx)
GB (1) GB8427165D0 (xx)
HK (2) HK91496A (xx)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8427165D0 (en) 1984-10-26 1984-12-05 British Telecomm Adaptive recognising device
US5414865A (en) * 1985-09-17 1995-05-09 Beran; James T. Self-programming with limited sequential memory capacity
GB8716194D0 (en) * 1987-07-09 1987-08-12 British Telecomm Speech recognition
DE3778702D1 (de) * 1987-10-30 1992-06-04 Ibm Analog-digital/digital-analogwandlersystem und geraet zur echoannullierung unter verwendung eines solchen systems.
JPH01245607A (ja) * 1988-03-25 1989-09-29 Ricoh Co Ltd 合成型良限インパルス応答デジタルフィルタ
US5758148A (en) * 1989-03-10 1998-05-26 Board Of Regents, The University Of Texas System System and method for searching a data base using a content-searchable memory
GB8906558D0 (en) * 1989-03-22 1989-05-04 British Telecomm Pattern recognition
US6272241B1 (en) 1989-03-22 2001-08-07 British Telecommunications Public Limited Company Pattern recognition
GB9107416D0 (en) * 1991-04-09 1991-05-22 Active Noise & Vibration Tech Active noise reduction
JP3093869B2 (ja) * 1992-04-28 2000-10-03 オリンパス光学工業株式会社 画像取り込み装置
US6628780B2 (en) * 1997-10-31 2003-09-30 Lucent Technologies Inc. Echo cancellation in the network for data applications
US8077642B2 (en) * 2007-12-28 2011-12-13 Intel Corporation Methods and apparatus for signal echo cancellation and transmitter calibration in full duplex systems

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118410A5 (xx) * 1970-12-17 1972-07-28 Ibm France
NO140648C (no) * 1977-10-24 1983-03-29 Elektrisk Bureau As Direktiv kobler.
US4535206A (en) * 1980-04-09 1985-08-13 At&T Bell Laboratories Echo cancellation in two-wire full-duplex data transmission with estimation of far-end data components
US4435823A (en) * 1980-12-29 1984-03-06 Harris Corporation Adaptive equalizer capable of linear and nonlinear weighting
US4405840A (en) * 1981-03-05 1983-09-20 Bell Telephone Laboratories, Incorporated Echo canceler far end energy discriminator
GB2095067B (en) * 1981-03-12 1984-10-03 Standard Telephones Cables Ltd Digital filter arrangement
CA1173128A (en) * 1981-10-13 1984-08-21 Pok F. Lee Echo cancellation using transversal filters
FR2517905B1 (fr) * 1981-12-09 1985-11-29 Telecommunications Sa Dispositif d'initialisation pour annuleur d'echo et son application aux echos lointains
JPS58223928A (ja) * 1982-06-23 1983-12-26 Nec Corp エコ−キヤンセラ−装置
GB2123259A (en) * 1982-06-25 1984-01-25 Philips Electronic Associated Digital duplex communication system
US4669116A (en) * 1982-12-09 1987-05-26 Regents Of The University Of California Non-linear echo cancellation of data signals
GB8400791D0 (en) * 1984-01-12 1984-02-15 British Telecomm Digital filter
GB8427165D0 (en) 1984-10-26 1984-12-05 British Telecomm Adaptive recognising device

Also Published As

Publication number Publication date
ATE63658T1 (de) 1991-06-15
JPS61113313A (ja) 1986-05-31
EP0183389A1 (en) 1986-06-04
GB8427165D0 (en) 1984-12-05
EP0383360A3 (en) 1990-10-17
DE3587942D1 (de) 1994-12-08
EP0383360B1 (en) 1994-11-02
DE3587942T2 (de) 1995-03-30
EP0183389B1 (en) 1991-05-15
ATE113774T1 (de) 1994-11-15
DE3582866D1 (de) 1991-06-20
HK137796A (en) 1996-08-02
JPH0795670B2 (ja) 1995-10-11
US4782459A (en) 1988-11-01
USRE34205E (en) 1993-03-30
EP0383360A2 (en) 1990-08-22
JPH06112771A (ja) 1994-04-22
JPH0744423B2 (ja) 1995-05-15

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)