HK91496A - Adaptive recognising device - Google Patents
Adaptive recognising deviceInfo
- 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
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)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Optical Communication System (AREA)
- Complex Calculations (AREA)
- Character Discrimination (AREA)
- Image Analysis (AREA)
- Radar Systems Or Details Thereof (AREA)
- Image Processing (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
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) | ATE63658T1 (xx) |
DE (2) | DE3582866D1 (xx) |
GB (1) | GB8427165D0 (xx) |
HK (2) | HK91496A (xx) |
Families Citing this family (12)
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 |
EP0313706B1 (en) * | 1987-10-30 | 1992-04-29 | International Business Machines Corporation | Analog-to-digital and digital-to-analog conversion system and echo cancellation device including the same |
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 |
US6272241B1 (en) | 1989-03-22 | 2001-08-07 | British Telecommunications Public Limited Company | Pattern recognition |
GB8906558D0 (en) * | 1989-03-22 | 1989-05-04 | British Telecomm | 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)
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 |
US4425483A (en) * | 1981-10-13 | 1984-01-10 | Northern Telecom Limited | 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 |
-
1984
- 1984-10-26 GB GB848427165A patent/GB8427165D0/en active Pending
-
1985
- 1985-10-24 US US06/790,931 patent/US4782459A/en not_active Ceased
- 1985-10-25 AT AT85307741T patent/ATE63658T1/de not_active IP Right Cessation
- 1985-10-25 DE DE8585307741T patent/DE3582866D1/de not_active Expired - Fee Related
- 1985-10-25 EP EP90105617A patent/EP0383360B1/en not_active Expired - Lifetime
- 1985-10-25 DE DE3587942T patent/DE3587942T2/de not_active Expired - Fee Related
- 1985-10-25 EP EP85307741A patent/EP0183389B1/en not_active Expired - Lifetime
- 1985-10-25 AT AT90105617T patent/ATE113774T1/de active
- 1985-10-26 JP JP60240339A patent/JPH0744423B2/ja not_active Expired - Lifetime
-
1990
- 1990-10-30 US US07/605,844 patent/USRE34205E/en not_active Expired - Lifetime
-
1993
- 1993-02-18 JP JP5054885A patent/JPH0795670B2/ja not_active Expired - Lifetime
-
1996
- 1996-05-23 HK HK91496A patent/HK91496A/xx not_active IP Right Cessation
- 1996-07-25 HK HK137796A patent/HK137796A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH0744423B2 (ja) | 1995-05-15 |
GB8427165D0 (en) | 1984-12-05 |
HK137796A (en) | 1996-08-02 |
DE3587942T2 (de) | 1995-03-30 |
US4782459A (en) | 1988-11-01 |
DE3587942D1 (de) | 1994-12-08 |
DE3582866D1 (de) | 1991-06-20 |
EP0183389B1 (en) | 1991-05-15 |
EP0183389A1 (en) | 1986-06-04 |
ATE63658T1 (de) | 1991-06-15 |
JPH0795670B2 (ja) | 1995-10-11 |
JPH06112771A (ja) | 1994-04-22 |
ATE113774T1 (de) | 1994-11-15 |
EP0383360B1 (en) | 1994-11-02 |
EP0383360A2 (en) | 1990-08-22 |
USRE34205E (en) | 1993-03-30 |
EP0383360A3 (en) | 1990-10-17 |
JPS61113313A (ja) | 1986-05-31 |
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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) |