KR830002467B1 - 이퀄라이저 - Google Patents
이퀄라이저 Download PDFInfo
- Publication number
- KR830002467B1 KR830002467B1 KR1019800003635A KR800003635A KR830002467B1 KR 830002467 B1 KR830002467 B1 KR 830002467B1 KR 1019800003635 A KR1019800003635 A KR 1019800003635A KR 800003635 A KR800003635 A KR 800003635A KR 830002467 B1 KR830002467 B1 KR 830002467B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- multiplier
- correlator
- output
- added
- 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.)
- Expired
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H15/00—Transversal filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of DC offset
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Amplifiers (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Dc Digital Transmission (AREA)
- Networks Using Active Elements (AREA)
- Inorganic Insulating Materials (AREA)
- Circuits Of Receivers In General (AREA)
- Optical Communication System (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Stereophonic System (AREA)
Abstract
Description
Claims (1)
- 제1단이 입력신호를 수신하며 후속단은 입력신호의 시간간격을 둔 샘플을 수신하는 다수의 탭단으로 구성되고, 각 단은 각각 입력신호가 공급되는 승산기와 상관기로 구성되며, 승산기로부터의 출력신호는 판정회로에 신호를 공급하여 출력신호가 오차신호를 발하는 누산기에 의하여 가산되고, 오차신호가 잔류오차를 보정하도록 각 상관기에 공급되는 어댑티브 이퀄라이저에 있어서, 고정전압원에 연결된 자체의 승산기와 상관기를 가지며, 승산기로부터의 출력신호가 상기 누산기에 의하여 다른 승산기의 출력신호들에 가산되고 상기 판정회로에 의하여 발생된 오차신호가 승산기의 이득을 제어하도록 부가적인 상관기에 의해 상기 고정전압고 상관되어 입력신호의 초기직류잔류편차를 보상하는 부가적인 탭단으로 구성됨을 특징으로 하는 이퀄라이저.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB79/32403 | 1979-09-19 | ||
| GB7932403 | 1979-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR830003980A KR830003980A (ko) | 1983-06-30 |
| KR830002467B1 true KR830002467B1 (ko) | 1983-10-26 |
Family
ID=10507922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019800003635A Expired KR830002467B1 (ko) | 1979-09-19 | 1980-09-16 | 이퀄라이저 |
Country Status (16)
| Country | Link |
|---|---|
| US (1) | US4347615A (ko) |
| EP (1) | EP0026065B1 (ko) |
| JP (1) | JPS5654116A (ko) |
| KR (1) | KR830002467B1 (ko) |
| AT (1) | ATE5556T1 (ko) |
| AU (1) | AU532416B2 (ko) |
| CA (1) | CA1148224A (ko) |
| DE (1) | DE3065833D1 (ko) |
| DK (1) | DK149360C (ko) |
| ES (1) | ES8105909A1 (ko) |
| HK (1) | HK77384A (ko) |
| IE (1) | IE50794B1 (ko) |
| NO (1) | NO148168C (ko) |
| PT (1) | PT71796B (ko) |
| SG (1) | SG43884G (ko) |
| ZA (1) | ZA805543B (ko) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2159376B (en) * | 1984-05-22 | 1987-08-26 | Emi Ltd | An echo cancelling system |
| GB8423017D0 (en) * | 1984-09-12 | 1984-10-17 | Plessey Co Plc | Echo canceller |
| AR241298A1 (es) * | 1985-10-03 | 1992-04-30 | Siemens Ag | Ecualizador transversal adaptivo . |
| US4726036A (en) * | 1987-03-26 | 1988-02-16 | Unisys Corporation | Digital adaptive filter for a high throughput digital adaptive processor |
| JPH01295529A (ja) * | 1988-05-23 | 1989-11-29 | Nec Corp | 切り替え式クロックを有する集積回路 |
| US4964118A (en) * | 1988-10-24 | 1990-10-16 | Northern Telecom Limited | Apparatus and method for echo cancellation |
| JPH0453309A (ja) * | 1990-06-21 | 1992-02-20 | Nec Home Electron Ltd | クロック切換回路 |
| US5493343A (en) * | 1994-12-28 | 1996-02-20 | Thomson Consumer Electronics, Inc. | Compensation for truncation error in a digital video signal decoder |
| US7076514B2 (en) * | 2001-12-18 | 2006-07-11 | Conexant, Inc. | Method and system for computing pre-equalizer coefficients |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH505510A (de) * | 1969-08-29 | 1971-03-31 | Patelhold Patentverwertung | Verfahren zur Mitübertragung der tiefen Signalfrequenzkomponenten eines Nachrichtensignals |
| US3597541A (en) * | 1969-12-23 | 1971-08-03 | Sylvania Electric Prod | Decision-directed adapted equalizer circuit |
| GB1508995A (en) * | 1974-05-17 | 1978-04-26 | Post Office | Digital data transmission systems |
| US3949206A (en) * | 1974-12-17 | 1976-04-06 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Filtering device |
| JPS5182548A (en) * | 1974-12-27 | 1976-07-20 | Fujitsu Ltd | Jidotokaki |
| US3992616A (en) * | 1975-06-24 | 1976-11-16 | Honeywell Inc. | Receiver equalizer apparatus |
-
1980
- 1980-09-04 AU AU62039/80A patent/AU532416B2/en not_active Ceased
- 1980-09-05 DE DE8080303118T patent/DE3065833D1/de not_active Expired
- 1980-09-05 AT AT80303118T patent/ATE5556T1/de not_active IP Right Cessation
- 1980-09-05 EP EP80303118A patent/EP0026065B1/en not_active Expired
- 1980-09-08 ZA ZA00805543A patent/ZA805543B/xx unknown
- 1980-09-10 NO NO802685A patent/NO148168C/no unknown
- 1980-09-11 PT PT71796A patent/PT71796B/pt unknown
- 1980-09-12 CA CA000360192A patent/CA1148224A/en not_active Expired
- 1980-09-16 KR KR1019800003635A patent/KR830002467B1/ko not_active Expired
- 1980-09-16 US US06/187,827 patent/US4347615A/en not_active Expired - Lifetime
- 1980-09-18 ES ES495155A patent/ES8105909A1/es not_active Expired
- 1980-09-18 IE IE1956/80A patent/IE50794B1/en unknown
- 1980-09-19 JP JP13055280A patent/JPS5654116A/ja active Granted
- 1980-09-19 DK DK398580A patent/DK149360C/da not_active IP Right Cessation
-
1984
- 1984-06-18 SG SG43884A patent/SG43884G/en unknown
- 1984-10-11 HK HK773/84A patent/HK77384A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DK149360B (da) | 1986-05-12 |
| ES495155A0 (es) | 1981-06-16 |
| ES8105909A1 (es) | 1981-06-16 |
| ZA805543B (en) | 1981-09-30 |
| ATE5556T1 (de) | 1983-12-15 |
| DE3065833D1 (en) | 1984-01-12 |
| PT71796A (en) | 1980-10-01 |
| NO148168C (no) | 1983-08-17 |
| SG43884G (en) | 1985-09-13 |
| KR830003980A (ko) | 1983-06-30 |
| EP0026065A1 (en) | 1981-04-01 |
| EP0026065B1 (en) | 1983-12-07 |
| NO148168B (no) | 1983-05-09 |
| JPS5654116A (en) | 1981-05-14 |
| JPS6335127B2 (ko) | 1988-07-13 |
| AU6203980A (en) | 1981-03-26 |
| DK149360C (da) | 1987-01-19 |
| AU532416B2 (en) | 1983-09-29 |
| US4347615A (en) | 1982-08-31 |
| IE801956L (en) | 1981-03-19 |
| HK77384A (en) | 1984-10-19 |
| DK398580A (da) | 1981-03-20 |
| NO802685L (no) | 1981-03-20 |
| IE50794B1 (en) | 1986-07-23 |
| PT71796B (en) | 1981-07-02 |
| CA1148224A (en) | 1983-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0109 | Patent application |
St.27 status event code: A-0-1-A10-A12-nap-PA0109 |
|
| PE0902 | Notice of grounds for rejection |
St.27 status event code: A-1-2-D10-D21-exm-PE0902 |
|
| PG1501 | Laying open of application |
St.27 status event code: A-1-1-Q10-Q12-nap-PG1501 |
|
| T11-X000 | Administrative time limit extension requested |
St.27 status event code: U-3-3-T10-T11-oth-X000 |
|
| P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
| P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
| P11-X000 | Amendment of application requested |
St.27 status event code: A-2-2-P10-P11-nap-X000 |
|
| P13-X000 | Application amended |
St.27 status event code: A-2-2-P10-P13-nap-X000 |
|
| PG1605 | Publication of application before grant of patent |
St.27 status event code: A-2-2-Q10-Q13-nap-PG1605 |
|
| PE0701 | Decision of registration |
St.27 status event code: A-1-2-D10-D22-exm-PE0701 |
|
| PR0701 | Registration of establishment |
St.27 status event code: A-2-4-F10-F11-exm-PR0701 |
|
| PR1002 | Payment of registration fee |
St.27 status event code: A-2-2-U10-U11-oth-PR1002 Fee payment year number: 1 |
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| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 4 |
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| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 Fee payment year number: 6 Fee payment year number: 5 |
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| PR1001 | Payment of annual fee |
St.27 status event code: A-4-4-U10-U11-oth-PR1001 |
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| PC1903 | Unpaid annual fee |
St.27 status event code: A-4-4-U10-U13-oth-PC1903 Not in force date: 19891027 Payment event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE |
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| PC1903 | Unpaid annual fee |
St.27 status event code: N-4-6-H10-H13-oth-PC1903 Ip right cessation event data comment text: Termination Category : DEFAULT_OF_REGISTRATION_FEE Not in force date: 19891027 |