CA2094391A1 - Systeme de reduction du brouillage pour la television numerique a haute definition - Google Patents
Systeme de reduction du brouillage pour la television numerique a haute definitionInfo
- Publication number
- CA2094391A1 CA2094391A1 CA2094391A CA2094391A CA2094391A1 CA 2094391 A1 CA2094391 A1 CA 2094391A1 CA 2094391 A CA2094391 A CA 2094391A CA 2094391 A CA2094391 A CA 2094391A CA 2094391 A1 CA2094391 A1 CA 2094391A1
- Authority
- CA
- Canada
- Prior art keywords
- channel interference
- high definition
- reduction system
- definition television
- digital high
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/24—Systems for the transmission of television signals using pulse code modulation
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
- H04L2025/03382—Single of vestigal sideband
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Television Systems (AREA)
- Picture Signal Circuits (AREA)
Abstract
Un système de réduction de brouillage dans un même canal pour la télévision numérique haute définition comprend un émetteur pourvu d'un filtre de pré-codage de traitement modulo 4. Un récepteur comprend deux modes de traitement vidéo pouvant être sélectionnés. Le premier mode comprend un filtre-peigne servant à éliminer les signaux de brouillage dans un même canal ainsi qu'un décodeur modulo 4 servant à rétablir le signal de données à quatre niveaux en dépit du signal de brouillage intersymboles introduit par le segment de filtre-peigne. Dans le mode alternatif pouvant être mis en fonctionnement en l'absence de signaux de brouillage dans le même canal, un limiteur de niveau et un postcodeur de niveau sont utilisés pour rétablir le signal précodé sous forme du signal de données à quatre niveaux original.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US601,169 | 1990-10-19 | ||
US07/601,169 US5086340A (en) | 1990-10-19 | 1990-10-19 | Co-channel interference reduction system for digital high definition television |
PCT/US1991/007697 WO1992007442A1 (fr) | 1990-10-19 | 1991-10-15 | Systeme de reduction de brouillage dans un meme canal pour la television numerique haute definition |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2094391A1 true CA2094391A1 (fr) | 1992-04-20 |
CA2094391C CA2094391C (fr) | 1999-06-08 |
Family
ID=24406486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002094391A Expired - Lifetime CA2094391C (fr) | 1990-10-19 | 1991-10-15 | Systeme de reduction du brouillage pour la television numerique a haute definition |
Country Status (8)
Country | Link |
---|---|
US (1) | US5086340A (fr) |
EP (1) | EP0553252B1 (fr) |
JP (1) | JP2718824B2 (fr) |
KR (1) | KR0142584B1 (fr) |
CA (1) | CA2094391C (fr) |
DE (1) | DE69126139T2 (fr) |
HK (1) | HK1000988A1 (fr) |
WO (1) | WO1992007442A1 (fr) |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5181112A (en) * | 1991-03-11 | 1993-01-19 | Zenith Electronics Corporation | Television signal transmission system with carrier offset compensation |
US5241385A (en) * | 1991-03-11 | 1993-08-31 | Zenith Electronics Corporation | Television signal transmission system with carrier offset compensation |
USRE42643E1 (en) | 1991-03-27 | 2011-08-23 | Panasonic Corporation | Communication system |
USRE39890E1 (en) | 1991-03-27 | 2007-10-23 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5600672A (en) | 1991-03-27 | 1997-02-04 | Matsushita Electric Industrial Co., Ltd. | Communication system |
USRE40241E1 (en) | 1991-03-27 | 2008-04-15 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5260793A (en) * | 1991-07-18 | 1993-11-09 | Zenith Electronics Corporation | Receiver post coder selection circuit |
US7158577B1 (en) | 1992-03-26 | 2007-01-02 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6724976B2 (en) | 1992-03-26 | 2004-04-20 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US7894541B2 (en) * | 1992-03-26 | 2011-02-22 | Panasonic Corporation | Communication system |
CA2226489C (fr) | 1992-03-26 | 2001-07-24 | Matsushita Electric Industrial Co., Ltd. | Systeme de communication |
USRE38513E1 (en) | 1992-03-26 | 2004-05-11 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US6728467B2 (en) * | 1992-03-26 | 2004-04-27 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5802241A (en) | 1992-03-26 | 1998-09-01 | Matsushita Electric Industrial Co., Ltd. | Communication system |
US5892879A (en) | 1992-03-26 | 1999-04-06 | Matsushita Electric Industrial Co., Ltd. | Communication system for plural data streams |
US5325188A (en) * | 1992-05-14 | 1994-06-28 | Hitachi America, Ltd. | Apparatus for NTSC signal interference cancellation through the use of digital recursive notch filters |
US5282023A (en) * | 1992-05-14 | 1994-01-25 | Hitachi America, Ltd. | Apparatus for NTSC signal interference cancellation through the use of digital recursive notch filters |
US5400084A (en) * | 1992-05-14 | 1995-03-21 | Hitachi America, Ltd. | Method and apparatus for NTSC signal interference cancellation using recursive digital notch filters |
US5325204A (en) * | 1992-05-14 | 1994-06-28 | Hitachi America, Ltd. | Narrowband interference cancellation through the use of digital recursive notch filters |
US5438369A (en) * | 1992-08-17 | 1995-08-01 | Zenith Electronics Corporation | Digital data interleaving system with improved error correctability for vertically correlated interference |
US5410569A (en) * | 1992-08-19 | 1995-04-25 | Zenith Electronics Corp. | Data slicing system for HDTV receiver |
US5453797A (en) * | 1993-02-22 | 1995-09-26 | Massachusetts Institute Of Technology | Method and apparatus for decoding broadcast digital HDTV in the presence of quasi-cyclostationary interference |
US5565926A (en) * | 1993-05-07 | 1996-10-15 | Philips Electronics North America Corporation | Method and apparatus for communicating digital television signals using a signal constellation formed by four signal constellations placed in the quadrants |
US5619534A (en) * | 1993-05-07 | 1997-04-08 | Philips Electronics North America Corporatioin | Method and apparatus for reducing precoding loss when using a post-comb filtering approach to reduce co-channel interference in high definition television transmission |
US5452015A (en) * | 1994-02-10 | 1995-09-19 | Philips Electronics North America Corporation | Method and apparatus for combating co-channel NTSC interference for digital TV transmission |
US5572249A (en) * | 1994-07-07 | 1996-11-05 | Philips Electronics North America Corporation | Method and apparatus for optimal NTSC rejection filtering and transmitter and receiver comprising same |
US5583889A (en) * | 1994-07-08 | 1996-12-10 | Zenith Electronics Corporation | Trellis coded modulation system for HDTV |
KR100320449B1 (ko) * | 1994-12-16 | 2002-05-13 | 구자홍 | 고선명티브이수상기에서엔티에스씨인접채널의간섭판별장치 |
US5510845A (en) * | 1994-12-23 | 1996-04-23 | Samsung Electronics Co., Ltd. | Receivers for digital signals buried within the trace and retrace intervals of NTSC television signals |
US5572262A (en) * | 1994-12-29 | 1996-11-05 | Philips Electronics North America Corporation | Receiver based methods and devices for combating co-channel NTSC interference in digital transmission |
US5602583A (en) * | 1995-02-10 | 1997-02-11 | Zenith Electronics Corporation | NTSC rejection filter with switched tomlinson precoder for reducing NTSC co-channel interference in ATV receivers |
US5648822A (en) * | 1995-05-19 | 1997-07-15 | Philips Electronics North America Corporation | Method and apparatus for combating co-channel NTSC interference using a variable-comb filter for digital TV transmission |
US5594496A (en) * | 1995-06-07 | 1997-01-14 | Zenith Electronics Corporation | Detection of co-channel interference in digital television signals |
KR0172885B1 (ko) * | 1995-08-25 | 1999-03-20 | 구자홍 | 에이치디티브이용 통합 트렐리스 디코더 |
US5923711A (en) * | 1996-04-02 | 1999-07-13 | Zenith Electronics Corporation | Slice predictor for a signal receiver |
KR0170345B1 (ko) * | 1996-06-11 | 1999-03-20 | 김광호 | 고해상도 텔레비젼 수신기의 자동 이득 조절회로 및 방법 |
US6084642A (en) * | 1996-10-07 | 2000-07-04 | Zenith Electronics Corporation | Receiver for adjusting sync levels in VSB systems |
US5848108A (en) * | 1996-11-29 | 1998-12-08 | Northern Telecom Limited | Selective filtering for co-channel interference reduction |
KR100247967B1 (ko) * | 1997-07-09 | 2000-03-15 | 윤종용 | 동일채널간섭검출기와그방법 |
KR100238311B1 (ko) * | 1997-08-04 | 2000-01-15 | 윤종용 | 시뮬캐스트 수신기의 동일채널 간섭 제거기와 그 방법 |
JP2001519993A (ja) | 1998-02-06 | 2001-10-23 | ゼニス エレクトロニクス コーポレイション | Vsbベースバンド信号をディジタルテレビジョン受信機のrf入力へ提供するための低コストvsbエンコーダ及びrf変調器 |
US6667760B1 (en) * | 1998-02-20 | 2003-12-23 | Samsung Electronics Co., Ltd. | Receiver for digital television signals having carriers near upper frequency boundaries of TV broadcasting channels |
FI115864B (fi) * | 1999-09-06 | 2005-07-29 | Nokia Corp | Sarjamuotoinen rajapinta ja menetelmä digitaalisen datan siirtämiseksi sarjamuotoisen rajapinnan yli |
US7109939B2 (en) * | 2002-05-14 | 2006-09-19 | Hrl Laboratories, Llc | Wideband antenna array |
US7940839B2 (en) * | 2004-01-26 | 2011-05-10 | Diablo Technologies Inc. | Fully adaptive equalization for high loss communications channels |
KR100721776B1 (ko) * | 2005-07-20 | 2007-05-25 | 노키아 코포레이션 | 디지털 광대역 전송을 제공하기 위한 방법, 시스템 및네트웍 개체 |
US7693501B2 (en) * | 2006-12-21 | 2010-04-06 | Intel Corporation | Techniques to deterministically reduce signal interference |
US20110166968A1 (en) * | 2010-01-06 | 2011-07-07 | Richard Yin-Ching Houng | System and method for activating display device feature |
US8938041B2 (en) | 2012-12-18 | 2015-01-20 | Intel Corporation | Techniques for managing interference in multiple channel communications system |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4032847A (en) * | 1976-01-05 | 1977-06-28 | Raytheon Company | Distortion adapter receiver having intersymbol interference correction |
JPS5474617A (en) * | 1977-11-28 | 1979-06-14 | Toshiba Corp | Receiver |
US4216496A (en) * | 1978-02-14 | 1980-08-05 | Independent Broadcasting Authority | Apparatus for detecting and measuring interference in transmission signals |
US4503545A (en) * | 1980-02-19 | 1985-03-05 | Paradyne Corporation | System for evaluating transmission line impairments |
US4343019A (en) * | 1981-01-16 | 1982-08-03 | Rca Corporation | Apparatus for reducing the effect of co-channel interference on synchronizing pulses |
US4491953A (en) * | 1982-09-09 | 1985-01-01 | At&T Bell Laboratories | Dual mode coding |
DE3343262A1 (de) * | 1983-11-30 | 1985-06-05 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren und anordnung zur unterdrueckung von stoerungen im leuchtdichtekanal eines farbfernsehdecoders |
US4609907A (en) * | 1984-10-31 | 1986-09-02 | International Business Machines Corporation | Dual channel partial response system |
DE3685536T2 (de) * | 1985-08-28 | 1993-01-21 | Nippon Electric Co | Entscheidungsrueckgekoppelter entzerrer mit musterdetektor. |
NL8700125A (nl) * | 1987-01-20 | 1988-08-16 | Philips Nv | Inrichting voor het bestrijden van intersymboolinterferentie en ruis. |
NL8701331A (nl) * | 1987-06-09 | 1989-01-02 | Philips Nv | Datatransmissiesysteem bevattende een beslissingsteruggekoppelde egalisator en gebruik makende van partieleresponsie technieken. |
US4890283A (en) * | 1987-11-19 | 1989-12-26 | North American Philips Corporation | High definition television augmentation channel |
DE3807248A1 (de) * | 1988-03-05 | 1989-09-14 | Grundig Emv | Einrichtung zur codierung und decodierung von farbfernsehsignalen nach dem pal-standard |
US4951146A (en) * | 1989-01-17 | 1990-08-21 | Zenith Electronics Corporation | Directionally controlled dispersive filtering for reducing co-channel interference |
-
1990
- 1990-10-19 US US07/601,169 patent/US5086340A/en not_active Expired - Lifetime
-
1991
- 1991-10-15 KR KR1019930701132A patent/KR0142584B1/ko not_active IP Right Cessation
- 1991-10-15 CA CA002094391A patent/CA2094391C/fr not_active Expired - Lifetime
- 1991-10-15 WO PCT/US1991/007697 patent/WO1992007442A1/fr active IP Right Grant
- 1991-10-15 DE DE69126139T patent/DE69126139T2/de not_active Expired - Lifetime
- 1991-10-15 JP JP3518514A patent/JP2718824B2/ja not_active Expired - Lifetime
- 1991-10-15 EP EP91919753A patent/EP0553252B1/fr not_active Expired - Lifetime
-
1997
- 1997-12-27 HK HK97102640A patent/HK1000988A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH06502520A (ja) | 1994-03-17 |
KR930702855A (ko) | 1993-09-09 |
DE69126139D1 (de) | 1997-06-19 |
EP0553252A1 (fr) | 1993-08-04 |
EP0553252B1 (fr) | 1997-05-14 |
HK1000988A1 (en) | 1998-05-15 |
JP2718824B2 (ja) | 1998-02-25 |
DE69126139T2 (de) | 1997-11-27 |
KR0142584B1 (ko) | 1998-07-15 |
WO1992007442A1 (fr) | 1992-04-30 |
US5086340A (en) | 1992-02-04 |
CA2094391C (fr) | 1999-06-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry | ||
MKEX | Expiry |
Effective date: 20111015 |