DE69226593T2 - System zur Auslöschung von Echosignalen mit einem Referenzsignal zur Geistersignaleliminierung - Google Patents

System zur Auslöschung von Echosignalen mit einem Referenzsignal zur Geistersignaleliminierung

Info

Publication number
DE69226593T2
DE69226593T2 DE69226593T DE69226593T DE69226593T2 DE 69226593 T2 DE69226593 T2 DE 69226593T2 DE 69226593 T DE69226593 T DE 69226593T DE 69226593 T DE69226593 T DE 69226593T DE 69226593 T2 DE69226593 T2 DE 69226593T2
Authority
DE
Germany
Prior art keywords
echo signals
reference signal
signal
elimination
ghost
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 - Lifetime
Application number
DE69226593T
Other languages
English (en)
Other versions
DE69226593D1 (de
Inventor
David Koo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
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 Philips Electronics NV filed Critical Philips Electronics NV
Application granted granted Critical
Publication of DE69226593D1 publication Critical patent/DE69226593D1/de
Publication of DE69226593T2 publication Critical patent/DE69226593T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/24—Testing correct operation
    • H04L1/242—Testing correct operation by comparing a transmitted test signal with a locally generated replica
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0244—Channel estimation channel estimation algorithms using matrix methods with inversion
    • 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
    • H04N5/211—Ghost signal cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Picture Signal Circuits (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Noise Elimination (AREA)
DE69226593T 1991-05-10 1992-05-07 System zur Auslöschung von Echosignalen mit einem Referenzsignal zur Geistersignaleliminierung Expired - Lifetime DE69226593T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/698,521 US5121211A (en) 1990-10-09 1991-05-10 System for echo cancellation comprising an improved ghost cancellation reference signal
PCT/NL1992/000083 WO1992021202A1 (en) 1991-05-10 1992-05-07 A system for echo cancellation comprising a ghost cancellation reference signal

Publications (2)

Publication Number Publication Date
DE69226593D1 DE69226593D1 (de) 1998-09-17
DE69226593T2 true DE69226593T2 (de) 1999-03-11

Family

ID=24805610

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226593T Expired - Lifetime DE69226593T2 (de) 1991-05-10 1992-05-07 System zur Auslöschung von Echosignalen mit einem Referenzsignal zur Geistersignaleliminierung

Country Status (13)

Country Link
US (1) US5121211A (de)
EP (1) EP0538466B1 (de)
JP (1) JP3299536B2 (de)
KR (1) KR100286507B1 (de)
AU (1) AU658641B2 (de)
BR (1) BR9205262A (de)
CA (1) CA2086122C (de)
DE (1) DE69226593T2 (de)
ES (1) ES2121863T3 (de)
FI (1) FI110741B (de)
HK (1) HK1013388A1 (de)
SG (1) SG49162A1 (de)
WO (1) WO1992021202A1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5283650A (en) * 1990-04-04 1994-02-01 North American Philips Corporation System for ghost cancellation comprising an improved GCR signal sequence
US5179444A (en) * 1990-10-09 1993-01-12 North American Philips Corporation System for echo cancellation comprising an improved ghost cancellation reference signal
US5278872A (en) * 1991-05-28 1994-01-11 North American Philips Corporation System and circuit architecture for echo cancellation and a television receiver comprising same
US6937292B1 (en) * 1992-04-22 2005-08-30 Samsung Electronics Co., Ltd. Ghost cancellation reference signal with bessel chirps and PN sequences, and TV receiver using such signal
US5432557A (en) * 1992-09-07 1995-07-11 U.S. Philips Corporation Extended television signal receiver
EP0587224B1 (de) * 1992-09-07 1998-07-29 Philips Electronics N.V. Empfänger für erweitertes Fernsehsignal
KR0126907B1 (ko) * 1992-12-29 1997-12-29 윤종용 적응적 신호레벨조절기능을 구비한 고스트제거장치
US5465396A (en) * 1993-01-12 1995-11-07 Usa Digital Radio Partners, L.P. In-band on-channel digital broadcasting
US5321512A (en) * 1993-05-07 1994-06-14 Zoran Corporation Ghost signal cancellation system using feedforward and feedback filters for television signals
US5796773A (en) * 1994-03-22 1998-08-18 Trimble Navigation Limited Compensating for multipath errors, ionospheric time delay and noise errors in differential satellite positioning systems
IL114471A0 (en) * 1994-07-12 1996-01-31 Usa Digital Radio Partners L P Method and system for simultaneously broadcasting and analog signals
US5956624A (en) * 1994-07-12 1999-09-21 Usa Digital Radio Partners Lp Method and system for simultaneously broadcasting and receiving digital and analog signals
US5630208A (en) * 1994-07-19 1997-05-13 Trimble Navigation Limited Adaptive multipath equalization
US5654766A (en) * 1995-06-29 1997-08-05 Philips Electronics North America Corporation Television tuning systems and methods employing use of ghost cancellation and antenna directionality control to produce a ghost-free television signal
US5619278A (en) * 1995-10-25 1997-04-08 U.S. Philips Corporation Method and apparatus for processing a ghost cancellation reference signal
US5761088A (en) 1995-12-18 1998-06-02 Philips Electronics North America Corporation Method and apparatus for channel identification using incomplete or noisy information
WO1998005167A1 (en) * 1996-07-30 1998-02-05 Tiernan Communications, Inc. System and method for digitally encoding and compressing vbi signals
US6128337A (en) * 1997-05-29 2000-10-03 Trimble Navigation Limited Multipath signal discrimination
US6140822A (en) * 1997-05-29 2000-10-31 Williams; Thomas H. System for signal path characterization with a reference signal using stepped-frequency increments
US6259891B1 (en) 1997-09-04 2001-07-10 Hughes Electronics Corporation Adapter and method for use in a portable communication signal receiver system
US6806915B2 (en) * 2001-05-03 2004-10-19 Koninklijke Philips Electronics N.V. Method and apparatus for echo cancellation in digital communications using an echo cancellation reference signal
KR20040041182A (ko) * 2002-11-08 2004-05-17 삼성전자주식회사 단일 반송파 수신장치의 등화기 및 그의 등화방법
US7304687B2 (en) 2004-12-07 2007-12-04 Sony Taiwan Limited Ghost cancellation system using wavelet processed ghost cancellation reference signal

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367489A (en) * 1980-08-14 1983-01-04 Rca Corporation Television ghost detection and cancellation system controlled over several lines of a vertical retrace interval
JPS6386968A (ja) * 1986-09-30 1988-04-18 Toshiba Corp ゴ−スト除去装置
JPS63185191A (ja) * 1987-01-27 1988-07-30 Mitsubishi Electric Corp バ−スト信号挿入装置
JP2534737B2 (ja) * 1987-11-24 1996-09-18 日本電気ホームエレクトロニクス株式会社 ゴ―スト除去用フィルタ回路
US4864403A (en) * 1988-02-08 1989-09-05 Rca Licensing Corporation Adaptive television ghost cancellation system including filter circuitry with non-integer sample delay
US4912557A (en) * 1988-05-16 1990-03-27 Faroudja Y C Control method for television ghost reduction system
US4980767A (en) * 1989-11-30 1990-12-25 At&T Bell Laboratories Technique for determining signal dispersion characteristics in communications systems
US5047859A (en) * 1990-10-09 1991-09-10 North American Philips Corporation Method and apparatus for communication channel identification and signal restoration

Also Published As

Publication number Publication date
JPH06500224A (ja) 1994-01-06
FI110741B (fi) 2003-03-14
EP0538466B1 (de) 1998-08-12
EP0538466A1 (de) 1993-04-28
ES2121863T3 (es) 1998-12-16
CA2086122A1 (en) 1992-11-11
HK1013388A1 (en) 1999-08-20
KR100286507B1 (ko) 2001-04-16
FI930047A0 (fi) 1993-01-07
CA2086122C (en) 2000-03-14
KR930701890A (ko) 1993-06-12
WO1992021202A1 (en) 1992-11-26
FI930047A (fi) 1993-01-07
US5121211A (en) 1992-06-09
AU1874092A (en) 1992-12-30
DE69226593D1 (de) 1998-09-17
JP3299536B2 (ja) 2002-07-08
BR9205262A (pt) 1993-07-20
SG49162A1 (en) 1998-05-18
AU658641B2 (en) 1995-04-27

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V., EINDHOVEN, N

8328 Change in the person/name/address of the agent

Representative=s name: VOLMER, G., DIPL.-ING., PAT.-ANW., 52066 AACHEN

R071 Expiry of right

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