WO2001019075A3 - Method and apparatus for reducing multipath distortion in a television signal - Google Patents

Method and apparatus for reducing multipath distortion in a television signal Download PDF

Info

Publication number
WO2001019075A3
WO2001019075A3 PCT/US2000/024708 US0024708W WO0119075A3 WO 2001019075 A3 WO2001019075 A3 WO 2001019075A3 US 0024708 W US0024708 W US 0024708W WO 0119075 A3 WO0119075 A3 WO 0119075A3
Authority
WO
WIPO (PCT)
Prior art keywords
television signal
multipath distortion
reducing multipath
spatially
signal
Prior art date
Application number
PCT/US2000/024708
Other languages
French (fr)
Other versions
WO2001019075A2 (en
Inventor
Thomas Howard Bruce Cranor
Edward Allen Hall
Original Assignee
Thomson Licensing Sa
Thomas Howard Bruce Cranor
Edward Allen Hall
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 Thomson Licensing Sa, Thomas Howard Bruce Cranor, Edward Allen Hall filed Critical Thomson Licensing Sa
Priority to AU73616/00A priority Critical patent/AU7361600A/en
Priority to EP00961698A priority patent/EP1219109A2/en
Priority to US10/069,332 priority patent/US6911947B1/en
Priority to JP2001522761A priority patent/JP2003513486A/en
Priority to MXPA02002405A priority patent/MXPA02002405A/en
Priority to KR1020027003094A priority patent/KR20020033788A/en
Publication of WO2001019075A2 publication Critical patent/WO2001019075A2/en
Publication of WO2001019075A3 publication Critical patent/WO2001019075A3/en

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
    • H04N5/211—Ghost signal cancellation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
    • H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
    • H01Q7/08—Ferrite rod or like elongated core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/265—Open ring dipoles; Circular dipoles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Noise Elimination (AREA)
  • Radio Relay Systems (AREA)
  • Picture Signal Circuits (AREA)

Abstract

A method and apparatus for reducing multipath distortion in a television signal inlcudes a plurality of antenna elements for receiving spatially unique replicas of a desired television signal. The plurality of spatially unique replicas of the television signal are coupled to an adaptive combiner for generating a spatially combined signal to be input to a television receiver.
PCT/US2000/024708 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in a television signal WO2001019075A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AU73616/00A AU7361600A (en) 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in a television signal
EP00961698A EP1219109A2 (en) 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in a television signal
US10/069,332 US6911947B1 (en) 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in a television signal
JP2001522761A JP2003513486A (en) 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in television signals
MXPA02002405A MXPA02002405A (en) 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in a television signal.
KR1020027003094A KR20020033788A (en) 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in a television signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15285999P 1999-09-08 1999-09-08
US60/152,859 1999-09-08

Publications (2)

Publication Number Publication Date
WO2001019075A2 WO2001019075A2 (en) 2001-03-15
WO2001019075A3 true WO2001019075A3 (en) 2001-09-20

Family

ID=22544757

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/024708 WO2001019075A2 (en) 1999-09-08 2000-09-08 Method and apparatus for reducing multipath distortion in a television signal

Country Status (8)

Country Link
EP (1) EP1219109A2 (en)
JP (1) JP2003513486A (en)
KR (2) KR100742172B1 (en)
CN (2) CN1249989C (en)
AU (1) AU7361600A (en)
DE (1) DE60043312D1 (en)
MX (1) MXPA02002405A (en)
WO (1) WO2001019075A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7034893B2 (en) * 2001-03-30 2006-04-25 Broadcom Corporation Method and apparatus for reception of terrestrial digital television signals
DE10224536B4 (en) 2002-05-31 2009-04-23 Harman Becker Automotive Systems (Xsys Division) Gmbh Method and circuit arrangement for multipath reception
KR100482286B1 (en) * 2002-09-27 2005-04-13 한국전자통신연구원 Digital broadcasting service receiver for improving reception ability by switched beamforming
KR100500661B1 (en) 2003-06-14 2005-07-12 한국전자통신연구원 Apparatus and method for selecting optimal beam for digital tv receiver
US7026989B1 (en) * 2004-01-23 2006-04-11 Itt Manufacturing Enterprises, Inc. Methods and apparatus for shaping antenna beam patterns of phased array antennas
KR100583240B1 (en) * 2004-11-26 2006-05-25 한국전자통신연구원 Optimal beam selection method for improving digital broadcasting reception performance, and digital broadcasting receiving apparatus
US7714780B2 (en) * 2006-03-10 2010-05-11 Broadcom Corporation Beamforming RF circuit and applications thereof
CN104900990B (en) * 2015-06-09 2019-04-23 联想(北京)有限公司 Antenna and electronic equipment including the antenna

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100496A (en) * 1975-11-12 1978-07-11 Matsushita Electric Industrial Co., Ltd. Ghost cancellation device
US4338606A (en) * 1978-12-21 1982-07-06 Sony Corporation Antenna system with variable directivity
US4397041A (en) * 1980-03-03 1983-08-02 Pioneer Electronic Corporation Complex antenna system and FM/AM receiver
US4497067A (en) * 1982-07-14 1985-01-29 Nec Corporation Interference cancellation type space diversity system
US4498885A (en) * 1982-07-14 1985-02-12 Nec Corporation Space diversity system
DE3427629A1 (en) * 1984-07-26 1986-01-30 Siemens AG, 1000 Berlin und 8000 München Ring antenna using printed-circuit technology
EP0221475A2 (en) * 1985-10-26 1987-05-13 Kabushiki Kaisha Toshiba An apparatus for cancelling television fading interference
GB2257605A (en) * 1991-07-12 1993-01-13 Paul Victor Brennan Diversity antenna system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121219A (en) * 1976-04-12 1978-10-17 Connor Gerald O Dipole resonent loop antenna
JPS5585106A (en) * 1978-12-21 1980-06-26 Sony Corp Antenna unit
JPH069342B2 (en) * 1985-09-24 1994-02-02 日産自動車株式会社 Antenna device
JPH0879570A (en) * 1994-09-09 1996-03-22 Hitachi Ltd Television receiver
CA2211619C (en) * 1995-11-29 2002-01-29 Ntt Mobile Communications Network Inc. Diversity receiver and its control method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4100496A (en) * 1975-11-12 1978-07-11 Matsushita Electric Industrial Co., Ltd. Ghost cancellation device
US4338606A (en) * 1978-12-21 1982-07-06 Sony Corporation Antenna system with variable directivity
US4397041A (en) * 1980-03-03 1983-08-02 Pioneer Electronic Corporation Complex antenna system and FM/AM receiver
US4497067A (en) * 1982-07-14 1985-01-29 Nec Corporation Interference cancellation type space diversity system
US4498885A (en) * 1982-07-14 1985-02-12 Nec Corporation Space diversity system
DE3427629A1 (en) * 1984-07-26 1986-01-30 Siemens AG, 1000 Berlin und 8000 München Ring antenna using printed-circuit technology
EP0221475A2 (en) * 1985-10-26 1987-05-13 Kabushiki Kaisha Toshiba An apparatus for cancelling television fading interference
GB2257605A (en) * 1991-07-12 1993-01-13 Paul Victor Brennan Diversity antenna system

Also Published As

Publication number Publication date
CN1734837A (en) 2006-02-15
EP1219109A2 (en) 2002-07-03
AU7361600A (en) 2001-04-10
DE60043312D1 (en) 2009-12-24
KR20050095903A (en) 2005-10-04
JP2003513486A (en) 2003-04-08
KR100742172B1 (en) 2007-07-25
MXPA02002405A (en) 2002-08-28
KR20020033788A (en) 2002-05-07
WO2001019075A2 (en) 2001-03-15
CN1399843A (en) 2003-02-26
CN1249989C (en) 2006-04-05

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