MXPA04000971A - APARATO Y MeTODO PARA DETECTAR ONDULACIONES PROVOCADAS POR LA PROPAGACION DE TRAYECTORIAS MULTIPLES Y CONTROLAR EL SINTONIZADOR Y LA ANTENA DE RECEPCION. - Google Patents

APARATO Y MeTODO PARA DETECTAR ONDULACIONES PROVOCADAS POR LA PROPAGACION DE TRAYECTORIAS MULTIPLES Y CONTROLAR EL SINTONIZADOR Y LA ANTENA DE RECEPCION.

Info

Publication number
MXPA04000971A
MXPA04000971A MXPA04000971A MXPA04000971A MXPA04000971A MX PA04000971 A MXPA04000971 A MX PA04000971A MX PA04000971 A MXPA04000971 A MX PA04000971A MX PA04000971 A MXPA04000971 A MX PA04000971A MX PA04000971 A MXPA04000971 A MX PA04000971A
Authority
MX
Mexico
Prior art keywords
tuner
signal
receiving antenna
multipath propagation
controlling receiving
Prior art date
Application number
MXPA04000971A
Other languages
English (en)
Inventor
Ward Muterspaugh Max
Original Assignee
Thomson Licensing Sa
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 filed Critical Thomson Licensing Sa
Publication of MXPA04000971A publication Critical patent/MXPA04000971A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
    • 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
    • H04B1/1081—Reduction of multipath noise
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/125—Means for positioning
    • H01Q1/1257—Means for positioning using the received signal strength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
    • 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
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/005—Control of transmission; Equalising
    • 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
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H04L27/063—Superheterodyne receivers
    • 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
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • 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
    • H04B7/0802—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 antenna selection
    • 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
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Noise Elimination (AREA)

Abstract

Se proporciona una recepcion de senal mejorada en un receptor de senal digital de television al identificar y disminuir los efectos de senal de trayectorias multiples antes de llevar a cabo las operaciones de demodulacion y ecualizacion. De conformidad con una modalidad ejemplificativa, se recibe (30) una senal digital de television que tiene efectos de senal de trayectorias multiples, lo cual provoca una pluralidad de ondulaciones en la senal recibida. Se detecta (24) la amplitud de por lo menos una de las ondulaciones y la separacion de frecuencia entre por lo menos dos de las ondulaciones. Por lo menos uno de una antena (30) y un sintonizador (21) se controla dependiendo de la deteccion (24). Se pueden llevara cabo las operaciones (25) de demodulacion y ecualizacion de senal despues de que por lo menos se controle uno de la antena y el sintonizador.
MXPA04000971A 2001-08-02 2001-08-02 APARATO Y MeTODO PARA DETECTAR ONDULACIONES PROVOCADAS POR LA PROPAGACION DE TRAYECTORIAS MULTIPLES Y CONTROLAR EL SINTONIZADOR Y LA ANTENA DE RECEPCION. MXPA04000971A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2001/024520 WO2003013021A1 (en) 2001-08-02 2001-08-02 Apparatus and method for detecting ripples caused by multipath propagation and controlling receiving antenna and tuner

Publications (1)

Publication Number Publication Date
MXPA04000971A true MXPA04000971A (es) 2004-04-20

Family

ID=21742757

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA04000971A MXPA04000971A (es) 2001-08-02 2001-08-02 APARATO Y MeTODO PARA DETECTAR ONDULACIONES PROVOCADAS POR LA PROPAGACION DE TRAYECTORIAS MULTIPLES Y CONTROLAR EL SINTONIZADOR Y LA ANTENA DE RECEPCION.

Country Status (8)

Country Link
US (1) US7215939B2 (es)
EP (1) EP1413067B1 (es)
JP (1) JP2004537913A (es)
KR (1) KR100820932B1 (es)
CN (1) CN100512041C (es)
DE (1) DE60116502T2 (es)
MX (1) MXPA04000971A (es)
WO (1) WO2003013021A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7298396B2 (en) * 2003-08-25 2007-11-20 Spx Corporation Apparatus and method for monitoring transmission systems using embedded test signals
US7352408B2 (en) * 2004-02-06 2008-04-01 Daimlerchrysler Ag Suppression of multipath effects in the transmission of analog TV signals
US8160526B2 (en) * 2004-08-13 2012-04-17 Thomson Licensing Filter configuration for a receiver of multiple broadcast standard signals
JP4075920B2 (ja) * 2005-04-04 2008-04-16 松下電器産業株式会社 受信装置
KR100828872B1 (ko) * 2006-10-23 2008-05-09 엘지이노텍 주식회사 Ｒｆ 센서 시스템
JP2011234223A (ja) * 2010-04-28 2011-11-17 Toshiba Corp 等化装置及び放送受信装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3536169C2 (de) * 1985-10-10 1995-01-26 Deutsche Aerospace Verfahren zur Entzerrung von Kurzwellensignalen
GB2196211B (en) * 1986-09-12 1990-07-04 British Broadcasting Corp Communications system
JP3120457B2 (ja) * 1991-02-19 2000-12-25 クラリオン株式会社 ダイバーシティ方式のｆｍ受信装置
US5325130A (en) * 1993-03-31 1994-06-28 Westinghouse Electric Corporation Ghost canceller
US5526378A (en) 1994-12-14 1996-06-11 Thomson Consumer Electronics, Inc. Blind multipath correction for digital communication channel
US5815529A (en) * 1996-04-04 1998-09-29 Lucent Technologies Inc. Transmission system for digital audio broadcasting that incorporates a rotator in the transmitter
US5748686A (en) * 1996-04-04 1998-05-05 Globespan Technologies, Inc. System and method producing improved frame synchronization in a digital communication system
US6002361A (en) 1996-04-30 1999-12-14 Trimble Navigation Limited Direct integrated approach to multipath signal identification
US5963601A (en) 1996-05-20 1999-10-05 Trimble Navigation Limited Variable suppression of multipath signal effects
US5903597A (en) 1996-05-20 1999-05-11 Trimble Navigation Limited Suppression on multipath signal effects
US5828694A (en) 1996-07-01 1998-10-27 Trimble Navigation Limited Determination of multipath tracking error
US6128337A (en) 1997-05-29 2000-10-03 Trimble Navigation Limited Multipath signal discrimination
US6219379B1 (en) 1998-11-17 2001-04-17 Philips Electronics North America Corporation VSB receiver with complex equalization for improved multipath performance
JP3570259B2 (ja) * 1998-11-25 2004-09-29 松下電工株式会社 データ伝送装置
US6081301A (en) 1999-01-13 2000-06-27 Samsung Electronics Co., Ltd. DTV circuitry for measuring multipath distortion based on ghosting of data segment synchronizing signals
JP3608413B2 (ja) * 1999-01-19 2005-01-12 オムロン株式会社 スイッチング電源
JP2000332665A (ja) * 1999-05-20 2000-11-30 Toyota Motor Corp ダイバーシチ受信装置およびダイバーシチ受信方法
JP3717038B2 (ja) * 1999-07-23 2005-11-16 日本放送協会 Ｏｆｄｍ信号のダイバーシティ受信装置
JP3550326B2 (ja) * 1999-09-10 2004-08-04 シャープ株式会社 デジタル放送受信機

Also Published As

Publication number Publication date
KR20040019377A (ko) 2004-03-05
WO2003013021A1 (en) 2003-02-13
KR100820932B1 (ko) 2008-04-10
DE60116502D1 (de) 2006-03-30
CN1550073A (zh) 2004-11-24
US20040192209A1 (en) 2004-09-30
JP2004537913A (ja) 2004-12-16
CN100512041C (zh) 2009-07-08
US7215939B2 (en) 2007-05-08
EP1413067A1 (en) 2004-04-28
DE60116502T2 (de) 2006-09-07
EP1413067B1 (en) 2006-01-04

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