BR0005538A - Controle de magnitude de vetor de um filtro de pente - Google Patents

Controle de magnitude de vetor de um filtro de pente

Info

Publication number
BR0005538A
BR0005538A BR0005538-7A BR0005538A BR0005538A BR 0005538 A BR0005538 A BR 0005538A BR 0005538 A BR0005538 A BR 0005538A BR 0005538 A BR0005538 A BR 0005538A
Authority
BR
Brazil
Prior art keywords
values
absolute
vector magnitude
comb filter
series
Prior art date
Application number
BR0005538-7A
Other languages
English (en)
Other versions
BRPI0005538B1 (pt
Inventor
Mark Francis Rumreich
John Kimball Lufkin
Original Assignee
Thomson Licensinc S A
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 Licensinc S A filed Critical Thomson Licensinc S A
Publication of BR0005538A publication Critical patent/BR0005538A/pt
Publication of BRPI0005538B1 publication Critical patent/BRPI0005538B1/pt

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/22—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating trigonometric functions; for conversion of co-ordinates; for computations involving vector quantities
    • 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
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H04N9/78—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase for separating the brightness signal or the chrominance signal from the colour television signal, e.g. using comb filter

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Algebra (AREA)
  • Processing Of Color Television Signals (AREA)
  • Image Processing (AREA)
  • Picture Signal Circuits (AREA)

Abstract

"CONTROLE DE MAGNITUDE DE VETOR DE UM FILTRO DE PENTE" Um conjunto de circuitos de filtro de pente adaptativos responde a valores absolutos de vetor de crominância, de modo a se inibirem pontos suspensos. Os valores absolutos de vetor de crominância são calculados pelo retardamento (31) do sinal de vídeo filtrado por passagem de faixa, de modo a se obter concomitantemente uma série de valores absolutos de amostra. A série de valores absolutos de amostra é pesada (32) e somada (33). O máximo (37) e o mínimo (38) da série de valores absolutos de amostra são selecionados e respectivamente pesados (34, 39). O máximo e o mínimo pesados são combinados (35) com a soma das amostras pesadas, de modo a se obterem valores absolutos de vetor de crominância aproximados. São mostrados circuitos exemplares que desenvolvem valores de magnitude de vetor de crominância em tempo real dentro de 1,5% p-p de erro. Os circuitos de aproximação de magnitude de vetor podem ser usados no cálculo de vetores representados por amostras sucessivas que não têm uma relação ortogonal.
BRPI0005538A 1999-12-03 2000-11-23 método e aparelho para determinar a magnitude aproximada dos vetores de crominância BRPI0005538B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/454,037 US6384873B1 (en) 1999-12-03 1999-12-03 Vector magnitude control of a comb filter

Publications (2)

Publication Number Publication Date
BR0005538A true BR0005538A (pt) 2001-07-31
BRPI0005538B1 BRPI0005538B1 (pt) 2016-11-29

Family

ID=23803029

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0005538A BRPI0005538B1 (pt) 1999-12-03 2000-11-23 método e aparelho para determinar a magnitude aproximada dos vetores de crominância

Country Status (8)

Country Link
US (1) US6384873B1 (pt)
EP (1) EP1107612B1 (pt)
JP (1) JP4776070B2 (pt)
KR (1) KR100752258B1 (pt)
CN (3) CN1319388C (pt)
BR (1) BRPI0005538B1 (pt)
DE (1) DE60045237D1 (pt)
MX (1) MXPA00011720A (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60233383D1 (de) * 2001-01-24 2009-10-01 Asahi Chemical Ind Trennstufe fuer y/c signale und sein verfahren
US6738097B2 (en) * 2001-04-11 2004-05-18 Oki Electric Industry Co, Ltd. Composite video signal decoder having stripe component judging section
US7268821B2 (en) * 2002-03-27 2007-09-11 Thomson Licensing Upconversion with noise constrained diagonal enhancement
CN1643916B (zh) * 2002-03-27 2010-05-26 汤姆森特许公司 上变换隔行视频为逐行视频的方法及电路
US8553155B2 (en) * 2003-03-05 2013-10-08 Broadcom Corporation System and method for three dimensional comb filtering
US7227587B2 (en) 2003-03-05 2007-06-05 Broadcom Corporation System and method for three dimensional comb filtering
KR20060021391A (ko) * 2003-06-20 2006-03-07 코닌클리케 필립스 일렉트로닉스 엔.브이. 휘도 및 컬러 분리
CN101605268B (zh) * 2008-06-10 2011-02-16 凌阳科技股份有限公司 梳型滤波器上的边缘方向检测的系统
US8731072B2 (en) * 2010-06-07 2014-05-20 Stmicroelectronics International N.V. Adaptive filter for video signal processing for decoder that selects rate of switching between 2D and 3D filters for separation of chroma and luma signals

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US4146840A (en) * 1978-01-31 1979-03-27 Harris Corporation Technique for obtaining symbol timing for equalizer weights
US4240105A (en) * 1979-08-20 1980-12-16 Yves C. Faroudja Method and apparatus for separation of chrominance and luminance with adaptive comb filtering in a quadrature modulated color television system
US4587552A (en) * 1983-09-02 1986-05-06 Rca Corporation Apparatus for generating the magnitude of the vector sum of two orthogonal signals as for use in a digital TV receiver
US4599701A (en) * 1983-10-19 1986-07-08 Grumman Aerospace Corporation Complex magnitude computation
US4644387A (en) * 1985-04-25 1987-02-17 Rca Corporation Plural input television receiver having peaking circuit and chrominance band reject filter in a video signal channel
JPS6345988A (ja) * 1986-04-09 1988-02-26 Hitachi Ltd 輝度信号・色信号分離回路
US4847682A (en) 1987-12-18 1989-07-11 North American Philips Corporation Adaptive comb filter for artifact-free decoding
US4963979A (en) * 1989-04-20 1990-10-16 Rca Licensing Corporation Television receiver with auxiliary input connector for video signals of a separated Y-C format
US4935807A (en) * 1989-04-20 1990-06-19 Rca Licensing Corporation Television receiver with auxiliary input connector providing a chrominance signal subjected to pre-distortion for video signals of a separated Y-C format
US4963958A (en) * 1989-04-20 1990-10-16 Rca Licensing Corporation Television receiver with auxiliary input connector providing a second luminance signal subjected to enhancing video signals of a separated Y-C format
US5005074A (en) * 1989-11-17 1991-04-02 Rca Licensing Corporation Adaptive multistandard video comb filter
GB2247806B (en) 1990-07-23 1994-11-09 Mitsubishi Electric Corp Brightness signal/color signal separating filter
US5532820A (en) * 1990-08-17 1996-07-02 Samsung Electronics Co., Ltd. Digital modulators for use with sub-nyquist sampling of raster-scanned samples of image intensity
US6246827B1 (en) * 1990-08-17 2001-06-12 Samsung Electronics Co., Ltd. Deemphasis and subsequent reemphasis of high-energy reversed-spectrum components of a folded video signal
JPH04109812A (ja) * 1990-08-29 1992-04-10 Mitsubishi Electric Corp 交流電気量の振幅値演算装置
KR940001442B1 (ko) * 1991-07-26 1994-02-23 주식회사 금성사 휘도신호 및 색신호 분리 시스템
JP2792311B2 (ja) * 1992-01-31 1998-09-03 日本電気株式会社 多チャンネルエコー除去方法および装置
CA2113919A1 (en) * 1992-06-18 1993-12-23 Norio Yamaguchi Maximum likelihood sequence estimator and maximum likelihood sequence estimation method
US5307405A (en) * 1992-09-25 1994-04-26 Qualcomm Incorporated Network echo canceller
US5416532A (en) 1993-03-17 1995-05-16 Samsung Electronics Co., Ltd. Adaptive video peaking circuitry using cross-faders
JP3299810B2 (ja) 1993-04-28 2002-07-08 三菱電機株式会社 輝度信号色信号分離フィルタ
US5533120A (en) * 1994-02-01 1996-07-02 Tandy Corporation Acoustic feedback cancellation for equalized amplifying systems
JP3149677B2 (ja) 1994-04-21 2001-03-26 松下電器産業株式会社 Ｙ／ｃ分離装置
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US5424784A (en) * 1994-09-06 1995-06-13 Raytheon Company Method and apparatus for cross fading between combed and simple filtered outputs
JPH09224260A (ja) 1996-02-19 1997-08-26 Matsushita Electric Ind Co Ltd Ｙ／ｃ分離装置
JPH1066102A (ja) * 1996-08-15 1998-03-06 Nec Corp Ｙ／ｃ分離回路
US5999954A (en) * 1997-02-28 1999-12-07 Massachusetts Institute Of Technology Low-power digital filtering utilizing adaptive approximate filtering
US6061100A (en) * 1997-09-30 2000-05-09 The University Of British Columbia Noise reduction for video signals

Also Published As

Publication number Publication date
KR100752258B1 (ko) 2007-08-29
BRPI0005538B1 (pt) 2016-11-29
CN1555201A (zh) 2004-12-15
EP1107612A2 (en) 2001-06-13
MXPA00011720A (es) 2002-07-09
EP1107612A3 (en) 2006-03-08
CN1319388C (zh) 2007-05-30
EP1107612B1 (en) 2010-11-17
JP4776070B2 (ja) 2011-09-21
CN1291607C (zh) 2006-12-20
DE60045237D1 (de) 2010-12-30
CN1301114A (zh) 2001-06-27
CN1770879A (zh) 2006-05-10
JP2001224041A (ja) 2001-08-17
CN100499828C (zh) 2009-06-10
US6384873B1 (en) 2002-05-07
KR20010062001A (ko) 2001-07-07

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 29/11/2016, OBSERVADAS AS CONDICOES LEGAIS.

B25D Requested change of name of applicant approved
B25G Requested change of headquarter approved
B25A Requested transfer of rights approved
B25A Requested transfer of rights approved
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 21A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2645 DE 14-09-2021 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.