DE3585354D1 - Adaptives filtersystem. - Google Patents

Adaptives filtersystem.

Info

Publication number
DE3585354D1
DE3585354D1 DE8585306872T DE3585354T DE3585354D1 DE 3585354 D1 DE3585354 D1 DE 3585354D1 DE 8585306872 T DE8585306872 T DE 8585306872T DE 3585354 T DE3585354 T DE 3585354T DE 3585354 D1 DE3585354 D1 DE 3585354D1
Authority
DE
Germany
Prior art keywords
signal
amplitude
vertical detail
low
chrominance
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 - Fee Related
Application number
DE8585306872T
Other languages
English (en)
Inventor
Leopold Albert Harwood
Robert Andrew Wargo
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.)
RCA Licensing Corp
Original Assignee
RCA Licensing Corp
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 RCA Licensing Corp filed Critical RCA Licensing Corp
Application granted granted Critical
Publication of DE3585354D1 publication Critical patent/DE3585354D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H19/00—Networks using time-varying elements, e.g. N-path filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters
DE8585306872T 1984-10-04 1985-09-27 Adaptives filtersystem. Expired - Fee Related DE3585354D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/657,592 US4626894A (en) 1984-10-04 1984-10-04 Signal filtering system having adaptively cascaded filter stages for developing a variable bandwidth frequency characteristic

Publications (1)

Publication Number Publication Date
DE3585354D1 true DE3585354D1 (de) 1992-03-19

Family

ID=24637853

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585306872T Expired - Fee Related DE3585354D1 (de) 1984-10-04 1985-09-27 Adaptives filtersystem.

Country Status (11)

Country Link
US (1) US4626894A (de)
EP (1) EP0177285B1 (de)
JP (1) JPH07105962B2 (de)
KR (1) KR940011030B1 (de)
CN (1) CN1004393B (de)
AT (1) ATE72502T1 (de)
AU (1) AU573037B2 (de)
CA (1) CA1228669A (de)
DD (1) DD238144A5 (de)
DE (1) DE3585354D1 (de)
ES (1) ES8705179A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686561A (en) * 1985-07-31 1987-08-11 Rca Corporation Vertical detail information restoration circuit
US4827528A (en) * 1985-11-15 1989-05-02 Stanford University Error-minimizing noise-reduction system
US4916526A (en) * 1986-01-31 1990-04-10 Yves C. Faroudja Bandwidth control for chrominance and luminance paths in quadrature modulated color television system
JPS62245894A (ja) * 1986-04-18 1987-10-27 Sony Corp 映像信号分離装置
US4703340A (en) * 1986-05-02 1987-10-27 Rca Corporation Frequency division multiplexed analog to digital converter
US4847682A (en) * 1987-12-18 1989-07-11 North American Philips Corporation Adaptive comb filter for artifact-free decoding
JP2558922B2 (ja) * 1990-05-15 1996-11-27 三菱電機株式会社 Ｙ／ｃ分離装置
KR930008184B1 (ko) * 1990-06-30 1993-08-26 삼성전자 주식회사 휘도/색신호 분리 회로
US6781521B1 (en) * 2001-08-06 2004-08-24 Halliburton Energy Services, Inc. Filters for canceling multiple noise sources in borehole electromagnetic telemetry system
US6657597B2 (en) * 2001-08-06 2003-12-02 Halliburton Energy Services, Inc. Directional signal and noise sensors for borehole electromagnetic telemetry system
US7218737B1 (en) * 2002-08-21 2007-05-15 Silicon Image, Inc. System and method for an adaptive state machine to control signal filtering in a serial link
US7272375B2 (en) 2004-06-30 2007-09-18 Silicon Laboratories Inc. Integrated low-IF terrestrial audio broadcast receiver and associated method
GB2426881B (en) * 2005-06-01 2010-12-29 Snell & Wilcox Ltd Method and apparatus for spatial interpolation of colour images
CN103067014A (zh) * 2012-12-25 2013-04-24 上海贝岭股份有限公司 用于谐波检测的频率跟随数据采集电路
WO2015100522A1 (en) * 2013-12-30 2015-07-09 Mediatek Singapore Pte. Ltd. Methods for inter-component residual prediction

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242259A (en) * 1961-03-31 1966-03-22 Philco Corp System to minimize desaturation and reduce noise in color tv picture by subtracting from luminance signal a d. c. signal derived from chrominance signal via a forward biased unilaterally conductive device
US4143397A (en) * 1976-04-19 1979-03-06 Rca Corporation Comb filter apparatus
US4097897A (en) * 1977-04-22 1978-06-27 General Electric Company Automatic boost control in an aperture corrector for TV video signals
US4149181A (en) * 1977-09-02 1979-04-10 Gte Sylvania Incorporated Signal-dependent chrominance subcarrier filtering circuit
US4167021A (en) * 1977-12-12 1979-09-04 Rca Corporation Suppression of chrominance signal contamination of the luminance signal in a video signal processing system
DE2810697A1 (de) * 1978-03-11 1979-09-20 Bosch Gmbh Robert Verfahren zur trennung des farbartsignals vom leuchtdichtesignal bei farbfernsehsignalen mit quadraturmodulierten farbhilfstraegern
NL7803910A (nl) * 1978-04-13 1979-10-16 Philips Nv Kamfilterschakeling.
JPS54139333A (en) * 1978-04-20 1979-10-29 Hitachi Ltd Color television receiver
JPS54149515A (en) * 1978-05-17 1979-11-22 Nec Corp Separator circuit for luminance signal and chromaticity signal
JPS5510228A (en) * 1978-07-05 1980-01-24 Nec Corp S/n improving unit for television video signal
US4328465A (en) * 1978-09-26 1982-05-04 Pioneer Electronic Corporation Tone control circuit utilizing variable gain amplifier
IT1118625B (it) * 1979-05-11 1986-03-03 Cselt Centro Studi Lab Telecom Perfezionamenti agli equializzatori per trasmissione di segnali numeri ci
US4245238A (en) * 1979-05-11 1981-01-13 Rca Corporation Non-linear processing of video image vertical detail information
JPS5652441A (en) * 1979-10-05 1981-05-11 Pioneer Electronic Corp Programmable bit shift circuit
JPS5760791A (en) * 1980-09-30 1982-04-12 Toshiba Corp Demodulating circuit for wide-band receiving chrominance
US4415918A (en) * 1981-08-31 1983-11-15 Rca Corporation Digital color television signal demodulator
US4524423A (en) * 1981-11-06 1985-06-18 Rca Corporation Digital signal separation filters
GB2110044A (en) * 1981-11-06 1983-06-08 Rca Corp Digital signal separation network and television receiver including such a network
US4443817A (en) * 1981-11-25 1984-04-17 Faroudja Y C Chroma noise reduction system for quadrature modulated color television picture signals
JPS58123292A (ja) * 1982-01-19 1983-07-22 Pioneer Electronic Corp 色ノイズ抑制回路
GB2127250B (en) * 1982-09-20 1986-04-09 British Broadcasting Corp Colour video signal processing
JPS58129892A (ja) * 1983-01-28 1983-08-03 Hitachi Ltd 輝度・色信号分離回路

Also Published As

Publication number Publication date
CA1228669A (en) 1987-10-27
AU573037B2 (en) 1988-05-26
KR860003705A (ko) 1986-05-28
ES547387A0 (es) 1987-04-16
EP0177285B1 (de) 1992-02-05
EP0177285A2 (de) 1986-04-09
DD238144A5 (de) 1986-08-06
JPH07105962B2 (ja) 1995-11-13
EP0177285A3 (en) 1988-03-23
ES8705179A1 (es) 1987-04-16
US4626894A (en) 1986-12-02
AU4794385A (en) 1986-04-10
JPS6190594A (ja) 1986-05-08
ATE72502T1 (de) 1992-02-15
KR940011030B1 (ko) 1994-11-22
CN1004393B (zh) 1989-05-31
CN85107193A (zh) 1986-07-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee