MX171009B - Metodo y aparato para aumentar la definicion de una señal de ntsc, usando un canal de aumento - Google Patents

Metodo y aparato para aumentar la definicion de una señal de ntsc, usando un canal de aumento

Info

Publication number
MX171009B
MX171009B MX017004A MX1700489A MX171009B MX 171009 B MX171009 B MX 171009B MX 017004 A MX017004 A MX 017004A MX 1700489 A MX1700489 A MX 1700489A MX 171009 B MX171009 B MX 171009B
Authority
MX
Mexico
Prior art keywords
signal
increase
definition
line
ntsc video
Prior art date
Application number
MX017004A
Other languages
English (en)
Inventor
Keith Lucas
Original Assignee
Scientific Atlanta
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 Scientific Atlanta filed Critical Scientific Atlanta
Publication of MX171009B publication Critical patent/MX171009B/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/24—High-definition television systems
    • H04N11/26—High-definition television systems involving two-channel transmission

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)
  • Color Television Systems (AREA)

Abstract

La presente invención se refiere a un método en un transmisor para aumentar la definición de una señal de video de NTSC usando un canal de aumento separado, el canal de aumento consiste de una porción de señal de diferencia de línea para mejorar la definición vertical, el método está caracterizado por los pasos de: generando una señal de suma de línea, derivar una señal de detalle horizontal de la señal de suma de línea, filtrar la señal de detalle horizontal para proporcionar una porción de definición horizontal de la señal de canal de línea, y transmitir las porciones de definición horizontal y vertical del canal de aumento para aumentar la definición de la señal de video de NTSC.
MX017004A 1988-08-04 1989-08-01 Metodo y aparato para aumentar la definicion de una señal de ntsc, usando un canal de aumento MX171009B (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/228,274 US4965661A (en) 1988-08-04 1988-08-04 Method and apparatus for increasing the definiton of an NTSC video signal using an augmentation channel

Publications (1)

Publication Number Publication Date
MX171009B true MX171009B (es) 1993-09-24

Family

ID=22856491

Family Applications (1)

Application Number Title Priority Date Filing Date
MX017004A MX171009B (es) 1988-08-04 1989-08-01 Metodo y aparato para aumentar la definicion de una señal de ntsc, usando un canal de aumento

Country Status (9)

Country Link
US (1) US4965661A (es)
EP (1) EP0434700B1 (es)
CN (1) CN1021870C (es)
AT (1) ATE124191T1 (es)
AU (1) AU626230B2 (es)
CA (1) CA1332638C (es)
DE (1) DE68923178T2 (es)
MX (1) MX171009B (es)
WO (1) WO1990001852A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5159453A (en) * 1990-09-07 1992-10-27 New York Institute Of Technology Video processing method and apparatus
DE69129020D1 (de) * 1990-03-30 1998-04-09 New York Inst Techn Verfahren und vorrichtung zur videoverarbeitung
US5128791A (en) * 1990-08-13 1992-07-07 Bell Communications Research, Inc. Multi-channel HDTV system
US5900915A (en) * 1997-03-18 1999-05-04 Thomson Consumer Electronics, Inc. HD to SD guide converter for electronic television schedule system

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53139925A (en) * 1977-05-13 1978-12-06 Hitachi Ltd Receiving method for video signal
GB2047041B (en) * 1979-03-22 1983-06-15 Micro Consultants Ltd Digital still picture storage system
DE2938349C2 (de) * 1979-09-21 1983-05-26 Aeg-Telefunken Ag, 1000 Berlin Und 6000 Frankfurt Schaltungsanordnung zur kompatiblen Auflösungserhöhung bei Fernsehsystemen
US4323916A (en) * 1980-02-07 1982-04-06 Rca Corporation Data rate reduction for digital video signals by subsampling and adaptive reconstruction
US4449143A (en) * 1981-10-26 1984-05-15 Rca Corporation Transcodeable vertically scanned high-definition television system
US4551753A (en) * 1981-12-17 1985-11-05 Nippon Hoso Kyokai Picture signal processing system including spatio-temporal filter
EP0102965B1 (en) * 1982-01-29 1986-09-17 Independent Broadcasting Authority A filter for extending the difinition of a television signal in component form
JPS58137377A (ja) * 1982-02-09 1983-08-15 Victor Co Of Japan Ltd デイジタルビデオ信号伝送装置
DE3211323C2 (de) * 1982-03-27 1984-02-09 Standard Elektrik Lorenz Ag, 7000 Stuttgart System zur redundanzvermindernden digitalen Übertragung von Fernsehbildsignalen
GB2122836A (en) * 1982-06-11 1984-01-18 Philips Electronic Associated Television transmission system
US4521803A (en) * 1982-10-07 1985-06-04 General Electric Company System for compatible transmission of high-resolution TV
GB2132846A (en) * 1982-12-22 1984-07-11 Philips Electronic Associated Television transmission system
GB2132443A (en) * 1982-12-22 1984-07-04 Philips Electronic Associated Television transmission system
US4665427A (en) * 1983-03-14 1987-05-12 U.S. Philips Corporation Method and apparatus for converting C-MAC television signals for transmission over a limited bandwidth medium
JPS59201594A (ja) * 1983-04-22 1984-11-15 Victor Co Of Japan Ltd デイジタルビデオ信号再生装置
US4558347A (en) * 1983-08-26 1985-12-10 Rca Corporation Progressive scan television system employing vertical detail enhancement
US4605950A (en) * 1983-09-20 1986-08-12 Cbs Inc. Two channel compatible high definition television broadcast system
DE3341393C2 (de) * 1983-11-15 1986-03-06 Institut für Rundfunktechnik GmbH, 8000 München Verfahren zum Übertragen eines Fernsehsignals höherer Auflösung
NL192488C (nl) * 1983-12-05 1997-08-04 Philips Electronics Nv Informatiegever en informatie-ontvanger met overdracht van extra informatie behorend bij de televisie-rasteraftastinrichting.
US4630099A (en) * 1984-01-16 1986-12-16 At&T Bell Laboratories Time multiplexing chrominance information for compatible high-definition television
US4622577A (en) * 1984-02-03 1986-11-11 Rca Corporation Decoder for extracting a 4:3 aspect ratio signal from a high definition television signal
US4564857A (en) * 1984-02-28 1986-01-14 At&T Bell Laboratories Aspect ratio improvement for compatible high-definition television
US4535352A (en) * 1984-04-16 1985-08-13 At&T Bell Laboratories Technique for generating semi-compatible high definition television signals for transmission over two cable TV channels
US4631574A (en) * 1984-06-29 1986-12-23 At&T Bell Laboratories Compatible high-definition television with extended aspect ratio
DE3435265A1 (de) * 1984-09-26 1986-04-03 ANT Nachrichtentechnik GmbH, 7150 Backnang Verfahren zur aufloesungserhoehung fuer ein kompatibles fernsehsystem
US4603350A (en) * 1984-12-21 1986-07-29 Rca Corporation Interlaced digital video input filter/decimator and/or expander/interpolator filter
US4672424A (en) * 1985-02-14 1987-06-09 Rca Corporation Progressively scanned television system with reduced chrominance bandwidth
US4651208A (en) * 1985-03-18 1987-03-17 Scientific Atlanta, Inc. Compatibility of widescreen and non-widescreen television transmissions
US4665436A (en) * 1985-12-20 1987-05-12 Osborne Joseph A Narrow bandwidth signal transmission
US4661850A (en) * 1986-01-31 1987-04-28 Rca Corporation Progressive scan television system with interlaced inter-field sum and difference components
US4694338A (en) * 1986-04-25 1987-09-15 North American Philips Corporation High-definition television transmission system
US4698675A (en) * 1986-09-29 1987-10-06 Rca Corporation Progressive scan display system having intra-field and inter-field processing modes
CA1309162C (en) * 1987-09-14 1992-10-20 General Electric Company Television signal encoded with auxiliary vertical-temporal information
AU618291B2 (en) * 1987-09-14 1991-12-19 General Electric Company Television signal encoded with auxiliary vertical-temporal information

Also Published As

Publication number Publication date
CN1021870C (zh) 1993-08-18
WO1990001852A1 (en) 1990-02-22
EP0434700A1 (en) 1991-07-03
CA1332638C (en) 1994-10-18
US4965661A (en) 1990-10-23
ATE124191T1 (de) 1995-07-15
EP0434700B1 (en) 1995-06-21
DE68923178T2 (de) 1995-10-26
DE68923178D1 (de) 1995-07-27
EP0434700A4 (en) 1991-12-04
AU4047089A (en) 1990-03-05
CN1042284A (zh) 1990-05-16
AU626230B2 (en) 1992-07-23

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