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 aumentoInfo
- 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
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.
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)
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)
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 |
-
1988
- 1988-08-04 US US07/228,274 patent/US4965661A/en not_active Expired - Lifetime
-
1989
- 1989-07-28 AT AT89909109T patent/ATE124191T1/de active
- 1989-07-28 WO PCT/US1989/003214 patent/WO1990001852A1/en active IP Right Grant
- 1989-07-28 DE DE68923178T patent/DE68923178T2/de not_active Expired - Fee Related
- 1989-07-28 EP EP89909109A patent/EP0434700B1/en not_active Expired - Lifetime
- 1989-07-28 AU AU40470/89A patent/AU626230B2/en not_active Ceased
- 1989-08-01 MX MX017004A patent/MX171009B/es unknown
- 1989-08-03 CA CA000607481A patent/CA1332638C/en not_active Expired - Fee Related
- 1989-08-04 CN CN89107039A patent/CN1021870C/zh not_active Expired - Fee Related
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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