NO864572L - PROCEDURE AND DEVICE FOR COMPATIBLE DISPLAY OF WIDESCREEN AND NON-WIDESCREEN TELEVISION TRANSMISSIONS. - Google Patents

PROCEDURE AND DEVICE FOR COMPATIBLE DISPLAY OF WIDESCREEN AND NON-WIDESCREEN TELEVISION TRANSMISSIONS.

Info

Publication number
NO864572L
NO864572L NO864572A NO864572A NO864572L NO 864572 L NO864572 L NO 864572L NO 864572 A NO864572 A NO 864572A NO 864572 A NO864572 A NO 864572A NO 864572 L NO864572 L NO 864572L
Authority
NO
Norway
Prior art keywords
widescreen
signal
image
geometric distortion
television
Prior art date
Application number
NO864572A
Other languages
Norwegian (no)
Other versions
NO864572D0 (en
Inventor
Charles Rhodes
John Lowry
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
Priority claimed from US06/712,779 external-priority patent/US4651208A/en
Application filed by Scientific Atlanta filed Critical Scientific Atlanta
Publication of NO864572D0 publication Critical patent/NO864572D0/en
Publication of NO864572L publication Critical patent/NO864572L/en

Links

Abstract

Et widescreen-fjernsynssignal samples ned en høyere samplingstakt for å passe inn hele signalinformasjonen i den någjeldende, aktive videolinjetid på 52,5 >is. Et utvelgingssignal innlemmes også sammen med widescreen-billedsignalet, slik at ik.i^e-widescreen-f jernsynsmot- takere tillates å fremvise en sammen- hengende del av widescreen-bildet uten geometrisk forvrengning. Widescreen- fjernsynssignalet overføres enten i MAC- format eller widescreen-NTSC-format, og mottas av en dekoder. Dekoderen tillater hele widescreen-bildet å fremvises på en widescreen-mottaker, og gjør bruk av ut- velgingssignalet til å fremvise den utvalgte del av bildet på en normal mot- taker uten geometrisk forvrengning. I en annen utførelse tillater en dekoder fjernsynssignaler med det normale side- forhold å fretnvises på mottakere som har widescreen-sideforhold, uten geometrisk forvrengning.A widescreen television signal is sampled down a higher sampling rate to fit the entire signal information into the current active video line time of 52.5> ice. A selection signal is also incorporated with the widescreen image signal, so that non-widescreen television receivers are allowed to display a coherent portion of the widescreen image without geometric distortion. The widescreen television signal is transmitted either in MAC format or widescreen NTSC format and received by a decoder. The decoder allows the entire widescreen image to be displayed on a widescreen receiver, and uses the selection signal to display the selected portion of the image on a normal receiver without geometric distortion. In another embodiment, a decoder allows television signals with the normal aspect ratio to be displayed on receivers having widescreen aspect ratios, without geometric distortion.

NO864572A 1985-03-18 1986-11-17 PROCEDURE AND DEVICE FOR COMPATIBLE DISPLAY OF WIDESCREEN AND NON-WIDESCREEN TELEVISION TRANSMISSIONS. NO864572L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/712,779 US4651208A (en) 1985-03-18 1985-03-18 Compatibility of widescreen and non-widescreen television transmissions
PCT/US1986/000365 WO1986005644A1 (en) 1985-03-18 1986-02-21 Compatibility of widescreen and non-widescreen television transmissions

Publications (2)

Publication Number Publication Date
NO864572D0 NO864572D0 (en) 1986-11-17
NO864572L true NO864572L (en) 1987-01-16

Family

ID=26773430

Family Applications (1)

Application Number Title Priority Date Filing Date
NO864572A NO864572L (en) 1985-03-18 1986-11-17 PROCEDURE AND DEVICE FOR COMPATIBLE DISPLAY OF WIDESCREEN AND NON-WIDESCREEN TELEVISION TRANSMISSIONS.

Country Status (2)

Country Link
DK (1) DK548286A (en)
NO (1) NO864572L (en)

Also Published As

Publication number Publication date
DK548286D0 (en) 1986-11-17
NO864572D0 (en) 1986-11-17
DK548286A (en) 1987-01-14

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