Television receiver
AssigneeSony Corporation
InventorsKenzo Nakai, Yukihiko Yamamoto
Life of this patent
Estimating the term…
Abstract
A television receiver includes a picture-display-region discriminating means for discriminating whether or not any picture is displayed on a specific region on a screen of the television receiver, by utilizing a luminance signal of a composite video signal which is received by the television receiver and corresponds to the specific region. A signal in a frequency band which is unnecessary for the video signal is eliminated, and then it is discriminated whether or not any picture is displayed on the specific region, by utilizing the luminance signal and a carrier chrominance signal contained in the video signal.
Claims6
A television receiver comprising
- a picture display region discriminating means for discriminating whether or not there is any picture on a specific region on a screen of said television receiver by utilizing a luminance signal of a video signal corresponding to said specific region, wherein it is discriminated whether or not there is any picture, by utilizing the luminance signal and a carrier chrominance signal contained in said video signal.
A television receiver comprising a picture display region discriminating means for discriminating whether or not there is any picture on a specific region on a screen of said television receiver by utilizing a luminance signal and a carrier chrominance signal contained in said video signal corresponding to said specific region, wherein said luminance signal and said carrier chrominance signal are utilized for said discrimination after they are separated from a received video signal, added and amplified.
A television receiver comprising a picture display region discriminating means for discriminating whether or not there is any picture on a specific region on a screen of said television receiver by utilizing a luminance signal and a carrier chrominance signal contained in said video signal corresponding to said specific region, wherein said luminance signal and said carrier chrominance signal are utilized for said discrimination after they are separated from a received video signal, amplified independently and added.
Dependencies are inferred from the claim text.