Patent ID: 7250982

Claim:
A device for processing a PIP (picture in picture) in a TV comprising: a first video processing part for receiving, and processing a main picture video signal into a signal displayable on a screen; a second video processing part for receiving, and processing a sub picture video signal into a signal displayable on a region of the screen; a control part for providing a control signal according to a user's command; an adjusting part for adjusting a presenting ratio of a video signal from the second video processing part, wherein a given number of bits of the video signal from the second video processing part are selected and presented in order of significance level thereof; and a switching part for superimposing the video signal from the first video processing part and the video signal from the adjusting part according to the control signal from the control part, by adding bits of the video signal from the first video processing part in reverse order of significance level thereof with the video signal bits presented from the adjusting part.