Patent ID: 7586545
Filing Date: 2009-09-08
Classification: H04N

Abstract:
1. A display apparatus that displays OSD (On-Screen Display) information in a part of a screen on which video information is displayed, said display apparatus comprising: an OSD generation circuit that generates an OSD signal for displaying the OSD information; an OSD signal control circuit that changes the OSD signal according to video information displayed in a surrounding area of the OSD display; an OSD signal addition circuit that adds an OSD signal, which is converted by said OSD signal control circuit, to a video signal displayed on said display apparatus; and a blanking circuit that masks the video signal using an OSD superimposed area signal that is output by said OSD generation circuit to indicate a display effective period of the OSD information; wherein said OSD signal addition circuit adds up the video signal masked by the OSD superimposed area signal and the OSD signal converted by said OSD signal control circuit.