Patent ID: 7046302

Claim:
A picture processing apparatus configured to process and combine a plurality of input video signals from a plurality of sources on a display, comprising: an input selecting section configured to select the plurality of input video signals of the plurality of sources to be displayed; a determining section operative to identify whether or not an input video signal is a signal of which a non-picture portion is added to the periphery of an effective picture area, the determining section having: an ID detecting portion configured to detect a picture format of the plurality of input video signals of the plurality of sources based on a picture format of an input video signal, an additional information detecting portion configured to detecting additional information superimposed with the plurality of video signals of the plurality of sources, a non-signal detecting portion configured to compare an overall level of each of the plurality of input video signals of the plurality of sources with a predetermined level; and a picture processor responsive to the determining section and configured to extract a signal of the effective picture area, adjust the size of the effective picture area, and combine an extracted signal on the display when a determined result of the determining section represents that an input video signal is a signal of which a non-picture portion is added to the periphery of the effective picture area.