Multipicture video signal display apparatus with modified picture indication

摘要

A video signal apparatus allows multiple pictures to be displayed. A plurality of input video signals are processed to produce a plurality of signals corresponding to a respective plurality of pictures. The plurality of pictures corresponding to the plurality of signals are displayed. At least one of the plurality of pictures which have been displayed is selected. First and second modifications are made to the selected picture. The first modification to the selected picture indicates that the selected picture is being provided with the second modification.