Patent ID: 8823716

Claim:
A display device comprising: a display section configured to display an image comprising a plurality of input images from different input sources; a display control section configured to arrange a plurality of display areas in a display range of the display section and display an input image of the plurality of input images from the different input sources in each of the display areas; a source selection section configured to select, from a plurality of input sources, the input sources of the input images to be displayed in the display areas, the plurality of input sources including two or more input sources of a same type connected to the display device; and a multi-screen display control section configured to: display, on the display section, a source designation panel adapted to designate the input sources of the input images out of the plurality of input sources, determine the input sources of the input images to be displayed in all of the display areas if the input sources of the input images to be displayed in all of the display areas are designated by an operation during display of the source designation panel, perform, if any of the two or more input sources is designated by the operation during the display of the source designation panel, at least one of: change the source designation panel so as to prevent another of the two or more input sources from being designated, and display a warning if an operation of designation the another of the two or more input sources is operated, and make the source selection section select the input sources determined.