Patent 7487450 was granted and assigned to Panasonic on February, 2009 by the United States Patent and Trademark Office.
A personal computer (101) includes a control signal output unit (104) that outputs, to a display device (113), a control signal for switching between a TV format video signal and a computer format video signal while the display device (113) includes an input switching unit (114) operable to perform, based on the control signal outputted from the personal computer (101), input switching, for display, between the TV format video signal and the computer format video signal.