Patent ID: 7487450

Claim:
A computer display system comprising a computer apparatus and a display device, wherein the computer apparatus includes: a play list control unit operable to execute application software or replay a video file, based on a play list held in a storage medium, the play list including descriptions of a video file name of a compressed video signal and a file name of the application software, as items to be replayed; a video decoding unit operable to decompress the compressed video signal and output a TV format video signal based on the replay of the video file performed by said play list control unit; a video output unit operable to output a computer format video signal based on the execution of the application software performed by said play list control unit; a detection unit operable to detect one of the following: an output instruction for the computer format video signal at a time when the application software is executed by said play list control unit; and an output instruction for the TV format video signal at a time when the replay of the compressed video signal is executed by said play list control unit; and a control signal output unit operable to: output a control signal for instructing the display device to switch to the TV format video signal if the output instruction for the TV format video signal has been detected as a result of the detection performed by the detection unit; and output a control signal for instructing the display device to switch to the computer format video signal if the output instruction for the computer format video signal has been detected as a result of the detection performed by the detection unit, and wherein the display device includes a video signal switching unit operable to perform, based on the control signal outputted from the computer apparatus, input switching, for display, between the TV format video signal and the computer format video signal.