Patent ID: 7834934

Claim:
A video signal output device, comprising: a video signal conversion circuit that converts an inputted video signal into an interlaced video signal or a progressive video signal; a video output circuit that outputs the video signal converted by the video signal conversion circuit to a display device; and a control portion, wherein the video output circuit outputs to the control portion a connection presence/absence indicating signal for judging whether or not a predetermined video input terminal of the display device is connected to a predetermined video output terminal, and the control portion includes interlacing/progressive selection screen display means that, when interlacing/progressive setting and aspect ratio setting are performed through a dialog to suit television screen setting of the display device, causes the display device to display an interlacing/progressive selection screen if a television screen setting completion flag indicating completion of the television screen setting is not set, and it is judged that the predetermined video input terminal of the display device is connected to the predetermined video output terminal, aspect ratio setting screen display means that, after interlacing/progressive setting is completed by means of the interlacing/progressive selection screen, or if it is judged that the predetermined video input terminal of the display device is not connected to the predetermined video output terminal, causes the display device to display an aspect ratio setting screen for setting an aspect ratio for the display device, and flag setting means that sets the television screen setting completion flag when the aspect ratio is set by means of the aspect ratio setting screen and thus the television screen setting is completed.