Patent ID: 8160419

Claim:
An optical disk device, comprising: read means which reads an image signal from an optical disk; conversion means which converts the image signal read by the read means to one resolution among a first plurality of resolutions; a bidirectional type interface which is connected to a display device which processes the image signal converted by the conversion means, and which displays an image upon a screen; actuation means which receives input of one resolution among the first plurality of resolutions; and control means which: acquires Extended Display Identification Data (EDID) of the display device from the display device via the interface; and acquires information, from the EDID, about a second plurality of resolutions with which the display device is compatible, wherein the control means: when the actuation means inputs one resolution, decides whether or not the input resolution is included in the second plurality of resolutions which have been acquired; when deciding that the input resolution is included in the second plurality of resolutions, designates the input resolution to the conversion means, and when deciding that the input resolution is not included in the second plurality of resolutions, designates the highest resolution among the second plurality of resolutions to the conversion means.