Patent ID: 7242370

Claim:
An image display apparatus, comprising: input/output means for transferring image data input from a first image display device having a display unit, wherein the first image display device is disposed at an upstream location to a second image display device; acquisition means for acquiring resolution information of the second image display device having a second display unit; generation means for generating resolution information on the basis of the resolution information acquired by the acquisition means and a resolution of the display unit; first storage means for storing the generated resolution information; direction detection means for determining a direction, wherein the direction is determined by assigning a value based upon detecting whether at least one image display device connected at a downstream location from the first image display device is arranged in a vertical or horizontal direction and, wherein the generation means generates the resolution information by cumulatively adding the resolution of the display unit with the resolution information acquired by the acquisition means in the direction determined by the direction detection means; detection means for detecting a location of a present image display device in a multidisplay device system; determination means for determining which part of the image data should be displayed by a present display unit of the present image display device on the basis of the location detected by the detection means; and display control means for displaying the part of the image data.