Patent ID: 8775680

Claim:
An image display system comprising: a first image display including a first communication portion for transmitting/receiving image data, a first display portion for displaying image data as a first display image and a first control portion; and a second image display including a second communication portion for transmitting/receiving image data to/from said first communication portion of said first image display, a second display portion for displaying image data as a second display image and a second control portion, wherein said second control portion of said second image display is so formed as to transmit first image data not displayed on said first display portion of said first image display but displayed on said second display portion of said second image display to said first communication portion of said first image display while receiving second image data not displayed on said second display portion of said second image display but displayed on said first display portion of said first image display from said first communication portion of said first image display and displaying said second image data on said second display portion of said second image display when communicating with said first image display, and said first control portion of said first image display is so formed as to transmit said second image data to said second communication portion of said second image display while receiving said first image data from said second communication portion of said second image display and displaying said first image data on said first display portion of said first image display when communicating with said second image display, so that said first control portion and said second control portion can make said first display image and said second display image to be a same display image as each other.