Patent ID: 8791877

Claim:
An image display system having a common screen area allowing a plurality of users to view a common image, comprising: a plurality of image supply devices each having an image display section, and an image transmission section adapted to generate a supply image using an image displayed in the image display section and to externally transmit the supply image; and an image display device capable of dividing the common screen area into one or more screen areas, and of displaying the supply image supplied from each of the plurality of image supply devices in the one or more screen areas of the common screen area, wherein: each of the plurality of image supply devices supplies a display image of the image display section to the image display device as the supply image, each of the plurality of image supply devices displays, in the image display section, a common screen area operating image to change a display layout of the common screen area, the common screen area operating image of at least one image supply device of the plurality of image supply devices includes: a first area that displays a plurality of identification images, each of the plurality of identification images identifying a separate one of the plurality of image supply devices, and a second area that is divided into plural areas to be correlated to the plurality of identification images, the positions of each of the supply images of the plurality of supply devices are changeable in the common screen area by an operation on the common screen area operating image of a single one of the plurality of image supply devices; and the image display device changes the display layout of the common screen area in accordance with the operation via the common screen area operating image of the single one of the plurality of image supply devices.