Patent attributes
An image display system includes: a display device; and an information terminal, the display device having: a display control unit that generates a first display image having size adjustment regions added thereto, based on a video signal outputted by the information terminal; and an image transmitter that outputs the first display image generated by the display control unit to the information terminal; the information terminal having: a video output unit that outputs the video signal to the display device; a screen adjustment information acquisition unit that acquires screen adjustment information used by the display control unit to generate a display screen to be displayed on the display device, based on the first display image transmitted by the image transmitter; and an information transmitter that transmits the screen adjustment information acquired by the screen adjustment information acquisition unit to the display device, wherein the display control unit generates a second display image, based on the screen adjustment information transmitted by the information transmitter.