Image display device and method of displaying image

An image display device comprising:

• a transmitter for outputting an image signal;
• a display controller;
• and a plurality of displays connected to said display controller and each allocated with a display number,
• wherein
• said transmitter executes processing of
• (A) outputting an image signal added with a display
• number,
• said display controller executes the processing of:
• (a) displaying an image based on the received image signal, to said display corresponding to the display number added to the received image signal;
• and
• (b) holding the displaying of the image displayed in said processing (a) until a new image signal is received,
• said transmitter further executes processing of
• (B) outputting only the image signal added with the display number corresponding to said display having the image to be changed thereon, and
• said display controller further executes processing of
• (c) updating, in the case of receiving the new image signal, only the image on said display corresponding to the display number added to the received image signal, to an image based on the received image signal so as to display the updated image.

A method of displaying an image, the method comprising steps of:

• (A) a transmitter outputting an image signal added with a line number;
• (a) a display controller displaying an image based on the image signal received from said transmitter, to a line on said display, said line being corresponding to the line number added to the received image signal;
• (b) said display controller holding the displaying of the image displayed in said step (a) until a new image signal is received;
• (B) said transmitter outputting only the image signal added with the line number corresponding to said line having the image to be changed thereon;
• and
• (c) said display controller updating, in the case of receiving the new image signal, only the image on said line corresponding to the line number added to the received image signal to the image based on the received image signal so as to display the updated image.

A method of displaying an image, the method comprising steps of:

• (A) a transmitter outputting an image signal added with a display number;
• (a) a display controller displaying an image based on the received image signal, to a display corresponding to the display number added to the received image signal, out of a plurality of displays;
• (b) said display controller holding the displaying of the image displayed in said step (a) until a new image signal is received;
• (B) said transmitter outputting only the image signal added with a display number corresponding to said display having the image to be changed thereon;
• and
• (c) said display controller updating, in the case of receiving the new image signal, only the image on said display corresponding to the display number added to the received image signal, to an image based on the received image signal so as to display the updated image.