PURPOSE: To reduce data quantity to be transmitted by providing a distribution node with a computer graphics data working means, and in the case of changing a value of the displayed images while observing the graphics images displayed graphics image by a user after working graphics data by the distribution node and then distributing the worked data to respective destinations.
CONSTITUTION: While observing an image displayed on a display 11, a user performs an image selection command to a display image selecting part 12 in order to change the accuracy of the display image or the smoothness of time movement. The selecting part 12 transmits the inputted selection command information to a control part 8. The control part 8 prepares a selection command and transfers the command to a command transmitting part 13. The selection command transmitted by the transmitting part 13 is transmitted to a distribution node through a communication network. The change of preparation of the selection command can be automatically executed also by the control part 8 in addition to the user's command by the user from the user from the selecting part 12.
SUZUKI HAJIME
SUGAWARA SHOHEI
WATANABE KAZUFUMI
