Patent ID: 6938212

Claim:
An information processing system comprising: a support server connected to a web server via a network; and a plurality of terminal devices for obtaining a web content from said web server through said support server, and for performing a cooperative operation by using said web content, wherein each of said terminal devices includes display means for displaying said web content obtained through said support server, information provision means for obtaining identification information for an object that is selected as a synchronization reference from among objects in said web content, and for transmitting said identification information to a different terminal device that performs said cooperative operation, and synchronization means for calculating the location of a predetermined object in said web content, based on identification information that is received from a different terminal device for said predetermined object to be used as a synchronization reference, and for changing the display screen employed for said web content based on said location of the predetermined object; wherein the information provision means is operative: (i) to periodically detect a marker object located nearest a center point of a display area in the web content; (ii) to compare the new marker object to a previously detected marker object; (iii) when the new marker object is different from the previously detected marker object, to obtain identification information corresponding to the new marker object; and (iv) to transmit the identification information corresponding to the new marker object to the different terminal device; and wherein the synchronization means is operative: (i) to receive the identification information corresponding to the new marker object; and (ii) to reposition the display area based on the identification information corresponding to the new marker object.