Patent ID: 7519664

Claim:
A presentation supporting device, comprising: communication means for establishing a link between several terminals and for exchanging data between terminals to which said link is established; image storage means for temporarily storing image data representing an image to be projected on a screen; terminal information storage means for storing a terminal identifier, used to identify said terminal in relation with an order to allow the occupation of said screen; projection means for reading image data stored in said image storing means and projecting an image indicated by read image data on said screen; terminal registration means for acquiring a terminal identifier from a terminal via said communication means each time a link is established between said terminal, and for storing an acquired terminal identifier in said terminal information storage means; order input means for inputting an order to be given to each terminal; order-setting means for correlating said input order with each terminal identifier stored in said terminal information storage means; utilization request acquiring means for acquiring from a terminal that established said link a screen utilization request including a terminal identifier of the terminal and image data via said communication means; and projection permission determination means for determining whether a terminal identifier included in said acquired screen utilization request and a terminal identifier correlated with the first order by said terminal information storage means are in agreement; and in a case that the identifiers are in agreement, said projection permission determination means stores in said image storage means, image data included in said screen utilization request.