Patent ID: 7743135

Claim:
A display-screen-sharing system, which comprises one or more transmission-side terminals, one or more reception-side terminals as well as a network for connecting said transmission-side terminals to said reception-side terminals and allows display-screen data of said transmission-side terminals to be shared by said reception-side terminals, wherein: each of said transmission-side terminals comprises: a search execution unit for carrying out a search process on a search-object area on a display screen to detect an updated area of said display when a search flag is set, wherein when the search flag is in an ON state the search execution unit is placed into an executable state, wherein when the search flag is in an OFF state the search execution unit is placed into a waiting state, and wherein the updated area includes updated information caused by an updating event, which includes an operation carried out by a user at the transmission-side terminals and activation of multiple kinds of software; a transmission-side transmission/reception unit for encoding at least display-screen data of said updated area and for transmitting at least the encoded display-screen data of said updated area to said reception-side terminals; and a search-process control unit for putting said search process in a state of being unexecutable by said search execution unit in accordance with completion of transmission of said display-screen data; every individual one of said reception-side terminals has a reception-side transmission/reception unit for receiving said display-screen data from any of said transmission-side terminals and transmitting a ready-for-reception signal to any of said transmission-side terminals transmitting said display-screen data as a signal indicating that said individual reception-side terminal has already entered a state of being ready to receive further display-screen data; said transmission-side transmission/reception unit receives said ready-for-reception signal; and said search-process control unit puts said search process in a state of being executable by said search execution unit in accordance with completion of reception of said ready-for-reception signal.