| 摘要 |
PURPOSE:To efficiently progress a conference by executing periodically a check so that a display of all conference terminals used for the conference is executed unitarily and explaining data under discussion while displaying it commonly on each display. CONSTITUTION:In plural conference terminals 19 connected mutually through an ISDN network, a conference terminal equipment 19-1 which obtains a token executes polling so as to transmit periodically picture information displayed on a display of other each conference terminal 19, and transmitted picture information and picture information displayed on the display of the conference terminal equipment 19-1 are compared. Also, this system is constituted so that in the case there is a difference, a change of a display is executed by transmitting a display image on the conference terminal equipment 19-1 side to the other party conference terminal equipment 19 which executes polling, and the display of all the conference terminals under operation is unified. |
