Patent ID: 8443116

Claim:
An information processing system comprising: a first information processing unit of a plurality of information processing units; and a second information processing unit of the plurality of information processing units that is connected to the first information processing unit so as to be communicable therewith, wherein the first information processing unit includes: a first display unit detection unit that is configured to detect whether a projector is connected to the first information processing unit; a first transmission unit that is configured to transmit, to the plurality of information processing units, a fact that the projector is connected, when the first display unit detection unit detects that the projector is connected; and a control unit that is configured to control display of information transmitted from the second information processing unit of the plurality of information processing units on the projector, and wherein the second information processing unit includes: a second display unit detection unit that is configured to detect whether or not the projector is directly connected to the second information processing unit; and a second transmission unit that is configured to transmit, to the first information processing unit to which the projector is connected, the information to be displayed on the projector when the second display unit detection unit detects that the projector is not currently connected to the second information processing unit, wherein the information transmitted from the second information processing unit includes a transmission destination ID, transmission source ID and display content data which includes coordinates and dimensions of a window to be displayed by the projector and display content of the window.