G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 15/16 (2006.01) G06F 3/14 (2006.01) G06F 13/38 (2006.01) G06F 17/24 (2006.01) H04M 11/08 (2006.01)
Patent
CA 2071951
Each terminal (30, 60) in a full-duplex communication system comprises a computer-controlled display screen such as a CRT (62, 32), at least one input means such as a keyboard (64, 34), a mouse (36, 66) or a light pen (38, 68) and bidirectional communication means (40, 70) through which the terminals (30, 60) are interconnected. Each communication means comprises a receiver (78, 48) for receiving display information received at the terminal from the remote terminal(s) and a transmitter (46, 76) for transmitting information to the remote terminal(s) where it is displayed. In accordance with the invention, each terminal also comprises control (50, 180) which periodically reads its input means and communications means and uses the information contained therein to control the content of its display. Further, the control means at each terminal also provides to its transmitter instructions (figure 3) which are transmitted to the remote terminal to change the display at the remote terminal so that all the displays are the same. As a result of this arrangement, changes in the display that are made at the same time by the user at the local terminal and by the user at the remote terminal are entered on the display screens at both terminals at substantially the same time so far as is discernable by the users. As a result, not only can each user interact with the display but it is also possible for each user to interact with the other users through the display without having to wait for one user to complete his entry of information as in the prior art. As a result, truly interactive communication is possible through the display.
Options Unlimited Research Corp.
Osler Hoskin & Harcourt Llp
Tanenbaum Richard
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