Picture communication apparatus
First Claim
1. In a two-way communication system including first and second communication terminals, telephone means at each terminal for two-way telephone service and picture communication means at each terminal for providing users with visual images of each other, each said picture communication means comprising:
- camera means for generating video signals to be transmitted;
display means for displaying the visual images;
control means for controlling transmission and reception of said video signals; and
line drawing input means for generating a line drawing signal representing a line drawing and which includes tablet means adapted to have said line drawing drawn thereon by the respective user, coordinates data detecting means for detecting absolute coordinates data in parallel form, coordinates converting means for converting said absolute coordinates data detected by said coordinates data detecting means to relative coordinates data, and parallel-to-serial converting means for outputting the relative coordinates data in serial form to said control means so as to be suitable for transmission with said video signals from said control means.
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Accused Products
Abstract
In a two-way communication system having first and second communication terminals, a telephone apparatus at each terminal for two-way telephone service and a picture communication apparatus at each terminal for providing users with visual images of each other; the picture communication apparatus includes video cameras for generating video signals to be transmitted, display apparatus for displaying the visual images, a control apparatus for controlling transmission and reception of the video signals, and a line drawing input apparatus connected to the control apparatus for generating a line signal representing the line drawing and which is transmitted with the video signals from the control apparatus.
125 Citations
6 Claims
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1. In a two-way communication system including first and second communication terminals, telephone means at each terminal for two-way telephone service and picture communication means at each terminal for providing users with visual images of each other, each said picture communication means comprising:
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camera means for generating video signals to be transmitted; display means for displaying the visual images; control means for controlling transmission and reception of said video signals; and line drawing input means for generating a line drawing signal representing a line drawing and which includes tablet means adapted to have said line drawing drawn thereon by the respective user, coordinates data detecting means for detecting absolute coordinates data in parallel form, coordinates converting means for converting said absolute coordinates data detected by said coordinates data detecting means to relative coordinates data, and parallel-to-serial converting means for outputting the relative coordinates data in serial form to said control means so as to be suitable for transmission with said video signals from said control means. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification