Method for erasing on an electronic writeboard
First Claim
Patent Images
1. A method for erasing writing on an electronic writeboard comprising the steps of:
- describing an eraser as a mask;
monitoring movement of said eraser over said electronic writeboard;
detecting overlap between said mask and writing on said electronic writeboard and erasing writing within said mask; and
adjusting the shape of said mask to compensate for the speed at which said eraser is moved over said electronic writeboard.
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Abstract
A method for erasing writing on an electronic writeboard includes the steps of describing an eraser as a mask and monitoring movement of the eraser over the electronic writeboard. When the mask overlaps with writing on the electronic writeboard, erasing of the writing within the mask is performed. The shape of the mask is adjusted to compensate for the speed at which the eraser is moved over the electronic writeboard.
46 Citations
17 Claims
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1. A method for erasing writing on an electronic writeboard comprising the steps of:
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describing an eraser as a mask;
monitoring movement of said eraser over said electronic writeboard;
detecting overlap between said mask and writing on said electronic writeboard and erasing writing within said mask; and
adjusting the shape of said mask to compensate for the speed at which said eraser is moved over said electronic writeboard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An editor for erasing writing on an electronic writeboard comprising:
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means for describing an eraser as a mask;
means for monitoring movement of said eraser over said electronic writeboard;
means for detecting overlap between said mask and writing on said electronic writeboard and erasing writing within said mask; and
means for adjusting the shape of said mask to compensate for the speed at which said eraser is moved over said electronic writeboard.
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10. An interactive display system comprising:
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a touch sensitive panel responsive to user contact in the form of writing and erasing and generating signals representing the location of writing and erasing thereon;
a projector to project images on said touch sensitive panel reflecting the writing and erasing on said touch sensitive panel; and
a computer executing an applications program, said applications program being responsive to writing signals to create objects representing writing on said touch sensitive panel and providing updated image output to said projector to reflect said writing, said applications program also being responsive to erasing signals and including means for describing an eraser as a mask;
means for monitoring movement of the eraser over said touch sensitive panel;
means for detecting overlap between the mask and writing on said touch sensitive panel and erasing writing within said mask; and
means for adjusting the shape of said mask to compensate for the speed at which said eraser is moved over said touch sensitive panel, said applications program providing updated image output to said projector to reflect erasing of writing on said touch sensitive panel.- View Dependent Claims (11, 12, 13, 14, 15)
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16. A computer readable medium including computer program code for erasing writing on an electronic writeboard, said computer readable medium comprising:
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computer program code for describing an eraser as a mask;
computer program code for monitoring movement of said eraser over said electronic writeboard;
computer program code for detecting overlap between said mask and writing on said electronic writeboard and erasing writing within said mask; and
computer program code for adjusting the shape of the mask to compensate for the speed at which said eraser is moved over said electronic writeboard. - View Dependent Claims (17)
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Specification