ELECTRONIC WHITEBOARD
First Claim
1. An electronic whiteboard, comprising:
- a frame comprising inner sides;
an electronic paper stretched and connected to the inner sides of the frame;
a plurality of infrared emitters positioned on the inner sides of the frame;
a plurality of infrared receivers positioned on the inner sides of the frame; and
a driver in communication with the infrared receivers and the electronic paper;
wherein infrared light beams emitted from the infrared emitters interweave as a grid that is substantially parallel with and covers the electronic paper, each infrared receiver receives the infrared light beam from a respective one of the infrared emitters to detect if an object inserts into the grid and blocks the infrared light beam to detect positions and thus a trajectory of the object in the grid, and the controller drives the electronic paper to display a writing corresponding to the trajectory in shape and position.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic whiteboard includes a frame comprising inner sides, an electronic paper stretched and connected to the inner sides of the frame, a number of infrared emitters positioned on the inner sides of the frame, a number of infrared receivers positioned on the inner sides of the frame, and a driver in communication with the infrared receivers and the electronic paper. Infrared light beams emitted from the infrared emitters interweave as a grid that is substantially parallel with and covers the electronic paper. Each infrared receiver receives the infrared light beam from one of the infrared emitters to detect if an object is inserted into the grid and blocks the infrared light beam to detect positions and thus a trajectory of the object in the grid. The controller drives the electronic paper to display a writing corresponding to the trajectory in shape and position.
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Citations
9 Claims
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1. An electronic whiteboard, comprising:
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a frame comprising inner sides; an electronic paper stretched and connected to the inner sides of the frame; a plurality of infrared emitters positioned on the inner sides of the frame; a plurality of infrared receivers positioned on the inner sides of the frame; and a driver in communication with the infrared receivers and the electronic paper; wherein infrared light beams emitted from the infrared emitters interweave as a grid that is substantially parallel with and covers the electronic paper, each infrared receiver receives the infrared light beam from a respective one of the infrared emitters to detect if an object inserts into the grid and blocks the infrared light beam to detect positions and thus a trajectory of the object in the grid, and the controller drives the electronic paper to display a writing corresponding to the trajectory in shape and position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification