Touch control apparatus and touch point detection method
First Claim
1. A touch control apparatus, comprising:
- a touch pad, receiving contact from at least one object;
a first edge, a second edge, a third edge and fourth edge forming a rectangle that encircles the touch pad, wherein the first edge is opposite to the second edge, the third edge is opposite to the fourth edge, and the first edge, the second edge, and the third edge are surfaced with geometric textures;
a first camera, deposited on a corner of the first edge and the fourth edge of the rectangle, having a field of view sufficient to collect a first image including the second edge and third edge;
a second camera, deposited on a corner of the second edge and the fourth edge of the rectangle, having a field of view sufficient to collect a second image including the first edge and third edge; and
a calculation unit, coupled to the first camera and second camera, performing a characteristic extraction process on the geometric textures of the first and second images to determine whether an object has touched the touch pad, and if so, coordinates thereof are determined, wherein when an object touches the touch pad on a touch point;
the first camera captures images of the second edge, third edge and the touch point to form the first image;
the second camera captures images of the second edge, third edge and the touch point to form the second image; and
the first and second images are one dimensional line images.
1 Assignment
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Accused Products
Abstract
A touch control apparatus, having a touch pad receiving contact from at least one object is provided. Four edges form a rectangle that encircles the touch pad. All the edges are surfaced with geometric textures. A first camera is deposited on a corner of the first edge and the fourth edge of the rectangle, having a field of view sufficient to collect a first image including the second edge and third edge of the rectangle. A second camera is deposited on a corner of the second edge and the fourth edge of the rectangle, having a field of view sufficient to collect a second image including the first edge and third edge of the rectangle. A calculation unit performs a characteristic extraction process on the geometric textures of the first and second images to determine whether an object has touched the touch pad, and if so, coordinates thereof are determined.
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Citations
15 Claims
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1. A touch control apparatus, comprising:
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a touch pad, receiving contact from at least one object; a first edge, a second edge, a third edge and fourth edge forming a rectangle that encircles the touch pad, wherein the first edge is opposite to the second edge, the third edge is opposite to the fourth edge, and the first edge, the second edge, and the third edge are surfaced with geometric textures; a first camera, deposited on a corner of the first edge and the fourth edge of the rectangle, having a field of view sufficient to collect a first image including the second edge and third edge; a second camera, deposited on a corner of the second edge and the fourth edge of the rectangle, having a field of view sufficient to collect a second image including the first edge and third edge; and a calculation unit, coupled to the first camera and second camera, performing a characteristic extraction process on the geometric textures of the first and second images to determine whether an object has touched the touch pad, and if so, coordinates thereof are determined, wherein when an object touches the touch pad on a touch point; the first camera captures images of the second edge, third edge and the touch point to form the first image; the second camera captures images of the second edge, third edge and the touch point to form the second image; and the first and second images are one dimensional line images. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A touch point detection method, comprising:
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providing a touch pad for receiving contact from at least one object; encircling the touch pad with a first edge, a second edge, a third edge and fourth edge, wherein the first edge is opposite to the second edge, the third edge is opposite to the fourth edge, and the first edge, the second edge, and the third edge are surfaced with geometric textures; capturing a first image including the touch point, the second edge and third edge from a first corner between the first edge and the fourth edge; capturing a second image including the touch point, the first edge and the third edge from a second corner between the second edge and fourth edge; and performing a characteristic extraction process on the geometric textures of the first and second images to determine coordinates of a touch point where the touch pad is contacted and identify obstruction locations on the first and second images respectively;
wherein the first and second images are one dimensional line images, and the object on the touch point is an obstruction that prevents geometric textures on relative locations to be presented on the first and second images. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification