Device and related method for converting display screen into touch panel screen
First Claim
1. A light pointing touch panel display device, which converts a display screen into a touch panel screen, comprising:
- a projection screen;
an image projection unit for projecting an image on the projection screen;
a light pointer for emitting a light spot signal of a specific wavelength on the projection screen;
an image detecting unit, comprising;
a fisheye lens for receiving the image on the projection screen to generate a fisheye distorted image; and
an optical filter for filtering out the optical energy except the light spot signal of the specific wavelength;
an image processing unit, coupled to the image detecting unit, for calculating a first position of the light spot on the projection screen according to the fisheye distorted image; and
a message transmitting unit, coupled to the image processing unit, for outputting a touch panel signal according to the calculating result of the image processing unit.
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Accused Products
Abstract
A device for converting display screen into touch panel screen includes a projection screen; an image projection unit for projecting an image on the projection screen; a light pointer for emitting a light spot signal of a specific wavelength on the projection screen; an image detecting unit, which includes a fisheye lens for receiving the image on the projection screen to generate a fisheye distorted image; and an optical filter for filtering out the optical energy except the light spot signal of the specific wavelength; an image processing unit, coupled to the image detecting unit, for calculating a first position of the light spot on the projection screen according to the fisheye distorted image; and a message transmitting unit, coupled to the image processing unit, for outputting a touch panel signal according to the calculating result of the image processing unit.
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Citations
11 Claims
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1. A light pointing touch panel display device, which converts a display screen into a touch panel screen, comprising:
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a projection screen; an image projection unit for projecting an image on the projection screen; a light pointer for emitting a light spot signal of a specific wavelength on the projection screen; an image detecting unit, comprising; a fisheye lens for receiving the image on the projection screen to generate a fisheye distorted image; and an optical filter for filtering out the optical energy except the light spot signal of the specific wavelength; an image processing unit, coupled to the image detecting unit, for calculating a first position of the light spot on the projection screen according to the fisheye distorted image; and a message transmitting unit, coupled to the image processing unit, for outputting a touch panel signal according to the calculating result of the image processing unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A light pointing touch panel detecting method, which is utilized for converting a display screen into a touch panel screen, comprising:
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projecting an image on a projection screen; emitting a light spot signal of a specific wavelength on the projection screen; receiving the image on the projection screen to generate a fisheye distorted image; filtering out optical energy except the light spot signal of the specific wavelength; calculating a first position of the light spot on the projection screen according to the fisheye distorted image; and outputting a touch panel signal according to the calculating result of the image processing unit. - View Dependent Claims (8, 9, 10, 11)
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Specification