OPTICAL TOUCH SCREEN DEVICE
First Claim
11. An optical touch screen device comprising:
- a display panel comprising a display screen;
a light source module configured for projecting an infrared light grid or an infrared light pattern over the display screen;
an infrared light capture module configured for capturing images of an input device entry in the infrared light grid or in the infrared light pattern, determining coordinates of a position of the input device based on the images, and generating a first input signal associated with the coordinates of the input device; and
a sound detecting member configured for detecting a stroke of the input device on the display screen, and generating a second input signal associated with the stroke of the input device.
1 Assignment
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Accused Products
Abstract
An optical touch screen device includes a display panel, a light source module, an image capture module, a sound detecting member, and a processing unit. The display panel includes a display screen. The light source module is configured for emitting light to illuminate an input device on the display screen. The image capture module is configured for capturing images of the illuminated input device, determining coordinates of a position of the input device on the display screen based on the images, and generating a first input signal associated with the coordinates of the input device. The sound detecting member is configured for detecting a stroke of the input device on the display screen, and generating a second input signal associated with the stroke of the input device. The processing unit is configured for generating a command signal based on the first input signal and the second input signal.
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Citations
20 Claims
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11. An optical touch screen device comprising:
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a display panel comprising a display screen; a light source module configured for projecting an infrared light grid or an infrared light pattern over the display screen; an infrared light capture module configured for capturing images of an input device entry in the infrared light grid or in the infrared light pattern, determining coordinates of a position of the input device based on the images, and generating a first input signal associated with the coordinates of the input device; and a sound detecting member configured for detecting a stroke of the input device on the display screen, and generating a second input signal associated with the stroke of the input device. - View Dependent Claims (12, 13, 14, 15)
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16. An optical touch screen device comprising:
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a display panel comprising a display screen; a light source module configured for emitting infrared light to form an infrared light grid or an infrared light pattern over the display screen; an infrared light capture module configured for capturing images of an input device entry in the infrared light grid or in the infrared light pattern, determining a movement track of the input device based on the images, and generating a first input signal associated with the movement track of the input device; a sound detecting member configured for detecting a stroke of the input device on the display screen, and generating a second input signal in response to the stroke of the input device; and a processing unit configured for generate a command signal based on the first input signal and the second input signal. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 17, 18, 19, 20)
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19-1. The optical touch screen device of claim 18, wherein the sound processing unit comprises a digital signal processor.
Specification