Invention Grant
- Patent Title: High resolution and high sensitivity optically activated touch sensing device using multiple color light sources
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Application No.: US14032604Application Date: 2013-09-20
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Publication No.: US09304604B2Publication Date: 2016-04-05
- Inventor: Wen-Chieh Geoffrey Lee
- Applicant: Wen-Chieh Geoffrey Lee
- Agency: Saile Ackerman LLC
- Agent Stephen B. Ackerman
- Main IPC: G01B11/14
- IPC: G01B11/14 ; G06F3/03

Abstract:
A cursor maneuvering device comprises a cavity containing a plurality of colored lights and an image sensor and covered with a light mixing plate. The colored lights are located in the cavity in an as largely departed as possible manner and illuminate a pointing device contacting the surface of the light mixing plate. The image sensor detects a hue of light illuminating the pointing device and controls a cursor depending upon the hue. Changes in the hue of a moving pointing device are translated into movement of the cursor on the display of an electronic device. The pointing device may be anything touching the light mixing plate, for instance a finger.
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