High resolution and high sensitivity optically activated touch sensing device using multiple color light sources
OwnerWen-Chieh Geoffrey Leeinventor
Life of this patent
Estimating the term…
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.
Claims14
A motion detection device, comprising:
- a) a plurality of lights to illuminate a moveable element, wherein each of the lights produce a different wavelength of light;
- b) a light sensing device capable of detecting a hue of a reflection of light from said moveable element illuminated by said plurality of lights;
- and
- c) wherein said motion detection device is capable of evaluating said hue to determine location or movement of the moveable element.
A method of detecting motion, comprising:
- a) illuminating a moveable device with a plurality of light sources, wherein each of the light sources emits light in a wavelength different from one another;
- b) detecting a hue of light reflected from said moveable device;
- and
- c) determining motion and location of the moveable device from said hue to produce control or selection capability.
Dependencies are inferred from the claim text.