OPTICAL TOUCH SYSTEM, METHOD OF TOUCH DETECTION, AND COMPUTER PROGRAM PRODUCT

摘要

An optical touch system is provided. A reflecting unit is disposed beside a base plane. At least one light emitting module is disposed beside the base plane and provides a detecting light, wherein the detecting light is transmitted to the reflecting unit. At least one optical detecting module is disposed beside the base plane. A processing unit is coupled to the optical detecting module, wherein when a first object and a second object approach or touch the base plane, the processing unit determines which one of the intensity of a first portion of a signal corresponding to the first object OB1 and the intensity of a second portion of the signal corresponding to the second object OB2 from the optical detecting module is larger. Additionally, a method of touch detection and a computer program product are also provided.

主权项

1. An optical touch system for determining an action of at least one of a first object and a second object approaching or touching a base plane, the optical touch system comprising:
a reflecting unit disposed beside the base plane; at least one light emitting module disposed beside the base plane and providing a detecting light, wherein the detecting light is transmitted to the reflecting unit via a front of the base plane; at least one optical detecting module disposed beside the base plane, wherein the reflecting unit reflects the detecting light and transmits the detecting light to a first optical detecting module via the front of the base plane; and a processing unit coupled to the optical detecting module, wherein when at least one of the first object and the second object approaches or touches the base plane, the processing unit determines a location of the base plane that is approached or touched according to a signal corresponding to the detecting light from the optical detecting module, and when the first object and the second object approach or touch the base plane, the processing unit determines which one of an intensity of a first portion of the signal corresponding to the first object and an intensity of a second portion of the signal corresponding to the second object is larger.