Touch system comprising optical touch panel and touch pen and method of controlling interference optical signal in touch system

摘要

Disclosed is a method of controlling an interference optical signal in a touch system and a touch system including an optical touch panel and a touch pen. The optical touch panel device of the present invention includes a pattern analyzer that detects a pattern of an optical signal by scanning an optical touch panel and compares a detection pattern of the optical signal with patterns set in respective button functions of the touch pen; A touch position detecting unit for recognizing the detected position of the optical signal as a touch position when the detection pattern corresponds to a first pattern set for a specific button function; An interference controller for determining the optical signal as an interference signal when the detection area of the optical signal exceeds a critical range; And a wireless transmission unit wirelessly outputting a control signal to the touch pen so that the touch pen changes a first pattern set to the specific button function to a second pattern.