TOUCH SYSTEM INCLUDING OPTICAL TOUCH PANEL AND TOUCH PEN, AND METHOD OF CONTROLLING INTERFERENCE OPTICAL SIGNAL IN TOUCH SYSTEM
First Claim
1. An optical touch panel device comprising:
- a pattern analyzer configured to detect a pattern of an optical signal by scanning an optical touch panel and comparing a detected pattern with patterns designated to button functions of a touch pen;
a touch location detector configured to recognize a detected location of the optical signal as a touch location when the detected pattern corresponds to a first pattern designated to a button function;
an interference controller configured to determine whether or not the optical signal is an interference signal when a detected region of the optical signal exceeds a critical range; and
a wireless transmitter configured to output a control signal to the touch pen so that the touch pen may change the first pattern designated to the button function to a second pattern.
1 Assignment
0 Petitions
Accused Products
Abstract
A touch system including an optical touch panel and a touch pen, and a method of controlling an interference optical signal in the touch system. The optical touch panel device includes: a pattern analyzer detecting a pattern of an optical signal by scanning an optical touch panel, and comparing a detected pattern with patterns designated to button functions of a touch pen; a touch location detector recognizing a detected location of the optical signal as a touch location, if the detected pattern corresponds to a first pattern designated to a button function; an interference controller determining the optical signal as an interference signal, if a detected region of the optical signal exceeds a critical range; and a wireless transmitter outputting a control signal to the touch pen so that the touch pen may change the first pattern designated to the button function to a second pattern.
-
Citations
20 Claims
-
1. An optical touch panel device comprising:
-
a pattern analyzer configured to detect a pattern of an optical signal by scanning an optical touch panel and comparing a detected pattern with patterns designated to button functions of a touch pen; a touch location detector configured to recognize a detected location of the optical signal as a touch location when the detected pattern corresponds to a first pattern designated to a button function; an interference controller configured to determine whether or not the optical signal is an interference signal when a detected region of the optical signal exceeds a critical range; and a wireless transmitter configured to output a control signal to the touch pen so that the touch pen may change the first pattern designated to the button function to a second pattern. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A touch pen comprising:
-
a wireless receiver configured to receive a control signal from an optical touch panel requesting change of a first pattern, which corresponds to a pattern of an optical signal that is determined as an interference signal in an optical touch panel, designated to a button function to a second pattern; a pattern generator configured to change the first pattern designated to the button function to the second pattern according to the control signal; and a light-emitting device configured to generate an optical signal corresponding to the second pattern so that the optical touch panel performs the button function. - View Dependent Claims (7, 8, 9, 10)
-
-
11. A method of controlling an interference optical signal in an optical touch panel device, the method comprising:
-
detecting a pattern of an optical signal by scanning an optical touch panel and comparing a detected pattern of the optical signal to patterns designated to button functions of a touch pen; recognizing a detected location of the optical signal as a touch location when the detected pattern corresponds to a first pattern designated to a button function; determining the optical signal is an interference signal when a detected region of the optical signal exceeds a critical range; and wirelessly outputting a control signal to the touch pen so that the touch pen changes the first pattern designated to the button function to a second pattern. - View Dependent Claims (12, 13, 14, 15)
-
-
16. A method of controlling an interference optical signal in a touch pen, the method comprising:
-
wirelessly receiving a control signal requesting a change of a first pattern, which corresponds to a pattern of an optical signal that is determined as an interference signal in an optical touch panel, designated to a button function to a second pattern from the optical touch panel; changing the first pattern designated to the button function to the second pattern according to the control signal; and generating an optical signal corresponding to the second pattern so that the optical touch panel performs the button function. - View Dependent Claims (17, 18, 19, 20)
-
Specification