Title:
SYSTEM FOR DETECTING AND CORRECTING RECOGNIZED COORDINATES OF INFRARED TOUCH PEN FOR ELECTRONIC BLACKBOARD
Document Type and Number:
WIPO Patent Application WO/2023/171840
Kind Code:
A1
Abstract:
Disclosed is a system for detecting and correcting recognized coordinates of an infrared touch pen for an electronic blackboard. The system for detecting and correcting recognized coordinates of an infrared touch pen for an electronic blackboard according to one embodiment of the present invention comprises: a laser irradiation unit for irradiating a predetermined first area with a laser pointer; a camera capture unit for capturing a display panel and the first area; an image analysis unit for analyzing image data captured by the camera capture unit and determining whether the infrared touch pen is recognized; a touch pen recognition unit for calculating coordinate information of the infrared touch pen when the infrared touch pen is detected by the image analysis unit; and a coordinate correction unit for correcting the calculated coordinate information on the basis of the image data analyzed by the image analysis unit.
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Inventors:
KIM BONG HWAN (KR)
KIM HYEON CHEOL (KR)
KIM HYEON CHEOL (KR)
Application Number:
PCT/KR2022/003418
Publication Date:
September 14, 2023
Filing Date:
March 11, 2022
Export Citation:
Assignee:
ABLE SOFT INC (KR)
International Classes:
G06F3/041; G06F3/042
Foreign References:
| KR20070003753A | 2007-01-05 | |||
| KR20170138867A | 2017-12-18 | |||
| KR20070105322A | 2007-10-30 | |||
| JP2012113494A | 2012-06-14 | |||
| JP2020052798A | 2020-04-02 | |||
| KR20140124025A | 2014-10-24 | |||
| KR20050022557A | 2005-03-08 |
Attorney, Agent or Firm:
HA, Dong Yeop (KR)
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