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AssigneeElectronics and Telecommunications Research Institute
InventorsJeongmook Lim, Yongki Son, Dongwoo Lee, Ilyeon Cho
Estimating the term…
Disclosed are a method and system for tracking multiple infrared signal coordinates. The method for tracking multiple infrared signal coordinates includes: sequentially operating a plurality of infrared generators; photographing the infrared generators; calculating frequency photographed by each infrared generators; and when the calculated frequency at the time of calculating does not meet the reference value, delaying, by a delay time, the flickering of the infrared generator where the frequency does not meet the reference value.
A method for tracking multiple infrared signal coordinates, comprising:
A system for tracking infrared signal coordinates including multiple infrared generators and infrared camera devices, the infrared generators including:
Infrared generators used for a system for tracking multiple infrared signal coordinate, comprising:
An infrared camera device used for a system for tracking multiple infrared signal coordinates, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Arrangements for converting the position or the displacement of a member into a coded form: detection arrangements using opto-electronic means
Computing and data processing
About 5 years 10 months of term left · ends 5 Sep 2032 (estimated)
The present application claims priority to Korean Patent Application Serial Number 10-2008-0131557, filed on Dec. 22, 2008, the entirety of which is hereby incorporated by reference.
1. Field of the Invention
The present invention relates to a user interface device using infrared rays, and more specifically, to a method for distinguishing and detecting movements of multiple infrared generating devices and managing IDs of the infrared generating devices, when tracking positions of the infrared generating devices using infrared cameras.
FIG. 1 shows a system for tracking infrared signal coordinates according to the present invention;
FIG. 2A shows a case of a normal infrared image when turning-on a first infrared generator according to one embodiment of the present invention;
FIG. 2B shows a case where infrared image is not photographed when turning-on the first infrared generator according to one embodiment of the present invention;
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a system 200 for tracking infrared signal coordinates according to one embodiment of the present invention. The system 200 for infrared signal coordinates according to the present invention distinguishes multiple infrared generators using an infrared camera 100 and one or more infrared generator 10.
The infrared generator 10 of the system 200 includes an infrared light emitting unit 11, a flickering controller 12, and a wireless communication unit 13. The wireless communication unit 13 in the infrared generator can communicate wirelessly with the infrared camera device 100. The infrared light emitting unit 11 is flickered by repeating the process of turning-on for t seconds and turning-off for 2*t seconds. At this time, the range of t can be controlled to be equal to ⅓*n when the camera photographing speed is n frame. When the flickering controller 12 receives signals from the infrared camera through the wireless communication unit, it operates to control the signal flickering of the infrared generator 10. In other words, the flickering controller 12 can receive signals from the infrared camera through the wireless communication unit to delay flickering of the infrared generator 10 by t time and operate to flicker the infrared generator 10.