The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2025
Filed:
May. 11, 2023
Varjo Technologies Oy, Helsinki, FI;
Mikko Strandborg, Hangonkylä, FI;
Mikko Ollila, Tampere, FI;
Varjo Technologies Oy, Helsinki, FI;
Abstract
A system includes a tracking device and a light source. The tracking device has a camera and a first controller. The camera captures a first image and a second image. The first image is captured during a first period of time (t0-t1) and the second image is captured during a second period of time (t2-t3). The first controller is coupled to the camera and configured to obtain first timing information and second timing information; form timing instructions; and communicate timing instructions to light source over a communication interface. The light source is configured to use timing instructions to illuminate first amount of light and a second amount of light. The first controller is further configured to calculate image intensity difference between the first and second image to identify from first image pixel(s) illuminated by the light source.