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:
May. 14, 2019
Filed:
Apr. 22, 2015
Ams Ag, Unterpremstaetten, AT;
Sajol Christopher Ghoshal, Austin, TX (US);
Sina Afshari, New York, NY (US);
ams AG, Unterpremstaetten, AT;
Abstract
A method for calibrating a color space transformation according comprises driving of a light source at a first ambient temperature T. The light source it is tuned to emit light with a number N of combinations of at least two correlated color temperatures and at least two intensities. Furthermore, the method includes receiving first red coordinates, first green coordinates and first blue coordinates measurements in the RGB color space. First x-coordinates, first y-coordinates and first z-coordinates are received from measurements in the XYZ color space. 3×N matrices RGB_and XYZ_are constructed based on the received coordinates. A 3×3 conversion matrix C is generated to fulfil the relation XYZ_=C*RGB_