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:
Oct. 18, 2022
Filed:
Oct. 26, 2021
Hid Global Cid Sas, Suresnes, FR;
Hid Global Ireland Teoranta, Baile Na HabHann, IE;
Paul Shane Doran, Galway, IE;
Nipun Sharma, Colombes, FR;
HID Global CID SAS, Suresnes, FR;
HID Global Ireland Teoranta, Baile Na HabHann, IE;
Abstract
A laser engraving apparatus () is calibrated using a number of predetermined calibration images (). The calibration images () are engraved on a predefined substrate surface () of a substrate () by varying only a single laser parameter. Based on measured colour values of the engraved calibration images, a relationship between said colour values and a predefined laser parameter value, for example, a predefined laser power, is established. This relationship is then used to generate a map for mapping a grayscale value of an input image to a grayscale value of an output image, which is then engraved on the substrate () while varying the same laser parameter that was varied during the calibration.