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. 07, 2026
Filed:
Jul. 07, 2023
Stmicroelectronics International N.v., Geneva, CH;
Andreas Assmann, Edinburgh, GB;
STMicroelectronics International N.V., Geneva, CH;
Abstract
A method of operating a time-of-flight (ToF) ranging system includes: receiving a histogram that includes a cross-talk signal generated by reflected light pulses from a cover glass of the ToF ranging system; finding, in a first region of the histogram, a first rising edge having a gradient that is larger than a threshold or is a maximum gradient in the first region, where the first rising edge is in a first histogram bin having a first value; determining a second value of a second histogram bin in the first region, where the first histogram bin precedes the second histogram bin by a pre-determined distance; estimating a ratio between the first region of the histogram and a pre-stored light pulse shape based on the first value and the second value; scaling the pre-stored light pulse shape with the estimated ratio; and subtracting the scaled pre-stored light pulse shape from the histogram.