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:
Sep. 17, 2019
Filed:
Dec. 12, 2016
Sensl Technologies Ltd, County Cork, IE;
Steven John Buckley, Henlow, GB;
John Carlton Jackson, Cobb, IE;
SENSL TECHNOLOGIES LTD., County Cork, IE;
Abstract
A histogramming readout circuit is described. The readout circuit comprises a time to digital converter (TDC) configured to continually report time-stamps defining an arrival time of a laser clock and a signal output from a photosensor. Memory is provided for 10 storing TDC events. A programmable processor is configured to implement a state machine. The state machine being operable to save a time-stamp when a TDC event is detected; determine the time of flight of each of the photons detected by the photosensor; use each calculated time of flight to address a memory location; build up a histogram of the TDC data values using the memory locations as time-bins; and maintain a pointer to a maximum memory location where the highest number of TDC event resides. A calculator is operable to read the value of the maximum memory location and one or more adjacent time-bins either side for processing.