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:
Aug. 13, 2024
Filed:
Mar. 01, 2022
Anokiwave, Inc., San Diego, CA (US);
Eythan Familier, San Diego, CA (US);
Kartik Sridharan, San Diego, CA (US);
Jun Li, San Diego, CA (US);
Gaurav Menon, San Marcos, CA (US);
Shamsun Nahar, San Diego, CA (US);
Akhil Garlapati, San Diego, CA (US);
Scott Humphreys, Greensboro, NC (US);
Antonio Geremia, San Diego, CA (US);
Anokiwave, Inc., San Diego, CA (US);
Abstract
Digital post-processing of time-to-digital converter (TDC) output data can be used to map each TDC code to the ideal one, but this requires knowing the TDC input-output mapping. Therefore, a calibration system and method are provided for characterizing operation of a TDC to compensate for non-idealities. Input signals having a known time difference are provided to the TDC, and a mapping between the TDC output and the known time difference is stored in a mapping table. With the described method, it is possible to input an input ramp of very low slope to construct this mapping to a desired resolution during a background calibration procedure. This characterizing and mapping can be performed across a range of input signals having different known time differences. After calibration, a mapping table can be used by a mapping circuit of the TDC or by a digital post-processing function to provide a compensated TDC output.