Patent · US Expired

CT data acquisition system trigger jitter filter

US6574301B1 · kind B1 · utility

6Cited by
5References
19Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 11, 2002
Grant dateJun 3, 2003
Priority date—
Expiry dateFeb 11, 2022

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S378/901
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A method and apparatus for reducing trigger jitter from a CT system position encoder including the steps, for each trigger pair in the encoder signal, identifying the integer portion of average period corresponding to N preceding trigger pairs, identifying a modulus-N residual corresponding to the N preceding trigger pairs as a lag value, adding the lag value to a lag count, determining when the lag count exceeds N and, where the lag count exceeds N, incrementing the integer portion by one, identifying a modulus-N residual corresponding to the lag count, setting the lag count equal to the residual corresponding to the lag count and generating a final binary trigger signal corresponding to the integer portion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.