Patent · US Expired

Edge placement accuracy of signals generated by test equipment

US7092827B2 · kind B2 · utility

1Cited by
5References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 10, 2004
Grant dateAug 15, 2006
Priority date—
Expiry dateAug 10, 2024

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01R31/31937
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A software controlled mechanism causing a test equipment to place the edges of test signals accurately. The mechanism determines expected time of occurrence of an edge of a signal in relation to a tester cycle time. The mechanism sends commands to the test equipment to receive back the signal (of interest) in multiple cycles and provides the time points corresponding to the edge in the multiple cycles. The software controlled mechanism computes an error based on the time points and the expected time, and adjusts the timing of the edges of the signal according to the error. Such computation and adjustment are performed until the error is within an acceptable range.

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