Patent · US Active

Method and apparatus for performing temporal checking

US7464354B2 · kind B2 · utility

2Cited by

4References

6Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Parag Birmiwal · Austin, US
Sundeep Chadha · Austin, US
Tilman Gloekler · Schrobenhausen, DE
Johannes Koesters · Holzgerlingen, DE

Key dates

Filing date	Dec 8, 2005
Grant date	Dec 9, 2008
Priority date	—
Expiry date	Dec 16, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/318328
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An apparatus for performing temporal checking is disclosed. A signal logger for performing temporal checking includes a group of edge detection modules and a group of counting modules. During testing, the signal logger is coupled to a device under testing (DUT). Each of the edge detection modules is capable of maintaining edge information after a state transition on a signal within the DUT has been detected. Each of the counting modules is associated with one of the edge detection modules. Each of the countering modules is capable of maintaining a clock cycle count information associated with a detected edge. After the testing has been completed, temporal checking information on a signal within the DUT can be obtained by reconstructing the edge information and the associated clock cycle count information of the signal collected during the test.

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