Performing temporal checking

Details Performing temporal checking Performing temporal checking

2008-04-14

2010-12-14

Raymond, Edward (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C716S030000

Reexamination Certificate

active

07853420

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.

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