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Creating a Data Window for Fast Video Signals

IP.com Disclosure Number: IPCOM000043224D
Original Publication Date: 1984-Jul-01
Included in the Prior Art Database: 2005-Feb-04

Publishing Venue

IBM

Related People

Authors:
Ko, MA [+details]

Abstract

Measurement of fast video signals is quite difficult. This article describes a method by which a data window for measuring such signals can be created. Large display video signals with relatively small pulse widths, e.g., on the order of 20 nanoseconds, present a problem in terms of measurement. Because of the rapid speed involved, measurement of such signals is not easily accomplished with conventional methods. In [*], a method was suggested for manipulating the data rate, in other words, slowing down the signal to a rate that can be handled by the measuring device. While this method is of value in the process of logic verification, it has unfortunate drawbacks when applied to the manufacturing card test area, where the detection of faults, not verification of logic, is the main goal.