The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 17, 2002
Filed:
Dec. 19, 2000
Winbond Electronics Corporation, Hsin Chi, TW;
Abstract
Techniques and circuits for testing high-speed circuits using slow-speed input signals. Various designs for a “stimulus” generator are provided, which is capable of generating a high-speed stimulus based on, or in response to, one or more input signals. In one design, the generator includes two edge detectors coupled to a latch. Each edge detector receives a respective set of input signals and provides an intermediate signal. The latch receives the two intermediate signals from the two edge detectors and generates the output signal, which has a particular waveform pattern generated based on the active (e.g., leading) transitions in the two sets of input signals provided to the two edge detectors. In another design, the generator includes a ring oscillator that is enabled by one input signal, and further initiated by a pulse on another input signal provided to an input of a latch used to implement the oscillator.