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:
Apr. 28, 2009
Filed:
Sep. 05, 2007
Steven K. Sullivan, Beaverton, OR (US);
Michael S. Hagen, Vancouver, WA (US);
Steven K. Sullivan, Beaverton, OR (US);
Michael S. Hagen, Vancouver, WA (US);
Tektronix, Inc., Beaverton, OR (US);
Abstract
A logic analyzer having clock channels and data channels includes digitizer followed by a digital filter in each channel, the digital filter compensating for losses in signal fidelity in a signal under test. The resulting enhanced multi-bit samples are stored in respective waveform memories for subsequent display as analog waveforms and as logic data. The multi-bit samples from each channel are re-sampled by a regenerated sample clock to determine the logic values of the signal at precise times. For high speed serial data, each channel is divided into multiple clock channels and sampling channels, the outputs from the clock channels being phase adjusted to provide a precise sample clock to the sampling channels and the outputs from the sampling channels being combined to form a serial data output.