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:
Aug. 15, 1989
Filed:
Aug. 05, 1987
Yih-Chyun Jenq, Lake Oswego, OR (US);
Philip S Crosby, Portland, OR (US);
Tektronix, Inc., Beaverton, OR (US);
Abstract
A method and apparatus for determining the effective bits of resolution of a digitizer wherein amplitude, frequency, phase angle and offset parameters characterizing a sinewave input signal to the digitizer are estimated from the waveform data sequence produced by the digitizer in response to the input signal. These estimated parameters are used to develop a model of the sinewave signal, and the effective bits of resolution of the digitizer are then determined by the comparing measured magnitudes of the sinewave signal as represented by the waveform data sequence to estimated magnitudes of the input signal being determined from the model.