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. 21, 1999
Filed:
Sep. 15, 1997
Niels Knudsen, Austin, TX (US);
National Instruments Corporation, Austin, TX (US);
Abstract
A system and method for compensating for glitches in a D/A converter, particularly in systems where the glitch is not constant during the sample period. In the preferred embodiment of the invention, the system represents the glitch as a constant deviation during the sample period for the glitch. The system uses a compensation signal having a constant deviation with an area corresponding to the area of the glitch. This approximation in the frequency domain becomes more accurate for lower frequencies and is especially suitable in an over-sampled system. By treating and compensating the glitch as a constant deviation from the ideal signal during one sampling cycle, it is possible to cancel the spectral effects of the glitch at low frequencies. This approximation enables glitch compensation in a sampled signal.