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. 07, 2004
Filed:
Aug. 15, 2003
Vincent Quiquempoix, Divonne-les-Bains, FR;
Gabriele Bellini, Froideville, CH;
Jerry Collings, Santa Clara, CA (US);
Microchip Technology Incorporated, Chandler, AZ (US);
Abstract
A digital decimation filter with programmable frequency notches is disclosed. The digital decimation filter performs integration, differentiation, and scaling to produce a filtered output signal. The differentiation is preformed by a programmable counter. The filter has a control unit that controls the behavior of the filter. The control unit has registers to contain ther values of the frequency notches of the filter. The control unit activates the differentiator based on the value of the frequency notches in order to achieve filtration. The scaling unit uses a register, a bit shifter, and an adder to minimize complexity. The digital decimation filter provides high rejection with low complexity.