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:
Mar. 21, 2000
Filed:
Mar. 27, 1998
Applicant:
Inventors:
Xianggang Yu, Austin, TX (US);
Terry Lee Sculley, Austin, TX (US);
Jeffrey Alan Niehaus, Austin, TX (US);
Assignee:
ESS Technology, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
708313 ;
Abstract
A decimation filtering circuit for performing a decimation operation with a decimation factor of M in a pipelined structure. A finite impulse response ('FIR') filtering of N taps for achieving a desired frequency response is designed to have an integral ratio of N/M. A total of N/M processing stages is connected in series to accumulate filtered data based on data samples of an input signal and predetermined FIR coefficients. Each of the N/M processing stages produces an accumulated output in every other M accumulations for M input data samples.