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:
Nov. 04, 2025
Filed:
May. 02, 2023
Infineon Technologies Ag, Neubiberg, DE;
Reinhard Kussian, Klagenfurt, AT;
Infineon Technologies AG, Neubiberg, DE;
Abstract
A digital filtering device includes at least one processor, a sample buffer configured to store samples, the sample buffer being a circular buffer, and a coefficient array for storing coefficients of a digital filter. The coefficient array includes a set of digital filter coefficients and a copy of the set of coefficients. For each of a plurality of input samples, the at least one processor can obtain a sample and store the sample as a value in a sample buffer at a position indicated by a buffer pointer, calculate an output sample comprising to perform a multiply-accumulate (MAC) operation with values currently stored in the sample buffer and a subset of the coefficients stored in a coefficient array, wherein a position of the subset of coefficients in the coefficient array is indicated by a coefficient pointer; and update the buffer pointer and the coefficient pointer.