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. 22, 1994
Filed:
Aug. 13, 1992
Creigton S Asato, San Jose, CA (US);
Christoph Ditzen, San Jose, CA (US);
VLSI Technology, Inc., San Jose, CA (US);
Abstract
Output data points of a digital FIR filter are calculated by storing input data points in an addressable memory and accessing the addressable memory to supply a new input data point exactly once for each output data point after a first output data point and storing each input data point in a first recirculating memory for so long as that input data point is needed to calculate a next output data point. The input data points stored in the first recirculating memory are used to calculate output data points. Furthermore, coefficients are stored in a second recirculating memory and are used to calculate the output data points. As a result, only one memory access is required per output data point.