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:
Apr. 01, 2003
Filed:
Mar. 04, 2002
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A sample rate converter for converting a data stream having a first base sampling frequency to a data stream having a second base sampling frequency. Up-sampling circuitry receives first oversampled data having a first oversampling ratio with respects to the first base frequency and outputs second oversampled data having a second oversampling ratio with respects to the first base sampling frequency. Resampling circuitry resamples the second oversampled data by a resampling frequency ratio of integers representing a ratio of the first and second base frequencies and generates third oversampled data having the second oversampling ratio with respects to the second base frequency. Down-sampling circuitry then down-samples the third oversampled data and generates fourth oversampled data having the first oversampling ratio with respects to the second base frequency.