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. 27, 2001
Filed:
Jan. 20, 1998
Applicant:
Inventors:
Assignee:
Cirrus Logic, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 3/22 ; G06F 1/717 ; H03M 7/00 ; H04L 7/00 ;
U.S. Cl.
CPC ...
H04J 3/22 ; G06F 1/717 ; H03M 7/00 ; H04L 7/00 ;
Abstract
An asynchronous sample rate converter for converting a first sample rate in a signal to a second sample rate in the same signal is presented. The signal is first provided as input to an interpolator which upsamples the signal to form a signal having sample rate UF,where the upsampling factor U is a variable that is directly related to the ratio F,/F,. The resampler then linearly interpolates the upsampled signal to form a signal having sample rate DF,. Finally, the resampled signal is downsampled to form a signal having sample rate F,.