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. 26, 2016
Filed:
Aug. 04, 2015
Applicant:
Stmicroelectronics N.v., Amsterdam, NL;
Inventors:
Steven R. Norsworthy, Cardiff, CA (US);
Jason Rupert Redgrave, Mountain View, CA (US);
Assignee:
STMICROELECTRONICS N.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); H03H 17/06 (2006.01); H04L 7/02 (2006.01);
U.S. Cl.
CPC ...
H04L 7/0008 (2013.01); H03H 17/0614 (2013.01); H03H 17/0628 (2013.01); H04L 7/005 (2013.01); H04L 7/0025 (2013.01); H04L 7/02 (2013.01); H03H 2218/04 (2013.01);
Abstract
An interpolator or decimator includes an elastic storage element in the signal path between first and second clock domains. The elastic element may, for example, be a FIFO which advantageously allows short term variation in sample clocks to be absorbed. A feedback mechanism controls a delta-sigma modulated modulo-N counter based sample clock generator. The elastic element combined with a delta-sigma modulator and counter creates a noise-shaped frequency lock loop without additional components, resulting in a much simplified interpolator and decimator.