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:
May. 06, 2014
Filed:
Feb. 28, 2005
Applicant:
Xingdong Dai, Bethlehem, PA (US);
Inventor:
Xingdong Dai, Bethlehem, PA (US);
Assignee:
Agere Systems LLC, Allentown, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03D 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and apparatus are provided for counter-based digital frequency lock detection. A counter-based digital frequency lock detector in accordance with the present invention comprises a reference counter clocked by a reference clock and a target counter clocked by a target clock. The target counter is n bits and n is less than a number of bits of the reference counter. A frequency offset violation of the target clock is detected by comparing a value of the target counter to an n bit counter.