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:
Feb. 21, 2006
Filed:
May. 07, 2004
Applicants:
Xiang Zhu, San Jose, CA (US);
Ming Qu, San Jose, CA (US);
Zhengyu Yuan, San Jose, CA (US);
Inventors:
Assignee:
Lattice Semiconductor Corporation, Hillsboro, OR (US);
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A phase detector and control signal generator responds to a reference signal and a feedback signal to produce a non-delayed up and down signal. A programmable delay unit delays the non-delayed up and down signal to provide up and down signals for a charge pump. A divider configured to respond to the up and down signals provides a divided clock signal. A non-overlapped clock generator configured to respond to the divided clock signal to provide non-overlapped hold even and hold odd signals for the switched-capacitor ripple-smoothing filter.