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. 14, 2013
Filed:
Apr. 04, 2011
Applicants:
Haolu Xie, Chandler, AZ (US);
Manish N. Shah, Chandler, AZ (US);
Inventors:
Haolu Xie, Chandler, AZ (US);
Manish N. Shah, Chandler, AZ (US);
Assignee:
Fujitsu Semiconductor Limited, Yokohama-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 19/00 (2006.01); H04B 1/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
A frequency divider with a twenty-five percent duty cycle is disclosed. A frequency divider may include an input configured to receive a clock signal, each cycle of the clock signal including a first phase and a second phase, a plurality of latches, and a plurality of three-state circuits wherein a first of the plurality of three-state circuits is configured to drive a first twenty-five percent duty cycle signal from within the first three-state circuit high during a first phase of a first of two clock cycles.