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:
Jun. 25, 2013
Filed:
Dec. 30, 2011
Applicant:
Ferdinando Pace, Birmensdorf, CH;
Inventor:
Ferdinando Pace, Birmensdorf, CH;
Assignee:
St-Ericsson SA, Plan-les-Ouates, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A high speed clock frequency divider circuit is provided that uses a first shift register loop-back circuit and a second shift-register loop-back circuit to shift a predetermined array of bits therethrough. The first shift register loop-back circuit is clocked on a rising clock edge of an input clock signal, while the second shift register loop-back signal is clocked on a negative edge of the input clock signal. The outputs of the first and second loop-back shift registers are ORed to provide a 50% duty cycle output clock signal.