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:
Mar. 17, 2009
Filed:
May. 31, 2007
Jeremy Scuteri, Highland, NY (US);
Jeremy Scuteri, Highland, NY (US);
Seiko Epson Corporation, Tokyo, JP;
Abstract
Circuits and methods and for dividing a frequency of an input signal by an integer divider value. The circuit generally comprises (a) a first frequency divider, including a first plurality of serially connected delay elements receiving the input signal and a first configurable feedback network, (b) a second frequency divider, including a second plurality of serially connected delay elements receiving an inverse of the input signal and a second configurable feedback network (c) configurable logic configured to select and/or combine outputs of the first and second frequency dividers and to produce a frequency divided output signal, and (d) a programmable circuit configured to selectably configure the first and second configurable feedback networks and the configurable logic. The present invention advantageously provides for a frequency divider structure that can be easily programmed to provide any integer divide ratio with a 50% duty cycle.