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. 02, 2015
Filed:
Apr. 17, 2014
Applicant:
Altera Corporation, San Jose, CA (US);
Inventor:
Warren Trent Nordyke, Cupertino, CA (US);
Assignee:
Altera Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 21/00 (2006.01); H03K 21/02 (2006.01);
U.S. Cl.
CPC ...
H03K 21/023 (2013.01); H03K 21/026 (2013.01);
Abstract
A frequency divider circuit includes an adder circuit, multiplexer circuits, and a phase interpolator circuit. The adder circuit generates a summed value. The multiplexer circuits receive first periodic signals and generate second periodic signals by selecting among the first periodic signals based on the summed value. The phase interpolator circuit generates a third periodic signal using a weighted average of the second periodic signals that is determined based on the summed value.