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:
Oct. 08, 2013
Filed:
Jun. 10, 2010
Koushik Krishnan, San Jose, CA (US);
Jafar Savoj, Sunnyvale, CA (US);
Koushik Krishnan, San Jose, CA (US);
Jafar Savoj, Sunnyvale, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Methods and apparatus for a gray-coded phase rotating frequency divider. A phase selector is provided that includes two or more selectors, each selector configured to receive multiple clock phases and output a respective clock phase based on one or more selection bits that are part of a selection input, and a gray code generator configured to generate a gray coded output that forms the selection input so that when the gray coded output changes state only selection bits associated with a single selector change. A method includes grouping a plurality of clock phases into two or more groups, for each group, selecting a respective clock phase based on one or more selection bits that are part of a selection input, and generating a gray coded output that forms the selection input so that when the gray coded output changes state only selection bits associated with a single group change.