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:
Sep. 14, 2010
Filed:
Apr. 29, 2009
Masazumi Marutani, Kawasaki, JP;
Masazumi Marutani, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A phase difference detector for detecting a phase difference between input clocks which both have a same first frequency, including: a pulse width conversion unit for converting the input clocks into a phase difference signal indicating by a pulse width a phase difference between the input clocks; and a counter unit which samples a level of the phase difference signal using a reference clock having a second frequency which is slower than the first frequency, and counts the number of levels of the phase difference signal using a first weighting according to the sampled level of the phase difference signal. When the count value of the counter unit transits in a predetermined range, the phase difference between the input clocks is detected according to the first weighting.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile