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:
Jun. 08, 2011
Yoshiyasu Doi, Kawasaki, JP;
Yoshiyasu Doi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A receiver circuit includes: a first sampling circuit to sample input data in synchronization with a first edge of a sampling clock signal; a second sampling circuit to sample the input data in synchronization with a second edge of the sampling clock signal; a duty-cycle-distortion detection circuit to detect a duty-cycle-distortion amount indicating an error in a duty ratio of the sampling clock signal based on first data which is sampled by the first sampling circuit and second data which is sampled by the second sampling circuit; a correction circuit to correct the first data or the second data to generate first corrected data or second corrected data, respectively, based on the duty-cycle-distortion amount; and a clock data recovery circuit to select data out of the first corrected data and the second data and to recover the selected data.