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:
Feb. 03, 2015
Filed:
Nov. 28, 2012
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 25/03 (2006.01); H04B 1/717 (2011.01); H04B 1/7163 (2011.01); H03M 5/16 (2006.01); H03K 5/12 (2006.01); H03K 5/01 (2006.01);
U.S. Cl.
CPC ...
H04L 25/03 (2013.01); H04B 1/71635 (2013.01); H04B 1/7172 (2013.01); H04B 1/7174 (2013.01); H03M 5/16 (2013.01); H03K 5/12 (2013.01);
Abstract
A communication device includes: a converting part converting a data signal from a non-return-to-zero signal to a return-to-zero signal; a trigger flip-flop inverting an output signal every time the return-to-zero signal changes in one cycle; a first filter outputting a positive pulse and a negative pulse alternately, which indicate existence and absence of the pulse corresponding to a value of the data signal, by removing a low frequency component of an output signal of the trigger flip-flop.