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:
Jul. 28, 2020
Filed:
Jun. 25, 2019
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventor:
Yasufumi Sakai, Fuchu, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 25/03 (2006.01); H03K 3/037 (2006.01); H03K 5/003 (2006.01); H03K 5/24 (2006.01); H04B 3/04 (2006.01);
U.S. Cl.
CPC ...
H04L 25/03057 (2013.01); H03K 3/037 (2013.01); H03K 5/003 (2013.01); H03K 5/24 (2013.01); H04B 3/04 (2013.01); H04L 25/03 (2013.01);
Abstract
A decision feedback equalizer includes: a comparison circuit; a latch circuit configured to latch a result of comparison by the comparison circuit; a setting circuit configured to set a decision threshold of the comparison circuit in accordance with a control signal; and a switch circuit configured to be controlled to be turned on and off by an output signal from the latch circuit, wherein the setting circuit is configured to be connected in parallel with an input stage of the comparison circuit through the switch circuit and operate in synchronization with a clock signal for driving the comparison circuit.