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.

Date of Patent:
Dec. 31, 2013

Filed:

Mar. 22, 2012
Applicant:

Masaru Takehara, Yokohama, JP;

Inventor:

Masaru Takehara, Yokohama, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 7/00 (2006.01); H03K 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A synchronization circuit that synchronizes received data, includes: a determiner for determining whether or not data with a phase of a internal clock can be stably captured by the synchronization circuit, when the synchronization circuit accepts the data received from another device connected to the synchronization circuit with the phase of the internal clock of the synchronization circuit; a first flip-flop circuit accepting the data and the internal clock, capturing the data with the phase of the internal clock and synchronizing the data, when the determiner determines that the synchronization circuit can stably capture the data; a second flip-flop accepting the data and an inverted internal clock that has a phase obtained by inverting the phase of the internal clock, capturing the data with the phase of the inverted internal clock, and synchronizing the data, when the determiner determines that the synchronization circuit can not stably capture the data.


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