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:
Feb. 21, 2012

Filed:

Mar. 11, 2008
Applicants:

Tomoyuki Sakata, Fukuoka, JP;

Yoshikazu Nakanishi, Fukuoka, JP;

Haruki Tanaka, Fukuoka, JP;

Kouichi Maeda, Fukuoka, JP;

Takeshi Noma, Fukuoka, JP;

Inventors:

Tomoyuki Sakata, Fukuoka, JP;

Yoshikazu Nakanishi, Fukuoka, JP;

Haruki Tanaka, Fukuoka, JP;

Kouichi Maeda, Fukuoka, JP;

Takeshi Noma, Fukuoka, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2006.01); H04J 3/06 (2006.01); H04L 7/04 (2006.01);
U.S. Cl.
CPC ...
Abstract

A transponder includes a CDR section that extracts clocks from an input signal, an oscillating section that can output various frequencies to the CDR section, a frequency instruction processing section that instructs the oscillating section to output an arbitrary frequency, a detection processing section, and a frame processing section control section. The detection processing section determines whether the frequency output from the oscillating section and an input signal synchronize in frequency or not in response to an instruction by the frequency instruction processing section, and detects a synchronization frequency. The frame processing section control section operates a frame processing section based on the synchronization frequency detected by the detection processing section.


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