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. 15, 2011

Filed:

May. 24, 2005
Applicants:

Masao Masugi, Tokyo-to, JP;

Masaharu Sao, Tokorozawa, JP;

Yoshiharu Akiyama, Tokorozawa, JP;

Hiroshi Yamane, Tokorozawa, JP;

Tetsuya Tominaga, Kodaira, JP;

Inventors:

Masao Masugi, Tokyo-to, JP;

Masaharu Sao, Tokorozawa, JP;

Yoshiharu Akiyama, Tokorozawa, JP;

Hiroshi Yamane, Tokorozawa, JP;

Tetsuya Tominaga, Kodaira, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04K 1/02 (2006.01); H04L 9/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

A clock signal extractor () is connected to an interface of an information equipment () for processing an information signal, to extract a clock signal component from the information signal. A clock signal generator () generates a pseudo clock signal having an optional phase difference relative to the clock signal component extracted by the clock signal extractor (). A prevention signal generator () generates, based on the pseudo clock signal generated by the clock signal generator (), a leakage prevention signal having an electromagnetic wave strength stronger than electromagnetic waves leaking from the information signal. A prevention signal output unit () outputs the leakage prevention signal generated by the prevention signal generator ().


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