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.:

US 8401180 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 19, 2013

Filed:

Mar. 21, 2008
Applicants:

Yuichi Komano, Kawasaki, JP;

Hideo Shimizu, Kawasaki, JP;

Koichi Fujisaki, Kawasaki, JP;

Hideyuki Miyake, Ota-ku, JP;

Atsushi Shimbo, Bunkyo-ku, JP;

Inventors:

Yuichi Komano, Kawasaki, JP;

Hideo Shimizu, Kawasaki, JP;

Koichi Fujisaki, Kawasaki, JP;

Hideyuki Miyake, Ota-ku, JP;

Atsushi Shimbo, Bunkyo-ku, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04K 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

According to an aspect of the present invention, there is provided a non-linear data converter including: first to fourth converters that each performs a respective converting process on an input bit string to output respective output bit string; a generator that generates a random number bit string; and a selector that selects any one of the output bit strings from the first to fourth converters based on the random number bit string. Each of the converting processes is equivalent to performing a first mask process, a non-linear conversion predetermined for an encoding or a decoding and a second mask process.


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