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:
Nov. 16, 2010
Filed:
Feb. 05, 2007
Tsuyoshi Ikushima, Nara, JP;
Satoshi Furusawa, Osaka, JP;
Tomokazu Sada, Osaka, JP;
Masaru Fuse, Osaka, JP;
Tsuyoshi Ikushima, Nara, JP;
Satoshi Furusawa, Osaka, JP;
Tomokazu Sada, Osaka, JP;
Masaru Fuse, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A highly concealable data communication apparatus based on an astronomical complexity and causing an eavesdropper to take a significantly increased time to analyze a cipher text, is provided. In a multi-level code generation section, a random number sequence generation sectiongenerates, based on predetermined key informationa plurality of modulation pseudo-random number sequences. The plurality of modulation pseudo-random number sequences is inputted to a multi-level conversion sectionas a part of an input bit sequence which is converted into a multi-level code sequenceA multi-level processing sectioncombines the multi-level code sequenceand information dataand generates a multi-level signalhaving a plurality of levels corresponding to a combination of the multi-level code sequenceand the information data