Title:
データ送信装置、データ受信装置、及びデータ通信装置
Document Type and Number:
Japanese Patent JP4906732
Kind Code:
B2
Abstract:
A data communication apparatus is highly concealable and significantly increases time necessary for an eavesdropper to analyze cipher text. A multi-level code generation section generates, by using predetermined key information, a multi-level code sequence in which a signal level changes so as to be random numbers. The multi-level processing section combines a multi-level code sequence and information data, and generates a multi-level signal having a level corresponding to a combination of the multi-level code sequence and the information data. In the multi-level code generation section, a random number sequence generation section generates a binary random number sequence by using the predetermined key information. A multi-level conversion section generates a multi-level code sequence from the binary random number sequence in accordance with a predetermined encoding rule.
Inventors:
Tomokazu Sada
Yu Fuse
Furusawa Sato
Go Ikushima
Yu Fuse
Furusawa Sato
Go Ikushima
Application Number:
JP2007540948A
Publication Date:
March 28, 2012
Filing Date:
October 13, 2006
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H04K1/00; H04L9/20
Domestic Patent References:
| JPH10327141A | 1998-12-08 | |||
| JP2002111660A | 2002-04-12 | |||
| JP2005057313A | 2005-03-03 |
Attorney, Agent or Firm:
Patent business corporation Ogasawara patent office