Data communication apparatus and data communication method

Details Data communication apparatus and data communication method Data communication apparatus and data communication method

2007-08-15

2010-11-23

Ahn, Sam K (Department: 2611)

Pulse or digital communications

Multilevel

Reexamination Certificate

active

07839946

ABSTRACT:
A data communication apparatus improves security against eavesdropping for secret communication by using Y-00 protocol. A multi-level code generation section generates, based on key information, a multi-level code sequence in which a signal level changes so as to be approximately random numbers. A level conversion section irreversibly converts the multi-level code sequence such that a converted multi-level code sequence does not constitute a mapping of the multi-level code sequence. A multi-level processing section generates a multi-level signal having a plurality of levels each corresponding to a combination between the information data and the multi-level code sequence. A modulator section modulates a multi-level signal in a predetermined modulation method and outputs a modulated signal.

REFERENCES:
patent: 3716852 (1973-02-01), Sawai
patent: 4464765 (1984-08-01), Shimizu
patent: 6577684 (2003-06-01), Hirano et al.
patent: 09-205420 (1997-08-01), None
patent: 2005-057313 (2005-03-01), None
Neri et al. Unequal Error Protection: a Turbo Multi Level Coding Approach, 2003, IEEE, p. 102-106.
“Cryptography and Network Security: Principles and Practice” Second Edition, William Stallings, Prentice-Hall, Inc., New Jersey, 1999, pp. 131-159 w/translation.
“Applied Cryptography” Second Edition, Bruce Schneier, John Wiley & Sons, Inc., 1996, pp. 369-395 w/translation.

Affiliated with

Also associated with

Rating

Data communication apparatus and data communication method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Data communication apparatus and data communication method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data communication apparatus and data communication method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4180516