Cryptography – Communication system using cryptography – Data stream/substitution enciphering
Reexamination Certificate
2011-03-22
2011-03-22
Moise, Emmanuel L (Department: 2437)
Cryptography
Communication system using cryptography
Data stream/substitution enciphering
C380S037000, C380S042000, C714S776000, C375S264000
Reexamination Certificate
active
07912215
ABSTRACT:
A data transmitting apparatus generates, by using predetermined first key information and information data, a multi-level signal in which a signal level changes so as to be approximately random numbers, and converts the multi-level signal into a modulated signal, in a predetermined modulation method and transfer the same. A data receiving apparatus demodulates the modulated signal so as to be converted into a multi-level signal, and reproduces information data from the multi-level signal, using second key information which has the same content as first key information used by the data transmitting apparatus.
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Furusawa Satoshi
Fuse Masaru
Ikushima Tsuyoshi
Sada Tomokazu
Moise Emmanuel L
Panasonic Corporation
Teslovich Tamara
Wenderoth , Lind & Ponack, L.L.P.
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