Patent ID: 7010126

Claim:
A vertical synchronizing method for successively synchronizing a plurality of chaotic systems, each chaotic system having a master chaotic device and a slave chaotic device identical to the master chaotic device, comprising the steps of: synchronizing first chaotic system having first master chaotic device and first slave chaotic device wherein a noise signal is added to at least one variable of the first master chaotic device, and the noise signal is added to at least one variable of the first slave chaotic device which corresponds to the variable of the first master chaotic device; synchronizing second chaotic system having second master chaotic device and second slave chaotic device wherein an arbitrary variable signal of the first master chaotic device is added to at least one variable of the second master chaotic device, and an arbitrary variable signal of the first slave chaotic device which corresponds the arbitrary variable signal of the first slave chaotic device is added to at least one variable of the second slave device which corresponds to the variable of the second master device; and synchronizing ith chaotic system having ith master chaotic device and ith slave chaotic device wherein an arbitrary variable signal of i-lth master chaotic device is added to at least one variable of the ith master chaotic device, and an arbitrary variable signal of i-lth slave chaotic device which corresponds the arbitrary variable signal of i-lth master chaotic device is added to at least one variable of the ith slave chaotic device which corresponds to the variable of the ith master device where i equals 3 to N of number of the chaotic systems.