ADDRESS METHOD OF DETECTING IDENTIFICATION FEATURES IN INFORMATION STREAMS Russian patent published in 2011 - IPC G06F17/30 

FIELD: information technology.

SUBSTANCE: to create a base of reference information features, a set of N_i reference information features is selected, symbols contained in said features and which are different from each other are selected and then used to form an alphabet of symbols, the number of symbols contained in the alphabet is calculated, the volume of the base of reference information features is calculated, for the i-th reference feature, the number mi of symbols which form it and its morphologic coefficient di are calculated, the address of the reference information feature A_i=f(d_i) is calculated using a hash function, the morphologic coefficient is cut and a secondary hash function is calculated therefrom, the obtained compact binary presentation of the information feature is recorded in the base of reference information features on the address A_i, to extract information features from each fragment of the received information stream, a group of binary characters lying between two spaces is selected and then decoded to the type of information feature, its morphologic coefficient and address are calculated, the obtained morphologic coefficient is compared with the morphologic coefficient stores on a similar address in the base of reference information features, presence or absence of identification features to be detected in each fragment of the information stream is determined.

EFFECT: reduction of the amount of memory for storing reference information features.

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