AUTHORIZATION CHECK METHOD AND CIRCUIT THEREOF Russian patent published in 2003 - IPC

FIELD: data exchange devices incorporating authorization provision. SUBSTANCE: check data are generated in each of two data exchange devices around starting signal and transferred from one data exchange device to other; data obtained are compared with check data of data exchange device that has received these data and decision is taken to authorize data exchange basing on comparison results; one of two data exchange devices specifies one common time step and informs other device that it has taken control functions. Circuit implementing this method has data exchange devices, starting signal supply device, interface for data receiving and transmitting, and data processing device incorporating comparator. EFFECT: enhanced obstruction in keyword detection. 8 cl, 5 dwg