IDENTIFICATION SYSTEM WITH QUERYING UNIT AND MULTIPLE RESPONDING UNITS, RESPONDER OF IDENTIFICATION SYSTEM Russian patent published in 2000 - IPC

FIELD: radio engineering. SUBSTANCE: querying unit has transmitter for transmission of query signal to responding unit, receiver for reception of response signal from responding unit, and processor for identification of responder using data from response signal. In addition device has clock frequency detection unit for reading clock signal of responder from response signal in order to provide synchronization of query signal modification to response signal from responding unit. Each responding unit has receiver for reception of query signal, clock oscillator of responding unit, code generator, transmitter and modulator, which is connected to code generator in order to output response signal after reception of query signal. Responding unit transmits output signal with data for its identification. Querying unit is designed for demodulation of successful reception of response signal from any responding in order to detect synchronization signal from response signal of respective responding unit and modify query signal synchronously with response signal in order to acknowledge successful reception of response signal. Each responding unit also has unit, which is sensitive to respective modification of query signal for breaking transmission of its response signal. EFFECT: increased reliability of identification of responding unit. 20 cl, 10 dwg