SELECTIVE CALL DEVICE Russian patent published in 2007 - IPC H04Q1/30 H04Q5/18 

FIELD: communications engineering.

SUBSTANCE: selective call device contains supporting generator, frequency divider, control block, two dialing blocks, encoder, manipulator, position counter, two synchronization blocks, output and input coordination blocks, commutation block, outputs and inputs of channels, circular commutator, frequency demodulator, generator of impulses for call commands, decoder, even parity check block, block for comparing individual call code, individual call code counter, OR circuit, indication block, acoustic signaling device, synchronization divider, commutation channels inquiry block, inquiry impulses generator, block of circular call modulus two adders, block for comparing circular call code and counter of circular call code. In accordance to invention, additionally introduced to device are positions counter, output and input coordination blocks, commutation block, circular commutator, generator of call command impulses, even parity check block, block for comparing individual call code, individual call code counter, OR circuit, acoustic signaling device, second synchronization block, OR circuit, acoustic signaling device, second synchronization block, synchronization divider, communication channels inquiry block, inquiry impulses generator, block of circular call modulus two adders, block for comparing circular call code and counter of circular call code.

EFFECT: expanded functional capabilities, increased reliability of its operation.

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