DEVICE FOR PHASE SYNCHRONIZATION Russian patent published in 1998 - IPC

FIELD: communication. SUBSTANCE: device provides synchronization for reception of digital information and is based on direct automatic phase tuning without alternation of heterodyne frequency. Device has multiple-phase reference oscillator, which outputs are connected to information inputs of multiplexer. Goal of invention is achieved by introduced adder-subtracter, adder, bit-by-bit shift register, two memory registers. One memory register has encoder and is reads phase of input signals. Second memory register serves as digital filter together with adder-subtracter and bit-by-bit shift register. Current phase error is detected by adder operating in complementary code. EFFECT: increased bandwidth of synchronization, increased speed of initiating synchronization, increased dynamic precision of synchronization. 1 dwg