ELECTRONIC CHESS-CLOCK Russian patent published in 2009 - IPC G07C1/28 G04G3/00 A63F9/24 

FIELD: clocks.

SUBSTANCE: this invention refers to the sphere of the clock industry and can be used in electronic chess-clock used to control the time in chess game between distant competitors in the real life mode. Here the duplex radio system, compound signal with combined phase manipulation and amplitude modulation is used. Electronic chess-clock consists of power module, block of timing pulse formation, information procession block, clock switcher, mechanism for identification of the time of the competitors, communication line, information receipt and transfer block, mechanism for identification of another move of the distant competitor, block for verification of the distant competitor's move, block for setting the record regime for thinking over the moves of the competitors, video-transferring mechanism, mechanism for visual display of the distand competitor, mechanism for the record of the mistakes and failures, mechanism for the failure's indication, master clock, modulation code generator, phase-shift modulator, modulating function generator, amplitude modulator, first heterodyne, oscillator mixer, first intermediate frequency amplifier, first power amplifier, duplexer, transmitting-receiving antenna, second power amplifier, second heterodyne, second mixer, second intermediate frequency amplifier, amplitude limiter, synchronous detector, multiplier, band-pass filter and phase detector.

EFFECT: improvement of the interference immunity and accuracy of the receipt, processions and transmitting the information on the moves and the time for thinking.

2 dwg