Patent ID: 6239720
Filing Date: 2001-05-29
Classification: H04W

Abstract:
In a paging system having a plurality of transmitters each having a respective transmission delay, a plurality of delay compensation circuits each associated with a transmitter and each for individually compensating for the respective transmission delay of each transmitter to provide simultaneous transmission of page data among the plurality of transmitters by using a reference clock signal from a global positioning system (GPS) receiver, each delay compensation circuit comprising:a data bus;a latch, connected to said data bus and responsive to a latch input signal, for receiving a signal from said data bus;a counter/controller, connected to said data bus and responsive to a reference clock signal received from said GPS receiver (1PPS), for counting a series of pulses of a counter reference clock signal and generating a counter output signal in response thereto, whereby said counter/controller begins counting said pulses of said counter reference clock signal in response to said 1PPS signal; anda comparator, connected to said latch and said counter/controller, for receiving said data bus signal from said latch and for generating a delayed 1PPS signal (1PPS') in response to said data bus signal received from said latch and said counter output signal from said counter/controller.