Real time clock synchronization

专利名称：Real time clock synchronization发明人：David L. Kirk,Robert L. Spiesman申请号：US06/6826申请日：19841217公开号：US04583865A公开日：19860422

摘要：A method of synchronizing a digital timer with the frequency of a source of A.C.power to provide long term temporal stability. The timer produces internal, fineresolution, synchronization and real time timing signals from a source of clock signals.The periods of all the timer produced timing signals are integral multiples of the periodof its internal timing signal.

A.C. reference timing signals which are a function of the frequency of the source ofA.C. power are applied to the timer. The quotient of the period of the synchronizationtiming signals by that of the A.C. reference timing signals is an integer \"n\". Once n isdetermined, the number of fine resolution timing signals in each synchronization periodfor every n.sup.th A.C. timing signal is compared with a reference value. The timing of thefine resolution timing signals is adjusted to maintain the number of fine resolution timingsignals in each synchronization period at which the n.sup.th A.C. reference timing signal isproduced substantially equal to the reference value.

申请人：HONEYWELL INC

代理人：A. A. Sapelli,J. S. Solakian,A. Medved

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