Patent ID: 8055801
Filing Date: 2011-11-08
Classification: G06F

Abstract:
1. A method of synchronizing time in computer systems that utilize Server Time Protocol, comprising: establishing a time of day clock; receiving at a first port at least first time information using first time protocol; receiving at a second port at least second time information using a second time protocol; receiving at a third port at least a timing signal; capturing at a time stamp register at least current value of the time of day clock upon receipt of the timing signal from the third port or the first time information from the first port or combination thereof; monitoring and controlling at a server time protocol engine the timing in a server time protocol network; controlling at the server time protocol engine whether the time of day clock is in external time reference stepping mode or local stepping mode; and determining at the server time protocol engine physical clock value when a pulse-per-second signal arrives by reading information at least from the time stamp register.