Patent ID: 7716515

Claim:
A method for updating time of a BMC (Baseboard Management Controller), which is applied to a computer system comprising a motherboard electrically connected to said BMC, wherein said motherboard includes at least a RTC (Real-Time Clock), a management unit and a transmission channel disposed between said motherboard and said BMC, so as to enable said computer system to execute the following steps each time said management unit determines that a synchronous signal is obtained from said BMC: receiving a current time of said RTC by a BIOS (Basic Input/Output System) of said motherboard; receiving said current time from said BIOS by said management unit, wherein said management unit converts said current time into an update time in a format acceptable to said BMC according to a timestamp format; encapsulating said update time into a transmission signal and transmitting said transmission signal to said BMC by said management unit via said transmission channel; receiving said transmission signal by said BMC; and interpreting said transmission signal by said BMC to obtain said update time, which is used to update a current time of said BMC, so as to enable said current time of said BMC to be identical to said current time of said RTC.