METHOD FOR CORRECTING TIME OF PERIPHERAL BOARD BY DIVIDING DIFFERENCE FROM REFERENCE TIME MANY TIMES IN CONSIDERATION OF SYSTEM ELAPSE TIME

摘要

PURPOSE: A gradual time correction method considering system elapse time is provided to correct accurately a system time and stably perform a call process by performing gradually a time correction process many times. CONSTITUTION: Reference clock information is received from a reference clock board(100). An interval count is calculated and a code of a gage is determined(110). Base time information and current time information are obtained(120). A system time is corrected by adding a correction unit time to the system time(130). An elapse time gap between a real elapse time and a calculation elapse time is obtained(180). A correction number is controlled by using the elapse time gap(190-210).