REAL TIME TIMER SETTING DEVICE

摘要

PURPOSE:To accurately set up a real time timer value even in travelling by comparing real time timer values stored in the 1st and 2nd real time timer registers with each other and setting up respective values so that these values are equal to each other. CONSTITUTION:Real time timer values stored in both the real time timer registers 11, 5 included in a control device 7 are compared with each other by a comparator 17. A difference between both the values is supplied to a timer updating interval changing circuit 15, and when the real time timer value of the register 11 is larger than that of the register 5, the updating interval of timer updating interval signals supplied to these registers through the circuit 15 is increased. Thereby, time reverse or time jump which may be generated in a conventional device can be suppressed even in travelling and a real time timer value can be accurately set up.