Patent ID: 8392032

Claim:
A method adapted to heat a target device of a computer system by a heater from an initial device temperature to a target temperature through a plural number of temperature intervals, the method comprising the steps of: (a) obtaining a preset temperature rising value; (b) determining a current preset interval temperature, beginning with the initial device temperature; (c) sensing the current device temperature of the target device; (d) comparing the current device temperature of the target device and the current preset interval temperature of the current temperature interval to obtain a phase difference; (e) adjusting a heating power of the heater applied to the target device according to the phase difference; (f) heating the target device by the adjusted heating power; (g) increasing progressively the current preset interval temperature of the current temperature interval by the preset temperature rising value to obtain the next preset interval temperature of the next temperature interval; and (h) repeating from the step (b) to the step (g) until the preset interval temperature reaching the target temperature; wherein the temperature rising value is obtained by subtracting the initial device temperature from the target temperature and dividing the results by the number of temperature intervals; wherein in step (d), the phase difference is obtained from the current device temperature minus the preset interval temperature; and wherein in step (e) the heating power applied to the target device is adjusted through Pulse Width Modulation.