Patent ID: 7290721

Claim:
A temperature measuring apparatus, for measuring the temperature of a housing of a computer system and the temperature around said housing to regulate the speed of a fan so as to precede the heat dissipating of said computer system, which comprises: a first temperature sensor, positioned around or on a CPU, for sensing the temperature of said CPU or around said CPU; a first A/D converter, coupled to said first temperature sensor, for converting the temperature sensed by said first temperature sensor into a first temperature value; at least one second temperature sensor, positioned at a certain position inside said housing, for sensing the temperature around said housing; at least one second A/D converter, each second A/D converter coupled to each said second temperature sensor respectively, for converting the temperature sensed by said second temperature sensor into a second temperature value; and a control circuit coupled to said first A/D converter and said second A/D converter respectively, choosing a suitable value to output a control signal for controlling said speed of said fan according to said first temperature value and second temperature value so as to precede the heat dissipating of said computer system, wherein said first temperature value further constitutes a first temperature curve, and said second temperature value further constitutes a second temperature curve, and said control circuit chooses said suitable value to output said control signal according to said first temperature curve and second temperature curve, and wherein said suitable value is the maximum value of said first temperature curve and second temperature curve.