Patent ID: 7103786

Claim:
A power management method of portable computer is applied to portable computer through adjusting an operating frequency and voltage; this method comprises the following steps, detecting portable computer through a detection mechanism, the detection mechanism including a circuit to detect current supplied to a central processing unit (CPU) of the portable computer that includes: (a) a sense register coupled to a CPU power circuit for detecting an electric current load of the CPU and sending out an electric signal responsive thereto; (b) an amplifier coupled to the sense register to magnify a voltage drop between two ends of the sense register and transform the received electric current signal into a digital electric current signal through an Analog to Digital Converter (ADC); and (c) a keyboard controller coupled to the amplifier to verify a voltage level of the detection circuit, the voltage level being calculated subsequent to the electric current signal being received; compelling portable computer to enter a particular status; dynamically modifying a condition that is required by portable computer under a particular status; and enabling portable computer to check out of the particular status.