Method of portable computer power management using keyboard controller in detection circuit
AssigneeUniwill Computer Corp.
InventorsChih-Hsien Chen, Chi-Cheng Kuo, John Chien, Chien-Yeh Chen
Life of this patent
Estimating the term…
Abstract
The present invention relates to a power management method of portable computer and detects the electric power consumption of portable computer through a detection circuit during the operation of portable computer, in addition, dynamically changes any one of the followings: the voltage and frequency of portable computer CPU, the frequency and efficacy of Video Graphics Array (VGA), or the frequency of memory. What is more, the invention provides a plurality of power management modes of portable computer for achieving the object of managing electric power consumption of portable computer.
Claims16
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.
Dependencies are inferred from the claim text.