Automatic control of computer standby state by predictive algorithm in computer usage

The number of mobile devices such as smart phones, tablet PCs, e-book readers and laptop computers is increasing. It is important for longer battery life and green energy to reduce power consumption when those devices are in running state. What is also important is to reduce standby power, because those devices stay in standby state for a longer period of time than in running state and the power consumption in standby state is far from negligible. This paper discusses the software algorithm on laptop computers which learns how and when a laptop computer is placed into standby state and is resumed by a user, predicts when a user will resume the computer, and automatically changes the depth of the standby state to reduce the power consumption without resume performance degradation. This method is implemented in “TinkPad” that is a brand of laptop computers developed by Lenovo.