A real-time power conservation apparatus and method for portable computers employs a monitor to determine whether a CPU may rest based upon a real-time sampling of the CPU activity level and to activate a hardware selector to carry out the monitor's determination. If the monitor determines the CPU may...http://www.google.co.uk/patents/US6397340?utm_source=gb-gplus-sharePatent US6397340 - Real-time power conservation for electronic device having a processor