Patent ID: 8261106
Filing Date: 2012-09-04
Classification: G06F,H04M,H04W,Y02D

Abstract:
1. A portable electronic device, comprising: a main power supply; a power management unit (PMU) connected to the main power supply, through which the main power supply provides electric power to the portable electronic device; and a receiver unit connected to the PMU, the receiver unit including a processor module connected to the PMU; a subsidiary power supply; a central processing unit (CPU); and a first switch unit connected to the CPU; wherein both the main power supply and the subsidiary power supply are connected to the receiver unit by the first switch unit, and the CPU directs the first switch unit to select either the main power supply or the subsidiary power supply to supply electric power to the receiver unit; and wherein the processor module stores a lock code, and the processor module directs the PMU to prevent the main power supply from providing electric power to the portable electronic device when the receiver unit receives wireless signals corresponding to the lock code.