Patent ID: 7205683
Filing Date: 2007-04-17
Classification: H04W,Y02D

Abstract:
1. A circuit for preventing unintentional power off of a mobile terminal, comprising: a power charge unit for receiving a first state signal representing a state of the mobile terminal from a main chip set of the mobile terminal, changing or maintaining a state of a second state signal, which represents a normal power off of the mobile terminal and an abnormal power off of the mobile terminal, according to the state of the first state signal, and outputting the second state signal for representing a power on state to the mobile terminal when electric power is re-applied to the mobile terminal in the state of the abnormal power off of the mobile terminal; an enable signal generator for generating a power-on enable signal by receiving the second state signal from the power charge unit; and a voltage control unit for supplying the electric power from the battery to the main chip set of the mobile terminal in response to the power-on enable signal from the enable power signal generator by controlling the electric power to be suitable for the mobile terminal, wherein the power charge unit comprises: a battery; and a JK flip-flop comprising a power supply end connected to the battery, a J end for receiving the first state signal, a K end for receiving an inverted signal of the first state signal, and a Q end for outputting an output signal as a second state signal.