Mobile device and power management method

摘要

A mobile device and related power management method are disclosed. The power management method includes detecting a level of residual battery power, and selectively enabling the provision of power to the smart card and the RF chip in accordance with the detected level of residual battery power.

主权项

1. A mobile electronic device, comprising:
a battery; a radio frequency communication chip (RF chip) performing wireless communication with an external terminal; a smart card connected to the RF chip and communicating data with the terminal; a controller including a residual battery power detector that detects a level of residual battery power and provides a switching signal in response to the detected residual battery power; and a switching circuit that supplies or halts the supply of power from the battery to both the RF chip and the smart card in response to the switching signal.