Patent ID: 9153983
Filing Date: 2015-10-06
Classification: H01R,H02J

Abstract:
1. A charging device comprising: a first connector configured to be connected to a power source; a second connector configured to be connected to and supply a voltage to the electronic device; a magnetic element configured to be connected to a magnet of an electronic device; a magnetic sensor configured to detect a magnetic force generated by the magnet of the electronic device, wherein the magnetic sensor comprises a first magnetic sensor configured to detect a first magnetic polarity; a second magnetic sensor configured to detect a second magnetic polarity that is different from the first magnetic polarity; a third magnetic sensor configured to detect the second magnetic polarity; a fourth magnetic sensor configured to detect the first magnetic polarity; a first logic circuit connected to the first magnetic sensor and the second magnetic sensor; and a second logic circuit connected to the third magnetic sensor and the fourth magnetic sensor; and a switch circuit disposed between the first connector and the second connector and configured to control the polarity of the voltage supplied to the electronic device from the second connector to be a first polarity when an output of the first logic circuit indicates that a magnetic force of the first polarity is detected at the first magnetic sensor and a magnetic force of the second polarity is detected at the second magnetic sensor and control the polarity of the voltage supplied to the electronic device from the second connector to be a second polarity, which is opposite the first polarity, when an output of the second logic circuit indicates that a magnetic force of the second polarity is detected at the third magnetic sensor and a magnetic force of the first polarity is detected at the fourth magnetic sensor.