Patent ID: 9274623
Filing Date: 2016-03-01
CPC Classification: G06F

Claim Text:
1. A position information input system comprising: a signal generating device formed to have a pen shape, and configured to generate an ultrasonic signal and a reference signal; and a signal receiving device configured to generate position information by measuring a position of the signal generating device by receiving the ultrasonic signal and the reference signal from the signal generating device, or configured to generate position measuring information used to measure a position of the signal generating device by receiving the ultrasonic signal and the reference signal from the signal generating device, and to transmit the position information or the position measuring information to an external electronic device, wherein a coupling unit, configured to couple the signal generating device to the signal receiving device, is formed at a housing of the signal receiving device, wherein a contact power switch is installed on a surface of the housing in correspondence to the signal generating device, wherein the contact power switch is turned on or off by contacting the signal generating device, to turn on or off the signal receiving device, wherein a first charging terminal is installed at the signal generating device, wherein a second charging terminal is installed at the housing, so as to contact the first charging terminal in a coupled state between the signal generating device and the signal receiving device, wherein a second charging power source connection unit, configured to connect an external charging power source to the second charging terminal, is installed at the signal receiving device, and wherein the external charging power source, connected to the second charging power source connection unit, simultaneously charges the signal receiving device and the signal generating device in a connected state between the first charging terminal and the second charging terminal.