COORDINATE INDICATING APPARATUS AND COORDINATE MEASURING APPARATURS WHICH MEASURES INPUT POSITION OF COORDINATE INDICATING APPARATUS

摘要

Disclosed are a coordinate displaying device and a coordinate measuring system which comprises a coordinate measuring device for determining the position of a touched object including the coordinate displaying device. The coordinate measuring device comprises a channel electrode unit and a control unit. The channel electrode unit includes one or more electrodes and changes the capacitance of the electrodes based on the position change of the touched object. The control unit applies electrical signals to the channel electrode unit or measures receiving signals inputted to the channel electrode unit. The coordinate displaying device comprises a conductive tip for forming the capacitance with one or more electrodes, and a resonance circuit unit for outputting a set of coordinate displaying device identification information by connecting the conductive tip. The control unit determines an inputted position of the touched object based on the change of the capacitance and distinguishes the kinds of the touched object based on the frequency response of a receiving signal. [Reference numerals] (220) Control unit;(230) Separate receiving unit