Patent ID: 7623120
Filing Date: 2009-11-24
Classification: G06F

Abstract:
1. A wireless and passive tableting apparatus for computer inputting comprising a tablet and a pen, characterized in that nothing wires the pen and the tablet and no battery is in the pen; the tablet which can sense pressure from the pen comprises the pen comprises a parallel resonant circuit composed of capacitors and inductors; the connection relations between them are as follows: the connection relations of the amplifying circuit in the tablet are as follows: a (RX+) terminal for receiving signals connects with ends of first and second parallel resistors (R a grounding pin ( the other end of the first resistor (R the other end of the fifth resistor (R the other end of the fourth resistor (R the other end of the sixth resistor (R the other end of the seventh resistor (R the other end of the eighth resistor (R the other end of the ninth resistor (R the other end of the tenth resistor (R the other end of the eleventh resistor (R the other end of the twelfth resistor (R a ninth pin ( the other end of the thirteenth resistor (R an output pin ( the other end of the fourteenth resistor (R the other end of the fifteenth resistor (R a tenth pin ( the other end of the fourth capacitor (C