Patent ID: 8674967
Filing Date: 2014-03-18
Classification: G01D,G06F,H01F,H01G

Abstract:
1. A digitizer device, comprising: a position indicator, including: a housing; an elongated magnetic core disposed in said housing, said magnetic core having an elongated hole extending therethrough, and said magnetic core comprising a composition of soft magnetic metal powder mixed with a binder resin; a core stem extending through said elongated hole, said core stem having a pen tip extending from said magnetic core at a first end and a conductive elastic member extending from said magnetic core at a second end opposite to said first end, and said core stem being movable with respect to said housing; a resonant coil wound around said magnetic core for electromagnetic communication; and a variable capacitance operably associated with said conductive elastic member, said variable capacitance comprising a dielectric element, a first electrode disposed on a first surface of said dielectric element, and a second electrode disposed on a second surface of said dielectric element opposite to said first electrode, wherein said elastic conductive member changes an area of the variable capacitance when forced into contact with said dielectric element.