| 主权项 |
1. A touch-sensor device stylus, comprising:
a body having a first end and a second end; a piece of electret material coupled to the first end of the body, wherein the piece of electret material emits a first field to be sensed by a capacitive touch-sensor device by measuring an effect of the first field emitted by the piece of electret material on a second field emitted by the capacitive touch-sensor device, wherein the effect of the first field is determined by comparing a combined field that is formed by an interference of the first field emitted by the piece of electret material with the second field emitted by the capacitive touch-sensor device to the second field, wherein the effect of the first field is used to determine a position of the touch-sensor device stylus, and wherein the piece of electret material comprises a metal core in the piece of electret material that is associated with a direction of the first field, and wherein the piece of electret material further comprises a metal probe that is coupled to the metal core and extends out of the piece of electret material to couple the piece of electret material to the body of the touch-sensor device stylus; and a socket to receive the first end of the body, wherein an interior surface of the socket is lined with a conductive material to contact a surface of the piece of electret material to short the surface of the piece of electret material emitting the first field when the first end of the body is inserted into the socket. |
