Patent ID: 11972068
Assignee: APPLE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A stylus comprising:
a control board;
a ring-field generator;
a ring signal line operatively connecting the ring-field generator to the control board, wherein a diameter of the ring-field generator is greater than a diameter of the ring signal line;
a tip-field generator;
a tip signal line extending through the ring-field generator and operatively connecting the tip-field generator to the control board, the tip signal line being electrically isolated from the ring signal line;
a ground ring, wherein the tip signal line extends through the ground ring; and
a ground signal line extending through the ring-field generator and disposed between the ring signal line and the tip signal line and operatively connecting the ground ring to the control board, the ground signal line being configured to provide electromagnetic shielding between the tip signal line and the ring signal line, wherein a diameter of the ground ring is greater than a diameter of the ground signal line.