Digitizer using multiple stylus sensing techniques

摘要

A digitizer system utilizing two location measurement techniques that operate in cooperation to improve the operation of the digitizer. The first location measurement technique provides a first, or coarse, stylus location. The second location measurement technique provides a second, or fine, stylus location.

主权项

1. A method of locating a stylus relative to a display having a matrix of addressable pixels, comprising:
determining a first location of the stylus relative to the display using a first stylus location measurement technique; determining a second location of the stylus relative to the display using a second stylus location measurement technique that is disparate from the first stylus location measurement technique: wherein the stylus includes electronic circuitry to enable at least one of the measurement techniques, wherein one of the first and second location techniques is a coarse measurement technique and the other of the first and second location techniques is a fine location measurement technique.