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 an X-Y coordinate stylus location. The second location measurement technique provides a Z coordinate 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, and wherein the first stylus location measurement technique determines an X-Y coordinate position, and the second stylus location measurement technique determines a Z coordinate position.