Patent Number: 6,486,871

Title: Pointing device with Z-axis functionality and reduced component count

Abstract: Apparatus and method are disclosed for receiving human input by means of a pointing device, typically a strain gauge. Three dimensions of input are received from a resistor bridge by means of four contact points to the strain gauge. A sequence of excitation signals is applied to the bridge and a multiplexer is employed to permit a signal processor to sample sensor outputs. The apparatus processes the sampled outputs and determines the user inputs such as X and Y and Z values of the pointing device.

Inventors: Marten; Victor (Flushing, NY)

Assignee: Semtech Corporation

International Classification: G06F 3/033 (20060101); G06F 1/32 (20060101); H02J 7/00 (20060101); G05G 9/047 (20060101); G05G 9/00 (20060101); H03L 3/00 (20060101); H03M 1/82 (20060101); G09G 005/08 ()

Expiration Date: 11/26/2019