Patent ID: 7834858
Filing Date: 2010-11-16
Classification: G06F

Abstract:
1. A computer input device comprising: a body including a cavity; a trace-detecting module slidably positioned in said cavity such that trace-detecting module is movable relative to the body from a neutral position to a depressed position against a bias provided by a resilient element that is connected to the trace-detecting module, the trace-detecting module including a light pervious element, a light source, and a light sensor that are fixed within said trace-detecting module and movable with the trace-detecting element relative to the body and a microswitch; wherein the trace-detecting module generates a first control signal upon detecting movement of a user's finger across the light pervious element, wherein the trace-detecting module is arranged to be moved by the user's finger from said neutral position to said depressed position, the light pervious element, light source, and light sensor all being depressed with the trace-detecting module, the microswitch generating a second control signal when the trace-detecting module is moved to said depressed position.