Patent ID: 6470197
Filing Date: 2002-10-22
Classification: H04M

Abstract:
A headset control system for operating a microcontroller based device comprising;a) a microphone; b) a first and a second speaker; c) a user operated switch for selectively activating said microphone in a first state or deactivating said microphone in a second state; d) a resiliently biased momentary switching means for creating patterns of momentary switching from a rest position to at least one depressed position and back; e) a switch detector comprising plurality of comparators to implement threshold logic with more than two logic levels, producing a signal indicating the respective states of said user operated switch and said momentary switching means; and f) a control means responsive to said switch detector including a means to differentiate between different switching patterns of said momentary switching means for initiating respective function as a function of a pattern of momentary switching and state of said user-operated switch and current operational mode.