Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With time interval measuring means
Patent
1998-12-10
2000-08-22
Lobo, Ian J.
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
With time interval measuring means
367907, 345148, G01S 3808
Patent
active
061082716
ABSTRACT:
The present invention is generally directed to a method of remotely controlling electronic devices by using the change in time required for sound waves to travel from an emitter to a detector. The time needed for emitted sound waves to reach a detector depends on the distance from the emitter to the detector. The present invention uses a system which measures the time between emission and detection of two or more successive sound pulses or sound waves. The change in time for sound waves to travel the distance from the emitter (or emitters) to the detector (or detectors) is determined and then used for controlling electronic devices. The sound waves are produced by a sound generator, and the detector is designed specifically for the detection of sound waves. In certain embodiments, ultrasonic sound waves or pulses are produced by the sound generator and are used to control an electronic device such as a computer cursor or vehicle.
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Erskine College
Lobo Ian J.
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