Remote control device for controlling electronic devices
First Claim
1. A method for supplying control signals to an electronic device comprising the steps of:
- emitting a first sound wave from a sound emitter located at a first position;
detecting said first sound wave by a sound detector located at a second position;
changing the relative distance between said sound emitter and said sound detector by moving either of said sound emitter or said sound detector to a third position;
emitting a second sound wave from said sound emitter after the passage of a standard time interval after emitting said first sound wave;
detecting said second sound wave by said sound detector;
determining the difference in time between said detecting of said first sound wave and said detecting of said second sound wave;
arriving at a value by subtracting said difference in time from said standard time interval;
using said value to generate control signals without the necessity for determining the absolute distance between said sound emitter and said sound detector or determining the absolute time required for said first and second sound waves to travel from said emitter to said detector; and
supplying said control signals to an electronic device.
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Accused Products
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.
21 Citations
20 Claims
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1. A method for supplying control signals to an electronic device comprising the steps of:
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emitting a first sound wave from a sound emitter located at a first position; detecting said first sound wave by a sound detector located at a second position; changing the relative distance between said sound emitter and said sound detector by moving either of said sound emitter or said sound detector to a third position; emitting a second sound wave from said sound emitter after the passage of a standard time interval after emitting said first sound wave; detecting said second sound wave by said sound detector; determining the difference in time between said detecting of said first sound wave and said detecting of said second sound wave; arriving at a value by subtracting said difference in time from said standard time interval; using said value to generate control signals without the necessity for determining the absolute distance between said sound emitter and said sound detector or determining the absolute time required for said first and second sound waves to travel from said emitter to said detector; and supplying said control signals to an electronic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification