Importance

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Abstract

An air mouse system is described. The air mouse is configured to periodically transmit RF signals in order to trigger a plurality of ultrasonic transmitters arranged on a television. The ultrasonic transmitters transmit ultrasonic signals when being triggered by the RF signals from the RF trigger. An ultrasonic receiver receives the ultrasonic signals. A processor calculates a location of the air mouse with respect to the ultrasonic transmitters based on time differences of the ultrasonic signals transmitted by the ultrasonic transmitters arriving at the ultrasonic receiver. A series of locations of the air mouse forms a motion trail of the air mouse and the air mouse transmits the motion trail to the television wirelessly. The motion trail is projected as a cursor trail on the television screen by the television, to control the cursor on the television screen by virtue of the motion of the air mouse.

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First Claim