Direction device and operation system utilizing the same
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United States of America Patent
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Jul 28, 2015
Grant Date -
Dec 1, 2011
app pub date -
Mar 9, 2011
filing date -
May 25, 2010
priority date (Note) -
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Abstract
A direction device controlling a traveling route of a cleaning robot and including a receiving unit, an emitting unit and a control unit is disclosed. The receiving unit receives an encoded ultrasonic wave emitted by the cleaning robot. The emitting unit emits at least one wireless signal. The control unit activates the emitting unit to emit a first direction wireless signal when the receiving unit receives the encoded ultrasonic wave. The cleaning robot passes according to the first direction wireless signal.
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