Apparatus supporting active and passive telecommunication, and control method thereof
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United States of America Patent
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Apr 28, 2009
Grant Date -
Jun 30, 2005
app pub date -
Dec 27, 2004
filing date -
Dec 27, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is an apparatus using a battery and a passive device, and a communication method thereof. In the wireless communication system, a coordinator has an active communication device for supporting active communication, and a passive device for supporting passive communication to wirelessly transmit power to a communication device. The communication device includes a memory and a passive communication device using the power received from the coordinator in a wireless manner in the active communication device operated with the battery, and stays in a passive communication idle state during a period allowing passive communication. The operation of the passive communication device is transmitted to the active communication device via an interrupt device so as to cause an active/passive communication state transition depending on the communication state.
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