| 摘要 |
<p>A Hybrid Tag Device, a Hybrid Tag Protocol, a Methodology and a Hybrid System for tracking assets is disclosed. The Hybrid Tag Device comprises a Beacon Transmitter that transmits a narrow band signal, such as a UHF signal, and a wide band transmitter that transmits a wide band signal that is used to determine a distance from the Hybrid Tag Device to a Hybrid Tag Reader. The Hybrid Tag Device may also comprise a wide band signal receiver to receive a wide band signal transmitted by the Hybrid Tag Reader, which in response thereto transmits the wide band signal. In addition, the Hybrid System may comprise a sign post device that transmits an interrogation signal to the Hybrid Tag Device to enable the Hybrid Tag Device to transmit the narrow band signal.</p> |
