发明名称 |
Wireless communications devices, wireless communications systems, and methods of performing wireless communications with a portable device |
摘要 |
In one aspect, a method of wireless communications includes: storing identification information of a portable wireless communications device in memory coupled to a processing unit of the portable wireless communications device; determining a current location of the wireless communications device using a global positioning system (GPS); performing wireless communications with a cellular communications system using a cellular receiver controlled by the processing unit; generating a random number using an identification device controlled by the processing unit; and modulating a carrier provided from an interrogator wirelessly coupled to the identification device to provide the identification information, including the random number.
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申请公布号 |
US7920047(B2) |
申请公布日期 |
2011.04.05 |
申请号 |
US20070890051 |
申请日期 |
2007.08.03 |
申请人 |
ROUND ROCK RESEARCH, LLC |
发明人 |
BATES BENJAMIN G. |
分类号 |
H04B1/38;G07C5/00;G07C9/00 |
主分类号 |
H04B1/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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