发明名称 |
Digital receiver and method for receiving secure group data |
摘要 |
A method and radio receiver are provided for receiving and deciphering RF signals having encrypted data information relevant to the receiver environment. According to one aspect of the present invention, the receiver includes an input for receiving an RF signal having a data stream including a key selector and encrypted data including a message, and a demodulator for demodulating the data stream and outputting encrypted data including the message. The receiver further includes a data decryption circuit including memory for storing one or more groups of decryption keys based on a characteristic of the receiver environment. The data decryption circuit selects a decryption key based on the key selector and decrypts the message based on the selected decryption key.
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申请公布号 |
US7412058(B2) |
申请公布日期 |
2008.08.12 |
申请号 |
US20030391107 |
申请日期 |
2003.03.18 |
申请人 |
DELPHI TECHNOLOGIES, INC. |
发明人 |
WALKER GLENN A.;DOCKEMEYER, JR. J. ROBERT |
分类号 |
H04L9/12;H04H40/90;H04H60/23;H04L9/06;H04L9/08 |
主分类号 |
H04L9/12 |
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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