发明名称 |
Integrated circuits with persistent data storage |
摘要 |
The circuitry introduced in this invention selectively slows down the functioning of an electronic circuit by maintaining a particular state for a prolonged period of time. This circuitry is used not only to achieve the desired effect in maintaining security from electronic thieves trying to circumvent codes but also in other applications such as enabling a circuit to continue to function in the event of a brief loss of power. For example, in an RFID system, if a reader is frequency hopping, a tag loses power for as long as about 400 milliseconds when the reader changes to other frequencies. In a preferred embodiment, the disclosed circuitry is used in conjunction with a destruct sequence.
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申请公布号 |
US7364084(B2) |
申请公布日期 |
2008.04.29 |
申请号 |
US20050153030 |
申请日期 |
2005.06.14 |
申请人 |
ALIEN TECHNOLOGY CORPORATION |
发明人 |
STEWART ROGER G.;ROLIN JOHN |
分类号 |
G06K19/00;G06K19/07;G06K19/073;G11C17/00 |
主分类号 |
G06K19/00 |
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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