Invention Grant
- Patent Title: Localizing a tag using variable signal range
- Patent Title (中): 使用可变信号范围来定位标签
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Application No.: US11756697Application Date: 2007-06-01
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Publication No.: US08044804B1Publication Date: 2011-10-25
- Inventor: Alan A. McReynolds
- Applicant: Alan A. McReynolds
- Applicant Address: US TX Houston
- Assignee: Hewlett-Packard Development Company, L. P.
- Current Assignee: Hewlett-Packard Development Company, L. P.
- Current Assignee Address: US TX Houston
- Main IPC: G08B13/14
- IPC: G08B13/14
Abstract:
A method for localizing a tag includes activating an antenna to transmit an RF signal and monitoring for a responsive signal transmitted by the tag. The signal range of the RF signal transmitted by the antenna may be altered if a responsive signal from the tag is not received. The method further includes detecting the responsive signal transmitted by the tag after the tag receives the RF signal transmitted at the altered signal range.
Information query
