Invention Grant
US07791469B2 Short range wireless tracking and event notification system for portable devices
有权
便携式设备的短距离无线跟踪和事件通知系统
- Patent Title: Short range wireless tracking and event notification system for portable devices
- Patent Title (中): 便携式设备的短距离无线跟踪和事件通知系统
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Application No.: US11546635Application Date: 2006-10-11
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Publication No.: US07791469B2Publication Date: 2010-09-07
- Inventor: Jiwei Chen , James Lam
- Applicant: Jiwei Chen , James Lam
- Applicant Address: KY Grand Cayman
- Assignee: O2Micro International Limited
- Current Assignee: O2Micro International Limited
- Current Assignee Address: KY Grand Cayman
- Main IPC: G08B1/08
- IPC: G08B1/08
Abstract:
A method and system for tracking a portable device. A tracking system includes a portable device, a first Radio Frequency (RF) module, and a second RF module. The first Radio Frequency (RF) module is installed in the portable device for transmitting a wireless signal. The second RF module is used for receiving the wireless signal. When a received amplitude of the wireless signal that is received by the second RF module is less than a predetermined value, the second RF module generates an alert.
Public/Granted literature
- US20070080824A1 Short range wireless tracking and event notification system for portable devices Public/Granted day:2007-04-12
Information query
