SHORT RANGE RF MONITORING SYSTEM
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Accused Products
Abstract
A wireless short range radio-frequency master device adapted to create and maintain a portable private network of wireless short range radio-frequency slave devices wherein the master device is configured to detect and register suitable slave devices for a network, and is capable of determining the proximity of any registered slave device with respect to the master device in use, the master device further being adapted to enable a user to define two or more groups of registered slave devices selected from the total number of registered slave devices and to enable a user to select a defined group of such registered slave devices as an active group, thereby forming an active portable private network of wireless short range radio frequency devices comprising the master device and selected registered slave devices within the selected group.
48 Citations
28 Claims
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1-21. -21. (canceled)
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22. A wireless short range radio-frequency master device configured to assess the strength of the radio signal between the master device and one or more slave devices at a plurality of orientations, thereby enabling a determination of a relative position of the one or more slave devices with respect to the master device based on a relative signal strength at different orientations.
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23. A method for determining a bearing of one or more wireless short range radio-frequency slave devices with respect to a master device, the method comprising:
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assessing the strength of the radio signal between a master device and one or more slave devices at an initial orientation; rotating the master device to one or more secondary orientations with respect to the initial orientation and assessment of a strength of a radio signal between the master device and one or more slave devices at each of the one or more secondary orientations; and determining the bearing of the one or more slave devices based on a comparison of radio signal strengths at the initial and secondary orientations. - View Dependent Claims (24, 25, 26, 28)
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27. A system for the creation of and maintaining of a portable private network of wireless short range radio-frequency devices comprising a master device and one or more slave devices that are enabled to form a portable private network when activated by the master device, wherein the master device is configured to
assess a strength of a radio signal between the master device and one or more slave devices at a plurality of orientations, and determine a relative position of the one or more slave devices with respect to the master device based on a comparison of the signal strengths at different orientations.
Specification