The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 16, 2008
Filed:
Jul. 25, 2005
Andrew Martin Robert Ward, Cambridge, GB;
Paul Michael Webster, Cambridge, GB;
Rupert William Meldrum Curwen, Hertfordshire, GB;
Peter Joseph Steggles, Cambridge, GB;
Andrew Martin Robert Ward, Cambridge, GB;
Paul Michael Webster, Cambridge, GB;
Rupert William Meldrum Curwen, Hertfordshire, GB;
Peter Joseph Steggles, Cambridge, GB;
Ubisense Limited, Cambridge, GB;
Abstract
A system for monitoring the presence of persons within a zone, the system comprising: one or more remotely detectable markers, each capable of being carried by a person; a first sensor arrangement capable of identifying the presence of the body of at least one person within the zone; a second sensor arrangement capable of identifying the presence of at least one marker within the zone; and a processing arrangement responsive to the first sensor arrangement and the second sensor arrangement to generate an alarm signal if the first sensor arrangement identifies the presence of a body without the second sensor arrangement identifying a marker corresponding in a first predetermined manner to that body.