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:
Jun. 16, 2015
Filed:
Mar. 28, 2012
Gideon Kaplan, Kiryat Ono, IL;
Avraham Menkes, Ramt Hasharon, IL;
Dan Raphaeli, Kfar Saba, IL;
Zebra Enterprise Solutions Corp., Lincolnshire, IL;
Abstract
A method for providing security and maintenance of a group of devices using a group of tags. Each of the tags is attached to a device and includes a radio frequency transceiver for intercommunicating using ultra-wide band signals. Using the intercommunication, distance between two of the tags is determined and an alarm is triggered when the distance is greater than a threshold distance. The distance is preferably determined by measuring a round trip delay time between the transmission of a transmitted unicast signal to the other tag and reception of a unicast response signal in response to the transmitted signal. A configuration mechanism is typically used for configuring the group and removed upon completing the configuration, and the tags maintain the group and provide security by the intercommunication between the tags. The tags are preferably synchronized to transmit and receive solely during a previously determined periodic sequence of time intervals.