Source: http://www.google.com/patents/US7760677?dq=6246862
Timestamp: 2014-08-29 21:07:43
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Matched Legal Cases: ['art 3', 'art 4', 'art 1', 'art 2', 'art 3', 'art 4', 'art 1', 'art 2', 'art 1', 'art 1', 'art 3', 'art 3', 'art 3', 'art 2', 'art 3', 'art 3', 'art 3', 'art 2', 'art 3', 'art 3']

Patent US7760677 - Method of addressing messages and communications system - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsIn one among many embodiments, the invention provides a system including an interrogator communicating to a selected one or more of a number of communications devices. A plurality of communications devices select random values independently of random values selected by other devices. The interrogator...http://www.google.com/patents/US7760677?utm_source=gb-gplus-sharePatent US7760677 - Method of addressing messages and communications systemAdvanced Patent SearchPublication numberUS7760677 B2Publication typeGrantApplication numberUS 11/143,395Publication dateJul 20, 2010Filing dateJun 1, 2005Priority dateFeb 19, 1998Fee statusPaidAlso published asDE69938655D1, EP1072128A1, EP1072128B1, US6275476, US7315522, US7639638, US7672260, US7936706, US8040829, US8488581, US8634338, US8638709, US20010014090, US20050207364, US20060056325, US20060209781, US20080007412, US20080042806, US20090322491, US20120265584, US20120271683, US20130073348, WO1999043127A1Publication number11143395, 143395, US 7760677 B2, US 7760677B2, US-B2-7760677, US7760677 B2, US7760677B2InventorsClifton W. Wood, Jr.Original AssigneeKeystone Technology Solutions, LlcExport CitationBiBTeX, EndNote, RefManPatent Citations (99), Non-Patent Citations (83), Referenced by (2), Classifications (26), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetMethod of addressing messages and communications systemUS 7760677 B2Abstract In one among many embodiments, the invention provides a system including an interrogator communicating to a selected one or more of a number of communications devices. A plurality of communications devices select random values independently of random values selected by other devices. The interrogator transmits a first signal requesting devices within a specified group of devices to respond, the specified group being less than or equal to all of the devices within a field of the interrogator. Devices receiving the first signal respectively determine if the respective device falls within the specified group and, if so, send a reply including a respective random value to the interrogator within a randomly selected time slot of a number of slots; and, if not, do not send a reply. The interrogator determines if a collision occurred between devices that sent a reply. The interrogator also creates a new, different specified group.
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No. 11/865,584, filed Oct. 1, 2007.83Wright, Jim, "Trends and Innovations in RF Identification", SUN Microsystems, Inc., (presentation); 30 pp. (Mar. 2005).Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8786408 *Jan 4, 2010Jul 22, 2014Mstar Semiconductor, Inc.Method for searching a plurality of RFID tags and apparatusUS20100171599 *Jan 4, 2010Jul 8, 2010Mstar Semiconductor, Inc.Method for searching a plurality of rfid tags and apparatus thereof* Cited by examinerClassifications U.S. Classification370/312, 340/10.1, 370/445, 370/346, 345/42International ClassificationH04L12/413, H04J3/16, H04L12/56, H04B7/00, G06K7/00Cooperative ClassificationH04W40/246, H04W76/021, H04W8/26, H04W74/08, G06K7/0008, H04L29/1232, G06K7/10019, H04W24/00, H04L61/2092, H04W74/06European ClassificationG06K7/10A1, H04L29/12A3I, H04L61/20I, H04W74/06, G06K7/00E, H04W76/02ALegal EventsDateCodeEventDescriptionDec 27, 2013FPAYFee paymentYear of fee payment: 4Jan 26, 2010ASAssignmentOwner 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