DETERMINING A LOCATION BASED ON RADIO FREQUENCY IDENTIFICATION (RFID) READ EVENTS

    公开(公告)号:US20170364720A1

    公开(公告)日:2017-12-21

    申请号:US15634659

    申请日:2017-06-27

    Abstract: Techniques for determining an item location based on multiple RFID parameters from multiple read events are described. In an example, a computer system may access a first read event. A first RFID reader located within a first zone may have generated the first read event at a first time. The first read event may identify an RFID tag and may include first RFID parameters. The computer system may access a second read event. A second RFID reader located within a second zone may have generated the second read event at a second time within a predefined amount of time from the first time. The second read event may identify the RFID tag and include second RFID parameters. The computer system may determine whether the item location falls within the first zone or the second zone based on two or more first RFID parameters and two or more second RFID parameters.

    Systems and methods using load modulation for wireless communication

    公开(公告)号:US09846796B2

    公开(公告)日:2017-12-19

    申请号:US15380946

    申请日:2016-12-15

    Applicant: SQUARE, INC.

    Inventor: Afshin Rezayee

    Abstract: A wireless reader has a processor within an integrated circuit, and the processor is used to generate a primary signal to be wirelessly transmitted from an antenna of the wireless reader to a wireless tag. A transmit pin of the integrated circuit is coupled to the processor by a signal path in the integrated circuit. The transmit pin outputs the primary signal from the integrated circuit to the antenna for wireless transmission of the primary signal to the wireless tag. A sensor is configured to sense current or voltage variations of the primary signal at a point in the signal path between the processor and the transmit pin, and a signal extraction unit is configured to extract, based on the current or voltage variations, a data signal wirelessly transmitted by the wireless tag to the wireless reader via load modulation of the primary signal.

    Event based interrogation zone tracking system for product samples

    公开(公告)号:US09836627B2

    公开(公告)日:2017-12-05

    申请号:US14946287

    申请日:2015-11-19

    Inventor: Serge Grimaux

    CPC classification number: G06K7/10366 G06K7/0008 G06K19/07762 G06Q10/087

    Abstract: The invention provides a temporary installation of a system of RFID-based terminals and user-worn RFID devices within an event interrogation zone. At an event, terminals are located within, and associated with, vendor booths erected in the interrogation zone. User RFID devices are issued to users wishing to enter the interrogation zone. Each user RFID device includes an element worn by the user, and an attached or embedded RFID tag with a stored unique UserID. Products for sampling have unique ProductIDs. The terminals are programmed for: (1) retrieving the UserID when the user enters the vendor booth; (2) retrieving a ProductID of a product sampled by the user; and (3) retrieving the UserID when the user leaves the vendor booth. The UserID and timestamps of entry, departure, and ProductIDs of products sampled are communicated to a server. The system allows tracking of products sampled and user behavior during an event.

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