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5533 条记录 (耗时 0.018 秒)

    Early collision detection and handling in CDMA-based RFID systems
    1.
    发明授权
    Early collision detection and handling in CDMA-based RFID systems 有权

    公开(公告)号：US11120232B2

    公开(公告)日：2021-09-14

    申请号：US16963638

    申请日：2019-01-28

    申请人： Texas State University

    发明人： Ramsey Doany ,  Harold Stern

    IPC分类号： G06K7/10 ,  G06K19/07 ,  G01S13/74 ,  H04Q5/22 ,  G06F12/00 ,  G06K17/00

    摘要： A method, system and computer program product for enabling early collision detection and handling in Code Division Multiple Access (CDMA)-based radio-frequency identification (RFID) systems. A tag receives an instruction from a reader to reflect either a single encoded bit or multiple encoded bits. The tag then reflects either the single encoded bit or the multiple encoded bits to the reader. The reader decodes the received encoded bit(s) from the tag, where the decoded bit(s) are placed in a vector or matrix by the reader. The vector/matrix is then transmitted to the tag, which determines if the reflected bit(s) agree with the corresponding bit(s) in the vector/matrix thereby indicating whether the reflected bit(s) were read successfully by the reader. The tag will then enter a no reflection mode in response to a disagreement between the reflected bit(s) with the corresponding bit(s) in the vector/matrix thereby preventing collisions from occurring.

    Heat maps of infectious agents and methods of using same to screen subjects and/or determine an infection risk
    2.
    发明授权
    Heat maps of infectious agents and methods of using same to screen subjects and/or determine an infection risk 有权

    公开(公告)号：US11011277B1

    公开(公告)日：2021-05-18

    申请号：US16890909

    申请日：2020-06-02

    申请人： Sean Kelly ,  Kevin M. Kelly

    发明人： Sean Kelly ,  Kevin M. Kelly

    IPC分类号： H04Q5/22 ,  G16H50/80 ,  G06Q50/22 ,  G06Q10/06

    摘要： The present disclosure provides methods for screening subjects at a subordinate location within a geographic region, or a subordinate space within the subordinate location for an infectious agent. Such methods may comprise assigning a risk score to each of the one or more subordinate locations or subordinate spaces based on an amount of infectious agent in pooled environmental samples and pooled biological samples in a subordinate location or subordinate space as compared to each other subordinate location or subordinate space, and then screening biological samples from subordinate locations or subordinate spaces that have a higher risk score before screening biological samples from subordinate locations or subordinate spaces that have a lower risk score. Methods for determining a risk of a viral infection in one or more geographic regions are also provided.

    Automatic mode detection in a dual operating mode RFID tag
    9.
    发明授权
    Automatic mode detection in a dual operating mode RFID tag 有权

    公开(公告)号：US10346648B2

    公开(公告)日：2019-07-09

    申请号：US16004739

    申请日：2018-06-11

    申请人： Amtech Systems, LLC

    发明人： Kelly Gravelle ,  Robert W. Tiernay ,  Dale L. Scott ,  Charles A. Johnson ,  Filip Weytjens ,  Matthew K. Burnett

    IPC分类号： G06K7/10 ,  G06K19/07 ,  H04Q5/22

    摘要： A multi-mode, preferably dual mode, radio frequency identification (RFID) tag is adapted for automatic detection of whether a RFID reader located within communication range of the RFID tag is transmitting a continuous wave (CW) or modulated wave types of RF signal, and accordingly, mandating a response from the tag in read-only (RO) mode or read/write (R/W) mode, respectively. The tag includes means for designating one of the RO and R/W operating modes as a default mode of the tag, and for switching the tag from its default mode to its other operating mode, and vice versa, according to a rule for determining the frequency of occurrence of a selected event related to signal type of the reader. A device-implemented method of this automatic detection, and a method of fabricating the tag, are also disclosed.