Spatial recognition of RFID tag placement using antenna multiplexing
First Claim
Patent Images
1. A system to determine spatial placement of one or more radio-frequency identification (RFID) tags using multiplexed antennae for Near Field Communication (NFC), the system comprising:
- a radio-frequency (RF) reader circuit having a receiver, the RF reader circuit being configured to establish NFC through radio-frequency identification (RFID) with a first radio-frequency identification (RFID) tag;
an antenna-selecting component configured to selectively establish electrical coupling such that the RF reader circuit operates in one of the following states at a given time;
a first state wherein the receiver is configured to receive information from the first RFID tag through a first antenna having a first location;
ora second state wherein the receiver is configured to receive information from the first RFID tag through a second antenna having a second location;
a controller configured to determine placement of one or more RFID tags by controlling the antenna-selecting component such that the controller is configured to determine whether placement of the first RFID tag is closer to the first location or the second location;
one or more physical processors configured by machine-readable instructions to;
associate individual ones of the one or more RFID tags with individual players of a video game based on the placement of individual ones of the one or more RFID tags, such that;
the first RFID tag is associated with a first player of the video game based on the placement of the first RFID being closer to the first location, andthe first RFID tag is associated with a second player based on the placement of the first RFID being closer to the second location;
wherein the antenna-selecting component includes;
a first alternating-current shorting circuit configured to selectively establish electrical coupling for alternating current between an antenna-matching network and the first antenna such that either i) information is received, at the receiver, from the first RFID tag through the first antenna, or ii) electrical coupling is selectively shorted; and
a second alternating-current shorting circuit configured to selectively establish electrical coupling for alternating current between the antenna-matching network and the second antenna such that either i) information is received, at the receiver, from the first RFID tag through the second antenna, or ii) electrical coupling is selectively shorted; and
wherein the controller is further configured to determine whether the placement of first RFID tag is closer to the first location or the second location by controlling the first alternating-current (AC) shorting circuit and the second alternating-current (AC) shorting circuit.
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Abstract
A system to determine the placement of multiple RFID tags uses multiple antennae. The RF communication (or NFC) includes read and/or read/write communication with the RFID tags.
37 Citations
24 Claims
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1. A system to determine spatial placement of one or more radio-frequency identification (RFID) tags using multiplexed antennae for Near Field Communication (NFC), the system comprising:
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a radio-frequency (RF) reader circuit having a receiver, the RF reader circuit being configured to establish NFC through radio-frequency identification (RFID) with a first radio-frequency identification (RFID) tag; an antenna-selecting component configured to selectively establish electrical coupling such that the RF reader circuit operates in one of the following states at a given time; a first state wherein the receiver is configured to receive information from the first RFID tag through a first antenna having a first location;
ora second state wherein the receiver is configured to receive information from the first RFID tag through a second antenna having a second location; a controller configured to determine placement of one or more RFID tags by controlling the antenna-selecting component such that the controller is configured to determine whether placement of the first RFID tag is closer to the first location or the second location; one or more physical processors configured by machine-readable instructions to; associate individual ones of the one or more RFID tags with individual players of a video game based on the placement of individual ones of the one or more RFID tags, such that; the first RFID tag is associated with a first player of the video game based on the placement of the first RFID being closer to the first location, and the first RFID tag is associated with a second player based on the placement of the first RFID being closer to the second location; wherein the antenna-selecting component includes; a first alternating-current shorting circuit configured to selectively establish electrical coupling for alternating current between an antenna-matching network and the first antenna such that either i) information is received, at the receiver, from the first RFID tag through the first antenna, or ii) electrical coupling is selectively shorted; and a second alternating-current shorting circuit configured to selectively establish electrical coupling for alternating current between the antenna-matching network and the second antenna such that either i) information is received, at the receiver, from the first RFID tag through the second antenna, or ii) electrical coupling is selectively shorted; and wherein the controller is further configured to determine whether the placement of first RFID tag is closer to the first location or the second location by controlling the first alternating-current (AC) shorting circuit and the second alternating-current (AC) shorting circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer-implemented method for determining spatial placement of one or more radio-frequency identification (RFID) tags using multiplexed antennae for Near Field Communication (NFC), the method comprising:
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establishing NFC between a radio-frequency (RF) reader circuit comprising a receiver and a first radio-frequency identification (RFID) tag by controlling an antenna-matching network; selectively establishing electrical coupling such that the RF reader circuit operates in one of the following states at a given time; a first state wherein the receiver is configured to receive information from the first RFID tag through a first antenna having a first location;
ora second state wherein the receiver is configured to receive information from the first RFID tag through a second antenna having a second location; and determining placement of the first RFID tag by selectively enabling NFC through the first antenna and the second antenna, wherein placement determination includes determining whether the first RFID tag is closer to the first location or the second location; associating individual ones of the one or more RFID tags with individual players of a video game based on the placement of individual ones of the one or more RFID tags, including; associating the first RFID tag with a first player of the video game when the first RFID is closer to the first location, and associating the first RFID tag with a second player when the first RFID is closer to the second location; selectively establishing electrical coupling for alternating current between the antenna-matching network and the first antenna such that information is received, at the receiver, from the first RFID tag through the first antenna; and selectively establishing electrical coupling for alternating current between the antenna-matching network and the second antenna such that information is received, at the receiver, from the first RFID tag through the second antenna. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification