SEMI-ACTIVE RFID TAG AND RELATED PROCESSES
First Claim
1. A semi-active radio frequency identification (RFID) tag for communicating with a tag reader, said tag comprising:
- tag circuitry adapted to receive and store information pertaining to a person or object associated with said tag;
an antenna for receiving and transmitting information signals relative to a tag reader;
an on-board battery for powering said tag circuitry; and
a power management system including a processor circuit for controllably coupling said on-board battery to enable selected limited portions of said tag circuitry sufficient to complete a communication protocol while prolonging battery service life.
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Accused Products
Abstract
An improved radio frequency identification (RFID) tag and related reader system and process are provided, wherein the RFID tag includes an on-board battery for enhanced signal transmission range, relatively rapid signal transmission speed, and optimized completion of a data transaction between the tag and a reader. The RFID tag further includes a power management system for activating the tag battery on an as-needed basis, and for thereupon enabling limited portions of the tag circuitry as required for a specific communication protocol, thereby conserving battery power and prolonging battery service life. In one preferred form, the battery is integrated with an antenna structure of single or dual mode with respect to frequency or type. This combination battery-antenna may be designed for recharging from a source of ambient energy.
146 Citations
92 Claims
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1. A semi-active radio frequency identification (RFID) tag for communicating with a tag reader, said tag comprising:
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tag circuitry adapted to receive and store information pertaining to a person or object associated with said tag;
an antenna for receiving and transmitting information signals relative to a tag reader;
an on-board battery for powering said tag circuitry; and
a power management system including a processor circuit for controllably coupling said on-board battery to enable selected limited portions of said tag circuitry sufficient to complete a communication protocol while prolonging battery service life. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A semi-active radio frequency identification (RFID) tag for communicating with a tag reader, said tag comprising:
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tag circuitry adapted to receive and store information pertaining to a person or object associated with said tag, said tag circuitry including a plurality of circuit blocks, at least one of said circuit block comprising a sensor;
an antenna for receiving and transmitting information signals relative to a tag reader;
an on-board battery for powering said tag circuitry; and
a power management system including a processor circuit for controllably coupling said on-board battery to enable specific ones of said circuit blocks each for an individually controlled time interval sufficient to complete a communication protocol while prolonging battery service life. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A semi-active radio frequency identification (RFID) tag and tag reader system, comprising:
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a tag reader; and
an RFID tag including tag circuitry adapted to receive and store information pertaining to a person or object associated with said tag, an antenna for receiving and transmitting information signals in the course of a communication session between said tag and said tag reader, an on-board battery for powering said tag circuitry, and a power management system including a processor circuit for controllably coupling said on-board battery to enable selected limited portions of said tag circuitry sufficient to complete said communication session while prolonging battery service life. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. In a semi-active radio frequency identification (RFID) tag for communicating with a tag reader, said tag comprising tag circuitry having multiple circuit blocks adapted to receive and store information pertaining to a person or object associated with said tag, an antenna for receiving and transmitting information signals relative to a tag reader, and an on-board battery for powering said tag circuitry, a tag power consumption control process comprising the steps of:
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providing a power management system including a processor circuit for regulating coupling of said circuit blocks to said on-board battery; and
controllably coupling specific selected ones of said circuit blocks to said on-board battery each for an individually controlled time interval sufficient to complete said specific communication protocol. - View Dependent Claims (67, 68, 69, 70, 71, 72, 73, 74)
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75. An electronic tag for communicating with a tag reader, said tag comprising:
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tag circuitry adapted to receive and store information pertaining to a person or object associated with said tag;
an antenna for receiving and transmitting information signals relative to a tag reader;
a battery for powering said tag circuitry; and
a power management system including a processor circuit for controllably coupling said battery to enable selected portions of said tag circuitry sufficient to complete a communication protocol. - View Dependent Claims (76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92)
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Specification