| 摘要 |
A reader apparatus (10) for an RFID-implanted human user is incorporated into a wristband (16) such as a bracelet or a watchstrap worn by the user. The RFID device (14) is subcutaneously implanted in the vicinity of the user's wrist (12), ensuring close proximity of the reader apparatus (10) to the RFID device (14) to support reliable near-field RF communications at low power levels. The wristband (16) includes a reader coil (18) having a plurality of turns, a reader circuit (50, 52, 54), and a rechargeable battery (62) for powering the reader circuit. The same reader coil (18) is used to simplify recharging of the battery (62) by inductively coupling the reader coil (18) to a charging coil (36) disposed in a small charging stand or storage case (30). In watch strap applications, the reader circuitry (50, 52, 54) and battery (62) are disposed in a watch case (20) affixed to the strap (16), and the watch case (20) includes an alphanumeric display (20a) for communicating information from the RFID device (14) to the user.
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