PASSIVE STYLUS WITH RFID-ENABLED SENSING

摘要

In embodiments of a passive stylus with RFID-enabled sensing, a computing device includes a touchscreen that senses touch contact, and includes an RFID interrogator to interrogate passive RFID tags. The stylus includes a conductive tip designed for interaction with the touchscreen of the computing device. The stylus integrates a pressure sensor that senses pressure when the conductive tip of the stylus contacts the touchscreen. The stylus also includes at least one RFID antenna that is positioned in a body of the stylus to prevent detuning the RFID antenna when the stylus is held for use. The passive RFID tag can receive pressure sensor data from the pressure sensor in the stylus, and the passive RID tag can be read by the RFID interrogator to determine the pressure applied to the conductive tip of the stylus in order determine whether the stylus is contacting the touchscreen or only hovering above it.

主权项

1. A stylus, comprising:
a conductive tip configured to interact with a touchscreen of a computing device; a pressure sensor configured to sense pressure when the conductive tip contacts the touchscreen; and a passive RFID tag configured to receive pressure sensor data from the pressure sensor, the passive RFID tag readable by the computing device to determine whether the conductive tip of the stylus is contacting the touchscreen, or whether the stylus is hovering above the touchscreen.