Sensing device with inductive charging

摘要

A sensing device for sensing coded data disposed on or in a surface includes operative circuitry including sensing means for sensing the coded data. Processing means are provided for processing the sensed coded data. An internal power supply supplies electrical power to the operative circuitry. A first inductor is connected, or connectable, to the internal power supply to enable charging thereof while the first inductor is electromagnetically coupled with an external electromagnetic field generator.