Resources Contact Us Home
Transponder actuatable switching device

Image Number 3 for United States Patent #8130080.

The present invention relates to a switching device for generating a switch signal, a reading device with the switching device and a method for the communication between a reading device and a transponder (T). The switching device includes an antenna (4), which with the help of an adapter circuit (AN) is adapted to a given resistance, and a measuring bridge (1), which includes two voltage dividers connected in parallel. The resistance acts in one of the voltage dividers and in the case of a change of the resistance the measuring bridge (1) generates the switch signal. This means when a transponder reaches the detection range of a reading device having the switching device, an additional impedance is coupled in, which acts on the measuring bridge (1). This change is recognized and leads to the generation of the switch signal.

  Recently Added Patents
Phase noise extraction apparatus and technique
Method and system for cooling of integrated circuits
Photoelectric conversion device
Organic electroluminescence element
Modified polyolefin resin for glass fiber treatment, surface-treated glass fiber, and fiber-reinforced polyolefin resin
Extensible framework for client-based active network measurement
  Randomly Featured Patents
Method of optimizing heavy crude transportation by incorporation under pressure of dimethyl ether
N-phenyl substituted carbamoyloxyalkyl-azolium derivatives
Method and device arrangement for managing a user application/device management server/client device environment
Circuit arrangement for evaluating a video synchronizing signal
Cabinet and sliding drawer having improved features
Multi-antenna reception apparatus, multi-antenna reception method, multi-antenna transmission apparatus and multi-antenna communication system
Closure device with self-aligning poppet
Apparatus for process line testing
Polishing pad and fabricating method thereof