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
Decoration holder
Organic light-emitting display with black matrix
Managing and collaborating with digital content
Method for producing SOI substrate and SOI substrate
Chitosan hydrogel derivatives as a coating agent with broad spectrum of antimicrobial activities
Information processing apparatus capable of authentication processing with improved user convenience, control program for information processing apparatus, and recording medium having control
Optical writer and image forming apparatus including same
  Randomly Featured Patents
Floppy disk drive with local processor control
Layout structure for a flip chip semiconductor integrated circuit
Gas sensor with multiple exposed active elements
Dynamic beamforming for ad hoc networks
Laminate-type piezoelectric device and method for manufacturing the same
Air feed block for a mechanical loom
Safety identification assembly and method
Method of treating a semiconductor substrate
Electric steam iron
Very low sulfur gas feeds for sulfur sensitive syngas and hydrocarbon synthesis processes