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
Systems and methods for memory-efficient storage and extraction of maximum power reduction (MPR) values in two-carrier wireless data systems
Cup holder
Glasses with safety device and three-dimensional glasses with safety device
Apparatus and method for increasing reliability of serving cell change
Method for spacing electrical conductors and related devices
Charging device
Adaptive transmissions in wireless networks
  Randomly Featured Patents
Universal battery charging system and a method
Saving power when in or transitioning to a static mode of a processor
Three-wheeled roller skate and method therefor
Grounding lug for armored cable and method
Package for toilet bowl cleaner
Converter for connecting modem equipment of dissimilar interface protocol
Method for amplifying a time-varying optical signal and optical amplification unit
Electronically scanning direction finding antenna system
Semiconductor device with copper wiring connected to storage capacitor
Bingo game