Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
System and methods for random parameter filtering
Portable hand-held multi-function device for storing, managing and combining rewards
Polymeric compositions including their uses and methods of production
Reconstruction of deforming surfaces by canceling ambient occlusion and refining 3-D shape
LED lamp including heat dissipator
Conductor for transmitting electrical power
Method and device for evaluating evolution of tumoural lesions
  Randomly Featured Patents
Roller mill safety system
Glass microspheres with multiple bubble inclusions
Timing control circuit and semiconductor storage device
Non-skid device for tires
Image pickup apparatus, image processing apparatus, image pickup method, and image processing method
Method and apparatus for cutting patterns of printed wiring boards and method and apparatus for cleaning printed wiring boards
Method for determining the distance of visibility for a driver of a vehicle
Ultrasonic welding and cutting apparatus
Toothbrush
Radial tire with specified belt reinforcing layer cord