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
Controlling a video window position relative to a video camera position
Apparatus and method for scrolling a screen of a portable terminal having a touch screen
Methods and apparatus to determine impressions using distributed demographic information
Semiconductor device having a multilevel interconnect structure and method for fabricating the same
Methods, systems and apparatus for displaying the multimedia information from wireless communication networks
Interposer having molded low CTE dielectric
Soybean sequences associated with the FAP3 locus
  Randomly Featured Patents
Electrical connector
Method of protecting a copper pad structure during a fuse opening procedure
Method and apparatus for providing intra-field interpolation of video signals with adaptive weighting based on gradients of temporally adjacent fields
Fluid circuit and industrial truck having a fluid circuit
Belt-supported hook for supporting a tool for a craftsman
Stacked devices for multichip modules
Microfabricated microengine with constant rotation rate
Cellular radiotelephone system, a method of protecting the data base of a visitor location register against saturation
Estimating an offset image of a new imaging device from the offset image of an aged imaging device
System and method for performing hand-offs between internet protocol (IP) core networks in the wireless domain