Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Self calibration of transponder apparatus










Image Number 2 for United States Patent #6529156.

A method and apparatus is provided for remotely and constantly calibrating a transponder by using the ring around phenomenon. A number of different time varying physical quantities, such as for example temperature, signal level, noise, transmission line flex, frequency, and general operational effects, affect the inherent delay in transponders on a time varying basis. The invention relies on a the ring around phenomenon to produce pulse doublets, wherein the distance between the pulses in the pulse doublets correspond to the instantaneous delay in the transponder. The system is configured so that instantaneous variation in the transmission delay is detected and recognized on a pulse by pulse basis and transmitted to the interrogation device, which then functions to calculate the actual delay. Normal operation of the transponder is not affected by the continuous calibration method, and therefore a special calibration mode is not required.








 
 
  Recently Added Patents
Content output control device and content output control method
Method for treating wounds for mammals, wound healer compound, and method of manufacturing thereof
Semiconductor memory system having ECC circuit and controlling method thereof
Organic light emitting display device and method of manufacturing the same
Extensible framework for client-based active network measurement
Method, apparatus, and manufacture for adaptation of video encoder tuning parameters
Method and apparatus for storing email messages
  Randomly Featured Patents
Picture coding apparatus for a still picture sequence and picture decoding apparatus for a still picture sequence
Shipping platform
Submerged passively-safe power plant
Portable computer
Method for providing vehicle information at a live auction
Resonant frequency adjustor and method of utilizing the same
Gravity extraction air launch system for launch vehicle
Use of audio signals for monitoring and remediating spinning irregularides in NMR spectrometers
Tungsten liner process for simultaneous formation of integral contact studs and interconnect lines
Baseless lamp