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
Sabatier process and apparatus for controlling exothermic reaction
Video-recording reservation management apparatus, method, program, and system
Interconnecting virtual domains
Sink
Method for reserving network bandwidth for versioned network services
Buildable dinnerware
High pressure refolding of protein aggregates and inclusion bodies
  Randomly Featured Patents
Rate-responsive pacemaker with circuitry for processing multiple sensor inputs
Nut and bolt securing device
Synthetic array autofocus system
Electrical connector
Oryzacystatin-I applications and methods
Email address verification
Ink jet printing method, ink jet printing system, ink jet printing apparatus and control program
Stilbene derivatives
Hole cutter
Method for fabricating 3D structure having hydrophobic surface using metal foil