Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Signal processing for object detection system










Image Number 16 for United States Patent #6243036.

Methods and apparatus for detecting objects are disclosed. In one embodiment of the invention, a person entering a secured or "Safe Zone.TM." is illuminated with low-power polarized radio waves. Differently polarized waves which are reflected back from the person are collected and measured. In a preferred embodiment of the invention, concealed weapons are detected by calculating the difference of a pair of differences between levels of different polarized reflected energy in the time domain, and by using signal processing methods and apparatus to improve the reliability of the detection process. Alternative embodiments of the invention may be used to detect a wide variety of objects other than concealed firearms. The invention may be used for inventory control or to thwart shoplifting.








 
 
  Recently Added Patents
Universal tablet and smartphone holder
Mounting apparatus for PCI card
Three-dimensional shape data processing apparatus and three-dimensional shape data processing method
Image processing device, image forming apparatus, and non-transitory computer readable recording medium
System and method for investing public deposits
System and method for text input with a multi-touch screen
Semiconductor device
  Randomly Featured Patents
Method and apparatus for removal of moisture from rotor blades
Entryway protector
Calculation of a scalar product in a direct-type FIR filter
Inbred corn plant GF6151 and seeds thereof
Cooler arrangement
Sealing arrangement at coke oven chambers
Ink stick for a phase change ink jet printer
Minimally invasive spinal surgical methods and instruments
Skate sharpener
Wall bench