Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ultrasonic tracking system










Image Number 4 for United States Patent #4980871.

An ultrasonic tracking system comprising a transmitting unit and a drive unit. The transmitting unit is carried by the subject to be tracked and produces brief, periodic ultrasonic bursts. The drive unit has an ultrasonic receiver and a motorized assembly capable of tilting and panning an attached camera in response to control signals from the receiver. This receiver employs three ultrasonic microphones located at three of the four corners of an imaginary square centered on and perpendicular to the axis of the camera lens. The receiver measures the relative arrival times of signals received by the microphones, determines the direction and degree to which the camera is not pointed directly at the subject, and supplies control signals to the motorized assembly, to drive motors to re-orient the camera (and receiver) to point toward the subject.








 
 
  Recently Added Patents
Polysiloxane-modified polyhydroxy polyurethane resin, method for producing same, heat-sensitive recording material using the resin, imitation leather, thermoplastic polyolefin resin skin mater
Display screen or portion thereof with icon
Method for preparation of ruthenium-indenylidene carbene catalysts
Semiconductor memory device, reading method thereof, and data storage device having the same
Mobile phone
Method for imaging of targeted reflectors
Functioning optical lens and production method thereof
  Randomly Featured Patents
Oil sump for use in internal combustion engines and transmissions
Filtered list assisted element selection
Soldering apparatus
Vacuum cleaner with vibrating brushes
Emergency rescue device
Aircraft control surface measurement
System and method for aggregating raw data into a star schema
Dust boot assemblies and apparatus for providing grease relief for a dust boot
Composite material based on vinylaromatic polymers having enhanced thermal insulation properties and process for the preparation thereof
Chrysanthemum plant named `Empire Peach Champagne`