Resources Contact Us Home
Estimating altitude of a communications device

Image Number 2 for United States Patent #7019693.

The altitude of a communications device, which communicates with a communications system via at least one antenna, is estimated. The altitude estimation is based at least on altitude information of said at least one antenna. The altitude estimate of the communications device may be based on a two-dimensional location estimate for the communications device and on information representing three-dimensional location of said at least one antenna of said communication system. The two-dimensional location estimate and the altitude estimate may be sent to the communications device as location assistance information.

  Recently Added Patents
Systems and methods for classifying electronic information using advanced active learning techniques
Multi-room user interface
Elementary network description for efficient link between neuronal models and neuromorphic systems
User interfaces
Non-volatile flash-RAM memory with magnetic memory
Optical multiplexer/demultiplexer
Optical coherence tomography with multiple sample arms
  Randomly Featured Patents
Methods for forming vertical gate transistors providing improved isolation and alignment of vertical gate contacts
Hybrid tomato plant named `Esas`
Vibration-aided feed device for a molding apparatus
Optical waveguide and method of manufacturing the same, and optical waveguide mounted board
Article washing method
Assembly moves using float-remaining figures
Electrical connector for connecting printed circuit boards
Photographic processor and improved filter assembly
Antileukemic and immunostimulant peptides
Attaching agents to tissue with transglutaminase and a transglutaminase substrate