Patents by Inventor Badri Narayanan Vellambi Ravisankar

Badri Narayanan Vellambi Ravisankar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Visible Light Based Indoor Positioning System
    Publication number: 20170276767
    Abstract: A method for enabling indoor positioning of a mobile receiver, including: detecting an orientation of the mobile receiver; measuring light intensities using at least three effective visible light receiving areas positioned on the mobile receiver, wherein the at least three effective visible light receiving areas are orientated such that a measurement of light intensity of a light from the same light source by each of the at least three effective visible light receiving areas is different from the others; and producing an output which enables a 3-dimensional indoor positioning of the mobile receiver relative to a second coordinate system.
    Type: Application
    Filed: December 10, 2015
    Publication date: September 28, 2017
    Inventors: Siu Wai Ho, Yasir Muhammad, Badri Narayanan Vellambi Ravisankar