Patents by Inventor Urban Westergren

Urban Westergren 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).

  • Optical system and method for performing analog to digital conversion
    Patent number: 6801147
    Abstract: An opto-electronic A/D converter includes a tunable laser for wavelength modulating a narrowband coherent electromagnetic beam by the amplitude of the analog signal. A grating transforms the wavelength modulated beam into a corresponding angularly modulated beam. A set of kinoforms diffract the angularly modulated beam into a bundle of diffracted beams. Detectors determine the digital signal by repeatedly sampling the spatial power distribution of the diffracted beams.
    Type: Grant
    Filed: February 12, 2002
    Date of Patent: October 5, 2004
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Lars Thylén, Sverker Hård, Urban Westergren, Mehran Mokhtari
  • A/D conversion method and apparatus
    Publication number: 20020175845
    Abstract: An opto-electronic A/D converter includes a tunable laser (10) for wavelength modulating a narrowband coherent electromagnetic beam by the amplitude of the analog signal. A grating (12) transforms the wavelength modulated beam into a corresponding angularly modulated beam. A set of kinoforms (14) diffract the angularly modulated beam into a bundle of diffracted beams. Detectors (18, 20) determine the digital signal by repeatedly sampling the spatial power distribution of the diffracted beams.
    Type: Application
    Filed: February 12, 2002
    Publication date: November 28, 2002
    Inventors: Lars Thylen, Sverker Hard, Urban Westergren, Mahran Mokhtari