Patents by Inventor David Michael Holburn

David Michael Holburn 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).

  • Patent number: 7577364
    Abstract: An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavity light emitting diodes integrated using flip-chip technology with a CMOS driver circuit. The driver circuit includes constant bias, current peaking and charge extraction. The driver circuitry is compact and can be confined within a region underlying the corresponding light source. The detector array consists of an array of photo diodes, provided with sense circuitry consisting of a pre-amplifier and post-amplifier. The diodes and sense circuitry are also integrated using a flip-chip technique. The light emitter and the detector may include adaptive optical elements to steer and/or focus the light beams.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: August 18, 2009
    Assignee: Isis Innovation Limited
    Inventors: David John Edwards, Dominic Christopher O'Brien, Grahame Edward Faulkner, David Michael Holburn, Robert Joseph Mears
  • Patent number: 7217911
    Abstract: An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavity light emitting diodes integrated using flip-chip technology with a CMOS driver circuit. The driver circuit includes constant bias, current peaking and charge extraction. The driver circuitry is compact and can be confined within a region underlying the corresponding light source. The detector array consists of an array of photo diodes, provided with sense circuitry consisting of a pre-amplifier and post-amplifier. The diodes and sense circuitry are also integrated using a flip-chip technique. The light emitter and the detector may include adaptive optical elements to steer and/or focus the light beams.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: May 15, 2007
    Assignee: ISIS Innovation Limited
    Inventors: David John Edwards, Dominic Christopher O'Brien, Grahame Edward Faulkner, David Michael Holburn, Robert Joseph Mears
  • Patent number: 6914266
    Abstract: An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavity light emitting diodes integrated using flip-chip technology with a CMOS driver circuit. The driver circuit includes constant bias, current peaking and charge extraction. The driver circuitry is compact and can be confined within a region underlying the corresponding light source. The detector array consists of an array of photo diodes, provided with sense circuitry consisting of a pre-amplifier and post-amplifier. The diodes and senses circuitry are also integrated using a flig-chip technique. The light emitter and the detector may include adaptive optical elements to steer and/or focus the light beams.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: July 5, 2005
    Assignee: ISIS Innovation Limited
    Inventors: David John Edwards, Dominic Christopher O'Brien, Grahame Edward Faulkner, David Michael Holburn, Robert Joseph Mears
  • Publication number: 20040114940
    Abstract: An optical wireless local area network using line of sight optical links. The base station and terminal stations are provided with optical transceivers which include a transmitter array and detector array. The transmitter array consists of an array of resonant cavity light emitting diodes integrated using flip-chip technology with a CMOS driver circuit. The driver circuit includes constant bias, current peaking and charge extraction. The driver circuitry is compact and can be confined within a region underlying the corresponding light source. The detector array consists of an array of photo diodes, provided with sense circuitry consisting of a pre-amplifier and post-amplifier. The diodes and senses and the detector may include adaptive optical elements to steer and/or focus the light beams.
    Type: Application
    Filed: December 18, 2003
    Publication date: June 17, 2004
    Inventors: David John Edwards, Dominic Christopher O'Brien, Grahame Edward Faulkner, David Michael Holburn, Robert Joseph Mears