Patents by Inventor Robert Hadaway

Robert Hadaway 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: 9853762
    Abstract: Systems and methods of sharing optical spectrum between a plurality of users of a submarine optical system includes receiving one or more optical signals from the plurality of users of the submarine optical system, wherein each of the plurality of users are assigned a slice of optical spectrum on the submarine optical system; monitoring each of the one or more optical signals to determine compliance with one or more constraints; and adding the one or more optical signals to the submarine optical system if compliant with the one or more constraints.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: December 26, 2017
    Assignee: Ciena Corporation
    Inventors: Darwin Bruce Evans, Robert Hadaway, Loren Berg
  • Publication number: 20160164597
    Abstract: Systems and methods of sharing optical spectrum between a plurality of users of a submarine optical system includes receiving one or more optical signals from the plurality of users of the submarine optical system, wherein each of the plurality of users are assigned a slice of optical spectrum on the submarine optical system; monitoring each of the one or more optical signals to determine compliance with one or more constraints; and adding the one or more optical signals to the submarine optical system if compliant with the one or more constraints.
    Type: Application
    Filed: December 4, 2014
    Publication date: June 9, 2016
    Applicant: CIENA CORPORATION
    Inventors: Darwin Bruce EVANS, Robert HADAWAY, Loren BERG
  • Patent number: 7633908
    Abstract: A mobile ad hoc network is formed by selecting at least one client to function as a Virtual Mobile Server (“VMS”) on behalf of other clients: Those other clients subsequently communicate with a cell station via the VMS on an UWB format. Other clients may function as Virtual Distributed Mobile Servers (“VDMSs”) which relay communications between the VMS and clients which are out of direct communication range of the VMS. Further, multiple VMSs may be implemented for a single ad hoc network in order to bundle bandwidth. Clients may also extend the communication range of the VMS to a new cell station in order to enable earlier initiation of cell station handoff.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: December 15, 2009
    Assignee: Nortel Networks Limited
    Inventors: Herman Kwong, Robert Hadaway, Thomas Chmara, Jodee Varney
  • Patent number: 5498885
    Abstract: An integrated circuit is provided with particular application for high frequency modulation circuits, such as a mixer circuit, with reduced noise and gain. The circuit provides a novel application of a single device comprising a 4 or 5 terminal, gate controlled lateral bipolar junction transistor device, in the form of a merged MOS and lateral bipolar transistor. In a grounded base configuration, RF and LO signals are applied to the gate and emitter terminals respectively and provide for modulated output at the collector, and provides signal modulation with reduced noise compared with multi-device implementations of known mixer circuits using a summation circuit, diodes and FETs. Advantageously, operation of the device in the grounded base or grounded emitter configuration provides for strong modulation of the DC current gain, i.e. over 4 decades, as a function of gate voltage.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: March 12, 1996
    Assignee: Northern Telecom Limited
    Inventors: M. Jamal Deen, Duljit S. Malhi, Zhixin Yan, Robert A. Hadaway
  • Patent number: 4868618
    Abstract: A conductor-dielectric-semiconductor device and a method of making such a device which has an insulating silicon-dioxide dielectric layer on a silicon substrate, and a conductive layer over a region of the dielectric layer. Silicon ions have been implanted into the region under the conductive layer. Depending upon the thickness of the region and the concentration of implanted silicon ions, the device can function as an IGFET memory device or a vertical resistor between the conductive layer and the substrate.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: September 19, 1989
    Assignee: Northern Telecom Limited
    Inventors: Alexander Kalnitsky, Michael I. H. King, Robert A. Hadaway