Patents by Inventor Alan M. Brown

Alan M. Brown 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).

  • Countermeasures for idle pattern SRS interference in ethernet optical network systems
    Patent number: 7616901
    Abstract: Optical networks as defined by the IEEE 802.3ah standard suffer from Stimulated Raman Scattering (SRS) that causes data transmission at a first optical wavelength to interfere with broadcast video transmission at a second optical wavelength in single mode optical fibers. The problem is exacerbated when data is not being transmitted across the network; and instead, an idle pattern transmission is being transmitted in order to keep the network synchronized. The repetitive nature of the idle pattern transmission leads to the SRS optical interference effect. This optical interference effect is mitigated when countermeasures are implemented to modify the idle pattern transmissions or to transmit random data in place of the idle pattern transmissions.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: November 10, 2009
    Assignee: Enablence USA FTTX Networks Inc.
    Inventors: James O. Farmer, Alan M. Brown, John J. Kenny, Stephen Thomas
  • Countermeasures for idle pattern SRS interference in ethernet optical network systems
    Publication number: 20080187313
    Abstract: Optical networks as defined by the IEEE 802.3ah standard suffer from Stimulated Raman Scattering (SRS) that causes data transmission at a first optical wavelength to interfere with broadcast video transmission at a second optical wavelength in single mode optical fibers. The problem is exacerbated when data is not being transmitted across the network; and instead, an idle pattern transmission is being transmitted in order to keep the network synchronized. The repetitive nature of the idle pattern transmission leads to the SRS optical interference effect. This optical interference effect is mitigated when countermeasures are implemented to modify the idle pattern transmissions or to transmit random data in place of the idle pattern transmissions.
    Type: Application
    Filed: December 14, 2007
    Publication date: August 7, 2008
    Inventors: James O. Farmer, Alan M. Brown, John J. Kenny, Stephen Thomas
  • Countermeasures for idle pattern SRS interference in ethernet optical network systems
    Patent number: 7340180
    Abstract: Optical networks as defined by the IEEE 802.3ah standard suffer from Stimulated Raman Scattering (SRS) that causes data transmission at a first optical wavelength to interfere with broadcast video transmission at a second optical wavelength in single mode optical fibers. The problem is exacerbated when data is not being transmitted across the network; and instead, an idle pattern transmission is being transmitted in order to keep the network synchronized. The repetitive nature of the idle pattern transmission leads to the SRS optical interference effect. This optical interference effect is mitigated when countermeasures are implemented to modify the idle pattern transmissions or to transmit random data in place of the idle pattern transmissions.
    Type: Grant
    Filed: August 10, 2005
    Date of Patent: March 4, 2008
    Assignee: Wave7 Optics, Inc.
    Inventors: James O. Farmer, Alan M. Brown, John J. Kenny, Stephen Thomas
  • Method for attaching rotors to crankshafts
    Patent number: 5363547
    Abstract: An internal induction coil is used to heat the rotor of an ECM. This provides a localized heating and dilation of the bore of the rotor prior to the heating of the outer surface of the rotor. The crankshaft is located in the heated bore and acts as a heat sink. As a result, the outer surface of the rotor is not heated such as might cause the loss of magnetic properties.
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: November 15, 1994
    Inventor: Alan M. Brown
  • Apparatus for attaching rotors to crankshafts
    Patent number: 5279027
    Abstract: An internal induction coil is used to heat the rotor of an ECM. This provides a localized heating and dilation of the bore of the rotor prior to the heating of the outer surface of the rotor. The crankshaft is located in the heated bore and acts as a heat sink. As a result, the outer surface of the rotor is not heated such as might cause the loss of magnetic properties.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: January 18, 1994
    Assignee: Carrier Corporation
    Inventor: Alan M. Brown