Patents by Inventor Fred Schreider

Fred Schreider 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).

  • Location determination of infrastructure device and terminal device
    Patent number: 9451400
    Abstract: A method and apparatus determines a physical location of a wireless infrastructure device. At least one coarse location data from an associated terminal device is determined. Additional coarse location data are stored and accumulated. The device location is considered accurate by determining that enough received coarse location data has been received.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: September 20, 2016
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Robert A. DiFazio, Prabhakar R. Chiptrapu, John M. McNally, Narayan P. Menon, James Nolan, Fred Schreider
  • LOCATION DETERMINATION OF INFRASTRUCTURE DEVICE AND TERMINAL DEVICE
    Publication number: 20160100283
    Abstract: A method and apparatus determines a physical location of a wireless infrastructure device. At least one coarse location data from an associated terminal device is determined. Additional coarse location data are stored and accumulated. The device location is considered accurate by determining that enough received coarse location data has been received.
    Type: Application
    Filed: December 16, 2015
    Publication date: April 7, 2016
    Inventors: Robert A. DiFazio, Prabhakar R. Chiptrapu, John M. McNally, Narayan P. Menon, James Nolan, Fred Schreider
  • Location determination of infrastructure device and terminal device
    Patent number: 9301156
    Abstract: A method and apparatus determines a physical location of a wireless infrastructure device. At least one coarse location data from an associated terminal device is determined. Additional coarse location data are stored and accumulated. The device location is considered accurate by determining that enough received coarse location data has been received.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: March 29, 2016
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Robert A. DiFazio, Prabhakar R. Chitrapu, John M. McNally, Narayan P. Menon, James Nolan, Fred Schreider
  • Communication transmission impairment emulator
    Patent number: 7013257
    Abstract: A communication system emulator digitally emulates a plurality of signal impairments created by the transmitter and receiver components and communication medium in a typical communication system, for use in evaluating and refining modem design. A variety of linear and non-linear distortion characteristics are impressed on baseband signals between modulators and demodulators to evaluate and refine modem performance without requiring transmission frequency components or communication channel. The emulator comprises transmit modules, receive modules and communication media modules, and can accept or output analog or digital signals. Each module is configurable to allow modeling of simplex or duplex communication, or a common base station with multiple users transmitting or receiving, all configurations with or without communication media impairment emulation. Each module can be configured to add a plurality of linear and non-linear impairments to a baseband signal.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: March 14, 2006
    Assignee: InterDigital Technology Corporation
    Inventors: James Nolan, Leonid Kazakevich, Fryderyk Tyra, Robert Regis, Fred Schreider