Patents by Inventor Christine M. Graham

Christine M. Graham 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: 10495485
    Abstract: An apparatus and a method provide an output signal indicative of a speed of rotation and/or a direction of movement of a ferromagnetic object having ferromagnetic features and capable of moving. A variety of signal formats of the output signal are described, each of which have pulses at a rate faster than the ferromagnetic features pass by the magnetic field sensor.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: December 3, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: Eric Burdette, Paul A. David, Christine M. Graham, Seth Prentice
  • Patent number: 10088533
    Abstract: An integrated magnetic field sensor includes a magnetic field sensing circuit and a power driving circuit disposed upon or within a common substrate. A method of powering on and off a load uses the above integrated magnetic field sensor.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: October 2, 2018
    Assignee: Allegro MicroSystems, Inc.
    Inventors: Manuel Rivas, Gerardo A. Monreal, Christine M. Graham, Eric G. Shoemaker
  • Publication number: 20170336225
    Abstract: An apparatus and a method provide an output signal indicative of a speed of rotation and/or a direction of movement of a ferromagnetic object having ferromagnetic features and capable of moving. A variety of signal formats of the output signal are described, each of which have pulses at a rate faster than the ferromagnetic features pass by the magnetic field sensor.
    Type: Application
    Filed: May 16, 2017
    Publication date: November 23, 2017
    Applicant: Allegro MicroSysterns, LLC
    Inventors: Eric Burdette, Paul A. David, Christine M. Graham, Seth Prentice
  • Publication number: 20160200245
    Abstract: An integrated magnetic field sensor includes a magnetic field sensing circuit and a power driving circuit disposed upon or within a common substrate. A method of powering on and off a load uses the above integrated magnetic field sensor.
    Type: Application
    Filed: January 12, 2016
    Publication date: July 14, 2016
    Applicant: Allegro Microsystems, LLC
    Inventors: Manuel Rivas, Gerardo A. Monreal, Christine M. Graham, Eric G. Shoemaker
  • Patent number: 9222990
    Abstract: A method of performing a self-test associated with a magnetic field sensor includes generating a proximity signal responsive to a proximity of a sensed object with one or more magnetic field sensing elements, and identifying one or more characteristic values associated with the proximity signal while the proximity signal is responding to the proximity signal, The method also includes categorizing the one or more characteristic values into three or more potential categories, including three or more categories, wherein the plurality of potential categories is representative of a plurality of discrete self-test states of the proximity signal that could occur while the proximity signal is responding to the proximity of the sensed object. The method also includes communicating at least one of the plurality of potential categories into which at least one of the one or more characteristic values was categorized. A magnetic field senor implements the above method.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: December 29, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Daniel S. Dwyer, Christine M. Graham, P. Karl Scheller
  • Patent number: 7596610
    Abstract: A method and system for downloading via a browser a target application using a target control is provided. An installation system provides a web page that is downloaded from a web server to a computer system on which the target application is to be installed. The web page includes a setup frame, a test frame, and an execution frame. The test frame determines whether the target application is installed at the computer system and, if not, effects the invocation of a download/installation component to download and install the target application and an associated target control. The test frame is periodically reloaded and checks to see if the target control is installed. If the target control is installed, then the test frame notifies the execution frame. The execution frame then invokes the target control to effect the launching of the target application.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: September 29, 2009
    Assignee: Microsoft Corporation
    Inventors: Adil Faisal, Christine M. Graham, Nikolai Nedikov