Patents by Inventor David Toebes

David Toebes 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).

  • System and method for vibration detection with direction change response immunity using a magnetic field sensor
    Patent number: 11125590
    Abstract: A method of detecting a vibration comprises determining a vibration flag has been set during a running mode of the magnetic field sensor, remaining in the running mode until a predetermined number of vibration flags have been set, and entering a recalibration mode when the predetermined number of vibration flags have been set. A counter can be implemented for each of the plurality of vibration flags to determine if the predetermined number of vibration flags have been set.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: September 21, 2021
    Assignee: Allegro MicroSystems, LLC
    Inventors: Benjamin Geiger, David Toebes, Naota Nakayama
  • SYSTEM AND METHOD FOR VIBRATION DETECTION WITH DIRECTION CHANGE RESPONSE IMMUNITY USING A MAGNETIC FIELD SENSOR
    Publication number: 20200355521
    Abstract: A method of detecting a vibration comprises determining a vibration flag has been set during a running mode of the magnetic field sensor, remaining in the running mode until a predetermined number of vibration flags have been set, and entering a recalibration mode when the predetermined number of vibration flags have been set. A counter can be implemented for each of the plurality of vibration flags to determine if the predetermined number of vibration flags have been set.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 12, 2020
    Applicant: Allegro MicroSystems, LLC
    Inventors: Benjamin Geiger, David Toebes, Naota Nakayama
  • Magnetic field sensors with self test
    Patent number: 9739846
    Abstract: A system includes a magnetic target and a magnetic field sensor. The magnetic field sensor comprises an output node; a circuit to detect a magnetic field produced by the magnetic target; and a processor. The processor may be configured to transmit a signal onto the output node representing the detected magnetic field; detect whether the transmitted signal is interrupted by an external source; and, if the signal is interrupted, initiate a self-test of the apparatus. Corresponding methods and apparatuses are also disclosed.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: August 22, 2017
    Assignee: Allegro MicroSystems, LLC
    Inventors: Craig S. Petrie, Bryan Cadugan, David Toebes, Michael C. Doogue, William P. Taylor
  • Magnetic Field Sensors With Self Test
    Publication number: 20160097825
    Abstract: A system includes a magnetic target and a magnetic field sensor. The magnetic field sensor comprises an output node; a circuit to detect a magnetic field produced by the magnetic target; and a processor. The processor may be configured to transmit a signal onto the output node representing the detected magnetic field; detect whether the transmitted signal is interrupted by an external source; and, if the signal is interrupted, initiate a self-test of the apparatus. Corresponding methods and apparatuses are also disclosed.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 7, 2016
    Applicant: Allegro Microsystems, LLC
    Inventors: Craig S. Petrie, Bryan Cadugan, David Toebes, Michael C. Doogue, William P. Taylor
  • LED driver having priority queue to track dominant LED channel
    Patent number: 9144126
    Abstract: An electronic circuit for driving a plurality of light emitting diode (LED) channels coupled to a common voltage node includes a priority queue for tracking a dominant LED channel. A queue manager may be provided to keep the priority queue updated during LED drive operations based on operating conditions associated with the LED channels.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: September 22, 2015
    Assignee: Allegro Microsystems, LLC
    Inventors: Pranav Raval, Gregory Szczeszynski, David Toebes
  • Methods and apparatus for positioning a coil motor
    Patent number: 8873944
    Abstract: Methods and apparatus for providing a position sensor to sense the position of a ferromagnetic target and generate a target position signal, a scaling block to receive the target position signal, and a digital RC filter to generate an output using bit shifting for dividing by some factor of two, wherein all division for computations in the RC filter are performed by bit shifts.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: October 28, 2014
    Assignee: Allegro Microsystems, LLC
    Inventors: Alexander Latham, David Toebes
  • METHODS AND APPARATUS FOR POSITIONING A COIL MOTOR
    Publication number: 20140098285
    Abstract: Methods and apparatus for providing a position sensor to sense the position of a ferromagnetic target and generate a target position signal, a scaling block to receive the target position signal, and a digital RC filter to generate an output using bit shifting for dividing by some factor of two, wherein all division for computations in the RC filter are performed by bit shifts.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 10, 2014
    Inventors: Alexander Latham, David Toebes
  • LED Driver Having Priority Queue to Track Dominant LED Channel
    Publication number: 20140055051
    Abstract: An electronic circuit for driving a plurality of light emitting diode (LED) channels coupled to a common voltage node includes a priority queue for tracking a dominant LED channel. A queue manager may be provided to keep the priority queue updated during LED drive operations based on operating conditions associated with the LED channels.
    Type: Application
    Filed: August 22, 2012
    Publication date: February 27, 2014
    Applicant: Allegro Microsystems, Inc.
    Inventors: Pranav Raval, Gregory Szczeszynski, David Toebes