Patents by Inventor Naota Nakayama

Naota Nakayama 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
  • Circuits and methods for fault testing
    Patent number: 9513337
    Abstract: An integrated circuit sensor includes circuitry and methods for generating a high speed delay fault test clock signal. A trimmable oscillator generates a master clock signal for use by an output protocol processor to provide the sensor output signal. A fault test clock signal generator is responsive to the master clock signal and to a test trigger signal for generating the test clock signal having a launch pulse and a capture pulse, each having edges substantially coincident with like edges of pulses of the master clock signal and a spacing between launch and capture pulses established by the trimmable master clock signal.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: December 6, 2016
    Assignee: Allegro Microsystems, LLC
    Inventors: Glenn A. Forrest, Aaron Cook, Dana Briere, Devon Fernandez, Naota Nakayama
  • CIRCUITS AND METHODS FOR FAULT TESTING
    Publication number: 20130116945
    Abstract: An integrated circuit sensor includes circuitry and methods for generating a high speed delay fault test clock signal. A trimmable oscillator generates a master clock signal for use by an output protocol processor to provide the sensor output signal. A fault test clock signal generator is responsive to the master clock signal and to a test trigger signal for generating the test clock signal having a launch pulse and a capture pulse, each having edges substantially coincident with like edges of pulses of the master clock signal and a spacing between launch and capture pulses established by the trimmable master clock signal.
    Type: Application
    Filed: November 7, 2011
    Publication date: May 9, 2013
    Applicant: Allegro Microsystems, Inc.
    Inventors: Glenn A. Forrest, Aaron Cook, Dana Briere, Devon Fernandez, Naota Nakayama
  • Rotation sensor
    Patent number: 8164324
    Abstract: A rotation sensor includes a detecting portion, a rotational state determining portion and a pulse generating portion. The detecting portion detects a rotation of a rotational member and outputs a detection signal. The rotational state determining portion determines a rotational state of the rotational member on the basis of the detection signal in a predetermined period. The pulse generating portion generates and outputs a first pulse and a second pulse, of which waveforms differ from each other, in response to a rotational direction of the rotational member after the predetermined period. The pulse generating portion further generates and outputs a third pulse regardless of the rotational state of the rotational member in the predetermined period.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: April 24, 2012
    Assignees: Aisin Seiki Kabushiki Kaisha, Allegro Microsystems, Inc.
    Inventors: Takashi Hara, Hidenobu Muramatsu, Glenn A. Forrest, Hitoshi Yabusaki, Naota Nakayama
  • ROTATION SENSOR
    Publication number: 20100013467
    Abstract: A rotation sensor includes a detecting portion, a rotational state determining portion and a pulse generating portion. The detecting portion detects a rotation of a rotational member and outputs a detection signal. The rotational state determining portion determines a rotational state of the rotational member on the basis of the detection signal in a predetermined period. The pulse generating portion generates and outputs a first pulse and a second pulse, of which waveforms differ from each other, in response to a rotational direction of the rotational member after the predetermined period. The pulse generating portion further generates and outputs a third pulse regardless of the rotational state of the rotational member in the predetermined period.
    Type: Application
    Filed: July 17, 2009
    Publication date: January 21, 2010
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, ALLEGRO MICROSYSTEMS, INC.
    Inventors: Takashi HARA, Hidenobu MURAMATSU, Glenn A. FORREST, Hitoshi YABUSAKI, Naota NAKAYAMA