Patents by Inventor Christopher Alger

Christopher Alger 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: 10911227
    Abstract: A method for facilitating the broadcast of encrypted data includes: storing a content encryption key and a server private key of a first cryptographic key pair; storing a recipient profile, the profile being related to a recipient computing device including a recipient public key of a second cryptographic key pair; receiving a broadcast request from a broadcast computing device including an broadcast message encrypted using the content encryption key; identifying a unique identifier; transmitting a data message including the encrypted broadcast message and the unique identifier; receiving a key request from the recipient computing device including the unique identifier; verifying that the unique identifier included in the key request is equivalent to the identified unique identifier; encrypting the content encryption key using the recipient public key; and transmitting the encrypted content encryption key to the recipient computing device.
    Type: Grant
    Filed: April 12, 2018
    Date of Patent: February 2, 2021
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventors: Moreshwar Mukund Datye, Ashutosh Subhash Gijare, Krishna Prasad Vasireddy, Christopher T. Wischerth, Eric Alger
  • Patent number: 10651767
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: May 12, 2020
    Assignee: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • Publication number: 20190319784
    Abstract: A method for facilitating the broadcast of encrypted data includes: storing a content encryption key and a server private key of a first cryptographic key pair; storing a recipient profile, the profile being related to a recipient computing device including a recipient public key of a second cryptographic key pair; receiving a broadcast request from a broadcast computing device including an broadcast message encrypted using the content encryption key; identifying a unique identifier; transmitting a data message including the encrypted broadcast message and the unique identifier; receiving a key request from the recipient computing device including the unique identifier; verifying that the unique identifier included in the key request is equivalent to the identified unique identifier; encrypting the content encryption key using the recipient public key; and transmitting the encrypted content encryption key to the recipient computing device.
    Type: Application
    Filed: April 12, 2018
    Publication date: October 17, 2019
    Applicant: Mastercard International Incorporated
    Inventors: Moreshwar Mukund Datye, Ashutosh Subhash Gijare, Krishna Prasad Vasireddy, Christopher T. Wischerth, Eric Alger
  • Publication number: 20190260315
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Application
    Filed: May 1, 2019
    Publication date: August 22, 2019
    Applicant: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • Patent number: 10326389
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: June 18, 2019
    Assignee: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • Publication number: 20180278185
    Abstract: Method and apparatus for providing error compensation for a magnetic field sensing element in a three-phase motor. In embodiments, a driving angle is determined from zero-crossings of the magnet pole-pairs and error compensation levels for the pole-pairs is determined to reduce distortions in the motor current waveform.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 27, 2018
    Applicant: Allegro MicroSystems, LLC
    Inventors: Yisong Lu, Christopher Alger, Lyndon Ambruson
  • Patent number: 9300235
    Abstract: A motor driver includes at least two terminals suitable for being coupled to a motor controller and to receive a motor command signal and transmit a motor status signal when the motor driver is controlling a motor. A serial data communication circuit may be configured to send and receive serial data over the at least two terminals when the at least two terminals are idle.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: March 29, 2016
    Assignee: Allegro Microsystems, LLC
    Inventors: Chee-Kiong Ng, Christopher Alger, Timothy Reynolds
  • Publication number: 20140292247
    Abstract: A motor driver includes at least two terminals suitable for being coupled to a motor controller and to receive a motor command signal and transmit a motor status signal when the motor driver is controlling a motor. A serial data communication circuit may be configured to send and receive serial data over the at least two terminals when the at least two terminals are idle.
    Type: Application
    Filed: March 27, 2013
    Publication date: October 2, 2014
    Applicant: Allegro Microsystems, Inc.
    Inventors: Chee-Kiong Ng, Christopher Alger, Timothy Reynolds