Patents by Inventor Derek J. HUMMERSTON

Derek J. HUMMERSTON 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).

  • Bias current supply techniques
    Patent number: 10541604
    Abstract: Techniques for supplying a bias current to a load are provided. In certain examples, a circuit can include a level-shift capacitance, a current source, and a load configured to receive a bias current in a first state of the circuit. The current source and the level-shift capacitance can be coupled in series between the load and a supply voltage in the first state. In some examples, during a second state of the circuit, the level-shift capacitance can receive charge, and can be isolated from one of the load or the current source.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: January 21, 2020
    Assignee: Analog Devices Global Unlimited Company
    Inventors: Christopher Peter Hurrell, Derek J. Hummerston
  • BIAS CURRENT SUPPLY TECHNIQUES
    Publication number: 20190363630
    Abstract: Techniques for supplying a bias current to a load are provided. In certain examples, a circuit can include a level-shift capacitance, a current source, and a load configured to receive a bias current in a first state of the circuit. The current source and the level-shift capacitance can be coupled in series between the load and a supply voltage in the first state. In some examples, during a second state of the circuit, the level-shift capacitance can receive charge, and can be isolated from one of the load or the current source.
    Type: Application
    Filed: May 22, 2018
    Publication date: November 28, 2019
    Inventors: Christopher Peter Hurrell, Derek J. Hummerston
  • Voltage controlled current path, a voltage clamp, and an electronic component including a voltage clamp
    Patent number: 10110206
    Abstract: According to a first aspect of this disclosure there is provided a voltage controlled current path. The voltage controlled current path comprises a first stage arranged to conduct current once the voltage at an input node of the first stage exceeds a threshold value. The amount of current that passes through the first stage is a function of the voltage at the input node. A second stage is arranged to pass a current that is a function of the current passing through the first stage.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: October 23, 2018
    Assignee: Analog Devices Global
    Inventors: Derek J. Hummerston, Christopher Peter Hurrell
  • VOLTAGE CONTROLLED CURRENT PATH, A VOLTAGE CLAMP, AND AN ELECTRONIC COMPONENT INCLUDING A VOLTAGE CLAMP
    Publication number: 20160336931
    Abstract: According to a first aspect of this disclosure there is provided a voltage controlled current path. The voltage controlled current path comprises a first stage arranged to conduct current once the voltage at an input node of the first stage exceeds a threshold value. The amount of current that passes through the first stage is a function of the voltage at the input node. A second stage is arranged to pass a current that is a function of the current passing through the first stage.
    Type: Application
    Filed: May 15, 2015
    Publication date: November 17, 2016
    Inventors: Derek J. HUMMERSTON, Christopher Peter HURRELL