Patents by Inventor Thomas Ryan Harrington

Thomas Ryan Harrington 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).

  • Output buffer for single-pin crystal oscillators
    Patent number: 10848101
    Abstract: An output buffer for an oscillator circuit and associated methodology. The output buffer has inverters and at least one negative feedback loop coupled to corresponding inverters. The negative feedback loop of the circuit is disabled in response to a control signal until one or more of a defined level of oscillation and a defined period of time is reached during start-up of the oscillator circuit, and is thereafter enabled. At least one of the inverters has at least one second negative feedback loop coupled to the corresponding inverter. An amount of feedback provided by the second negative feedback loop is adjustable in response to a control signal, where a first feedback level is present until a defined level of oscillation and/or a defined period of time is reached during start-up, a second feedback level is thereafter present in, and the first feedback level is less than the second feedback level.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 24, 2020
    Assignee: Arm Limited
    Inventors: Alexandru Aurelian Ciubotaru, Dan Laurentiu Zupcau, Thomas Ryan Harrington
  • OUTPUT BUFFER FOR SINGLE-PIN CRYSTAL OSCILLATORS
    Publication number: 20200177128
    Abstract: An output buffer for an oscillator circuit and associated methodology. The output buffer has inverters and at least one negative feedback loop coupled to corresponding inverters. The negative feedback loop of the circuit is disabled in response to a control signal until one or more of a defined level of oscillation and a defined period of time is reached during start-up of the oscillator circuit, and is thereafter enabled. At least one of the inverters has at least one second negative feedback loop coupled to the corresponding inverter. An amount of feedback provided by the second negative feedback loop is adjustable in response to a control signal, where a first feedback level is present until a defined level of oscillation and/or a defined period of time is reached during start-up, a second feedback level is thereafter present in, and the first feedback level is less than the second feedback level.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 4, 2020
    Applicant: Arm Limited
    Inventors: Alexandru Aurelian Ciubotaru, Dan Laurentiu Zupcau, Thomas Ryan Harrington