Patents by Inventor Håkon Børli

Håkon Børli 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).

  • Fast startup crystal oscillator circuit with programmable injection time and adaptive startup time to achieve high amplitude oscillation
    Patent number: 11705861
    Abstract: A first three state driver injects a first clock signal into a crystal through an input node during a startup phase of a crystal oscillator and a second three state driver injects a second signal into the crystal through an output node during the startup phase. The first and second signals are anti-phase signals. The crystal oscillator circuit includes a first amplifier that is used during starting up and steady-state operation and includes a second amplifier. The injection through the input and output nodes is disabled after a fixed time. After injection ends, the second amplifier is turned on if voltage on the output node has reached a desired voltage and left off otherwise. If the second amplifier is turned on, the second amplifier is turned off when the voltage on the output node reaches the desired voltage.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: July 18, 2023
    Assignee: Silicon Laboratories Inc.
    Inventors: Mohamed M. Elkholy, Francesco Barale, Tiago Pinto Guia Marques, Steffen Skaug, Håkon Børli