Patents by Inventor Marcus William May

Marcus William May 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).

  • Semiconductor device and system and method of crystal sharing
    Patent number: 7535287
    Abstract: A system includes a first semiconductor device, a second semiconductor device, and an external crystal oscillator. The first semiconductor device includes a source voltage output and an external pin input. The first semiconductor device includes a direct current-to-direct current (DC-DC) converter circuit that provides the source voltage output. The second semiconductor device includes a source voltage input that is coupled to the source voltage output of the first semiconductor device and includes a clock signal output. The external crystal oscillator is coupled via an input of the second semiconductor device to a first oscillator clock generation circuit.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: May 19, 2009
    Assignee: Sigmatel, Inc.
    Inventors: Michael R. May, Marcus William May
  • Semiconductor device and system and method of crystal sharing
    Publication number: 20070279027
    Abstract: A system includes a first semiconductor device, a second semiconductor device, and an external crystal oscillator. The first semiconductor device includes a source voltage output and an external pin input. The first semiconductor device includes a direct current-to-direct current (DC-DC) converter circuit that provides the source voltage output. The second semiconductor device includes a source voltage input that is coupled to the source voltage output of the first semiconductor device and includes a clock signal output. The external crystal oscillator is coupled via an input of the second semiconductor device to a first oscillator clock generation circuit.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 6, 2007
    Applicant: SIGMATEL, INC.
    Inventors: Michael R. May, Marcus William May