Patents by Inventor Steven Mark Clements

Steven Mark Clements 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 circuit for a MOS device
    Patent number: 7936208
    Abstract: A method and circuit for providing a bias voltage to a MOS device is disclosed. The method and circuit comprise utilizing at least one diode connected circuit to provide a voltage that tracks process, voltage and temperature variations of a semiconductor device. The method and circuit includes utilizing a current mirror circuit coupled to the at least one diode connected circuit to generate a bias voltage for the body of the semiconductor device from the voltage. The bias voltage allows for compensation for the process, voltage and temperature variations.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: May 3, 2011
    Assignee: International Business Machines Corporation
    Inventors: Steven Mark Clements, Hayden C. Cranford, Jr., Amar Chandra Mahadeo Dwarka, John Farley Ewen
  • High speed clock signal duty cycle adjustment
    Patent number: 7863958
    Abstract: A clock signal duty cycle adjustment circuit includes a duty cycle correction circuit that receives a clock input signal that may need duty cycle correction. The duty cycle correction circuit may derive first and second differential clock signals from the clock input signal. The first and second differential clock signals may exhibit respective voltage offsets. The duty cycle correction circuit includes a voltage offset shift circuit that may shift the voltage offset that one of the first and second differential clock signals exhibits to adjust the effective duty cycle of a clock output signal. The duty cycle adjustment circuit derives the clock output signal from the voltage offset adjusted first and second differential clock signals in response to a duty cycle error signal.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: January 4, 2011
    Assignee: International Business Machines Corporation
    Inventors: David William Boerstler, Steven Mark Clements, Jieming Qi
  • HIGH SPEED CLOCK SIGNAL DUTY CYCLE ADJUSTMENT
    Publication number: 20100164580
    Abstract: A clock signal duty cycle adjustment circuit includes a duty cycle correction circuit that receives a clock input signal that may need duty cycle correction. The duty cycle correction circuit may derive first and second differential clock signals from the clock input signal. The first and second differential clock signals may exhibit respective voltage offsets. The duty cycle correction circuit includes a voltage offset shift circuit that may shift the voltage offset that one of the first and second differential clock signals exhibits to adjust the effective duty cycle of a clock output signal. The duty cycle adjustment circuit derives the clock output signal from the voltage offset adjusted first and second differential clock signals in response to a duty cycle error signal.
    Type: Application
    Filed: December 31, 2008
    Publication date: July 1, 2010
    Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, IBM Corporation
    Inventors: David William Boerstler, Steven Mark Clements, Jieming Qi
  • BIAS CIRCUIT FOR A MOS DEVICE
    Publication number: 20100026376
    Abstract: A method and circuit for providing a bias voltage to a MOS device is disclosed. The method and circuit comprise utilizing at least one diode connected circuit to provide a voltage that tracks process, voltage and temperature variations of a semiconductor device. The method and circuit includes utilizing a current mirror circuit coupled to the at least one diode connected circuit to generate a bias voltage for the body of the semiconductor device from the voltage. The bias voltage allows for compensation for the process, voltage and temperature variations.
    Type: Application
    Filed: July 31, 2008
    Publication date: February 4, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Steven Mark Clements, Hayden C. Cranford, JR., Amar Chandra Mahadeo Dwarka, John Farley Ewen