Patents by Inventor Grace I. Chuang

Grace I. Chuang 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).

  • Power OK distribution for multi-voltage chips
    Patent number: 8719598
    Abstract: A method and apparatus for powering up an integrated circuit (IC). An IC includes a plurality of power domains each coupled to receive power from one of a plurality of power sources. Each power domain includes a power-sensing unit. A power-sensing unit in a first one of the plurality of power domains is coupled to receive a first power ok signal from an upstream power domain, and is configured to assert a second power ok signal to be provided to a second power domain. A power-sensing unit in the second power domain is coupled to detect the presence of voltage in the first power domain, and to receive the first power ok signal. When the power-sensing unit in the second power domain has both sensed the presence of power in the first power domain and received the second power ok signal, a third power ok signal is asserted.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: May 6, 2014
    Assignee: Advanced Micro Devices
    Inventors: Shawn Searles, Scott C. Johnson, Grace I. Chuang
  • POWER OK DISTRIBUTION FOR MULTI-VOLTAGE CHIPS
    Publication number: 20100275051
    Abstract: A method and apparatus for powering up an integrated circuit (IC). An IC includes a plurality of power domains each coupled to receive power from one of a plurality of power sources. Each power domain includes a power-sensing unit. A power-sensing unit in a first one of the plurality of power domains is coupled to receive a first power ok signal from an upstream power domain, and is configured to assert a second power ok signal to be provided to a second power domain. A power-sensing unit in the second power domain is coupled to detect the presence of voltage in the first power domain, and to receive the first power ok signal. When the power-sensing unit in the second power domain has both sensed the presence of power in the first power domain and received the second power ok signal, a third power ok signal is asserted.
    Type: Application
    Filed: July 1, 2010
    Publication date: October 28, 2010
    Inventors: Shawn Searles, Scott C. Johnson, Grace I. Chuang
  • Power ok distribution for multi-voltage chips
    Patent number: 7770037
    Abstract: A method and apparatus for powering up an integrated circuit (IC). An IC includes a plurality of power domains each coupled to receive power from one of a plurality of power sources. Each power domain includes a power-sensing unit. A power-sensing unit in a first one of the plurality of power domains is coupled to receive a first power ok signal from an upstream power domain, and is configured to assert a second power ok signal to be provided to a second power domain. A power-sensing unit in the second power domain is coupled to detect the presence of voltage in the first power domain, and to receive the first power ok signal. When the power-sensing unit in the second power domain has both sensed the presence of power in the first power domain and received the second power ok signal, a third power ok signal is asserted.
    Type: Grant
    Filed: April 20, 2006
    Date of Patent: August 3, 2010
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Shawn Searles, Scott C. Johnson, Grace I. Chuang