Patents by Inventor Wenjung Sheng

Wenjung Sheng 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).

  • Automatically switching power supply sources for a clock circuit
    Patent number: 8671286
    Abstract: In one embodiment, a power supply switching circuit may automatically provide power to a clock circuit from one of an auxiliary power supply and a main power supply, based on a voltage of the main power supply. To provide automatic switching, a switch circuit coupled between the power supplies and the clock circuit may be controlled by a voltage detector, in some embodiments.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: March 11, 2014
    Assignee: Silicon Laboratories Inc.
    Inventors: Wenjung Sheng, Shyam S. Somayajula, Xue-Mei Gong
  • Automatically switching power supply sources for a clock circuit
    Publication number: 20080189565
    Abstract: In one embodiment, a power supply switching circuit may automatically provide power to a clock circuit from one of an auxiliary power supply and a main power supply, based on a voltage of the main power supply. To provide automatic switching, a switch circuit coupled between the power supplies and the clock circuit may be controlled by a voltage detector, in some embodiments.
    Type: Application
    Filed: March 27, 2008
    Publication date: August 7, 2008
    Inventors: Wenjung Sheng, Shyam S. Somayajula, Xue-Mei Gong
  • Clock circuit with programmable load capacitors
    Patent number: 7400206
    Abstract: In one embodiment, the present invention includes methods and apparatus for providing initial control values to programmable load capacitors of an oscillator, such as that of a real time clock circuit. Using the initial values, the real time clock circuit may begin operation, enabling additional circuitry within an integrated circuit to begin operation. This additional circuitry may cause operating values to program the load capacitors to provide a desired reference clock based on a given system's requirements.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: July 15, 2008
    Assignee: Silicon Laboratories Inc.
    Inventors: Wenjung Sheng, Shyam S. Somayajula, Xue-Mei Gong
  • Automatically switching power supply sources for a clock circuit
    Patent number: 7370214
    Abstract: In one embodiment, a power supply switching circuit may automatically provide power to a clock circuit from one of an auxiliary power supply and a main power supply, based on a voltage of the main power supply. To provide automatic switching, a switch circuit coupled between the power supplies and the clock circuit may be controlled by a voltage detector, in some embodiments.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: May 6, 2008
    Assignee: Silicon Laboratories Inc.
    Inventors: Wenjung Sheng, Shyam S. Somayajula, Xue-Mei Gong
  • Automatically switching power supply sources for a clock circuit
    Publication number: 20060218417
    Abstract: In one embodiment, a power supply switching circuit may automatically provide power to a clock circuit from one of an auxiliary power supply and a main power supply, based on a voltage of the main power supply. To provide automatic switching, a switch circuit coupled between the power supplies and the clock circuit may be controlled by a voltage detector, in some embodiments.
    Type: Application
    Filed: March 24, 2005
    Publication date: September 28, 2006
    Inventors: Wenjung Sheng, Shyam Somayajula, Xue-Mei Gong
  • Clock circuit with programmable load capacitors
    Publication number: 20060214738
    Abstract: In one embodiment, the present invention includes methods and apparatus for providing initial control values to programmable load capacitors of an oscillator, such as that of a real time clock circuit. Using the initial values, the real time clock circuit may begin operation, enabling additional circuitry within an integrated circuit to begin operation. This additional circuitry may cause operating values to program the load capacitors to provide a desired reference clock based on a given system's requirements.
    Type: Application
    Filed: March 24, 2005
    Publication date: September 28, 2006
    Inventors: Wenjung Sheng, Shyam Somayajula, Xue-Mei Gong