Patents by Inventor Xiaochun Zhao

Xiaochun Zhao 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).

  • LOW DROPOUT REGULATOR WITH MULTIPLEXED POWER SUPPLIES
    Publication number: 20110278936
    Abstract: Generally, with low drop out (LDO) regulators that use multiplexed power supplies, the transistors within the regulator can use a substantial amount of area. Here, a regulator is provided that uses a multiplexer to commonly control the back-gates of multiple power transistors within the LDO. By doing this, the area overhead that would normally be present with these switches (of the multiplexer) can be dramatically reduced without sacrificing performance.
    Type: Application
    Filed: May 13, 2010
    Publication date: November 17, 2011
    Applicant: Texas Instruments Incorporated
    Inventors: Abidur Rahman, Xiaochun Zhao
  • DIGITAL SUPPRESSION OF SPIKES ON AN I2C BUS
    Publication number: 20110260766
    Abstract: An apparatus that is adapted to receive signals from an Inter-Integrated Circuit (I2C) bus is provided. The apparatus comprises a serial data (SDA) filter, a serial clock (SCL) filter, I2C interface logic, and operational circuitry. The SDA filter is adapted to receive an SDA signal from the I2C bus and includes a hold terminal and a disable terminal. The hold terminal of the SDA filter issues a disable signal when a transient in the SDA signal is detected. The SCL filter is adapted to receive an SCL signal from the I2C bus and includes a hold terminal and a disable terminal. The hold terminal of the SCL filter issues a disable signal when a transient in the SCL signal is detected. Additionally, the hold terminal of the SCL filter is coupled to the disable terminal of the SDA filter, and the hold terminal of the SDA filter is coupled to the disable terminal of the SCL filter.
    Type: Application
    Filed: July 7, 2011
    Publication date: October 27, 2011
    Applicant: Texas Instruments Incorporated
    Inventors: Stuart M. Horton, Xiaochun Zhao
  • Digital suppression of spikes on an 1C bus
    Patent number: 7999596
    Abstract: An apparatus that is adapted to receive signals from an Inter-Integrated Circuit (I2C) bus is provided. The apparatus comprises a serial data (SDA) filter, a serial clock (SCL) filter, I2C interface logic, and operational circuitry. The SDA filter is adapted to receive an SDA signal from the I2C bus and includes a hold terminal and a disable terminal. The hold terminal of the SDA filter issues a disable signal when a transient in the SDA signal is detected. The SCL filter is adapted to receive an SCL signal from the I2C bus and includes a hold terminal and a disable terminal. The hold terminal of the SCL filter issues a disable signal when a transient in the SCL signal is detected. Additionally, the hold terminal of the SCL filter is coupled to the disable terminal of the SDA filter, and the hold terminal of the SDA filter is coupled to the disable terminal of the SCL filter.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: August 16, 2011
    Assignee: Texas Instruments Incorporated
    Inventors: Stuart M. Horton, Xiaochun Zhao
  • DIGITAL SUPPRESSION OF SPIKES ON AN I2C BUS
    Publication number: 20100244919
    Abstract: An apparatus that is adapted to receive signals from an Inter-Integrated Circuit (I2C) bus is provided. The apparatus comprises a serial data (SDA) filter, a serial clock (SCL) filter, I2C interface logic, and operational circuitry. The SDA filter is adapted to receive an SDA signal from the I2C bus and includes a hold terminal and a disable terminal. The hold terminal of the SDA filter issues a disable signal when a transient in the SDA signal is detected. The SCL filter is adapted to receive an SCL signal from the I2C bus and includes a hold terminal and a disable terminal. The hold terminal of the SCL filter issues a disable signal when a transient in the SCL signal is detected. Additionally, the hold terminal of the SCL filter is coupled to the disable terminal of the SDA filter, and the hold terminal of the SDA filter is coupled to the disable terminal of the SCL filter.
    Type: Application
    Filed: March 26, 2009
    Publication date: September 30, 2010
    Applicant: Texas Instruments Incorporated
    Inventors: Stuart M. Horton, Xiaochun Zhao