Patents by Inventor Dal Yihong

Dal Yihong 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).

  • Patent number: 8174248
    Abstract: Systems and methods for bit stuffing pulse width modulation are provided. Example embodiments of the systems and methods of bit stuffing pulse width modulation disclosed herein may allow for a significant reduction in the size of the bootstrap capacitor while giving up only a small percentage of output drive, and reduce die space. Included in such systems and methods is the ability to digitally detect inactivity on the PMW signals for a class D power amplifier, and to digitally insert small charge pulses at a fairly low repetition rate relative to the normal switching frequency. The low repetition rate may preserve the maximum output power while still allowing enough charge to transfer to the bootstrap capacitor.
    Type: Grant
    Filed: May 16, 2009
    Date of Patent: May 8, 2012
    Assignee: Texas Instruments Incorporated
    Inventors: Daniel Mavencamp, Dal Yihong, Abdelhalim Alsharqawi, Steve Martindell