Patents by Inventor Ratchaneekorn Thamvichai

Ratchaneekorn Thamvichai 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).

  • Infinite impulse response multiplierless digital filter architecture
    Patent number: 7289558
    Abstract: A multiplierless IIR filter incorporates power-of-two coefficients to perform shift operations to reduce space and increase speed. To optimize performance, a genetic algorithm generates the power-of-two coefficients. The filter architecture includes shift registers to receive input samples and previous outputs. A shifter stage is employed to perform shift operations for the input samples and previous outputs based on corresponding power-of-two coefficients. Products are added by parallelism and sequential pipelining to produce an output.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: October 30, 2007
    Assignee: Utah State University
    Inventors: Tamal Bose, Alan W. Shaw, Chirag RamGopal Sharma, Ratchaneekorn Thamvichai
  • Infinite impulse response multiplierless digital filter architecture
    Publication number: 20050008071
    Abstract: A multiplierless IIR filter incorporates power-of-two coefficients to perform shift operations to reduce space and increase speed. To optimize performance, a genetic algorithm generates the power-of-two coefficients. The filter architecture includes shift registers to receive input samples and previous outputs. A shifter stage is employed to perform shift operations for the input samples and previous outputs based on corresponding power-of-two coefficients. Products are added by parallelism and sequential pipelining to produce an output.
    Type: Application
    Filed: July 8, 2003
    Publication date: January 13, 2005
    Inventors: Tamal Bose, Alan Shaw, Chirag Sharma, Ratchaneekorn Thamvichai