Patents by Inventor M. N. Srikanta Swamy

M. N. Srikanta Swamy 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).

  • Transistor-mismatch-insensitive current comparator cell
    Patent number: 6586972
    Abstract: This invention relates to a method and apparatus for converting a current signal into a two-level output voltage depending on a reference current signal. In one embodiment, a first current, which is the reference current signal is applied to the apparatus. A negative feedback sets the output of the apparatus in a certain configuration. Any current signal to be compared to the reference current signal may be then applied. The output voltage level depends on whether the current signal is lower or higher than the reference current signal.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: July 1, 2003
    Assignee: Valorbec, Limited Partnership
    Inventors: Chunyan Wang, Omair M. Ahmad, M. N. Srikanta Swamy
  • Transistor-mismatch-insensitive current comparator cell
    Publication number: 20010035777
    Abstract: This invention relates to a method and apparatus for converting a current signal into a two-level output voltage depending on a reference current signal. In one embodiment, a first current, which is the reference current signal is applied to the apparatus. A negative feedback sets the output of the apparatus in a certain configuration. Any current signal to be compared to the reference current signal may be then applied. The output voltage level depends on whether the current signal is lower or higher than the reference current signal.
    Type: Application
    Filed: February 28, 2001
    Publication date: November 1, 2001
    Inventors: Chunyan Wang, Omair M. Ahmad, M.N. Srikanta Swamy
  • Computational structures for the fast Fourier transform analyzers
    Patent number: 5371696
    Abstract: Since the invention of the radix-2 structure for the computation of the discrete Fourier transform (DFT) by Cooley and Tukey in 1965, the DFT has been widely used for the frequency-domain analysis and design of signals and systems in communications, digital signal processing, and in other areas of science and engineering. While the Cooley-Tukey structure is simpler, regular, and efficient, it has some drawbacks such as more complex multiplications than required by higher-radix structures, and the overhead operations of bit-reversal and data-swapping. The present invention provides a large family of radix-2 structures for the computation of the DFT of a discrete signal of N samples. A member of this set of structures is characterized by two parameters, u and v, where u (u=2.sup.r, r=1,2, . . . , (log.sub.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: December 6, 1994
    Inventors: Duraisamy Sundararajan, M. Omair Ahmad, M. N. Srikanta Swamy