Patents by Inventor Parameswaran Gopal Iyer

Parameswaran Gopal Iyer 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).

  • Method and apparatus for offset correction
    Publication number: 20020113586
    Abstract: A method and apparatus for offset detection and correction is disclosed. In an active amplifier or filter system, or any system that may suffer from unwanted offset, the invention monitors for periods when an input, i.e. reference value, may be predicted or is known. When such a period is detected, the offset detection and correction system records the offset and compares it to the known or predicted reference value. Based on the comparison the amount of offset can be determined. In one configuration, the offset is determined to be greater than or less than the reference value. A digital value is thus provided to correction logic to control an output value. This output value increments or decrements a counter. The output of the counter feeds into a digital to analog converter. The output of the digital to analog converter is provided by into the system that suffers from offset to correct or counter the unwanted offset.
    Type: Application
    Filed: February 22, 2001
    Publication date: August 22, 2002
    Inventors: Edward Shan-Wei Ho, Emil Chao, Parameswaran Gopal Iyer
  • Method and apparatus for automatic equalization of very high frequency multilevel and baseband codes using a high speed analog decision feedback equalizer
    Patent number: 6047026
    Abstract: A decision feedback equalizer circuit employing a current mode finite impulse response (FIR) filter.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: April 4, 2000
    Assignee: OHM Technologies International, LLC
    Inventors: Emil Yu-Ming Chao, Nirav Pravinkumar Dagli, Parameswaran Gopal Iyer, Alarabi Omar Hassen