Patents by Inventor Hashem Farrokh

Hashem Farrokh 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).

  • Carry-save multiplier/accumulator system and method
    Patent number: 6704761
    Abstract: A method is described for providing an improved multiplier/accumulator which utilizes less processing resources than such devices which are known in the prior art. The methodology operates to utilize the processing resources of a multiplier-accumulator combination on a cooperative basis, with the result that at least one adder stage in such a combination can be eliminated. The method includes the processing by the accumulator of certain terms that would otherwise be processed by the multiplier.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: March 9, 2004
    Assignee: Lucent Technologies Inc.
    Inventors: Hashem Farrokh, Kalavai J. Raghunath, Subramanian Naganathan
  • Programmable RC filter
    Patent number: 6437639
    Abstract: A programmable resistive-capacitive filter circuit enabling on-chip digital control of the frequency response includes a switched resistive type voltage divider network where one of the resistors forms an element of an RC filter and wherein the voltage divider additionally provides a DC bias on an output terminal. One preferred embodiment of the invention is directed to a programmable bandpass filter including MOSFET type semiconductor devices which are utilized as switched resistive elements of the filter.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: August 20, 2002
    Assignee: Lucent Technologies Inc.
    Inventors: Thanh Van Nguyen, Hashem Farrokh
  • Programmable RC filter
    Publication number: 20020101280
    Abstract: A programmable resistive-capacitive filter circuit enabling on-chip digital control of the frequency response includes a switched resistive type voltage divider network where one of the resistors forms an element of an RC filter and wherein the voltage divider additionally provides a DC bias on an output terminal. One preferred embodiment of the invention is directed to a programmable bandpass filter including MOSFET type semiconductor devices which are utilized as switched resistive elements of the filter.
    Type: Application
    Filed: March 26, 2002
    Publication date: August 1, 2002
    Applicant: LUCENT TECHNOLOGIES INC.
    Inventors: Thanh Van Nguyen, Hashem Farrokh
  • Equalization circuit for unknown QAM constellation size
    Patent number: 6108375
    Abstract: In a digital receiver, an equalizing unit includes a power controller adapted to scale received components of a quadrature amplitude modulated signal based on a constellation size of the quadrature amplitude modulated signal. Alternatively, a method of scaling components of a quadrature amplitude modulated signal includes the steps of searching the quadrature amplitude modulated signal to determine a constellation size, and scaling the components of the quadrature amplitude modulated signal based on the constellation size.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: August 22, 2000
    Assignee: Lucent Technologies Inc.
    Inventors: Hashem Farrokh, Subramanian Naganathan, Kalavai Janardhan Raghunath, Marta M. Rambaud