Patents by Inventor Mariam Motamed

Mariam Motamed 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: 6324387
    Abstract: A controlled receive device is disclosed having an amplifier circuit, which receives an input signal, and a control circuit which receives the input signal and outputs a controlled signal to a receiver. The receiver outputs an output signal. A controller varies the gain of the amplifier circuit in response to levels of the controlled signal and the output signal. The control circuit outputs a controlled indicator signal indicative of a level of the controlled signal and the receiver outputs an output indicator signal indicative of the output signal level. The controlled indicator signal and the output indicator signal are compared using comparators, to respective reference or threshold levels for producing control signals used by the controller for varying the amplifier gain.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: November 27, 2001
    Assignee: Philips Electronics N.A. Corp.
    Inventors: Farbod Kamgar, Antoine J. Rouphael, Mariam Motamed
  • Patent number: 6205167
    Abstract: A pseudo-noise generator (516) generates an on-time component, an early component and a late component of a pseudo-noise code signal in response to an error signal. The on-time component is routed to a deinterleave and demodulate device (210) which demodulates and decodes baseband signals from received spread spectrum signals. An adder (518) subtracts the early component from the late component to form a summation signal. A multiplier (520) multiplies the summation with the received signal to form a product signal. An integrator (522) integrates the product signal to form the error signal. The error signal is fed back into the pseudo-noise generator (516) to fine tune the on-time component, the early component and the late component of the pseudo-noise code signal. As a result, a spread spectrum signal is demodulated and decoded using only one correlator (504) instead of two.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: March 20, 2001
    Assignee: Philips Electronics North America Corporation
    Inventors: Farbod Kamgar, Mariam Motamed, Antoine Jean Rouphael