Mohammed Hanif Usman

US Patent:

20090328048, Dec 31, 2009

Filed:

Dec 16, 2008

Appl. No.:

12/335644

Inventors:

Shoab Ahmad Khan - Islamabad, PK
M. Mohsin Rehmatullah - Islamabad, PK
Sherjil Ahmed - Irvine CA, US
Mohammed Usman - Mission Viejo CA, US
Mohammad Ahmad - Irvine CA, US

Assignee:

Quartics, Inc. - Irvine CA

International Classification:

G06F 9/46

US Classification:

718102

Abstract:

The present invention is a system on chip architecture having scalable, distributed processing and memory capabilities through a plurality of processing layers. In a preferred embodiment, a distributed processing layer processor comprises a plurality of processing layers, a processing layer controller, and a central direct memory access controller. The processing layer controller manages the scheduling of tasks and distribution of processing tasks to each processing layer. Within each processing layer, a plurality of pipelined processing units (PUs), specially designed for conducting a defined set of processing tasks, are in communication with a plurality of program memories and data memories. One application of the present invention is in a media gateway that is designed to enable the communication of media across circuit switched and packet switched networks. The hardware system architecture of the said novel gateway is comprised of a plurality of DPLPs, referred to as Media Engines that are interconnected with a Host Processor or Packet Engine, which, in turn, is in communication with interfaces to networks. Each of the PUs within the processing layers of the Media Engines are specially designed to perform a class of media processing specific tasks, such as line echo cancellation, encoding or decoding data, or tone signaling.

US Patent:

20110085656, Apr 14, 2011

Filed:

Jun 30, 2010

Appl. No.:

12/828242

Inventors:

Mohammed Usman - Mission Viejo CA, US
Jon Laurent Pang - Huntington Beach CA, US
Amjad Luna - Lahore, PK
Imtinan Elahi - Lake Forest CA, US

International Classification:

H04M 9/08

US Classification:

37940608

Abstract:

The present invention provides for adaptive filters that have improved computational and memory bandwidth proprieties. When applied to telecommunication applications, the present invention additionally provides for improved methods and systems of canceling echoes. In one embodiment of the adaptive filter of the present invention, a filter, preferably an adaptive finite impulse response (FIR) filter, of an appropriate length, N, is chosen. Once the filter is chosen, convergence is achieved and the filter is converted to an infinite impulse response (IIR) filter. In the course of operation, data is received from an input source and used to adapt the zeroes of the IIR filter using the least means square (LMS) approach, keeping the poles fixed. The adaptation process generates a set of converged filter coefficients that are then applied to the input signal to create a modified signal used to filter the data. The novel adaptive filter method and system presented herein can be used to improve the calculation of the echo impulse response by, among other things, reducing the computational complexity and memory requirements of the coefficient calculation conducted within the adaptive filter.

US Patent:

20090201989, Aug 13, 2009

Filed:

Oct 31, 2008

Appl. No.:

12/263129

Inventors:

Sherjil Ahmed - Irvine CA, US
Mohammed Usman - Mission Viejo CA, US
Mohammad Ahmad - Irvine CA, US

International Classification:

H04N 7/12
H04N 7/26

US Classification:

37524008, 37524025, 375E07027, 375E07026

Abstract:

The present invention provides for an improved video compression and encoding that optimizes and enhances the overall speed and efficiency of processing video data. In one embodiment, the video codec transmits the output of an entropy decoder to a lossless compressor and memory before going through inverse discrete cosine transformation and motion compensation blocks.