Patents by Inventor Ahmed E. Hashim

Ahmed E. Hashim 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).

  • Methods and apparatus for a digital pulse width modulator using multiple delay locked loops
    Patent number: 7439787
    Abstract: A pulse width modulation circuit includes a first delay-locked loop (DLL) circuit and a second DLL circuit. The first DLL is coupled to a first multiplexer and has a first set of delay stages, wherein the first DLL circuit is configured to receive an input clock signal and, through the first multiplexer, produce a first stage delay signal associated with the first set of delay stages, wherein the first stage delay signal leads the input clock signal by a first duration.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: October 21, 2008
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Ahmed E. Hashim, John M. Pigott
  • Methods and apparatus for a digital pulse width modulator using multiple delay locked loops
    Publication number: 20080024179
    Abstract: A pulse width modulation circuit includes a first delay-locked loop (DLL) circuit and a second DLL circuit. The first DLL is coupled to a first multiplexer and has a first set of delay stages, wherein the first DLL circuit is configured to receive an input clock signal and, through the first multiplexer, produce a first stage delay signal associated with the first set of delay stages, wherein the first stage delay signal leads the input clock signal by a first duration.
    Type: Application
    Filed: July 27, 2006
    Publication date: January 31, 2008
    Inventors: Ahmed E. Hashim, John M. Pigott