Patents by Inventor Omar Alnaggar

Omar Alnaggar 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).

  • Current load transient mitigation in display backlight driver
    Patent number: 11823612
    Abstract: A display device include a first light emitting diode (LED), a second LED, and at least one processor of a driver. The processor drives the first LED and the second LED. The processor determines a first pulse width associated with the first LED and a second pulse width associated with the second LED based on a level of brightness to be emitted by the first LED and the second LED. The processor also receives a gap clock and determines a first pulse start time and a first pulse end time for the first LED based on the first pulse width. Moreover, the processor determines a second pulse start time and a second pulse end time for the second LED based on the first pulse end time, the second pulse width, and/or the gap clock, in which the first pulse end time and the second pulse end time are different.
    Type: Grant
    Filed: June 29, 2022
    Date of Patent: November 21, 2023
    Assignee: Apple Inc.
    Inventors: Behzad Mohtashemi, Asif Hussain, Feng Guo, Jingdong Chen, Ming Gu, Mohammad J Navabi-Shirazi, Omar Alnaggar, Venkataraman V Iyer, Yang Zhang
  • Method and apparatus to use active semiconductor interposers for RF signal chain in modular stacked integrated circuits
    Patent number: 11728909
    Abstract: Described are methods and apparatuses pertaining to stacked integrated circuits having application in ultra-low-power and small form factor design, with fast prototyping and mass-production cycle time, including application for millimeter wave radio frequency circuits.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: August 15, 2023
    Assignee: Shenzhen Chipuller Chip Technology Co., LTD
    Inventors: Jawad Nasrullah, Omar Alnaggar, Hanfeng Wang, Mohamed Sameh Mahmoud
  • Systems and methods for increasing a pulse width modulation frequency while preserving resolution
    Patent number: 11694641
    Abstract: Systems and methods for preserving a pulse width modulation (PWM) resolution while increasing the frequency of a pulse width modulation (PWM) clock are provided. An electronic display backlight system may include a backlight element and backlight dimming circuitry. The backlight element may be driven according to a pulse width modulation (PWM) signal over a PWM clock cycle equal to a multiple M of a baseline PWM clock frequency associated with a baseline PWM resolution. The backlight dimming circuitry may receive a brightness code of the baseline PWM resolution and generate the PWM signal at least in part by dividing the brightness code by M.
    Type: Grant
    Filed: July 21, 2022
    Date of Patent: July 4, 2023
    Assignee: Apple Inc.
    Inventors: Behzad Mohtashemi, Mohammad J Navabi-Shirazi, Feng Guo, Omar Alnaggar, Venkataraman V Iyer, Jingdong Chen, Yang Zhang, Ming Gu, Asif Hussain
  • SYSTEMS AND METHODS FOR INCREASING A PULSE WIDTH MODULATION FREQUENCY WHILE PRESERVING RESOLUTION
    Publication number: 20230100812
    Abstract: Systems and methods for preserving a pulse width modulation (PWM) resolution while increasing the frequency of a pulse width modulation (PWM) clock are provided. An electronic display backlight system may include a backlight element and backlight dimming circuitry. The backlight element may be driven according to a pulse width modulation (PWM) signal over a PWM clock cycle equal to a multiple M of a baseline PWM clock frequency associated with a baseline PWM resolution. The backlight dimming circuitry may receive a brightness code of the baseline PWM resolution and generate the PWM signal at least in part by dividing the brightness code by M.
    Type: Application
    Filed: July 21, 2022
    Publication date: March 30, 2023
    Inventors: Behzad Mohtashemi, Mohammad J Navabi-Shirazi, Feng Guo, Omar Alnaggar, Venkataraman V Iyer, Jingdong Chen, Yang Zhang, Ming Gu, Asif Hussain
  • Current Load Transient Mitigation in Display Backlight Driver
    Publication number: 20230085621
    Abstract: A display device include a first light emitting diode (LED), a second LED, and at least one processor of a driver. The processor drives the first LED and the second LED. The processor determines a first pulse width associated with the first LED and a second pulse width associated with the second LED based on a level of brightness to be emitted by the first LED and the second LED. The processor also receives a gap clock and determines a first pulse start time and a first pulse end time for the first LED based on the first pulse width. Moreover, the processor determines a second pulse start time and a second pulse end time for the second LED based on the first pulse end time, the second pulse width, and/or the gap clock, in which the first pulse end time and the second pulse end time are different.
    Type: Application
    Filed: June 29, 2022
    Publication date: March 23, 2023
    Inventors: Behzad Mohtashemi, Asif Hussain, Feng Guo, Jingdong Chen, Ming Gu, Mohammad J. Navabi-Shirazi, Omar Alnaggar, Venkataraman V. Iyer, Yang Zhang
  • METHOD AND APPARATUS TO USE ACTIVE SEMICONDUCTOR INTERPOSERS FOR RF SIGNAL CHAIN IN MODULAR STACKED INTEGRATED CIRCUITS
    Publication number: 20220239389
    Abstract: Described are methods and apparatuses pertaining to stacked integrated circuits having application in ultra-low-power and small form factor design, with fast prototyping and mass-production cycle time, including application for millimeter wave radio frequency circuits.
    Type: Application
    Filed: April 12, 2022
    Publication date: July 28, 2022
    Applicant: Shenzhen Chipuller Chip Technology Co., LTD.
    Inventors: Jawad Nasrullah, Omar Alnaggar, Hanfeng Wang, Mohamed Sameh Mahmoud
  • Method and apparatus to use active semiconductor interposers for RF signal chain in modular stacked integrated circuits
    Patent number: 11329734
    Abstract: Described are methods and apparatuses pertaining to stacked integrated circuits having application in ultra-low-power and small form factor design, with fast prototyping and mass-production cycle time, including application for millimeter wave radio frequency circuits.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: May 10, 2022
    Assignee: SHENZHEN CHIPULLER CHIP TECHNOLOGY CO., LTD
    Inventors: Jawad Nasrullah, Omar Alnaggar, Hanfeng Wang, Mohamed Sameh Mahmoud
  • METHOD AND APPARATUS TO USE ACTIVE SILICON INTERPOSERS FOR RF SIGNAL CHAIN IN MODULAR STACKED INTEGRATED CIRCUITS
    Publication number: 20210143921
    Abstract: Described are methods and apparatuses pertaining to stacked integrated circuits having application in ultra-low-power and small form factor design, with fast prototyping and mass-production cycle time, including application for millimeter wave radio frequency circuits.
    Type: Application
    Filed: October 16, 2020
    Publication date: May 13, 2021
    Applicant: zGlue, Inc.
    Inventors: Jawad Nasrullah, Omar Alnaggar, Hanfeng Wang, Mohamed Sameh Mahmoud