Patents by Inventor Nabeel Fuad Khan

Nabeel Fuad Khan 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).

  • Ultrasonic lens cleaning system with current sensing
    Patent number: 10401618
    Abstract: Disclosed examples include ultrasonic cleaning systems, driver integrated circuits and methods for cleaning a lens, in which an oscillating drive signal is provided to an ultrasonic transducer and the driver controls the frequency of the drive signal according to a current sense signal representing a drive current flowing in the transducer. The driver sweeps the drive signal frequency and compares the sensed current values with predetermined profiles corresponding to a clean lens and a lens with one or more known contaminants, and generates the drive signal at one or more frequencies corresponding to peaks or valleys of the sensed current values or predetermined frequencies to promote cleaning of the lens.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 3, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yunhong Li, Nabeel Fuad Khan
  • ULTRASONIC LENS CLEANING SYSTEM WITH CURRENT SENSING
    Publication number: 20160266379
    Abstract: Disclosed examples include ultrasonic cleaning systems, driver integrated circuits and methods for cleaning a lens, in which an oscillating drive signal is provided to an ultrasonic transducer and the driver controls the frequency of the drive signal according to a current sense signal representing a drive current flowing in the transducer. The driver sweeps the drive signal frequency and compares the sensed current values with predetermined profiles corresponding to a clean lens and a lens with one or more known contaminants, and generates the drive signal at one or more frequencies corresponding to peaks or valleys of the sensed current values or predetermined frequencies to promote cleaning of the lens.
    Type: Application
    Filed: March 3, 2016
    Publication date: September 15, 2016
    Applicant: Texas Instruments Incorporated
    Inventors: Yunhong Li, Nabeel Fuad Khan