Patents by Inventor Syed F. Ahmad

Syed F. Ahmad 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: 9280245
    Abstract: An apparatus configured to determine an approximate position of an object utilizing mutual-capacitance sensing capabilities during a first mode of operation and determining one or more attributes of the object utilizing self-capacitance sensing capabilities during a second mode of operation is disclosed. The apparatus includes a touch panel controller configured to operatively couple to a touch panel sensor. The touch panel sensor includes a plurality of drive electrodes and at least one sense electrode. A plurality of nodes are formed at the intersections of the plurality of drive electrodes and the at least one sense electrode. The touch panel controller is configured to determine an approximate position of an object performing a touch event over the touch panel sensor during the first mode of operation and to determine one or more attributes of the object during the second mode of operation.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: March 8, 2016
    Assignee: Qualcomm Technologies, Inc.
    Inventors: Ali Ekici, Ozan Erdogan, Stephen C. Gerber, Syed F. Ahmad
  • Patent number: 9122361
    Abstract: A capacitive touch panel is tested for the presence or absence of short and open circuits in drive and sense lines without the use of a tool that touches the surface of the panel. During a first stage of testing, drive lines of the touch panel are sequentially driven while the remaining drive lines are floated. Sense lines are read to indicate whether a driven drive line is shorted to an adjacent drive line, an open circuit, or coupled to a sense line that is an open circuit. During a second stage of testing, drive lines are driven while alternate sense lines are floated or enabled. The signals on the enabled sense lines are acquired to indicate whether the enabled sense lines are shorted to adjacent sense lines. This second stage can be repeated, switching the roles of the sense lines, to determine the locations of short and/or open circuits.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: September 1, 2015
    Assignee: Qualcomm Technologies, Inc.
    Inventors: Guozhong Shen, Bart DeCanne, Kenneth W. Knox, Muhammad Umair, Syed F. Ahmad
  • Publication number: 20140240280
    Abstract: An apparatus configured to determine an approximate position of an object utilizing mutual-capacitance sensing capabilities during a first mode of operation and determining one or more attributes of the object utilizing self-capacitance sensing capabilities during a second mode of operation is disclosed. The apparatus includes a touch panel controller configured to operatively couple to a touch panel sensor. The touch panel sensor includes a plurality of drive electrodes and at least one sense electrode. A plurality of nodes are formed at the intersections of the plurality of drive electrodes and the at least one sense electrode. The touch panel controller is configured to determine an approximate position of an object performing a touch event over the touch panel sensor during the first mode of operation and to determine one or more attributes of the object during the second mode of operation.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 28, 2014
    Applicant: Maxim Integrated Products, Inc.
    Inventors: Ali Ekici, Ozan E. Edrogan, Stephen C. Gerber, Syed F. Ahmad
  • Publication number: 20120293455
    Abstract: A capacitive touch panel is tested for the presence or absence of short and open circuits in drive and sense lines without the use of a tool that touches the surface of the panel. During a first stage of testing, drive lines of the touch panel are sequentially driven while the remaining drive lines are floated. Sense lines are read to indicate whether a driven drive line is shorted to an adjacent drive line, an open circuit, or coupled to a sense line that is an open circuit. During a second stage of testing, drive lines are driven while alternate sense lines are floated or enabled. The signals on the enabled sense lines are acquired to indicate whether the enabled sense lines are shorted to adjacent sense lines. This second stage can be repeated, switching the roles of the sense lines, to determine the locations of short and/or open circuits.
    Type: Application
    Filed: May 15, 2012
    Publication date: November 22, 2012
    Applicant: MAXIM INTEGRATED PRODUCTS, INC.
    Inventors: Guozhong Shen, Bart DeCanne, Kenneth W. Knox, Muhammad Umair, Syed F. Ahmad