Patents by Inventor Hammad Syed

Hammad Syed 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: 11474641
    Abstract: In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period and performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period. The method also includes toggling the charging signal, resulting in a second rising edge of the charging signal during the second synchronization period. The method further includes performing a second negative integration by sensing a second falling edge of the charging signal during a third synchronization period and performing a second positive integration by sensing a third rising edge of the charging signal during a fourth synchronization period. The first integrations are associated with a first sample measurement and the second integrations are associated with a second sample measurement.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: October 18, 2022
    Assignee: Atmel Corporation
    Inventors: Grahame Reynolds, Hammad Syed
  • Publication number: 20210089189
    Abstract: In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period and performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period. The method also includes toggling the charging signal, resulting in a second rising edge of the charging signal during the second synchronization period. The method further includes performing a second negative integration by sensing a second falling edge of the charging signal during a third synchronization period and performing a second positive integration by sensing a third rising edge of the charging signal during a fourth synchronization period. The first integrations are associated with a first sample measurement and the second integrations are associated with a second sample measurement.
    Type: Application
    Filed: October 20, 2020
    Publication date: March 25, 2021
    Inventors: Grahame Reynolds, Hammad Syed
  • Patent number: 10809843
    Abstract: In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period and performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period. The method also includes toggling the charging signal, resulting in a second rising edge of the charging signal during the second synchronization period. The method further includes performing a second negative integration by sensing a second falling edge of the charging signal during a third synchronization period and performing a second positive integration by sensing a third rising edge of the charging signal during a fourth synchronization period. The first integrations are associated with a first sample measurement and the second integrations are associated with a second sample measurement.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 20, 2020
    Assignee: Atmel Corporation
    Inventors: Grahame Reynolds, Hammad Syed
  • Patent number: 10318050
    Abstract: In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period, performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period, and performing a first phase shift by skipping integration during a third synchronization period. The method further includes performing a second positive integration by sensing a second rising edge of the charging signal during a fourth synchronization period, performing a second negative integration by sensing a second falling edge of the charging signal during a fifth synchronization period, and performing a second phase shift by skipping integration during a sixth synchronization period. The first integrations are associated with a first sample measurement and the second integrations are associated with a second sample measurement.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: June 11, 2019
    Assignee: Atmel Corporation
    Inventors: Grahame Reynolds, Hammad Syed
  • Patent number: 10162464
    Abstract: In certain embodiments, a touch sensor controller estimates an area of a display screen that a display controller will update at a first time and estimates an area of a touch sensor that the touch sensor controller is expected to scan at the first time. The touch sensor controller further identifies an expected interference based on a comparison between the update of the estimated area of the display screen by the display controller at the first time and the scan of the estimated area of the touch sensor by the touch sensor controller at the first time. Based on the expected interference, the touch sensor controller suspends, for a first time period, the scan of the estimated area of the touch sensor for touch events based on the expected interference. The touch sensor controller resumes the scan after the first time period.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: December 25, 2018
    Assignee: Atmel Corporation
    Inventors: Samuel Brunet, Grahame Reynolds, Hammad Syed
  • Publication number: 20180173363
    Abstract: In certain embodiments, a touch sensor controller estimates an area of a display screen that a display controller will update at a first time and estimates an area of a touch sensor that the touch sensor controller is expected to scan at the first time. The touch sensor controller further identifies an expected interference based on a comparison between the update of the estimated area of the display screen by the display controller at the first time and the scan of the estimated area of the touch sensor by the touch sensor controller at the first time. Based on the expected interference, the touch sensor controller suspends, for a first time period, the scan of the estimated area of the touch sensor for touch events based on the expected interference. The touch sensor controller resumes the scan after the first time period.
    Type: Application
    Filed: February 5, 2018
    Publication date: June 21, 2018
    Inventors: Samuel Brunet, Grahame Reynolds, Hammad Syed
  • Publication number: 20180143726
    Abstract: In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period, performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period, and performing a first phase shift by skipping integration during a third synchronization period. The method further includes performing a second positive integration by sensing a second rising edge of the charging signal during a fourth synchronization period, performing a second negative integration by sensing a second falling edge of the charging signal during a fifth synchronization period, and performing a second phase shift by skipping integration during a sixth synchronization period. The first integrations are associated with a first sample measurement and the second integrations are associated with a second sample measurement.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 24, 2018
    Inventors: Grahame Reynolds, Hammad Syed
  • Publication number: 20180143727
    Abstract: In certain embodiments, a method includes performing a first positive integration by sensing a first rising edge of a charging signal of a touch sensor during a first synchronization period and performing a first negative integration by sensing a first falling edge of the charging signal during a second synchronization period. The method also includes toggling the charging signal, resulting in a second rising edge of the charging signal during the second synchronization period. The method further includes performing a second negative integration by sensing a second falling edge of the charging signal during a third synchronization period and performing a second positive integration by sensing a third rising edge of the charging signal during a fourth synchronization period. The first integrations are associated with a first sample measurement and the second integrations are associated with a second sample measurement.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 24, 2018
    Inventors: Grahame Reynolds, Hammad Syed
  • Patent number: 9927910
    Abstract: In certain embodiments, a touch sensor controller suspends a scan of a touch sensitive area of a touch sensor for touch events based on an expected interference between the scan and an update of a display screen. After the first time period, touch sensor controller resumes the scan.
    Type: Grant
    Filed: October 30, 2015
    Date of Patent: March 27, 2018
    Assignee: Atmel Corporation
    Inventors: Samuel Brunet, Grahame Reynolds, Hammad Syed
  • Publication number: 20170123552
    Abstract: In certain embodiments, a touch sensor controller suspends a scan of a touch sensitive area of a touch sensor for touch events based on an expected interference between the scan and an update of a display screen. After the first time period, touch sensor controller resumes the scan.
    Type: Application
    Filed: October 30, 2015
    Publication date: May 4, 2017
    Inventors: Samuel Brunet, Grahame Reynolds, Hammad Syed