Patents by Inventor Richardson Jeyapaul

Richardson Jeyapaul 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).

  • Automatic environmental compensation of capacitance based proximity sensors
    Patent number: 8050876
    Abstract: Improved capacitive sensor operation is achieved with improved discrimination between environmental drift and apparent drift attributable to human proximity to the sensor. A proximity algorithm detects conditions interpreted as indicating a user is close to, but not touching, a sensor. When such proximity is detected, ambient value calibration is halted, thereby avoiding treating the human's proximity as environmental drift requiring compensation and preventing miscalculation of calibration. The proximity algorithm employs two moving-average filters (implemented in hardware or software) to monitor the CDC output values over time and to make appropriate adjustments to a signal representing the ambient, while distinguishing environmental drift from proximity-induced pseudo-drift.
    Type: Grant
    Filed: July 18, 2006
    Date of Patent: November 1, 2011
    Assignee: Analog Devices, Inc.
    Inventors: Ken Feen, Laurent Coquerel, Richardson Jeyapaul, John Anthony Cleary
  • Automatic environmental compensation of capacitance based proximity sensors
    Publication number: 20070032967
    Abstract: Improved capacitive sensor operation is achieved with improved discrimination between environmental drift and apparent drift attributable to human proximity to the sensor. A proximity algorithm detects conditions interpreted as indicating a user is close to, but not touching, a sensor. When such proximity is detected, ambient value calibration is halted, thereby avoiding treating the human's proximity as environmental drift requiring compensation and preventing miscalculation of calibration. The proximity algorithm employs two moving-average filters (implemented in hardware or software) to monitor the CDC output values over time and to make appropriate adjustments to a signal representing the ambient, while distinguishing environmental drift from proximity-induced pseudo-drift.
    Type: Application
    Filed: July 18, 2006
    Publication date: February 8, 2007
    Applicant: Analog Devices, Inc.
    Inventors: Ken Feen, Laurent Coquerel, Richardson Jeyapaul, John Cleary