Patents Assigned to UICO, Inc.
  • Capacitive touch sensing system using switched capacitor analog signal processing
    Patent number: 9817537
    Abstract: A capacitive touch sensing system for a capacitive touch panel uses analog circuitry to perform capacitive sensing and signal processing. The system operates over several time phases to charge and discharge a capacitive sensor of the touch panel and determine its capacitance. The system actively reconfigures and reuses circuit components over the several phases to minimize circuit size, complexity and power usage. The result is greatly reduced chip area by performing major signal processing functions in a small piece of analog circuitry. This reduces cost by combining the signal processing functions into a small, time-sequenced switched-capacitor analog circuit.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: November 14, 2017
    Assignee: UICO, Inc.
    Inventors: Jyotindra Shakya, Kenneth C. Crandall, Hiten Singh Randhawa
  • Capacitive touch screen having dynamic capacitance control and improved touch sensing
    Patent number: 9001083
    Abstract: Methods and apparatus for improving the sensing performance of a capacitive touch screen sensing device. The electrical potential of conductive structures proximate capacitive touch pads of the sensing device is altered to compensate for the effect of parasitic capacitance, based on external conditions such as water on the touch screen or an intervening user worn glove. The compensation for parasitic capacitance improves the signal to noise ratio and therefore the sensing performance of the device.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: April 7, 2015
    Assignee: UICO, Inc.
    Inventor: Bahar N. Wadia
  • CAPACITIVE TOUCH SCREEN HAVING DYNAMIC CAPACITANCE CONTROL AND IMPROVED TOUCH SENSING
    Publication number: 20150022498
    Abstract: Methods and apparatus for improving the sensing performance of a capacitive touch screen sensing device. The electrical potential of conductive structures proximate capacitive touch pads of the sensing device is altered to compensate for the effect of parasitic capacitance, based on external conditions such as water on the touch screen or an intervening user worn glove. The compensation for parasitic capacitance improves the signal to noise ratio and therefore the sensing performance of the device.
    Type: Application
    Filed: October 7, 2014
    Publication date: January 22, 2015
    Applicant: UICO, INC.
    Inventor: Bahar N. Wadia
  • Capacitive touch screen having dynamic capacitance control and improved touch-sensing
    Patent number: 8866793
    Abstract: Methods and apparatus for improving the sensing performance of a capacitive touch screen sensing device. The electrical potential of conductive structures proximate capacitive touch pads of the sensing device is altered to compensate for the effect of parasitic capacitance, based on external conditions such as water on the touch screen or an intervening user worn glove. The compensation for parasitic capacitance improves the signal to noise ratio and therefore the sensing performance of the device.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: October 21, 2014
    Assignee: UICO, Inc.
    Inventor: Bahar N. Wadia