Resources Contact Us Home
Touch screen display circuit and voltage measurement circuit

Image Number 19 for United States Patent #6961015.

A touch screen display circuit is disclosed which includes means for measuring a voltage at two separate input terminals which represent a location on a touch screen where pressure was applied. The display circuit includes means for defining a time period during which the voltage is measured and means for converting the measured voltage to a digital value. The means for measuring a voltage includes an amplifier and a capacitor which are configured as an integrator. The means for converting comprises a counter that measures an amount of time required for the capacitor to dissipate its charge. A touch screen display system having a touch screen which includes first and second sheets of conductive materials positioned in a spaced apart relationship is disclosed. The touch screen display system utilizes a means coupled to the first and second sheets for measuring a voltage at two separate input terminals, a means for defining a time period during which the voltage is measured and a means for converting the voltage to a digital value.

  Recently Added Patents
System and method for updating firmware
Feedback method and processing system for policy installation failures
High conductive water-based silver ink
Label with surface ornamentation
Control device
Systems and methods for authorizing, authenticating and accounting users having transparent computer access to a network using a gateway device
Bi-directional pattern dependent noise prediction
  Randomly Featured Patents
Circuit arrangement for a module in the exchange of a digital TDM telecommunications network
Lubricating compositions
Digital signal reproduction apparatus for reading magneto-optical disks
Actuator arrangement for a motor vehicle clutch
Garment hanger with clip
Breakaway extension cord for preventing electrical plug damage
Printer and method of controlling the same
Core for snowboard
Code table reduction apparatus for variable length decoder
Blind and shade cutting center with center locating system