Abstract:
A system and method for enabling a stylus to be used with a touch sensor even after it has failed in an open mode or a closed mode, wherein the tethered stylus activates the inking function when the stylus is in contact with the touch sensor and deactivates the inking function when the stylus is lifted off the surface of the touch sensor when the switch is functioning properly, but when there is a failure of the switch in the open mode or the closed mode, enabling the tethered stylus to continue functioning by using a timer to activate the inking function when the tethered stylus is close enough to be detected by a touch sensor, and to deactivate the inking function when the tethered stylus is no longer detectable by the touch sensor.
Abstract:
A system and method for balancing the capacitive charge on touch sensor electrodes so that every two adjacent routes have the same capacitance as any other adjacent two routes, wherein routing electrodes are spaced further and further apart, or graduated, as they get longer, to thereby balance the capacitance on the touch sensor electrodes without having to add or subtract an offset from each touch sensor electrode.
Abstract:
A system and method for securing access to a device where access is enabled through a touch sensor, the system providing a visual feedback system through a substantially opaque touchpad, thereby enabling a touch sensor without a display to provide visual feedback regarding entry of a password, including a means for restarting entry of a password, and even providing a display of numbered keys.
Abstract:
A system and method for disposing a capacitive proximity and touch sensor in locations where an integrated circuit package may be vulnerable to intrusion by providing electrodes in the packaging that may prevent interception of data obtained by a probe that is brought into proximity of the integrated circuit.