Patent ID: 11893175
Assignee: MICROCHIP TECHNOLOGY INCORPORATED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method of providing a driven shield, the method comprising:
taking a capacitance measurement at a sensed line during a measurement phase of a measurement acquisition cycle, the measurement phase including a positive pre-charge measurement phase and a negative pre-charge measurement phase;
applying a voltage to at least one non-sensed line during the measurement phase of the measurement acquisition cycle;
holding the voltage at a first voltage rail during one of the positive pre-charge measurement phase and the negative pre-charge measurement phase; and
varying the voltage, in a generally increasing or decreasing manner, from the first voltage rail to a second voltage rail during the other one of the positive pre-charge measurement phase and the negative pre-charge measurement phase.