Abstract: Disclosed herein are various embodiments of a capacitive touchscreen system that is capable of sensing finger touches made on a capacitive touchscreen according to various scanning modes that reduce power consumption of the capacitive touchscreen system. The disclosed power saving scanning modes are modally focused, and can be used not only to reduce system power consumption, but also to enhance the user experience with the capacitive touchscreen system.

Abstract: Disclosed are various embodiments of a capacitive touchscreen or touch panel system comprising a controller operably connected to a first plurality of drive electrodes and a second plurality of sense electrodes. The controller includes a noise disruption detector circuit, a user noise source detector/anticipator circuit, clock control logic circuitry operably connected to the noise disruption detector circuit and to the user noise source detector/anticipator circuit, at least one static-clocked digital filter circuit operably connected to and controlled by the clock control logic circuitry, a central processing unit (CPU) operably connected to the clock control logic circuitry, firmware operably connected to the CPU; and touch position circuitry configured to deliver signals indicative of touch positions on the touchscreen to a host controller.

Abstract: Disclosed are various embodiments of a capacitive touchscreen or touch panel system comprising a controller operably connected to a first plurality of drive electrodes and a second plurality of sense electrodes. The controller includes a noise disruption detector circuit, a user noise source detector/anticipator circuit, clock control logic circuitry operably connected to the noise disruption detector circuit and to the user noise source detector/anticipator circuit, at least one static-clocked digital filter circuit operably connected to and controlled by the clock control logic circuitry, a central processing unit (CPU) operably connected to the clock control logic circuitry, firmware operably connected to the CPU; and touch position circuitry configured to deliver signals indicative of touch positions on the touchscreen to a host controller.

Abstract: Disclosed herein are various embodiments of a capacitive touchscreen system that is capable of sensing finger touches made on a capacitive touchscreen according to various scanning modes that reduce power consumption of the capacitive touchscreen system. The disclosed power saving scanning modes are modally focused, and can be used not only to reduce system power consumption, but also to enhance the user experience with the capacitive touchscreen system.