Abstract: An electronic device, with a touch-sensitive surface and display, displays a user interface at a first display rate. While displaying the user interface, the device detects movement of a touch input across the touch-sensitive surface at a first detection rate that is higher than the first display rate. An application-independent touch processing module sends to an application-specific portion of the first software application touch location information for the touch input that identifies: one or more predicted locations of the touch input on the touch-sensitive surface, and one or more predicted intensity values of the touch input at one or more intensity locations of the touch input on the touch-sensitive surface. The first software application processes the touch location information and updated the user interface accordingly.

Abstract: An electronic device, with a touch-sensitive surface and display, displays a user interface at a first display rate. While displaying the user interface, the device detects, at a first detection rate that is greater than the first display rate, movement of a touch input at a sequence of locations on the touch-sensitive surface; and, at each of a sequence of update times, updates the user interface from a respective current state to a respective next state in accordance with a selected subset of the sequence of locations of the touch input. Each selected subset of the sequence of locations includes a plurality of locations of the touch input.

Abstract: An electronic device, with a touch-sensitive surface and display, displays a user interface at a first display rate. While displaying the user interface in accordance with the first display rate, the device detects movement of a touch input, including detecting the touch input at a first set of sequential locations on the touch-sensitive surface, including a plurality of locations on the touch-sensitive surface, and predicts for the touch input a first set of one or more predicted locations on the touch-sensitive surface based on multiple locations in the first set of sequential locations. The device updates the user interface in accordance with the first set of one or more predicted locations of the touch input on the touch-sensitive surface.

Abstract: An electronic device, with a touch-sensitive surface and display, displays a user interface at a first display rate. While displaying the user interface, the device detects, at a first detection rate that is greater than the first display rate, movement of a touch input at a sequence of locations on the touch-sensitive surface; and, at each of a sequence of update times, updates the user interface from a respective current state to a respective next state in accordance with a selected subset of the sequence of locations of the touch input. Each selected subset of the sequence of locations includes a plurality of locations of the touch input.

Abstract: The embodiments herein describe a mode of applications on the portable electronic device that improves single-handed operation of the devices. For example, the embodiments herein describe an ergonomic mode of an application that displays the graphical user interface (GUI) of the application in a bottom area of the display screen of the electronic device to allow the user to more easily interact with objects. The embodiments herein also describe an ergonomic mode of a keyboard displayed on the display screen of the portable electronic device. During the ergonomic mode of the keyboard, the keyboard is shifted towards a vertical edge of the display screen to allow a user to more easily reach keys of the keyboard that were previously unreachable without the user switching to two handed operation of the device or repositioning the electronic device in the user's hand.