Click disambiguation on a touch-sensitive input device

摘要

The surface of an touch-sensitive input device may act as a physical button that the user may push down to perform a click or other operation. For example, the user may push down the surface of the input device with one finger for a left click and push down the surface of the input device with two fingers for a right click. In one aspect, a system for detecting a left click or a right click when the user pushes down the surface of the input device is provided. When the system first detects that the surface of the input device is pushed down, the system may wait for a short period of time before making a determination of whether the user is pushing down the surface with one finger or two fingers. During this time, the system may collect additional information to make a more reliable determination.

主权项

1. A computer-implemented method for reporting button actions generated using a touch-sensitive input device, comprising:
detecting a number of fingers on a surface of the touch-sensitive input device using one or more frames; responsive to detecting two fingers on the surface of the touch-sensitive input device in one of the frames, reporting a first button down action, wherein the first button down action corresponds to a right button down; responsive to detecting one finger on the surface of the touch-sensitive input device in one of the frames, waiting a period of time before reporting any button actions, wherein the period of time comprises a plurality of the frames; responsive to detecting two fingers on the surface of the touch-sensitive input device in one of the frames during the period of time, reporting the first button down action; and responsive to detecting one finger on the surface of the touch-sensitive input device for all of the frames during the period of time, reporting a second button down action, wherein the second button down action corresponds to a left button down.