| 摘要 |
Techniques for processing input based on the execution state of computer programs are disclosed. One or more discreet locations (e.g., points, areas, regions, surfaces) of the input device can be effectively selected for an execution state of an instance of computer program code. Only the selected input locations of input devices including those capable of receiving multiple input need to be monitored for input. Input is detected and effectively filtered for visually-based input devices (e.g., touch screens). A visual image representing the input surfaces (or areas) of the input device can be captured as graphics data (e.g., graphics data captured by a camera). Moreover, the captured image can be effectively filtered by only processing the portions of the graphics data that correspond or represent the selected input locations of the input device (i.e., the selected input locations for the current state of execution). One or more Inferred (IR) sources are configured to emit controlled IR light for a multi-touch screen. The IR light can be effectively trapped within the surfaces of the touch screen, whereby the presence of an object that comes in close proximity and/or contact with the touch screen surface disturbs the controlled IR light and causes it to diverge out of the surfaces of the touch screen so that it can be captured by an IR detection mechanism (e.g., a camera). One or more portions of the graphics data captured by the IR detection mechanism are then analyzed to detect the presence of a physical object provided as input. As such, relatively more sophisticated detection mechanism can be utilized and/or system performance can be improved. Input detection mechanisms can be effectively tuned to account for various conditions including wear and tear of the input surfaces. |
