Focus-based touch and hover detection

摘要

Embodiments of the present invention disclose a system and method for focus-based touch detection. According to one embodiment, a reference pattern is formed on a surface and an imaging device is configured to detect the reference pattern and the presence of an object within proximity of a contact area of the surface. Furthermore, focus information associated with the reference pattern and/or object is used to determine if the detected object is touching or hovering said contact area.

主权项

1. A system for providing focus-based touch detection in a computing system, the system comprising:
a surface having a reference pattern formed thereon; an imaging device including a field of view capable of simultaneous capture of an image of the reference pattern and an object positioned within proximity of a designated contact area associated with the surface; a processing unit to compare a focus-depth of the reference pattern a focus-depth of the object to determine if the object is touching or hovering the contact area of the surface; a focus-control module configured to adjust a focus-depth associated with the detected object; and wherein the processing unit is coupled to the focus-control module and configured to determine a touch condition or hover condition.