US Patent 9436346 Layer-based user interface

A layer-based user interface for computing devices. In the layer-based user interface, the functionality of the device is distributed to layers and accessed via them. Each layer is composed of a number of components or features that are typically represented by icons. The components can present, for example, data or functions to the user. The components can be interactive or un-interactive. A subset of interactive components is navigational. Navigational components are a special case of the components because of their central role in the user interface concept.