In an Item-based system, Images (e.g., JPEG, TIFF, bitmap, and so on) are treated as core platform objects (“Image Items” or, more simply, “Images”) and exist in an “Image Schema” that provides an extensible representation of an Image in the system-that is, the characteristics of an Image...http://www.google.co.uk/patents/US20050063083?utm_source=gb-gplus-sharePatent US20050063083 - Systems and methods for the implementation of a digital images schema for organizing units of information manageable by a hardware/software interface system