Selected visual content is unobtrusively presented on a computing system display, so as not to obscure or prevent access to underlying content. The selected visual content may be designated from among various types of visual content by a user or by a program. The selected visual content is maintained...http://www.google.de/patents/US7429993?utm_source=gb-gplus-sharePatent US7429993 - Method and system for presenting functionally-transparent, unobtrusive on-screen windows
