A non intrusive method for freeing storage of portable devices (such as digital video cameras) when the portable device becomes full. This task is accomplished using a network of servers that communicate via wireless channels with the portable devices (like cameras) within the zones of these servers....http://www.google.de/patents/US6393470?utm_source=gb-gplus-sharePatent US6393470 - Non intrusive automatic remote support for freeing overloaded storage in portable devices
