An enhanced "Camel-back" or "Companion" Digital Organizer (CDO) is described that is designed to interface to a cellular telephone. The CDO is preferably implemented as an add-on component which can be easily attached and detached from a phone by a user and, once in place, can dramatically enhance the...http://www.google.co.uk/patents/US20040097264?utm_source=gb-gplus-sharePatent US20040097264 - Enhanced companion digital organizer for a cellular phone device
