A communication navigation system is provided with a communication center apparatus (3x) and a communication terminal apparatus (5x) for transmitting/receiving information via a communication network (1x). The communication center apparatus includes a database (302) for storing data to be updated to...http://www.google.ca/patents/US20040044752?utm_source=gb-gplus-sharePatent US20040044752 - Communication system and method, communication terminal apparatus, communication center appatatus, and computer program product
