A communication system for a plurality of devices performing communications through a network is provided. The communication system includes a transmitter/receiver, a reception status detector, and a recorder. The transmitter/receiver is included in each of the plurality of devices and configured to...http://www.google.com.au/patents/US7864688?utm_source=gb-gplus-sharePatent US7864688 - Communication system, method of providing information therein and communication device
