A data transmission system which trains its internal equalizers both in an initialization phase and in a normal communication session. In a transmitter unit, a modulation unit modulates a data signal to be transmitted. This signal is sent out to a telephone subscriber line by a transmitter after being...http://www.google.com.au/patents/US6735244?utm_source=gb-gplus-sharePatent US6735244 - Data transmission system and receiver unit thereof
