A transmitter for transmitting at least a first and a second main signal component is disclosed, having at least two input terminals for receiving the at least two input signals. The transmitter comprises multiplexer means for multiplexing the at least two input signals to a first input of matrixing...http://www.google.es/patents/US5818943?utm_source=gb-gplus-sharePatente US5818943 - Transmission and reception of a first and a second main signal component
Transmission and reception of a first and a second main signal component