A multiplexing apparatus for multiplexing a first stream and a second stream for output includes a first input unit supplied with a first material; a second input unit supplied with a second material; a first selecting unit for selecting one of the first material and the second material as material of...http://www.google.com.au/patents/US7120163?utm_source=gb-gplus-sharePatent US7120163 - Multiplexing apparatus and method, image output apparatus and method, and recording medium
