the second processing unit 28 to the data buffer 27 wherein the third data stream may be generated by and output from the second decoder 281 or the second post processing unit 282 the data buffer may be a dynamic random access memory dram static random access memory sram flash ram pulse code modulated buffer pcm buffer hard disc or any kind of storage medium the selection unit 29 having two processing paths controlled by the switch sw 1 is similar to the selection unit 18 in fig2 so relevant descriptions are omitted by the first multiplexer 24 and the second multiplexer 25 the first output device and the second output device can be driven by the same input source or different input sources for example if both the first and second output devices play the tv signal the first multiplexer 24 and the second multiplexer 25 may respectively direct the signal from the demodulation unit 22 to the first processing unit 26 and the second processing unit 28 in one application the first output device plays the tv signal by the operating of the data buffer 27 and the second processing unit 28 in some embodiments the first output device is a television speaker and the second output device is a dvd recorder the television can receive a tv signal from the demodulation unit 22 or the data buffer 27 in this case the tv signal is from the data buffer 27 the data buffer 27 receives a processed tv signal from the second decoder 281 or the second post processing unit 282 through the selection unit 29 if the audio signals required by the television and dvd recorder are the same such as a 2 channel audio.