Signal processing apparatus which avoids repeating same enhancement process

摘要

A signal providing device (210 fig 2) transmits enhancement information related to its signal processing by means of wired or wireless communication to a signal receiving device (200). A signal receiving device (200) uses the enhancement information and controls a signal processing block (200-1). Therefore, since the signal receiving device (200) prevents the signal from being processed repeatedly in the same way, distortion of the signal can be avoided and an optimum signal can be output. The signal providing device 210 may be a set-top-box which forwards a signal to a television.