Set Top Box or STB is the electronic device that helps to see the Television programmes in digital quality. It is a complex embedded system that connects the external source of signals to the television and converts the signals into contents. It has around 30 hardware blocks and a number of software drivers. Modern STBs are capable of features like time shift mode viewing, recording, video on demand, HD definition Video output etc. The Set Top Box connects the television and an external source of signal and converts the signals into video and audio contents to display on the screen. The signals from the cable are decoded by the Set To box since the TV cannot understand the digital data.

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