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A digital TV converter box. A digital television adapter (DTA), commonly known as a converter box or decoder box, is a television tuner that receives a digital television (DTV) transmission, and converts the digital signal into an analog signal that can be received and displayed on an analog television set.
Users of analog VCRs, DVRs, or other recording devices which lacked a digital tuner had a unique problem of no longer being able to record programs across multiple channels. In order to record multiple DTV channels, the viewer had to use an external tuner box and set the device to record the output from that box, typically L-1 for the line input.
Then, the converter's tuner will change to the appropriate channel at the time the VCR needs to record. This requires a separate box for the VCR, or the viewer will have to watch what is being recorded. Another, less common option is an "IR blaster", which a recorder can use to control an external tuner, like a cable set-top box or converter box.
It is an involved process because the existing analogue television receivers owned by viewers cannot receive digital broadcasts; viewers must either purchase new digital TVs, or digital converter boxes which have a digital tuner and change the digital signal to an analog signal or some other form of a digital signal (i.e. HDMI) which can be ...
Those with analog pass-through allow both digital and analog television to be viewed on older TVs. Before digital television, passthrough originally existed in VCRs (and later PVRs and DVDRs) that connected to a TV set using RF connector, allowing the TV antenna or cable TV signal to be switched to pass through the VCR, or have VCR output added ...
A typical modern set-top box, along with its remote control - pictured here a digital terrestrial TV receiver by TEAC. A set-top box (STB), also known as a cable box, receiver, or simply box, and historically television decoder or a converter, [1] is an information appliance device that generally contains a TV tuner input and displays output to a television set, turning the source signal into ...
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