Some test patterns were simply camera feeds of physical ... [Matt] from [Matt’s TV Barn], as the name implies, has an interest in various television technologies, and this is such an iconic ...

LED stands for light-emitting diode, and these make up the backlights of some TVs. The LEDs either sit behind the screen (this is called full array) or at the edge of the screen (known as edge-lit).

Therefore, if the monitor or TV you are watching is properly set up, you can enjoy movies and dramas with cinema-quality picture and sound. In fact, Netflix distributes videos called 'Test ...