Samsung UN55ES8000G E-Manual page 709

did in the store.
Store displays are all tuned to digital,
HD (high definition) channels.
If you have an analog cable/set top
box, upgrade to a digital set top box.
Use HDMI or Component cables to
deliver HD (high definition) picture
quality.
N
Many HD channels are up scaled
from SD (Standard Definition)
contents. Look for a channel that is