We combine that with a couple of other sensor technologies to get a pretty comprehensive picture of what these guys are doing, what they're capable of.
In addition, the Optical Picture (OPC) feature helps save power by using a sensor on the front of the TV to detect ambient room light, and automatically adjusts TV brightness for the best picture.
Engineers at Duke University have come up something that falls more into the latter category: a metamaterial imaging sensor that doesn't require a lens to generate a picture.