Chyron

[Little_Girl]

(n.) - television [graphics] that [occupy] the lower area of a TV screen, originally coined by the [Chyron] Corporation which develops and manufactures on-screen graphics; now a commonly-used term for such graphics on TV broadcasts worldwide

[Cami]

An electronically generated caption superimposed on a television or cinema screen.

[Michiko]

the brand name for a strip with text on it that covers the bottom part of the image on a television screen: