High-definition television

High-definition television (HDTV) describes a television or video system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since at least 1933; in more recent times, it refers to the generation following standard-definition television (SDTV). It is the standard video format used in most broadcasts: terrestrial broadcast television, cable television, and satellite television.

Extends: [High-definition television](https://wikipedia.org.ai/High-definition television), [Telecommunications-related introductions in 1936](https://wikipedia.org.ai/Telecommunications-related introductions in 1936), [Telecommunications-related introductions in 1990](https://wikipedia.org.ai/Telecommunications-related introductions in 1990), ATSC, [Consumer electronics](https://wikipedia.org.ai/Consumer electronics)