Pub. date: 2009 | Online Pub. Date: December 16, 2009 | DOI: 10.4135/9781412972048 | Print ISBN: 9780761929574 | Online ISBN: 9781412972048| Publisher:SAGE Publications, Inc.About this encyclopedia
John Allen Hendricks
Digital television (DTV) enables television to offer consumers better picture and sound quality, expanded programming choices (such as multiple channels of programs at a time), and enhanced closed captioning and interactive video options. By the early 2000s, digital television was having a growing impact on traditional television journalism by expanding the types of programming through multiplexing, changing how journalists appear on camera by modifying makeup techniques and improving news sets to hide imperfections, and modifying traditional camera angles and lighting techniques to hide flaws due to digital clarity. In use since 1941, analog television displayed a picture with a 4:3 aspect ratio while digital television uses a 16:9 aspect ratio. The latter is similar to widescreen theatrical films and allows consumers to play DVD movies in their original wide-screen formats without the letterbox, or black bars, at the top and bottom of the screen. Digital television also utilizes Dolby Digital ...