HD is the new standard of television technology. It provides 1080 lines of resolution compared to the 480 lines of resolution on standard Digital service. HDTV offers wide-screen picture viewing with quality similar to 35mm film along with compact disc (CD) sound quality. From a viewer’s perspective, High Definition translates to better visual and acoustic enjoyment when watching TV. Wide screen is defined as 16:9 ratio of width to height. An analog TV has a 4:3 ratio.