(redirected from hdtvs)
Also found in: Dictionary, Thesaurus.




High Definition Television


(High Definition TV) HDTV is the high-resolution part of the digital TV standards (see DTV). HDTV may refer to the resolutions or to the TV set, but HD always refers to the resolutions, which were the highest prior to 4K Ultra HD (see 4K TV). See SDTV.

Convert Up and Down
Using algorithms to fill in the missing lines, HDTV sets upconvert standard definition (SD) content, such as old movies or DVDs, to the HD resolution the HDTV supports (see table below). HD programs are broadcast in 720p and 1080i, and 720p HDTVs downconvert 1080i broadcasts to 720p. In addition, HDTVs provide numerous zoom and stretch modes to accommodate SD resolutions (see HDTV display modes). See HD formats. For TV types, see flat panel TV, rear-projection TV and front-projection TV.

 HD - HIGH DEFINITION TV (HDTV)                         FrameResolution    Aspect  Rate   Pixel   Horiz x Vert  Ratio   (fps)  Shape

 1. 1920 x 1080   16:9    24p Square
 2. 1920 x 1080   16:9    30p Square
 3. 1920 x 1080   16:9    30i   Square

 4. 1280 x  720   16:9    24p Square
 5. 1280 x  720   16:9    30pSquare
 6. 1280 x  720   16:9    60p   Square

  p = progressive scan
  i = interlaced

HD Ready, Capable, Built In or Integrated
An "HD Ready" or "HD Capable" TV set means that it can display 720 progressive lines of resolution (720p) at minimum and can scale up lower and scale down higher-resolution signals to fit the screen. HD Ready requires an HD set-top box from the cable or satellite company to receive HD programs.

"HD Built In" or "integrated HDTV" refers to a TV with a built-in HD tuner for capturing HD broadcasts over the air.

HD Has Been Around Awhile
Since the turn of the century, consumers have become familiar with high definition TV; however, HD was available years before that. Japan experimented with HD formats in the 1970s and 1980s and was the first to broadcast an 1125-line signal for expensive, large-screen TV sets in the early 1990s. Both Japan and Europe's initial HD formats were analog.

For many years in the U.S., various analog and digital HD formats were used to shoot closed circuit presentations for corporate board rooms, trade shows and similar events. See interlace, deinterlace, DTV, letterbox, HD-DVD and aspect ratio.

Less Letterbox on HDTV
When a wide-screen movie is rendered without modification on an SD screen (left), black bars are displayed at the top and bottom (see letterbox and pan & scan). (Image courtesy of Intergraph Computer Systems.)
References in periodicals archive ?
There are two door buster items listed for Best Buy HDTVs.
MicroDisplay is partnering with these established brands to develop and distribute rear-projection HDTVs with screen sizes of 52" to 62".
Olevia[TM] 7 Series LCD HDTVs will be featured in ESPN's first-ever venue at the Sundance Film Festival, 'The Game', where entertainers, sports fans and VIPS will be able to enjoy sporting events as a weekend kick-off to the film festival.
a leader in HDTV technology, has selected VividLogic's Open Cable Application Platform (OCAP) 1.
Hitachi's top-of-the-line UltraVision(R) CineForm(TM) Director's Series(TM) models for 2006 include the 42-inch 42HDX99 and 55-inch 55HDX99 plasma HDTVs.
The Olevia 7 Series LCD HDTVs and 565H LCoS(TM) HDTV extends that reputation for performance and excellence into the home theater," said Sam Miller, Chief Product Officer for Syntax-Brillian.
The Quick Start Seamless HDTV and NTSC tuners deliver the picture quickly with seamless access to all available channels.
com to ensure that its Spanish-speaking customers will be able to enjoy the World Cup(TM) games in HDTV.
Syntax-Brillian is one of the world's leading manufacturers and marketers of LCD and LCoS(TM) HDTVs and digital entertainment products.
Mitsubishi's WD-73732 and WD-73831 HDTVs create an immersive experience from any signal, including over-the-air broadcast, cable or satellite TV, as well as DVDs and video games.
In separate announcements, Mitsubishi Digital Electronics America introduced the industry's first 1080p DLP(R) HDTVs with 6-Primary Color System, and its new lines of 73" 1080p DLP(R) HDTVs and 1080p LCD Flat Panel HDTVs.
The Mitsubishi laser HDTV utilizes separate red, green and blue semiconductor lasers in an exclusive implementation together with Texas Instrument's 1080p DLP(R) HDTV chip.