Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Wikipedia.


(Digital TeleVision) Transmitting TV using digital signals. The major DTV standards are ATSC (North America), DVB (Europe) and ISDB (Japan). All three use MPEG-2 video compression and Dolby Digital audio compression. DVB and ISDB also include MPEG audio compression. See ATSC, DVB and ISDB.

The FCC approved ATSC in 1996, and the U.S. switched to digital broadcasting in June 2009 (see digital TV transition). Other countries have also adopted the ATSC format, including Canada, Mexico and South Korea.

A Digital TV or a Set-Top Box
To receive a DTV program requires a digital TV set or a digital set-top box for an analog TV. However, digital TV sets may also have analog inputs for years, because people have huge collections of VHS movies and recordings.

Eighteen DTV Formats
DTV offers 18 digital formats (see table below) starting with Standard Definition (SD), the digital counterpart of the NTSC analog standard, except without snow and ghosts. High Definition (HD) provides 5.1 Dolby Digital Surround Sound and requires a wide screen TV set (16:9) in order to eliminate the letterbox effect.

The numerous options provide the broadcaster with a tradeoff between how many channels can be sent versus channel quality. The more HD channels, the fewer ED and SD channels, and vice versa. See digital TV transition, TV converter box, HDTV, letterbox, NTSC, 8-VSB, interlace and cliff effect.

   p = progressive scan (non-interlaced)   i = interlaced                          FrameResolution    Aspect  Rate    Pixel    Horiz x Vert  Ratio   (fps)   Shape HDTV - High Definition TV

  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

 EDTV - Enhanced Definition TV - 480p

  7. 704 x  480   16:9     24p     Rect
  8. 704 x  480   16:9     30p     Rect
  9. 704 x  480   16:9     60p**   Rect

 10. 704 x  480    4:3     24p     Rect
 11. 704 x  480    4:3     30p     Rect
 12. 704 x  480    4:3     60p**   Rect

 13. 640 x  480    4:3     24p     Square
 14. 640 x  480    4:3     30p     Square
 15. 640 x  480    4:3     60p     Square

 SDTV - Standard Definition TV - 480i

 16. 704 x  480   16:9     30i     Rect
 17. 704 x  480    4:3     30i**   Rect
 18. 640 x  480    4:3     30i     Square

 ** most popular formats

      720 x 480 x 30 fps (NTSC)
      720 x 576 x 25 fps (PAL/SECAM)
       Only 704 of the 720
        horizontal pixels are visible.

  D1 Broadcast Format
      720 x 486 x 30 fps (NTSC)
      720 x 576 x 25 fps (PAL/SECAM)

The 4:3 aspect ratio on standard TV and computer screens (left) is more square than the 16:9 ratio of wide screen sets (right). (Image courtesy of Intergraph Computer Systems.)
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
'Our target is to attract more technology companies to DTV and enable synergistic collaborations among the various stakeholders.
Singapore's switch to DTV is supported by the DVB-T2 standard, and will also allow viewers with Toggle Red Button-registered HbbTV (Hybrid Broadcast Broadband TV) sets to access Mediacorp TV shows, Toggle Original Content and catch-up TV.
We will briefly describe video coding and transmission techniques in the current DTV standards in Section 2.
Of these, 11 had a positive test for IgM in serum to recombinant DTV envelope protein and evidence of neutralizing antibodies against POWV; case-patient 8 had a 4-fold increase in neutralizing antibodies against POWV between acute and convalescent serum samples, without detectable IgM.
"We are happy to work with Broadcom, a major technology innovator and leading worldwide DTV chip provider," said Matt Milne, Executive Vice President, Sales and Marketing, DivX, Inc.
DTV has backed a number of successful companies in Brazil, Colombia, Mexico and Central America, helping them to establish strong market leadership in key Latin American countries and develop significant operations internationally.
"The engineering teams at Micrel and Zoran focused on creating an optimized Internet Connected DTV reference design that allows OEMs and ODMs to ramp to production in a short period of time.
Mr Morton is replacing Kerry Quinn at DTV, who is leaving to become operations director at Cardiff Airport.
Ideal for reception of Mobile DTV any time, virtually anywhere, and at any speed, the DP570MH Mobile Digital Television offers the flexibility of both over-the-air reception and the convenience of built-in DVD playback.
These mobile DTV transmissions would emanate from broadcast towers and co-exist as a separate service from the voice, text and image communications going through the cell phone facilities of major carriers like Sprint, AT&T and Verizon.
"The switch to DTV offers benefits to consumers and society, but we must be vigilant to make sure all Americans are prepared for the transition," said Acting FCC Chairman Michael Copps in an FCC statement.
The Digital Television Transition and Public Safety Act of 2005 requires all full-power television stations in the United States to cease analog broadcasting after February 17, 2009, known as the digital television (DTV) transition.