DTV


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

DTV

(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 DVB and ISDB).

The FCC approved ATSC in 1996 (see ACATS), 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 continue to have analog inputs for many 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, digital cable 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


  RELATED FORMATS:DVD - DV/MiniDV
      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)




SDTV Vs. HDTV
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.)
References in periodicals archive ?
Since we've got DTV 738 monitored, it doesn't take an Ivy League education to deduce that 14-seed Princeton, holding its typically skewed 17-9 advantage over three-seed Texas with about eight minutes left in the first half, will make for better theater.
As we approach the deadline, the increasingly evident lack of significant consumer purchases of (relatively expensive) DTV receivers means Congress faces the prospect of telling voters that their analog TVS--including the big new ones they buy just this year, or next year, or in 2005--will either be wholly obsolete or require a converter box to keep working.
The reasons behind the protests vary, but most rely on some fairly shaky math that CEA says indicates that consumers are (and will be) unwilling to pay the additional costs associates with adding a DTV tuner to a television.
DTV invertira, asesoriara, se asociara y ofrecera los mejores servicios de oficina a traves de DTC", destaca Richard H.
Mobile DTV content will be a combination of free viewing and paid viewing.
Additionally, those with DTV sets - which will feature rectangular screens like those in movie theaters - will be able to use them for other digital programming such as satellite TV broadcasting and Hollywood's latest format, the burgeoning digital videodisc.
Quantity of DTV subscribers in Shanghai, Zhejiang, Guangdong, Jiangsu and other economically developed regions grows rapidly.
This report analyzes the overall DTV market, market segments, policies, key enterprises, and development trends of DTV industry.
A specially modified, non-commercial prototype version of the "Moment" mobile phone from Samsung Mobile is a CDMA handset with ATSC Mobile DTV capability.
S3 is also the leading provider of broadcast mobile DTV solutions.
Developmental Trends of Chinas DTV Industry and Conclusions
Matt Hatch, VP, Mobile Digital TV, Frontier Silicon stated, "The goal has been to offer a complete solution that goes beyond a basic mobile DTV reference platform.