1. DTV
SAMARTH COLLEGE OF ENGINEERING &TECHNOLOLOGY DEPARTMENT OF ELECTRONIC & COMMUNICATION ENGINEERING
Subject Code [ ]
5th semester (E&C)
Prepared By:-
1.PATEL MAYURKUMAR D ( ) 2.CHAUHAN HARDIKSINH R. ( )
3. PATEL SRUSHTI P ( )
4. ACHARYA SUNITA S ( )
Guided By:-
Prof. N.D.PATEL

2. DTV

3. Do You Remember These?

4. History
In the United States, the National Television System Committee (for which the NTSC standard is named) standardized on 525 lines at 30 fps in 1940, with regular broadcasts starting on July 1, 1941.
NTSC standard was updated to include first a non-compatible 441-line color standard in 1950, which was replaced by a compatible 525-line, 29.97fps color standard approved in 1953 and used to this day.
Current high definition video standards were developed during the course of the advanced television process initiated by the Federal Communications Commission in 1987 at the request of American broadcasters
FCC process, led by the Advanced Television Systems Committee (ATSC) adopted a range of standards from interlaced 1080 line video with a maximum frame rate of 30 fps, and 720 line video, progressively scanned, with a maximum frame rate of 60 fps. The FCC officially adopted the ATSC transmission standard (which included both HD and SD video standards) in 1996, with the first broadcasts on October 28, 1998.

5. Who is Affected by Change to DTV?
Consumers who receive over-the-air television signals through antennas on television sets that are equipped with analog tuners – and who do not subscribe to cable, satellite or a telephone company television service provider – will be affected by the transition.
At least 19.6 million households receive over-the-air signals exclusively in their homes, and 14.9 million households have secondary over-the-air television sets in their bedrooms or kitchens. Overall, nearly 70 million television sets are at risk of losing their signals on February 17, 2009, if consumers do not make the transition to DTV.

6. Analog vs. Digital Television
Analog TV – AM vestigial sideband
6 MHz of bandwidth per channel plus the audio
High power transmitters for coverage – 45 to 75KW Avg. Out
~300KW to 5MW ERP
Noise and multi-path interference common
Digital TV – 8VSB MPEG-2 Stream
6 Mhz Channel can produce multiple programs viewable with ATSC tuner (multicasting)
5 to 7.5 KW Average Transmitter Output Power
Austin Broadcasters KW to 1.5 MW ERP
Received picture is either perfect or not at all
5.1 Surround Sound
UHF Channel Spectrum

7. Why the Change to Digital TV ?
Increase number of programs local broadcasters can provide
Improve the Quality of Picture and Sound
Converting to DTV will also free up parts of the scarce and valuable broadcast airwaves.  Those portions of the airwaves can then be used for other important services, such as advanced wireless and public safety services (for example, police, fire departments, and rescue squads, commercial wireless).

8. Transition to Digital Television
TV stations serving all markets in the United States are airing digital television programming today, most will continue to provide analog programming through February 17, 2009.
Full-power TV stations will cease broadcasting on their current analog channels, and the spectrum they use for analog broadcasting will be reclaimed and put to other uses.
The Commission's digital tuner rule specifies that as of March 1, , all new TVs must include digital tuners.

9. Converter Box Coupon Program
Between Jan. 1, 2008, and March 31, 2009, all U.S. households will be eligible to request up to two coupons, worth $40 each, to be used toward the purchase of up to two, digital-to-analog converter boxes.
The National Telecommunications and Information Administration (NTIA) has responsibility for administering the coupon program. More information can be found at

10. Digital Television Quality Levels
Standard Definition TV (SDTV) - SDTV is the basic level of quality display and resolution for both analog and digital. Transmission of SDTV may be in either the traditional (4:3) or wide screen (16:9) format.
Enhanced Definition TV (EDTV) - EDTV is a step up from Analog Television. EDTV comes in 480p wide screen (16:9) or traditional (4:3) format and provides better picture quality than SDTV, but not as high as HDTV.
High Definition TV (HDTV) - HDTV in wide screen format (16:9) provides the highest resolution and picture quality of all digital broadcast formats. Combined with digitally enhanced sound technology, HDTV sets new standards for sound and picture quality in television. (Note: HDTV and digital TV are not the same thing -- HDTV is one format of digital TV.)