Best Digital Tv Standard

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  • Topic: Digital television, High-definition television, Digital terrestrial television
  • Pages : 9 (2890 words )
  • Download(s) : 580
  • Published : January 3, 2011
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The quality of broadcasting is changing by the appearance of the services which fuses broadcasting communication technologies. Different standard has been developed for this purpose to improve the quality of service. The aim of my investigation is to find out the development path of the digital broadcasting standard in Europe, USA and Japan. In this paper I also outline the operation of each standard and present their comparison based on their services and technical parameter.

* Table of Contents
4.1DVB-T (Digital Video Broadcasting-Terrestrial)3
4.2ATSC (Advanced Television Systems Committee)5
4.3ISDB-T (integrated service digital broadcasting-terrestrial)7 5Comparison:10
5.1Comparison from the service aspect10
5.2Technical comparison11
5.3The summary comparison of the three standard11

Table 1: Broadcasting service of 3 DTTB systems.11
Table 2: Technical Services of 3 DTTB systems.12
Table 3: Summary of 3 DTTB systems comparison13

Figure 1: worldwide deployment4
Figure 2: DVB -T SFN Network Architecture5
Figure 3: ATSC Tuners7
Figure 4: ATSC System7
Figure 5: ISDB-T System in Japan8
Figure 6: ISDB-T Segmentation9
Figure 7: ISDB-T Operation9

Digital broadcasting set to transform the communication landscape now a day. The digital switchover will leapfrog existing technologies to connect the uncorrected in underserved remote communities and close the digital divide. The goal of this achievement is to bring structural development of digital terrestrial broadcasting and sufficient flexibilities for adoption to the changing telecommunication environment. The switchover will create new distribution network and expand the potential and multimedia data making application and services. The digital dividend accruing from efficient in spectrum usage will allow more channels to be carried across fewer airwaves and lead to greater convergence of services. The digital broadcasting will support mobile video internet and multimedia data making application, services and information accessible and usable anywhere and at any time. Its inherent flexibility opens the door for new technology such as high-definition television and handheld TV broadcasting.

The digital television standard describes a system designed to transmit signal by means of digital modulation technique. Moreover it permit’s a level of quality and flexibility and enable a significant step up performance, services. The level of standardization of the DVB is quite advanced, and relevant recent international standards and related documents are introduced and referred to for easy access to the agenda seeking technical details. Each standard proposed and established by the regional consortium, research centre and Telecommunication Company according the local broadcasting consumer needs, demand and different parameter. There are several digital TV standards developed and deployed in different countries: * ATSC standard for US

* DVB-T in Europe.
Fig 1 shows the globally deployment of the above standard [1] Figure [ 1 ]: worldwide deployment
Source: DVB-T (Digital Video Broadcasting-Terrestrial)
In early 1990 European broadcaster, equipment manufacturer and regulatory agencies have managed to develop a standard for digital TV for this region. A memorandum of understand has been launched by the stake holder and was signed September 1993. The mission of this group is to protect inter operable standards for the global delivery of digital media service [1]. The DVB-T standard has been designed for stationary and portable terrestrial reception with multi path fading. It uses OFDM with guard interval because it uses large number of...
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