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DTH

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DTH

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  1. dth (direct to home) BY: JyotiWayal (09259)

  2. CONTENTS: • Introduction • History • Constituents of DTH • Basic principle of DTH • Basic Block diagram & its Operation • Cable TV Vs DTH TV • Features of DTH • DTH service providers • Advantages & disadvantages of top-4 DTH service providers in India • Conclusion

  3. INTRODUCTION • The term DTH stands for ‘Direct To Home’. • DTH television is a wireless system for delivering television programs directly to the viewer’s house. • ‡Defined as the reception of satellite programs with a personal dish in an individual home. • ‡DTH symbols the ³Transmission of digital video channel to home subscribers through small dish antenna

  4. HISTORY • DTH services were first proposed in India in 1996 but failed with approval. • Due to national security, In 1997 Again Ban imposed Rupert Murdoch- owned INDIAN SKY BRODCASTING(ISKYB). • Finally Approved & Allowed in 2000. • New policy requires all operators to set up in 12 months for license. • DTH licenses in India will cost $2.14 million and will be valid for 10 years.

  5. A DTH consists of: • Minidish antenna • LNBF • Coaxial cable • Connector • Set top box

  6. BASIC PRINCIPLE • In DTH television , the broadcast signals are transmitted from satellites orbiting the Earth to the viewer’s house. • Each satellite is located approximately 35,700km above the Earth in geosynchronous orbit. • These satellites receive the signals from the broadcast stations located on Earth and rebroadcast them to the Earth. • The viewer’s dish picks up the signal from the satellite and passes it on to the receiver located inside the viewer’s house. • The receiver processes the signal and passes it on to the television. • The DTH television is used in millions of homes across United States ,Europe and South East Asia.

  7. BLOCK DIAGRAM OF DTH

  8. OPERATION • The block diagram of DTH TV system can be divided into two sections: • Outdoor Unit • Indoor Unit • OUTDOOR UNIT • The outdoor unit consist of : • The parabolic satellite antenna • Low noise amplifier(LNA) • Converter

  9. Outdoor unit cont.. • The receiver antenna is a parabolic reflector horn antenna which is directed directly to the satellite to receive the signal. • The received signal from satellite by the antenna is applied to the low noise amplifier(LNA) which is a wide band amplifier. • LNA amplifies all the frequencies received from the antenna and applies them to a converter. The second input to this converter is from the local oscillator 1 • The converter output consist of a UHF signal having a frequency range from 950-1450 MHz with a bandwidth of 500 MHz • The output of converter is applied to the RF amplifier

  10. INDOOR UNIT • It consist of an RF amplifier which is applied to a channel selector to select the desired channel with the help of the mixer & local oscillator too. • An IF frequency of 70MHz is produced. • The RF amplifier applied these to video-audio detector which separates the video , audio & synchronous pulses. • The TV receiver then works as usual. • A DBS(Directly Broadcast Satellite) concept is used in DTH system.

  11. DTH Vs CABLE TV • Satellite TV involves receiving signals from a satellite where as cable TV entails airing programs. • The biggest difference between satellite and cable TV is the picture and sound quality. • Unlike cable TV, satellite TV programs are excellentquality with some of them being high definition. • Here are some guidelines that can help compare Dish Network with cable TV.

  12. COMPARISION DISH TV CABLE TV • Dish network features, HD, Dolby5.1ch, CD sound superior picture quality with huge nos of Channelaccess. • ‡Dish tv has remote geographical access with limited installation • Special features- recording and play games , study aids for children, and language Home tutorial packages, with MOVIES On demand. • Average Accessed quality of sound and picture, Limited numbers of channels accessed. • ‡Cable for subscriber is a limited to wire but major to the supplier with huge installation. • ‡Cable TV had manual access with least features but with Cable modem net.

  13. SOME OF THE FEATURES OF DTH • DTH offers better quality picture than Cable TV. • DTH can reach remote areas where terrestrial transmission and cable TV have failed to penetrate. • DTH has also allows for interactive TV services such as movie-on-demand , and e-mail. • In DTH, the payments will be made directly by the subscriber to the satellite company offering the service.

  14. DTH SERVICE PROVIDERS • India currently has 6 major DTH service providers and a total of over 5 million subscriber households. • Tata group and Star network owned Tata Sky • Zee group owned Dish TV • Sun network owned SUNDIRECT DTH. • Reliance owned BIG TV • BhartiAirtel’s DTH • DD Direct Plus India - DTH Potential DTH to grow from 3.2 mn in 2007 to 43 mn by 2015, with 30% share of Pay TV

  15. ADVANTAGE & DISADVANTAGEs OF TOP4 DTH SERVICE PROVIDERS IN INDIA

  16. TATA SKY ADVANTAGES DISADVANTAGES • Good picture & sound quality. • Lots of interactive services as active English ,active cooking , active wizkids, etc. • Good STB software & performance. • Only disadvantage is its package & pricing

  17. AIRTEL DIGITAL TV ADVANTAGES DISADVANTAGES • ADTV offers truly dvd quality picture & cd quality sound. • Packages & prices are good. • Universal remote. • Has less rain fed issue compared to other dth. • Presently offering max true HD channels. • Interactive services. • Switching between two channels is very slow

  18. RELIANCE DIGITAL TV ADVANTAGES DISADVANTAGES • Picture & sound quality is awesome. • Packages & prices are good. • Lots of own paid movie channels. • Less rain fade issue. • Irritating large logo, which is not transparent. • Hanging problem of STB. • Incorrect package & bad customer service.

  19. DISH TV ADVANTAGES DISADVANTAGES • Cheapest in all DTH. • Software of STB is very good. • Switching speed between channels is fast. • Picture & sound quality is not good. • Worst customer support • Activation process is too slow.

  20. CONCLUSION • DTH has made the hopes of the people of rural areas to come true. It helps to develop and explore the ignited mind of people of India to think beyond the scope of imagination. It also helps to develop the economic conditions of a country • ‡The DTH market in INDIA is relatively increase day -by-day, Major competitors like Airtel ,Reliance,TATA, Videocon market clash would managed to overtake Japan as the largest DTH market in Asia . • In the next 4-5 years (by 2014-15) we will be able to add another 30 million subscribers

  21. THANK YOU!!!

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