Dth.ppt by Himani

WELCOMEPresentation

On

DIRECT TO HOME

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CONTENTS

Introduction History of DTH Main Components Network Facility Different usage Scenario in India Conclusion References

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What is DTH ?

DTH is defined as:

The reception of satellite programs with a

personal dish in an individual home.

DTH does away with the need for the local cable

operator and puts the broadcaster directly in touch

with consumer .

A wireless digital audio / video service is

delivered through satellite.

HISTORY

• The first person who invented the technology for DTH was sir ARTHURE CLARLES CLARKE , a british inventor in late 1946.

• The DTH service was first proposed in INDIA in 1996 , but was not approved due to concern over national security.

• Finally , In 2000 DTH service was allowed and DOORDARSHAN was first to provide the service to

the consumers from 1st of April ,2000.• After this other DTH service provider like ZEE and STAR

started pushing hard for DTH service in INDIA and setup earth station whose cost was 2.15 million and was valid

for 10 years in INDIA.4

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MAIN COMPONENTS OF DTH

Broadcasting center Satellites Encoders Multiplexers Modulators DTH receivers.

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Services uplinked to Satellites

Services downlinked viareceive satellite dish

and fed in to STB

Enc1

Enc2 MUX

Content “on demand” servers

QPSKModulator

Real Time TV services

PROCESS

BLOCK DIAGRAM OF DTH SYSTEM

Low noise amplifier

Down Converter

Amplifier

Down Converter

Tunable Local Oscillator

Filter

Demodulator

TV SET

Video baseband

Channel selector Channel selector

Low noise block down converter

SET TOP BOX

A settop box can

demodulate the received

signal and can convert these

signal into audio and

video signal.9

Cable H

ead-end

Private Home Private Home

Private Home

DTH Receive Facility

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PLAYER’S IN D.T.H

DISH T.V

TATA SKY

BIG T.V

SUN DIRECT

VIDEOCON d2h

AIRTEL DIGITAL TV

• D.D. DIRECT

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93.5 INSAT 4B

95 NSS

83 INSAT 4A

74 INSAT 4CR

ST1

DTH SATELLITE SCENARIO YEAR 2009

INDIAN DTH

SUBSCRIBER

91.5 MEASAT

98.5

PROTOSTAR-1

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0.06 0.18 0.751.925

4.8

9.8

15

20.9

26.1

30.4

33.8

36.237.6

0

5

10

15

20

25

30

35

40

2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

Year

Subs

crib

ers

(Mill

ions

)

GROWTH OF DTH USERS

2007 to 2015…Growth of 683 %

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LATEST IN DTH IN INDIA

Recording of TV programs remotely using mobile device.

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CONCLUSION

DTH has made the hopes of the people of rural areas to come true.

DTH service in India is in initial stage delivering only TV broadcasting

In near future, launch of DTH internet service is expected in our country.

It provide the wide thinking of rural people which helps to develop the culture of society.

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REFERENCES

www.mindstein.comwww.airtel.inwww.tvasia.comwww.wikipedia.comwww.videocond2h.comNewspapers

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