final doordarshan ppt

8/19/2019 Final Doordarshan PPT

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Training at DDK, Mandi

House

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Presented by-

Ashwani Kumar Saxena(07614802810)

Prakhar u!ta(07714802810)

7"#"4$6


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Contents

• About Doordarshan• Production Chain• TV Studio• Production Control Room (PCR)

• Studio Lighting• Vision Mixer • MSR

• TV Sstem• !" Van• #arth station• DS$%

2


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About Doordarshan

• &t is a di'ision o Prasar "harti a *ublic ser'icebroadcaster nominated b the %o'ernment o &ndia+

• The DD *ro'ides tele'ision radio online and mobileser'ices throughout metro*olitan and regional &ndia as

,ell as o'erseas through the &ndian $et,or- and Radio&ndia+

• &t started its o*eration in ./0/+ $o, Doordarshano*erates 12 channels in 33 languages and is one o thelargest terrestrial net,or- in the ,orld+ • /24 o the &ndian *o*ulation can recei'e DD*rogrammes through a net,or- o nearl .522 terrestrialtransmitters+ 3


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4

Production Chain


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TV Studio

&t is an installation in ,hich tele'ision *roductions

ta-e *lace+ &t is di'ided into 3 ma6or areas7

Action AreaThis *lace ha'ing large

s*ace and ceiling includes

staging lighting

*erormance b artists and

arrangement to *ic-u*

sound and *icture 5


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Production ControlRoom

Acti'ities in this area

are7

a+ Direction to the

*roduction

cre, b the *roducero the *rogram+

b+ Timing a *roduction+

c+ #diting o dierent

sources a'ailable at*roduction des-+

d+ Monitoring o

out*ut8o air signal+


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Vision Mi(er

)

• A vision mixer (videoswitcher or productionswitcher ) is a de'ice usedto select bet,een se'eraldierent 'ideo sources and

in some cases mix 'ideosources together and adds*ecial eects+

• &t has man in*ut sourcessuch as cameras VCR8

ser'er %ra*hics8 Charactergenerators etc+

• Sources can be changed ascut to cut dissol'e ,i*eand other s*ecial eects+


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TV Sstem

• &t is *ossible to obtainan desired color bmixing three *rimarcolors i+e+ Red "lue andgreen in a suitable

*ro*ortion+• &t is onl re;uired to

con'ert o*ticalinormation o these threecolors to electrical signalsand transmit it on

dierent carriers to bedecoded b the recei'er+

• This can then becon'erted bac- to theo*tical image at the*icture tube


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• So the *ic- u* rom the cameras and out*ut or the

*icture tube should consist o three signals i+e+ R % and

"+

• &t is onl in bet,een the camera and the *icture tube o

the recei'er ,e need a sstem to transmit thisinormation


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%$ Van

• The mobile Production Control Room (PCR) is -no,n as

!" Van

• &t is the #lectronic


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Earth station

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•

&t is an u*lin- center rom,hich the signals are ed toSatellite or distribution in as*eciied area co'ered bthe Satellite

• The signal is u*>lin-ed romthe #arth Station andrecei'ed b man do,n lin-centers in TV broad casting

'ia PDA+• T*es7 AnalogDigital

AS$% DS$%

C>band or ?u>band


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"eneral con-gurationo. Earth Station


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Digital Signal 'e*s"athering )DS'"+• &t is li-e a digital #arth Station

• Programmes ma be u*lin-ed through DS$% rom an

*lace+

• DS$% ma-es it *ossible to bring li'e ne,s and s*ort tomillion o 'ie,ers+

• Com*onents o DS$%7

.+ PDA (Parabolic Dish Antenna)

3+


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&han! ,ou

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final doordarshan ppt

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