ppt on the training at doordarshan

7/28/2019 PPT on The Training at Doordarshan

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6 weeks Training in

Doordarshan Jalandhar

Presented by:-

PURN CHANDRA JHAAIET ALLAHABAD


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INTRODUCTION


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Doordarshan kendra serving anindividual organization which playsan important role in TVs cinema

It provides free to air channels DD-1,DD-NEWS and many more

It originates the programmes and

telecast on the channel The inauguration of transmitter atjalandhar was done on april 27,1975by Sh I.K Gujaral union minister of

information and broadcasting Another channel is telecasted by the

doordarshan in punjabi is DD-Punjabi First studio in Punjab was made atjalandhar


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VARIOUS SECTIONS OF DD-

KENDRA

STUDIO

TRANSMITTER

EARTH STATION ENG

NLE

OB VAN


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STUDIOS

Television signals for broadcastingare originated by cameras ,recordedat the studios and replayed by video

tape recorders, mixed in studiovision mixers and finally distributedfor transmission.

Action In this includes staging,lightening, performance by artists .


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There are three different studios :-

Studio A

Studio B

Studio C

Studio A is largest studio in

comparison to B & C used for mainrecordings (like for the program meLISHKARA and STAR NIGHT)

Studio B is used for the liveprogramme like discussions, news &sajjari sawer.


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Studio C is the last studio.

It is used ocassionly.

Studios are acoustic treated toprovide good quality of sound.

Very efficient air conditioning is

required for the heat dissipation bythe studio lights.

There is three setup of cameras in

the studio A. Studio warning lights and safety

devices like fire alarm system and

fire fighting equipments.


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CAR

This stands for central apparatusroom.

Car is basically a channel or path

through which the video signal pass. All studio has its own CCU ie. camera

control unit.

PCR ie panel control room The no. or model of video consol is

PDS 9000.


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ENG

Eng stands for electronic newsgathering.

The purpose of eng is to gather newsfrom different outside locations.

Cameras used in eng section aresmall and light weight.

These cameras are called camcoders.


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The cameras used in ENG have three

sections :-

A camera lens and optics:- to formoptical image

A transducer or pick up device:- toconvert optical image into electricalsignal.

Electronics:- to process the output oftransducer.


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Video Tape recorders

VTR room is provided at each studiocenter. It houses at least two consoletype 1videotape recorders (VTRs)

and a few Broadcast standardVideocassette recorders (VCRs). Inthese recorders, sound and video

signals are recorded simultaneouslyon the same tape.


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These are the VTR used to see the

previews.

Control panel is below them fromwhere all the control are managed


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Computer Section It is basically related to editing.

There are two types of editings.1. Linear editing.

2. Non linear editing.

Softwares used in non linear editing.

For news editing Velocity 6.0 isused.

For graphics MOV CG 2003 n Adobephotoshop.

For programme editing velocity 8.0and FCP (final cut pro)


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Leatch server used in graphicssection.

It can record the programmes upto24 hrs and more.

With this leatch server we can playand record the programmessimultaneously.

It consists of 3 recorders andplayers.

Video logger is also used. Its canrecord the programmes upto 3months.

It is for makin a backu an ro.


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Non linear editing

Problem with Linear Editing

1) Editing is sequential first shot first

2) Long hours spent on rewinding of tapes , search

3) of material4) Potential risk of damage to original footage

5) Difficult to insert a new shot in an edit

6) Difficult to experiment with Variations

7) Quality loss more in analog; even with digital

8) Limited Compositing, effects, color correction

9) Capability


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What is NLE

1) NLE is video editing in digital format with

2) standard computer based technology

3) Computer technology is harnessed in

Random4) access, computational and manipulation

5) capability, multiple copies, intelligentsearch,

6) sophisticated project and mediamanagement

7) tools, standard interfaces, and powerfuldisplay


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OB-VAN It is known as outdoor broadcasting

van and used for outer coverage. Events like sports, functions are

covered by this van.

It consists of 8 cameras and 3external sources and 4 VTR.

LSM:- LIVE SLOW MOTIN MACHINE.

It is used to play the replays in slowmotion.

There are also pc racks, mixers vtr

racks.


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DSNG This is known as direct satellite news

gathering.

It works simultaneously with OB van.

Its also called as mobile earthstation.

The dish can be aligned acc to therequirement.

Monitors are available in this van tocheck the telecast.

High power ups are also available inthis van.


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EARTH STATION

It is the major section.

Epuipment operates in frequencyrange of 5.85Ghz to 6.42Ghz fortransmit.

And for receiving 3.625Ghz to4.2Ghz.

The antenna consists of lna, antennacontrol unit, reciever, up convertorsystem, high power amplifier.


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Transmission system carries digitalbase band system signals from

studio to earth station site tominimize the noise interface.

The base band system is moniteredand control through a base bandNMS PC.

It also comprises of digitalmultiplexers and digital modulators.

The compression segment comprisesof MPEG encoders for providingredundancy.


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Features of ES A fiber optics connectivity to two SDI

video and two AES audio signals.

System configured in mcpc(2+1)MODE.

Base band processing fully digital incI/P video and audio signal

Digital encodeing sys complaint toMPEG.

Single point remote monitoring forvideo and audio.


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System layout There are different racks in DD.

These the racks used to have asmooth flow of signals.

Like video, audio RF and control soas to cabling length b/w the racks.

A fiber optics link of 200mts withNMS control cable for base band isprovided b/w the studio and earthstation.


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Video chain of OB VAN

Output from the switcher goes to stabilizing amplifier via PP andVDAs.

Output from the stab. Is further distributed to variousdestinations. It may be noted that the use of VDAs helps tomonitor the video signal at different locations and the use of PP is

very helpful for emergency arrangements during breakdowns andtrouble shooting.

A separate monitoring bus is provided in CCU, LCU and ENDCONTROL with sources as.

END CONTROL also has a remote for the adjustment of levels etc.in the STAB AMP unit. R

out for the other sources is similar to this and can be understoodfrom the block schematic.


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