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Malwa Institute of Technology Indore PRESENTATION ON INDUSTRIAL TRAINING DORDARSHAN INDORE PowerPoint Presentation
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Malwa Institute of Technology Indore PRESENTATION ON INDUSTRIAL TRAINING DORDARSHAN INDORE Submitted to : Mr. XYZ (Senior Assist. Pro.) Presented by ABC (EC 4 th year). CONTENTS. Introduction Tv studio Components of TV studio

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Presentation Transcript
slide1

Malwa Institute of Technology Indore

PRESENTATION

ON

INDUSTRIAL TRAINING DORDARSHAN INDORE

Submitted to :

Mr. XYZ

(Senior Assist. Pro.)Presented by

ABC (EC 4th year)

contents
CONTENTS
  • Introduction
  • Tv studio
  • Components of TV studio
  • Tv picture
  • Broadcasting
  • Antenna
  • Earth station
  • Satellite communication
slide3

COMPANY PROFILE

  • DoordarshanKendra is a part of Department of Information and Broadcasting (Govt. of India).
  • Doordarshan, one of the largest broadcasting organization in the world.
  • Doordarshanopened its windows to the world by launching its international channel on 14th March, 1995.
  • Presently, Doordarshan operates 19 cahnnels-2 all India channel,11 regional satellite language channel, four state network (SN), an international and a sport channel.
  • DD-NEWS channel launched in 3rd November,2003,replacing existing DD-METRO entertainment channel, provide 24 hours news to viewers in all variety.
introduction
INTRODUCTION
  • In March 1935 government took charges of broadcasting.
  • In 8th June 1936 all India radio is formed under the department of communication.
  • In 1959 first black and white TV station is formed in Delhi.
  • In 1976 TV is separated from radio.
tv studio
TV STUDIO
  • A television studio is an installation in which video productions take place, either for the recording of live television to video tape, or for the acquisition of raw footage for post-production.
components of tv studio
COMPONENTS OF TV STUDIO
  • camera
  • Lighting
  • Vision mixer
  • MSR
camera
Camera

A TV camera consist of the following sections:

  • A Camera lens and optics :To form optical image on the

face Plate of a pick up device.

  • A transducer or pick up device :To convert optical image into an Electrical signal.
lighting
LIGHTING

In a television studio it is necessary to illuminate each area of action separately besides providing an average level of brightness over the entire scene.

Different types of light…..

  • Eye light
  • Rim light
slide9

Vision mixer

  • A vision mixer or production switcher is one of the primary devices used to produce a television program.
  • Production switchers are essential to all live operations.
  • The principle methods used to combine video are- Mixing, Wiping, & Keying
slide10

It is the heart of the studio.

Most of the switching electronics is kept e.g. camera base stations, switcher main frame, , Satellite receivers & most of the patch panels.

Signal is routed through MSR.

Signal can be Monitored at various stages

MSR

slide11

BROADCASTING

  • Broadcasting is a very large and significant segmentof the Mass Media.
slide12

BROADCASTING

It is a one way communication in this the process of sending information to a distant place is called as broadcasting.

antenna
ANTENNA
  • An antenna (or aerial) is a transducer designed to transmit or receive electromagnetic waves.
  • In other words, antennas convert electromagnetic waves into electrical currents and vice versa.

Electrical signal

Electromagnetic wave

Receiving Antenna

antenna fundamentals
ANTENNA FUNDAMENTALS

Regardless of the type and configuration of the antenna, performance can be characterized by the same metrics:

  • Radiation Pattern
  • Directivity
  • Input impedence
  • Antenna efficiency
  • Antenna gain
  • Polarization
  • Bandwidth
slide15

RADIATION PATTERN

  • Radiation pattern shows that the gain of an antenna varies with direction.
slide16

DIRECTIVITY

The directivity of an antenna has been defined as “the ratio of the radiation intensity in a given direction from the antenna to the radiation intensity averaged over all directions”. In other words, the directivity of a non isotropic source is equal to the ratio of its radiation intensity in a given direction, over that of an isotropic source.

Where D is the directivity of the antenna

U is the radiation intensity of the antenna

Uiis the radiation intensity of an isotropic source

P is the total power radiated

slide17

BANDWIDTH

The bandwidth of an antenna is defined as “the range of usable frequencies within which the performance of the antenna, with respect to some characteristic, conforms to a specified standard.”

The bandwidth of a broadband antenna can be defined as the ratio of the upper to lower frequencies of acceptable operation. The bandwidth of a narrowband antenna can be defined as the percentage of the frequency difference over the center frequency. According to these definitions can be written in terms of equations as follows:

Where,

f H= upper frequency

f L= lower frequency

f C= center frequency

setellite communication
Setellite Communication
  • The technique involves transmitting signals from an earth station to a satellite is known as satellite communication.
  • A satellite communication is a station in space that is used for telecommunication, radio and television signals
  • The first satellite with radio transmitter was in 1957.
earth station
EARTH STATION
  • Earth Station is a uplink center from which the signals are fed to Satellite for distribution in a specified area covered by the Satellite.
  • It is usually itself an antenna that includes low noise amplifier, down converter and as well as electrical receiver.
  • It is a very important part of satellite communication system for broadcasting of signals.
communication link
COMMUNICATION LINK
  • The term link refer to a path used to communicate with the satellite
  • UPLINK: Transmit signal from ground station to the satellite.
  • DOWNLINK: Transmit signal from satellite to ground station.
  • CROSSLINK: Transmit signal from satellite to satellite.
slide22

CONCLUSION

Doordarshan, the national television service of India, is devoted to public service broadcasting.It is one of the largest terrestrial networks in the world. In my Industrial training at Doordarshan Kendra, Indore, I have gained useful knowledge which will surely be of great help in future.

This training gave me an opportunity to learn the practical aspects of the knowledge of my field of interest, Electronics and communication

I have learned how science and engineering can interact in useful ways and how remarkable research can occur even when it is ‘profit driven’; at DD, while deadlines and budgets are important, creativity is not limited and true innovation occurs.I was lucky enough to work with a group of enthusiastic and communicative people, who for whatever reason share in enjoying what they are doing; the atmosphere at DD is unique and hope that it says that way.

It has been a unique opportunity and one that I will not soon forget; I am looking forward to continuing work there as a thesis student. My time there has been eye opening and I thoroughly recommend the experience to any other student who is thinking of applying.