Download tv studio

Malwa Institute of Technology Indore
PRESENTATION
ON
INDUSTRIAL TRAINING DORDARSHAN INDORE
Submitted to :
Mr. XYZ
(Senior Assist. Pro.)
Presented by
ABC
(EC 4th year)
Introduction
 Tv studio
 Components of TV studio
 Tv picture
 Broadcasting
 Antenna
 Earth station
 Satellite communication

COMPANY PROFILE
 Doordarshan Kendra is a part of Department of Information and Broadcasting
(Govt. of India).
 Doordarshan, one of the largest broadcasting organization in the world.
 Doordarshan opened 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 DDMETRO entertainment channel, provide 24 hours news to viewers in all variety.
 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.
 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.

camera

Lighting

Vision mixer

MSR
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.
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
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 areMixing, Wiping, & Keying
 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
BROADCASTING
Broadcasting is a very large and
significant segment of the Mass Media.
BROADCASTING
It is a one way communication in this
the process of sending information to a
distant place is called as broadcasting.
 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
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
RADIATION PATTERN
Radiation pattern shows that the gain of an antenna varies with direction.
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
Ui is the radiation intensity of an isotropic source
P is the total power radiated
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
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 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.


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.
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.