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Doordarshan Implant Training Report
This document provides an overview of Doordarshan, the public service broadcaster of India. It discusses the history and establishment of Doordarshan, describing how it began terrestrial television broadcasts in 1959. The document outlines the key components of Doordarshan's infrastructure, including studios, transmitters, earth stations, and various television equipment. It also provides technical details on television standards, encoding, transmission systems, and the role of different types of antennas and satellites in broadcast distribution.
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Doordarshan Implant Training Report
- 1. INPLANT TRAINING REPORT REHANFAZAL (1171110180) UTSAV GAMI (1171110175) SIDDHANTH CHAKRABORTY (1171110174) DOORDARSHAN
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- 3. INTRODUCTION LARGEST BOARDCASTING ORGANISATION 1ST SERVICE STARTED ON 15TH SEP,1959 Doordarshan = Distant + Show. Doordarshan is an Indian public service broadcaster. One of the largest broadcasting organizations in India in terms of the infrastructure of studios and transmitters.
- 4. Terrestrial televisionin India started in Delhi on 15 September 1959. The regular daily transmission started in 1965 as a part of All India Radio. Television services were separated from radio in 1976. In 1982 color TV was introduced in the Indian market.
- 5. DD Setup • Satellite- INSAT-3C, 740 E • Transponder – C24 Parameters: • Symbol rate – 4.25 MSPS, • Downlink Freq. – 4166.50 MHz, • FEC – ¾, • Polarisation D/L – Vertical, Linear. Equipments - • Encoder (E5411), Modulator (SM600), Multiplexer (Mx5620) – Two nos. each (Tandberg make) in 1+1 Mode • Up Converter (Advent) - Two • 700 W HPA (Xicom) – Two • Network Management PC
- 6. Doordarshan's Signature Tuneand Montage (1974) • It all started 52 years ago, on 15 September 1959. With a humble beginning and a little support from All India Radio. Doordarshan (DD) started its transmission and gave birth to Indian Television. When we think about Doordarshan the first thing that comes in our mind is the sad signature tune which would play before the transmission every Morning, Afternoon & Evening Sessions. Similer to the AIR Signature tune , the Doordarshan's Signature Tune is embedded in our minds till it got a setback due to the upsurge of Cable television in the early 90's. This Nostalgic piece of music was composed by Ustad Ali Ahmed Hussain Khan with Pandit Ravi Shankar in 1974. In 1976 the DD Montage was designed at National Institute of Design (NID). In the next two decades from the early 80's to mid 90's, Doordarshan produced some of the finest serials on Indian Television. The people born in that generation when there was no other channel than DD will & definitely do miss it. This slow mournful Signature Tune has become a cherished memory for generations of Indians all across the world.
- 8. TELEVISION STANDARDS • NTSC-Nationaltelevision standards committee(US) (525 Horizontal & 60 vertical lines) • SECAM-System electronics for colour avec memory(FRANCE)(625 vertical & 50horizantal lines) • PAL- Phase Alternating lines(GERMANY)(625 horizontal & 50 vertical line) Television standards used in India is PAL
- 9. PAL ENCODER &DECODER • Input is the primary colour (i.e. red, green, blue) into matrix circuit as Y, R-Y, B-Y. • Y=0.30R+0.59G+.11B • U=0.477(R-Y) • V=0.895(B-Y) • Out of 625 horizontal line only 575 are active • 50 vertical lines
- 10. COLOUR COMPOSITE VIDEOSIGNAL
- 11. • Front porchis to crate horizontal blanking Also contain sync pulse • Back porch is the portion of each scan line between end of horizontal sync pulse and start of active video signal • Colour burst is absent in the black and white transmission of video signal
- 12. TELEVISION COMMUNICATION SYSTEM AUDIO AMPLIFIER FM MODULATOR FMSOUND TRANSMITTER MIC. CRYSTAL OSCILLATOR RF AMPLIFIER POWER AMPLIFIER SCANNING CIRCUIT COMBINING NETWORK DEPLEXER CAME RA VIDEO AMPLIFIER AM MODULATION AMPLIFIER
- 13. A television studio isan installation in which television or video productions take place . TELEVISION STUDIO
- 14. COMPONENTS OF TVSTUDIO • Camera • Lighting • Microphones • Vision mixer and Audio consoles • MSR • VTR • Acoustics • Post production and video effects • Supporting services like AC, UPS
- 15. VISION MIXER • Avision mixer (also called video switcher, video mixer or production switcher) is a device used to select between several different video sources and in some cases mix video sources together and add special effects. • It has many input sources such as cameras, VCR/ server, Graphics/Character Generators,etc. • Out of these input, any source can be taken as output. • Sources can be changed as cut to cut, dissolve, wipe and other special effects.
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- 18. TYPICAL VIDEO CHAIN TYPICALAUDIO CHAIN DistributorVision Mixer LOGO Generator Earth station through Optical Fiber STL Link Sources DistributorAudio Console Analog to AES Converter Earth station through Optical Fiber Sources STL Link
- 19. MSR • It isthe heart of the studio. • Most of the switching electronics is kept e.g. camera base stations, switcher main frame, SPG, Satellite receivers, MW link, DDA & most of the patch panels. • Signal is routed through MSR. • Signal can be Monitored at various stages
- 20. PRODUCTION CONTROL ROOM •MONITOR PROGRAM AND GRAPHICS • VISION MIXER (to select video sources) • Audio console • Add video effect
- 21. MASTER CONTROL ROOM Itconnect the of following equipment • Camera control unit • VTRs • Patch panel • Vision mixer
- 22. • CHARCTER GENERATORS Namesand graphics inserted into programs • CONTROL APPARATUS ROOM Includes the power supply unit UPS room Generator • VIDEO TAPE RECORDER Consists of recorded materials i.e. v.c.r
- 23. OB Van &DSNG • A typical OB Van is usually divided into 4 parts. • The first and largest part is the production area or sitting area for all directors & producers. • The second part of a van is for the audio engineer. • The 3rd part of the van is video tape.
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- 25. • The 4thpart is transmission where the signal is monitored by and engineered for quality control purposes and is transmitted or sent to other trucks. • DSNG is a portable uplinking centre.
- 26. EARTH STATION • EarthStation is a very important part of satellite communication system for broadcasting of signals. • It is an uplink center from which the signals are fed to Satellite for distribution in a specified area covered by the Satellite. • The signal is up-linked from the Earth Station and received by many down link centers in TV broad casting via PDA. • Two Types: 1) Analog, 2) Digital • Digital Earth Stations are widely used because of various advantages over analog.
- 27. Major Components ofDigital Earth Station • PDA (Parabolic Dish Antenna) • FEED • Wave Guide / Low Loss Cable • HPA (TWTA, Klystrons) • Up converter • Modulator • Encoder • Multiplexer • IRD (Integrated Receiver Decoder)
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- 29. TRANSMITTER Aid ofantenna Produces radio wave Connect earth station to satellites Also connect television
- 30. Types of TVTransmitters VLPT’s, LPT’s & HPT’s • A 10 KW HPT is only 10-20% efficient. • It has beamwidth of 360 deg, hence can cover upto 65 kms of area around it. • It has various other supporting units with it to maintain the quality of s/g to be Txd. Like- Monitoring section, blower section, amplification section
- 31. ANTENNA & SATELLITE •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.
- 32. TYPES • Isotropic antenna(idealized) o Radiates power equally in all directions. • Dipole antennas- o Half-wave dipole antenna (or Hertz antenna) o Quarter-wave vertical antenna (or Marconi antenna) • Parabolic Dish / Reflective Antenna
- 34. RESOURCES • http://inventors.about.com/od/tstartinventions/ a/Television.htm • http://en.wikipedia.org/wiki/Broadcast_televisio n_systems •http://www.althos.com/tutorial/TV-advertising- tutorial-broadcast-television-system.html • http://www.scribd.com/doc/44694977/Modern- Communication-Systems-PART-1-TELEVISION • http://www.danalee.ca/ttt/transmission.htm
Editor's Notes
- #2 This template can be used as a starter file for presenting training materials in a group setting.SectionsRight-click on a slide to add sections. Sections can help to organize your slides or facilitate collaboration between multiple authors.NotesUse the Notes section for delivery notes or to provide additional details for the audience. View these notes in Presentation View during your presentation. Keep in mind the font size (important for accessibility, visibility, videotaping, and online production)Coordinated colors Pay particular attention to the graphs, charts, and text boxes.Consider that attendees will print in black and white or grayscale. Run a test print to make sure your colors work when printed in pure black and white and grayscale.Graphics, tables, and graphsKeep it simple: If possible, use consistent, non-distracting styles and colors.Label all graphs and tables.
- #3 Give a brief overview of the presentation. Describe the major focus of the presentation and why it is important.Introduce each of the major topics.To provide a road map for the audience, you can repeat this Overview slide throughout the presentation, highlighting the particular topic you will discuss next.
- #4 This is another option for an Overview slides using transitions.
- #18 What will the audience be able to do after this training is complete? Briefly describe each objective how the audiencewill benefit from this presentation.
- #21 Use a section header for each of the topics, so there is a clear transition to the audience.
- #22 Add slides to each topic section as necessary, including slides with tables, graphs, and images. See next section for sampletable, graph, image, and video layouts.
- #23 Keep it brief. Make your text as brief as possible to maintain a larger font size.
- #29 Add a case study or class simulation to encourage discussion and apply lessons.
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