DTH- Rajan
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DTH (direct-to-home) technology allows for satellite programs to be received directly by homes without the need for a local cable operator. It consists of components like satellites, encoders, multiplexers, and modulators that transmit content, as well as DTH receivers in homes. Content is uplinked to satellites and downlinked to receivers via satellite dishes. DTH offers better picture quality than cable TV and allows for interactive services like video on demand. While still in its early stages in India, DTH is growing rapidly and expected to further develop with services like internet access.
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DTH- Rajan
- 1. Welcome Presentation On Direct to Home Technology Presented by: RAJAN KUMAR
- 6. Services uplinked to Satellites Services downlinked via receive satellite dish and fed in to STB Content “on demand” servers QPSK Modulator Real Time TV services PROCESS Enc1 Enc2 MUX
- 8. Basic Elements of DTH System and Signal Flow
- 9. Layered Model for DTV Routing, Regeneration Distribution Sampling, Quantizing, Formatting Display Multiplexing, Fragmenting Remultiplexing Modulation, Framing and Addressing Demodulation, Delivery and Extraction Composing Format Conversion Compression Formatting Channel Reception Channel Insertion Program Compression Program Decoding
- 10. Receiver Receiver Multiplexer Modulator Playback & Encoding C-band transponder Ku-band transponder DTH Teleport Chain HPA Upconverter
- 12. DECRYPTION BASE BAND VIDEO/AUDIO DETECTION OUT OF BAND CONTROL DATA MODUL - ATOR A V VIDEO OUT AUDIO OUT RF OUT COAX RF IN WHEN STB IS ENERGISED RELAY AT INPUT AND OUT PUT PORT CONNECTS STB CIRCUIT OTHERWISE RF SIGNAL GETS PATH TO RF OUT TO PLAY OUT FTV RELAY SCHEMATIC SHOWING FUNCTIONING OF SET TOP BOX SET TOP BOX
- 13. Cable Head-end Private Home Private Home Private Home DTH Receive Facility
- 14. Delivering Interactive TV Applications Internet Dial-Up Back Channel TCP/IP Transport Stream Data /TV/Radio Server Internet Multiplexer Content Encapsulation Content Transmission Content Presentation
- 19. GROWTH OF DTH USERS 2007 to 2015…Growth of 683 %
- 20. LATEST IN DTH IN INDIA Recording of TV programs remotely using mobile device.
- 21. Satelite LCD & DVD by Videocon DTH signal can be received by this LCD television without using any STB. STB having All the functios of a DVD player .
- 24. REFERENCES www.mindstein.com www.airtel.in www.tvasia.com www.wikipedia.com www.videocond2h.com Newspapers
- 25. ?
Editor's Notes
- DVB-S is the original Digital Video Broadcasting forward error coding and modulation standard for satellite television. http://en.wikipedia.org/wiki/DVB-S : DVB-S is used in both MCPC and SCPC modes for broadcast network , as well as for direct broadcast satellite services like Sky Digital (UK) via Astra in Europe, Dish Network and Globecast in the U.S. and Bell TV in Canada . The transport stream delivered by DVB-S is mandated as MPEG-2 . This technology uses 11/12 GHz Frequency band.
- To understand the type of instruments needed for confidence monitoring, we need to understand a key way digital television differs from analog television. <MC> As we see in this diagram, digital television systems use various digital signal processing and digital data processing techniques to improve quality and efficiency. Key techniques include: sampling, quantizing, and formatting the digital signal in conformance to standards using MPEG compression techniques to reduce bandwidth requirements combining multiple programs into a single stream and adding control information using digital modulation and demodulation techniques for broadcast transmission using network protocols for distribution over fiber or copper networks, and decoding and formatting the video and audio information for presentation. During the journey from source to destination, you may need to route or regenerate the signal. In the process, content may move up and down through these layers and may be remultiplexed, or may change format. We can best understand how these different processing steps interact and impact broadcast quality by organizing them into a layered model. Specifically, we can use three layers to model a digital television broadcast system. <MC> In the first layer we need to ensure the proper formatting of the digital video and audio signal, <MC> in the next layer we need to ensure these signals are correctly compressed and aggregated together, and <MC> in the last layer, we need to ensure the signals are properly distributed or transmitted.