Introduction Of DVB Standards
DVB stands for Digital Video Broadcasting. DVB is group of different standards which do digital broadcasting on existing equipments like Cable, Satellite and our terrestrial equipments. Some of europeon broadcasters and regularities with manufactures formed Europeon Launching Group (ELG). Which later on adopted by many organizations and formed DVB group.
DVB is now a group of more than 270 organizations. It is international industry published by JTC or ETSI. Where JTC is acronym for Joint Technical Committee and ETSI is acronym for Europeon Telecommunications Standard Institute.
Transmission Digital Video Broadcasting Standards
DVB-C & DVB-C2
DVB-C stands for Digital Video Broadcasting Cable. This standard was introduced in 1994 by ETSI. It is widely adopted by cable tv industries worldwide. It is used to send digital video streams from QAM for cable tv subscribers. In DVBC different kinds of QAM are used according to bandwidth requirement.
DVB-C2 (Second generation) was introduced in the 2008. DVB-C2 is near about 30 percent more efficient than DVBC. It provides 83 Mbps space in 8 Mhz of bandwidth. Which is very great in comparative to DVBC.
DVB-T & DVB-T2
DVB-T2 stands for Digital Video Broadcasting-Second Generation Terristrial. This is advanced version of DVB-T. DVB-T2 is used for transmitting HD, SD and radio services too. It transmit compressed data in physical layer pipes. It is also used for rebroadcasting where signals are received by the cable tv headend and then rebroadcasted.
Know More ABout DVBT & DVBT2 Difference
DVB-S & DVB-S2
DVB-S is acronym for Digital Video Broadcasting-Satellite. This standard is used for satellites tv broadcasting covering worldwide area. Whereas DVBS2 is advanced version of DVBS. This advanced version is very powerful for delivering satellite broadband services.
Know More About DVBS & DVB2 Difference
DVB-S2X
DVB-S2X is called the extension of the DVB-S2. Because it is 51 percent more efficient than DVB-S2. Because it uses high modulation techniques with efficient filtering.
DVB-SIS
DVB-SIS stands for Single Illumination System. it is combination of DVBS, DVBS2 and DVBT2. In this system signals are uplink to satellite and then received with DTH dishes as well as with DVBT2 transmitters. These DVBT2 transmitters re-transmit the same signal to DVBT2 receivers at subscriber’s home.
DVB-H
DVB H stands for Digital Video Broadcasting Handheld. These handheld devices are mobiles and PDAs. PDAs are Personal Digital Assistant devices. It is also known as Mobile TV.
DVB H standard was introduced by ETSI in November 2004. DVB H was developed by some modifications in DVB T for efficient delivery of services in mobile.
Know More About DVB H
DVB-SH
DVB SH stands for Digital Video Broadcasting Satellite Handheld. It can be called as advanced version of DVB H. Because in this system services are delivered from satellite to handheld devices too. It uses the S band frequencies.
DVB SH it is used for both satellite signal delivery to handheld devices and terrestrial signal deliver for handheld devices.
DVB-CID
DVB CID stands for Digital Video Broadcasting Carrier Identifier. It was introduced in MAY 2013. DVB CID is property for reducing the interference between satellite signals. In this property type of modulation, signal protocol and coding of channel is considered.
These interference are due to miss configuration of the equipment and failure of equipment.
DVB-CS
DVB CS is know as Digital Video Broadcasting Cable Satellite. This is the combination of DVB C and DVB S. This is the standard for receiving the QPSK from Large Antenna and distributing it in SMATV Network. The reception system is known as SMATV Headend where SMATV represents Satellite Master Antenna Television. Through SMATV Network the signal goes to subscriber’s house for the reception of services. Where SMATV Network can be RF , QPSK IF and QPSK S.
In this system a IRD (Integrated Receiver Decoder) needs to install at subscriber end to decode the signals.
DVB-MDS
DVB MDS is know as DVB MVDS. Where DVB MVDS stands for Digital Video Broadcasting Multipoint Video Distribution System.
In this system at transmitting station the input interface is MPEG 2 transport multiplex which is having the connection with multiplexer and at the receiving side it is having the MPEG 2 transport multiplex interface which is connected to demultiplexer.
DVB-DSNG
DVB DSNG stands for Digital Video Broadcasting Digital Satellite News Gathering. DSNG systems are used to uplink the audio video data to the transponder via dish. The transponder tranpond the signal as per required location.
The audio video signal with data goes into the multiplexer. This multiplexed output passes through various steps in satellite channel adapter. This system utilities the QPSK modulation.
Source Coding DVB Standards
DVB-MPEG
DVB MPEG is acronym for Digital Video Broadcasting Moving Picture Expert Group. DVB MPEG is a standard which provides the specs for broadcasting of audio, video. It also let the know how to use audio and videos for broadcasting and cable tv systems. For example it explain HEVC encoding for HDTV transmission.
Know More About What Is HEVC Encoding
“This is the part 1 of All DVB Standards Rest of the Digital Video Broadcasting standards will be published in Upcoming Articles”
Know More About All DVB Standards – Part 2
reference : dvb
