Broadcasting
-
Upload
komal-choudhary -
Category
Education
-
view
508 -
download
2
description
Transcript of Broadcasting
BROADCASTING
BY:- KOMAL CHOUDHARY
WHAT DOES IT MEAN??? USED TO DESCRIBE COMMUNICATION
CARRIES INFORMATION FROM ONE POINT TO ALL OTHERS
ONE SENDER AND MANY RECEIVERS
HISTORY
TERM ADOPTED BY EARLY RADIO ENGINEERS FROM MIDWESTERN US
VERY LARGE SEGMENT OF MASS MEDIA
COMPOSED OF ANALOG SIGNALS USING ANALOG TRANSMISSION
TYPES OF BROADCASTING
TELEPHONE BROADCASTING(1881-1932) RADIO BROADCASTING(1906-1920) TELEVISION BRAODCASTING(1925-1930) CABLE RADIO & TELEVISION(1928) DIRECT BROADCAST SATELLITE WEBCASTING
ROLE OF SATELLITE
ALLOWS RADIO, TELEVISION & TELEPHONE TRANSMISSION
TO BEND THE SIGNALS ROUND THE EARTH
LIVE BROADCASTING
LIVE BROADCASTING
LIVE TELEVISION LIVE RADIO INTERNET TELEVISION INTERNET RADIO LIVE BLOGGING STREAMING MEDIA
LIVE TELEVISION
BROADCAST IN REAL TIME
USED FOR ATTRACTING VIEWERS THROUGH:
1. ENTERTAINMENT2. NEWS3. TV EPISODES4. SPORTS
LIVE RADIO
BROADCAST WITHOUT DELAY
USED TO LISTEN:1. DRAMAS2. COMEDIES 3. QUIZ SHOWS4. CONCERTS
INTERNET TELEVISION
ONLINE TV
CONNECTED THROUGH INTERNET
DIGITAL DISTRIBUTION OF TELEVISION
VIDEO STREAMING TECHNOLOGY
INTERNET RADIO
AUDIO SERVICE THROUGH INTERNET.
MUSIC STREAMING ON INTERNET (WEBCASTING)
ACCESSIBLE FROM ANYWHERE
LIVE BLOGGING
Blog post which is intended to provide a rolling textual coverage of an ongoing event.
Increased in usage by news organization.
Similar to live television or radio.
STREAMING MEDIA
PROCESS OF DELIVERING MEDIA.
RECEIVED BY USER AND DELIVERED BY PROVIDER.
STREAMING OF VIDEO AND AUDIO.
Digital audio broadcasting Analog radio system still
follow basic principle of frequency modulation.
Transmission quality varies greatly depending upon multi-path effects and interference.
It provides clear sound quality, immune to interference and multi-path propagation effects.
ADVANTAGES
Better signal to noise ratio.
Reduced interference
Possible signal frequency networks.
Less multi-path distortion.
Automatic tuning
Auxiliary data services.
TRANSPORT MECHANISMS1. Main service channel (MSC): Carries all user data, i.e audio,
multimedia data. Consists of common interleaved frames.2. Fast information channel: Contains fast information blocks. Controls all information required for
interpreting the configuartion and content of MSC.
COMPONENTS OF DAB sender
DIGITAL VIDEO BROADCASTING 1991 foundation of the
ELG (European Launching Group)goal: development of digital television in Europe
1993 renaming into DVB (Digital Video Broadcasting)goal: introduction of digital television based on satellite transmission cable network
technology later also terrestrial
transmission
DVB DATA BROADCASTING
1. Data pipe: Simple,
asynchronous, end to end delivery of data.
2. Data streaming: Streaming oriented,
asynchronous, synchronized, end to end data delivery.
3. Multiprotocol encapsulation:
Transport of data network protocol on MPEG-2 transport stream.
4. Data and object carousels:
Periodic transmission of data and objects, platform independent
DVB FOR HIGH SPEED INTERNET
Can be used for high-bandwidth, asymmetrical access.
An information provider.
User request for data.
With the help of satellite provides data to user.