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digital television

- working schema

This opera is licensed under a Creative Commons Attribution 3.0 Unported License

satellite EPG Electtronic Programming Guide subtitle and multichannel audio

satellite repeater

satellite dish

DIGITAL SATELLITE binary data

01001011

workable and transportable

repeater

the quality of digital transmission is better than analog one

broadcaster

requires high transmission capacity

antenna TV

TV

DIGITAL TERRESTRIAL

user

optical fiber

IPTV (Internet Protocol Television)

telephone network WEB

decoder

desktop

palmtop

TV MOBILE telephone

1941 First representation of digital information with Atanasoft–Berry Computer

1995 digital television technology is actually ready for wide use

1995 real diffusion of digital television


digital cable television (IPTV)

- working schema

This opera is licensed under a Creative Commons Attribution 3.0 Unported License

user must pay for subscription

â‚Ź

subscription

film and tv series on demand pay per view programs and live news

digital terrestrial

FASTWEB TV

amount of advertising: 0%

0%

aerial TV no advertising

only one decoder per house

on demand segnal

broadcaster

TV

optical fiber

live segnal

decoder

very expensive

home banking

user request interaction with the broadcaster

user

no sat dish no smart card

user request

cable must reach each house

user can use the internet connection

desktop

web segnal

WEB

the telephone is not the only way to communicate with the broadcaster

telephone

1994 Fastweb connects with optical fiber the entire city of Milan

2006 Sky holds a commercial alliance with Fastweb

2008 Telecom, Tiscali e Infostrada cease their IPTV service, contributing to the creation and distribution of ADSL TV in Italy


digital terrestrial television (DTT)

- working schema

This opera is licensed under a Creative Commons Attribution 3.0 Unported License

advertising

user must pay for yearly subscription

subscription

multilingual and high definition broadcasting

receivable in every part of the served area

large number of channels amount of advertising: 20%

20% broadcaster

one decoder per every house

no video on demand

repeater

high quality image/audio

decoder

TV aerial

TV

no satellite dish user can interact with the broadcaster through the remote control

a lot of remote controls in the house

the telephone is not the only way to communicate with the broadcaster

telephone

2003 first digital transmissions in Italy in Sardegna and Valle d’Aosta

2010 every transmission in Italy must be digital

user


digital satellite television (SAT TV)

- working schema

This opera is licensed under a Creative Commons Attribution 3.0 Unported License

user must pay an yearly subscription

â‚Ź

subscription

pay per view large number of channels

satellite

amount of advertising: 10%

10% broadcaster

satellite repeater

high quality image audio

decoder

SAT dish

TV

SAT dish needed user can interact with the broadcaster through the remote control a lot of remote controls in the house

the telephone is not the only way to communicate with the broadcaster

telephone

â‚Ź

1998 first digital television in italy appeared as digital satellite television

2003 Sky was born from the union of italian Tele+ and Stream

user


digital mobile television

- working schema

This opera is licensed under a Creative Commons Attribution 3.0 Unported License

user must pay for subscription

â‚Ź

subscription

pay per view video on demand

video on demand user request

broadcaster

receivable in every part of the served area

telephone network user can use the internet connection

web signal

WEB

â‚Ź

palmtop

user needs an expensive palmtop

user


digital television