1. Types television networks
Home entertainment
Types television networks

2. Types of television networks
Satellite TV
Terrestrial TV
IP TV

3. Satellite TV
Television channels send programme signals to an uplink satellite dish which is pointed at a specific satellite.
The transponder in the satellite sends the signal back to earth to the receiving dish which usually of an individual household.
LNB in the receiving dish amplifies the signal to the receiver box.
As the signals are scrambled or encrypted, the receiver box needs a viewing card to decrypt the signals, then they are converted into a form that creates the television pictures.

5. Terrestrial TV
TV channels use a powerful antena at a broadcast centre to transmit the programme signal to transmitters where audio and video are combined into one signal which is transmitted to the aerials of individual houses, then to televisions that have inbuilt receivers to convert the signal into picture and audio.

6. IP TV
Set-top boxes that receive input from your Internet connection (either via an Ethernet cable or Wi-Fi), decode the signal, and display a picture on your high-definition, widescreen TV.

7. Home entertainment
Home entertainment can come equipped with the following:
HDTV
Loudspeakers
Microphone
DVD/blu-ray Player
USB port
Remote control
3D glasses

8. Features of home entertainment systems
Page 5, Q 3 Answer: What can your HDTV do?

9. Features of home entertainment systems
Can access digital media stored on e.g. CDs, DVDs, Blu-ray, flash memory
Can access remotely stored digital media from e.g. the internet, media streamers, locally stored files
Can accept/use/play a range of audio/video formats
Provides a number of different sound and vision outputs for connection to other devices
Can use several loudspeakers for surround/multi-channel sound
It usually has a remote control to e.g. adjust sound output format
Can have HD television for high-quality pictures
Can have 3-D television for greater realism in images
Can have a hard-disk recorder

10. Music centres Music centres can come equipped with the following:
FM(Frequency Modulation) Tuner
CD player
Speakers
USB port
Memory stick
Secure Digital memory card
MP3 and WMA formats
Task:
Write 2 important points from pages 112 and 113 for each of the above equipment.

11. Video on demand (VOD) Page 7 Q 6 a Use of menu to select content
Streamed/downloaded video/audio content from remote server
Distributed by IPTV over a network
Received by set top box/computer/mobile device
Viewer can watch/listen at their own convenience/when they want to.
Use of pause/rewind/fast forward

12. TASK
Page 7 Q 6b - Differences between MP3 players and CDs.

13. Differences between MP3 players and CDs
MP3 uses compression
CD audio uncompressed
MP3 players use hard disks/flash memory
CD audio stored on optical media
MP3 players have large capacity/store more songs/tracks than CDs.
MP3 player content can be changed/deleted
CD content cannot be changed