Types television networks Home entertainment Types television networks

Types of television networks Satellite TV Terrestrial TV IP TV

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.

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.

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.

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

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

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

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.

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

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

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