Datacasting services around the world Datacasting

1 datacasting services around world

1.1 north america

1.1.1 ambient information network
1.1.2 rbds
1.1.3 directband
1.1.4 moviebeam
1.1.5 tv guide on screen
1.1.6 atsc-m/h
1.1.7 updatetv


1.2 australia
1.3 malaysia
1.4 south africa
1.5 united kingdom
1.6 worldwide

1.6.1 outernet

datacasting services around world
north america
ambient information network

ambient information network, datacasting network owned ambient devices presently hosted u.s.a. mobility, u.s. paging service , focuses on information of interest local (or larger) area, such weather , stock indices, , paid subscription ambient provide particular device more personalized information.with dish sat

rbds

a slight variation of european radio data system, rbds carried on 57khz subcarrier on fm radio stations. while intended program-associated data, can used datacasting purposes including paging , dgps.

directband

directband, owned microsoft, uses 67.65 khz subcarrier leased fm radio stations. subcarrier delivers 12 kbit/s (net after error correction) of data per station, on 100 mb per day per city. data includes traffic, sports, weather, stocks, news, movie times, calendar appointments, , local time.

moviebeam

the now-defunct moviebeam service used dntsc technology dotcast transmit 720p hdtv movies in lower vestigial sideband of ntsc analog tv. set-top box stored movies viewed on demand fee. distributed through pbs s national datacast.

tv guide on screen

tv guide on screen advertising-supported datacast sent 1 local station in each media market. supplements or replaces limited electronic program guide sent each tv station, mandated u.s. federal communications commission (fcc).

atsc-m/h

atsc-m/h yet mobile tv standard, although transmitted , controlled broadcasters instead of third party, , therefore free air (although can subscription-based). technical standpoint, ip-encapsulated datacast of mpeg-4 streaming video, alongside atsc mpeg transport stream used over-the-air hdtv/sdtv broadcasting. heavy error correction, separate native atsc, compensates atsc s poor mobile (and fixed) reception.

updatetv

updatetv service used brands of tv sets , other atsc tuners update firmware via over-the-air programming. transmitted on pbs stations via national datacast.

australia

australian broadcast infrastructure company broadcast australia undertook three-year trial in sydney of datacasting service using dvb-t system use in australia.

the trial consisted of number of services on 1 standard 7mhz multiplex, collectively known digital forty four.

the collection included:

a combined program guide free-to-air broadcasters (channel 4)
abc news, sport, , weather items (channel 41)
channel nsw (link) government , public information, including real time traffic information , life surf webcam images (channel 45)
australian christian channel (channel 46)
expo home shopping (channel 49) and
federal parliamentary audio broadcasts.

more near-australia wide broadcast of datacasting channel called mytalk commenced on april 13, 2007. broadcasting part of multiplex on southern cross , southern cross ten stations, provided news, weather , other information, available free able tune in. stream consisted of text applicable viewer s location , 4:3 video window of broadcast tv relevant southern cross/southern cross ten station.

on february 25, 2008, mytalk ceased broadcasting. digital forty 4 shut down @ midnight on night of april 30, 2010.

malaysia

malaysian multi-channel pay-tv operator, mitv corporation sdn bhd has launched ip on uhf service in september 2005. full digital broadcast capacity being used deliver ip services such multicast streaming , datacasting.

south africa

mindset network has developed ip satellite datacast platform distribution of educational , health content sites around south africa , increasingly throughout rest of africa well. model forward , store model allowing users of platform view content in on-demand fashion. content distributed in way includes video content, print-based content (in form of pdf files), interactive computer-based multimedia content.

significantly, model includes access gprs network allows receiving sites communicate mindset central server. communications include statistics physical health of machine (e.g. power status, disk drive usage) usage statistics indicating content has been viewed.

the model includes distributed deployment of moodle lms, allowing users take assessments , have results transmitted via gprs mindset server accreditation.

united kingdom

teletext used extensively on analogue channels; type of datacasting using overscan on analogue transmissions. teletext limited , ceefax main providers. within digital television digital teletext name used extensively although technology used provide service unrelated , uses mheg-5 uk profile.

worldwide
outernet

outernet s goal provide free access content web through geostationary , low earth orbit satellites, made available parts of world. project uses datacasting , user datagram protocol through both small satellites, such cubesats, , larger, more conventional geostationary communications satellites in satellite constellation network. wi-fi enabled devices communicate satellite hotspots, receive data broadcasts satellites.