861:, such as a low-cost set-top-box running custom firmware. The software to transmit web pages over multicast is fairly easy to implement; some of the technology has been already developed. Content received can be stored automatically on the set-top box's built in hard drive, served to users over Wi-Fi or Ethernet. A fractional broadcast multiplex can transmit up to hundreds of gigabytes of content each day.
121:
25:
731:, or "Knapsack" in Persian is a datacasting technology that uses existing set-top-boxes for reception of files without requiring an Internet connection. No special equipment is required, the transmission is in the form of a standard video stream containing embedded data that is 'recorded' to a USB stick and then viewed using special software on a PC.
66:
898:
Despite the very high cost of satellite bandwidth, broadcasting to hundreds of thousands or millions of receivers may well be cheaper than using the
Internet. No build-out and maintenance of costly physical infrastructure (e.g. fiber optic cables) is required for the end-user, only a satellite dish
750:
Significantly, the model also includes access to a GPRS network that allows the receiving sites to communicate back to the
Mindset central server. Communications include statistics about the physical health of the machine (e.g. power status, disk drive usage), as well as usage statistics indicating
742:
has developed an IP satellite datacast platform for the distribution of educational and health content, to sites around South Africa and the rest of Africa as well. The model is a forward and store model, allowing users of the platform to view content in an on-demand fashion. Content distributed in
388:
presently hosted by U.S.A. Mobility, a U.S. paging service which focuses on information of interest to the local (or larger) area, such as weather and stock indices, and personalized information will be provided with a paid ambient subscription on that particular device.
889:
It is much more difficult, on a technical and political level to jam a satellite signal compared to blocking a website. Data streams can be transmitted alongside television channels. An attempt to jam the data stream will end up jamming the TV stations as well.
773:
on analogue transmissions. Teletext
Limited and Ceefax were the main providers. Within digital terrestrial television, the Digital Teletext name is used extensively although the technology used to provide this service is unrelated and uses the
696:
stations, it provided news, weather and other information, available free to anyone able to tune in. The stream consisted of text applicable to the viewer's location and a 4:3 video window of terrestrial TV from the relevant
798:
blockchain via a global network of broadcast satellites. It also gives everyone the ability to transmit arbitrary files at low cost which can be received in total anonymity worldwide by anyone with a standard
319:(DTT), although the specifics of implementation are not always defined. For analog TV, moderate and low bandwidths are used via overscan and the Vertical Blanking Interval (VBI), respectively.
720:
launched its IP-over-UHF service in
September 2005. The full digital broadcast capacity was used to deliver IP services which such as multicast streaming and datacasting.
443:) of data per station, for over 100 MB per day per city. Data includes traffic, sports, weather, stocks, news, movie times, calendar appointments, and local time.
850:
Datacasting has certain advantages over using the
Internet, specifically concerning privacy and censorship resistance, which can be considered important in an era of
814:'s goal is to provide free access to content from the web through geostationary and Low Earth orbit satellites, made available effectively to all parts of
363:
1060:
933:
881:
and making many censorship laws virtually impossible to enforce; thus restoring some of the 'anarchic freedom' of the early days of the
Internet.
300:. An electronic program guide is typically included, though this feature is sometimes considered inherent to the digital broadcast standard.
1085:
84:
76:
579:
broadcasting. Heavy error correction, separate from that native to ATSC, compensates for ATSC's poor mobile (and often fixed) reception.
1004:
708:
On
February 25, 2008, MyTalk ceased broadcasting. Digital Forty Four was shut down at exactly midnight on the night of April 30, 2010.
979:
531:
224:
204:
102:
52:
1170:
619:
1160:
439:, uses the 67.65 kHz subcarrier leased from FM radio stations. This subcarrier delivers about 12 kbit/s (net after
316:
246:
142:
358:
packets over DVB-H broadband downstream channel combined with a return channel over a mobile communications network such as
288:
updates, and other data that may or may not relate to the broadcast programs. It can also include interactive elements like
758:
LMS, allowing users to take assessments and have the results transmitted via GPRS to the
Mindset server for accreditation.
857:
Both satellite and terrestrial broadcast multiplexes can carry multicast IP data. This can be forwarded onto a LAN with a
549:
standard, although it is transmitted and controlled by the broadcasters instead of a third party, and is therefore mostly
185:
899:
or TV antenna is necessary, allowing services such as educational materials to be delivered to underserved communities.
668:
359:
157:
138:
38:
928:
665:) Government and Public Information, including real time traffic information and life surf webcam images (Channel 45)
558:
164:
131:
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698:
689:
918:
827:
717:
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607:
523:
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874:
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413:
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from the
Internet, thus providing a system much more secure than Internet-based anonymity networks such as
908:
819:
576:
1128:
1155:
572:
153:
366:. The set of specifications for IP Datacast (phase1) was approved by the DVB project in October 2005.
953:
870:
625:
277:
877:. This could ultimately put a complete stop to law enforcement attempts to censor material on the
702:
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285:
250:
237:
Datacasting (data broadcasting) is the transmission of data over a wide area using
791:
658:
550:
515:
485:
238:
120:
1086:"ATSC Datacasting Paves Way for Flexibility of ATSC 3.0 in Distance Education"
684:
More recently a near-Australia wide broadcast of a datacasting channel called
595:
527:
432:
402:
336:
332:
320:
546:
481:
455:
436:
297:
257:
1039:
769:
was used extensively on analogue channels; a type of datacasting using the
628:
undertook a three-year trial in Sydney of a datacasting service using the
452:
811:
770:
766:
603:
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340:
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878:
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728:
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The trial consisted of a number of services on one standard 7 MHz
253:
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commenced on April 13, 2007. Broadcasting as part of the multiplex on
923:
858:
800:
775:
755:
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this way includes video content, print-based content (in the form of
685:
652:
A combined program guide for the free-to-air broadcasters (Channel 4)
591:
562:
1108:"Satellite Internet Costs – transponder and VSAT equipment prices"
913:
835:
815:
629:
610:. This is also transmitted on PBS stations via National Datacast.
417:
351:
261:
569:
478:
470:
467:
421:
328:
312:
289:
273:
347:, defining a few basics but also allowing for later expansion.
744:
496:
308:
114:
59:
18:
384:
Ambient
Information Network, a datacasting network owned by
272:
Datacasting often provides a variety of information such as
747:
files), and interactive computer-based multimedia content.
249:(DTT) signals. However, datacasting can also be applied to
241:. It typically refers to supplemental information sent by
416:, it can also be used for datacasting purposes including
754:
The model also includes a distributed deployment of the
518:-supported datacast sent by one local station in each
1005:"DAB Eureka-147: A European vision for digital radio"
838:
enabled devices would communicate with the satellite
145:. Unsourced material may be challenged and removed.
557:-based). From a technical standpoint, it is an IP-
980:"Public TV Advances Public Safety Communications"
842:, which receive data broadcasts from satellites.
1129:"Innovations in Distance Education: Datacasting"
655:ABC news, sport, and weather items (Channel 41)
934:MPEG Unidirectional Lightweight Encapsulation
822:(UDP) through both small satellites, such as
8:
624:Australian broadcast infrastructure company
354:for the technical elements required to send
315:standards support broadband datacasting via
53:Learn how and when to remove these messages
522:. It supplements or replaces the limited
350:The term IP Datacasting (IPDC) is used in
1019:"Blockstream: Satellite Network Coverage"
716:Malaysian multi-channel pay-TV operator,
225:Learn how and when to remove this message
205:Learn how and when to remove this message
103:Learn how and when to remove this message
530:, which is already mandated by the U.S.
343:standards both allow for datacasting on
945:
828:geostationary communications satellites
680:Federal parliamentary audio broadcasts.
846:Advantages over Internet transmission
370:Datacasting services around the world
16:Broadcasting of data over a wide area
7:
590:is a service used by some brands of
143:adding citations to reliable sources
869:In extreme cases a receiver can be
818:. The project uses datacasting and
401:, RBDS is carried on a 57 kHz
397:A slight variation of the European
954:"Satellite Data Casting Solutions"
75:tone or style may not reflect the
14:
532:Federal Communications Commission
412:. While originally intended for
34:This article has multiple issues.
929:MPEG Multiprotocol encapsulation
826:, and larger, more conventional
632:system for use in Australia.
495:. This was distributed through
119:
85:guide to writing better articles
64:
23:
620:Digital television in Australia
130:needs additional citations for
42:or discuss these issues on the
1061:"ATSC 3.0 Interactive Content"
1040:"Blockstream: Satellite Queue"
803:receiver card or USB adapter.
751:what content has been viewed.
677:Home Shopping (Channel 49) and
335:used for analog FM radio. The
317:Digital Terrestrial Television
247:digital terrestrial television
1:
669:Australian Christian Channel
380:Ambient Information Network
1187:
978:Cait (29 September 2015).
617:
794:Satellite broadcasts the
648:The collection included:
553:(although it can also be
919:Multimedia home platform
718:MiTV Corporation Sdn Bhd
639:, collectively known as
608:over-the-air programming
524:electronic program guide
488:stored the movies to be
984:Protect My Public Media
871:physically disconnected
832:satellite constellation
414:program-associated data
79:used on Knowledge (XXG)
1171:Interactive television
909:Interactive television
820:User Datagram Protocol
577:terrestrial television
331:are medium and narrow
83:See Knowledge (XXG)'s
1161:Broadcast engineering
787:Blockstream Satellite
573:MPEG transport stream
958:BusinessCom Networks
473:movies in the lower
139:improve this article
626:Broadcast Australia
298:educational content
278:weather forecasting
243:television stations
703:Southern Cross Ten
694:Southern Cross Ten
642:Digital Forty Four
512:TV Guide On Screen
507:TV Guide On Screen
475:vestigial sideband
859:suitable receiver
852:mass surveillance
501:National Datacast
399:Radio Data System
282:traffic reporting
235:
234:
227:
215:
214:
207:
189:
113:
112:
105:
77:encyclopedic tone
57:
1178:
1166:Radio technology
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568:, alongside the
490:viewed on demand
441:error correction
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87:for suggestions.
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1088:. February 2021
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740:Mindset Network
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566:streaming video
545:is yet another
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386:Ambient Devices
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526:sent by each
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375:North America
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348:
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345:digital radio
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159:
156: –
155:
154:"Datacasting"
151:
150:Find sources:
144:
140:
134:
133:
128:This article
126:
122:
117:
116:
107:
104:
96:
93:November 2021
86:
80:
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71:
62:
61:
56:
54:
47:
46:
41:
40:
35:
30:
21:
20:
1156:Broadcasting
1132:. Retrieved
1123:
1111:. Retrieved
1102:
1090:. Retrieved
1080:
1068:. Retrieved
1055:
1043:. Retrieved
1034:
1022:. Retrieved
1013:
999:
987:. Retrieved
983:
973:
961:. Retrieved
957:
948:
897:
888:
868:
856:
849:
810:
790:
778:UK profile.
765:
753:
749:
738:
735:South Africa
727:
715:
707:
683:
671:(Channel 46)
647:
640:
634:
623:
586:
561:datacast of
559:encapsulated
555:subscription
541:
520:media market
510:
466:to transmit
450:
431:
396:
383:
349:
302:
286:stock market
271:
264:broadcasts.
251:digital data
236:
221:
216:
201:
192:
182:
175:
168:
161:
149:
137:Please help
132:verification
129:
99:
90:
74:
50:
43:
37:
36:Please help
33:
792:Blockstream
724:Middle East
659:Channel NSW
596:ATSC tuners
551:free-to-air
516:advertising
486:set-top box
435:, owned by
333:subcarriers
256:carried on
239:radio waves
1150:Categories
940:References
894:Efficiency
885:Censorship
618:See also:
594:and other
528:TV station
433:DirectBand
428:DirectBand
403:subcarrier
337:EUREKA 147
321:DirectBand
245:alongside
165:newspapers
39:improve it
834:network.
816:the world
782:Worldwide
705:station.
637:multiplex
614:Australia
575:used for
547:mobile TV
493:for a fee
482:analog TV
456:MovieBeam
447:MovieBeam
437:Microsoft
258:analog TV
195:July 2017
45:talk page
903:See also
840:hotspots
824:CubeSats
812:Outernet
807:Outernet
771:overscan
767:Teletext
712:Malaysia
604:firmware
588:UpdateTV
583:UpdateTV
543:ATSC-M/H
538:ATSC-M/H
451:The now-
341:HD Radio
294:shopping
268:Overview
1134:30 July
1113:31 July
1092:31 July
1070:31 July
1045:30 July
1024:30 July
989:13 July
963:13 July
879:darknet
865:Privacy
796:Bitcoin
729:Toosheh
592:TV sets
534:(FCC).
464:Dotcast
453:defunct
254:signals
179:scholar
1066:. ATSC
924:UDcast
801:DVB-S2
776:MHEG-5
756:Moodle
686:MyTalk
602:their
600:update
563:MPEG-4
514:is an
484:. The
418:paging
311:, and
290:gaming
181:
174:
167:
160:
152:
1064:(PDF)
914:DVB-H
836:Wi-Fi
830:in a
630:DVB-T
460:dNTSC
352:DVB-H
296:, or
262:radio
186:JSTOR
172:books
1136:2021
1115:2021
1094:2021
1072:2021
1047:2021
1026:2021
991:2024
965:2024
692:and
675:Expo
663:link
606:via
570:ATSC
479:NTSC
471:HDTV
468:720p
422:dGPS
420:and
393:RBDS
364:UMTS
360:GPRS
339:and
329:RBDS
323:and
313:ISDB
305:ATSC
303:The
274:news
158:news
875:Tor
854:.
745:PDF
598:to
499:'s
497:PBS
477:of
405:on
362:or
325:RDS
309:DVB
260:or
141:by
1152::
982:.
956:.
645:.
503:.
424:.
407:FM
356:IP
307:,
292:,
284:,
280:,
276:,
48:.
1138:.
1117:.
1096:.
1074:.
1049:.
1028:.
1007:.
993:.
967:.
701:/
661:(
327:/
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222:(
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202:(
197:)
193:(
183:·
176:·
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162:·
135:.
106:)
100:(
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91:(
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55:)
51:(
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