872:, 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.
132:
36:
742:, 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.
77:
909:
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
761:
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
753:
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
399:
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.
900:
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.
784:
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
707:
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
809:
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
330:(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.
731:
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.
454:) 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.
861:
Datacasting has certain advantages over using the
Internet, specifically concerning privacy and censorship resistance, which can be considered important in an era of
825:'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
374:
1071:
944:
892:
and making many censorship laws virtually impossible to enforce; thus restoring some of the 'anarchic freedom' of the early days of the
Internet.
311:. An electronic program guide is typically included, though this feature is sometimes considered inherent to the digital broadcast standard.
1096:
590:
broadcasting. Heavy error correction, separate from that native to ATSC, compensates for ATSC's poor mobile (and often fixed) reception.
1015:
719:
On
February 25, 2008, MyTalk ceased broadcasting. Digital Forty Four was shut down at exactly midnight on the night of April 30, 2010.
990:
542:
235:
215:
113:
95:
87:
63:
1181:
630:
1171:
450:, uses the 67.65 kHz subcarrier leased from FM radio stations. This subcarrier delivers about 12 kbit/s (net after
327:
257:
153:
369:
packets over DVB-H broadband downstream channel combined with a return channel over a mobile communications network such as
299:
updates, and other data that may or may not relate to the broadcast programs. It can also include interactive elements like
769:
LMS, allowing users to take assessments and have the results transmitted via GPRS to the
Mindset server for accreditation.
868:
Both satellite and terrestrial broadcast multiplexes can carry multicast IP data. This can be forwarded onto a LAN with a
560:
standard, although it is transmitted and controlled by the broadcasters instead of a third party, and is therefore mostly
196:
910:
or TV antenna is necessary, allowing services such as educational materials to be delivered to underserved communities.
679:
370:
168:
149:
49:
939:
676:) Government and Public Information, including real time traffic information and life surf webcam images (Channel 45)
569:
175:
1176:
709:
700:
929:
838:
728:
673:
618:
534:
182:
885:
842:
424:
142:
884:
from the
Internet, thus providing a system much more secure than Internet-based anonymity networks such as
919:
830:
587:
1139:
1166:
583:
164:
377:. The set of specifications for IP Datacast (phase1) was approved by the DVB project in October 2005.
964:
881:
636:
288:
888:. This could ultimately put a complete stop to law enforcement attempts to censor material on the
713:
704:
652:
522:
485:
253:
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189:
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355:
685:
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503:
296:
261:
248:
Datacasting (data broadcasting) is the transmission of data over a wide area using
802:
669:
561:
526:
496:
249:
131:
1097:"ATSC Datacasting Paves Way for Flexibility of ATSC 3.0 in Distance Education"
695:
More recently a near-Australia wide broadcast of a datacasting channel called
606:
538:
443:
413:
347:
343:
331:
557:
492:
466:
447:
308:
268:
1050:
780:
was used extensively on analogue channels; a type of datacasting using the
639:
undertook a three-year trial in Sydney of a datacasting service using the
463:
822:
781:
777:
614:
598:
553:
351:
304:
889:
834:
806:
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The trial consisted of a number of services on one standard 7 MHz
264:
1118:
699:
commenced on April 13, 2007. Broadcasting as part of the multiplex on
934:
869:
811:
786:
766:
754:
this way includes video content, print-based content (in the form of
696:
663:
A combined program guide for the free-to-air broadcasters (Channel 4)
602:
573:
1119:"Satellite Internet Costs – transponder and VSAT equipment prices"
924:
846:
826:
640:
621:. This is also transmitted on PBS stations via National Datacast.
428:
362:
272:
580:
489:
481:
478:
432:
339:
323:
300:
284:
358:, defining a few basics but also allowing for later expansion.
755:
507:
319:
125:
70:
29:
395:
Ambient
Information Network, a datacasting network owned by
283:
Datacasting often provides a variety of information such as
758:
files), and interactive computer-based multimedia content.
260:(DTT) signals. However, datacasting can also be applied to
252:. It typically refers to supplemental information sent by
427:, it can also be used for datacasting purposes including
765:
The model also includes a distributed deployment of the
529:-supported datacast sent by one local station in each
1016:"DAB Eureka-147: A European vision for digital radio"
849:
enabled devices would communicate with the satellite
156:. Unsourced material may be challenged and removed.
568:-based). From a technical standpoint, it is an IP-
991:"Public TV Advances Public Safety Communications"
853:, which receive data broadcasts from satellites.
1140:"Innovations in Distance Education: Datacasting"
666:ABC news, sport, and weather items (Channel 41)
945:MPEG Unidirectional Lightweight Encapsulation
833:(UDP) through both small satellites, such as
8:
635:Australian broadcast infrastructure company
365:for the technical elements required to send
326:standards support broadband datacasting via
64:Learn how and when to remove these messages
533:. It supplements or replaces the limited
361:The term IP Datacasting (IPDC) is used in
1030:"Blockstream: Satellite Network Coverage"
727:Malaysian multi-channel pay-TV operator,
236:Learn how and when to remove this message
216:Learn how and when to remove this message
114:Learn how and when to remove this message
541:, which is already mandated by the U.S.
354:standards both allow for datacasting on
956:
839:geostationary communications satellites
691:Federal parliamentary audio broadcasts.
857:Advantages over Internet transmission
381:Datacasting services around the world
27:Broadcasting of data over a wide area
7:
601:is a service used by some brands of
154:adding citations to reliable sources
880:In extreme cases a receiver can be
829:. The project uses datacasting and
412:, RBDS is carried on a 57 kHz
408:A slight variation of the European
965:"Satellite Data Casting Solutions"
86:tone or style may not reflect the
25:
543:Federal Communications Commission
423:. While originally intended for
45:This article has multiple issues.
940:MPEG Multiprotocol encapsulation
837:, and larger, more conventional
643:system for use in Australia.
506:. This was distributed through
130:
96:guide to writing better articles
75:
34:
631:Digital television in Australia
141:needs additional citations for
53:or discuss these issues on the
1072:"ATSC 3.0 Interactive Content"
1051:"Blockstream: Satellite Queue"
814:receiver card or USB adapter.
762:what content has been viewed.
688:Home Shopping (Channel 49) and
346:used for analog FM radio. The
328:Digital Terrestrial Television
258:digital terrestrial television
1:
18:Internet Protocol Datacasting
680:Australian Christian Channel
391:Ambient Information Network
1198:
989:Cait (29 September 2015).
628:
805:Satellite broadcasts the
659:The collection included:
564:(although it can also be
930:Multimedia home platform
729:MiTV Corporation Sdn Bhd
650:, collectively known as
619:over-the-air programming
535:electronic program guide
499:stored the movies to be
995:Protect My Public Media
882:physically disconnected
843:satellite constellation
425:program-associated data
1182:Interactive television
920:Interactive television
831:User Datagram Protocol
588:terrestrial television
342:are medium and narrow
1172:Broadcast engineering
798:Blockstream Satellite
584:MPEG transport stream
969:BusinessCom Networks
484:movies in the lower
150:improve this article
637:Broadcast Australia
309:educational content
289:weather forecasting
254:television stations
714:Southern Cross Ten
705:Southern Cross Ten
653:Digital Forty Four
523:TV Guide On Screen
518:TV Guide On Screen
486:vestigial sideband
870:suitable receiver
863:mass surveillance
512:National Datacast
410:Radio Data System
293:traffic reporting
246:
245:
238:
226:
225:
218:
200:
124:
123:
116:
90:used on Knowledge
88:encyclopedic tone
68:
16:(Redirected from
1189:
1177:Radio technology
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579:, alongside the
501:viewed on demand
452:error correction
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126:
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1099:. February 2021
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751:Mindset Network
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577:streaming video
556:is yet another
551:
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397:Ambient Devices
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710:Southern Cross
701:Southern Cross
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537:sent by each
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386:North America
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356:digital radio
353:
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170:
167: –
166:
165:"Datacasting"
162:
161:Find sources:
155:
151:
145:
144:
139:This article
137:
133:
128:
127:
118:
115:
107:
104:November 2021
97:
91:
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73:
72:
67:
65:
58:
57:
52:
51:
46:
41:
32:
31:
19:
1167:Broadcasting
1143:. Retrieved
1134:
1122:. Retrieved
1113:
1101:. Retrieved
1091:
1079:. Retrieved
1066:
1054:. Retrieved
1045:
1033:. Retrieved
1024:
1010:
998:. Retrieved
994:
984:
972:. Retrieved
968:
959:
908:
899:
879:
867:
860:
821:
801:
789:UK profile.
776:
764:
760:
749:
746:South Africa
738:
726:
718:
694:
682:(Channel 46)
658:
651:
645:
634:
597:
572:datacast of
570:encapsulated
566:subscription
552:
531:media market
521:
477:to transmit
461:
442:
407:
394:
360:
313:
297:stock market
282:
275:broadcasts.
262:digital data
247:
232:
227:
212:
203:
193:
186:
179:
172:
160:
148:Please help
143:verification
140:
110:
101:
85:
61:
54:
48:
47:Please help
44:
803:Blockstream
735:Middle East
670:Channel NSW
607:ATSC tuners
562:free-to-air
527:advertising
497:set-top box
446:, owned by
344:subcarriers
267:carried on
250:radio waves
1161:Categories
951:References
905:Efficiency
896:Censorship
629:See also:
605:and other
539:TV station
444:DirectBand
439:DirectBand
414:subcarrier
348:EUREKA 147
332:DirectBand
256:alongside
176:newspapers
50:improve it
845:network.
827:the world
793:Worldwide
716:station.
648:multiplex
625:Australia
586:used for
558:mobile TV
504:for a fee
493:analog TV
467:MovieBeam
458:MovieBeam
448:Microsoft
269:analog TV
206:July 2017
56:talk page
914:See also
851:hotspots
835:CubeSats
823:Outernet
818:Outernet
782:overscan
778:Teletext
723:Malaysia
615:firmware
599:UpdateTV
594:UpdateTV
554:ATSC-M/H
549:ATSC-M/H
462:The now-
352:HD Radio
305:shopping
279:Overview
1145:30 July
1124:31 July
1103:31 July
1081:31 July
1056:30 July
1035:30 July
1000:13 July
974:13 July
890:darknet
876:Privacy
807:Bitcoin
740:Toosheh
603:TV sets
545:(FCC).
475:Dotcast
464:defunct
265:signals
190:scholar
1077:. ATSC
935:UDcast
812:DVB-S2
787:MHEG-5
767:Moodle
697:MyTalk
613:their
611:update
574:MPEG-4
525:is an
495:. The
429:paging
322:, and
301:gaming
192:
185:
178:
171:
163:
1075:(PDF)
925:DVB-H
847:Wi-Fi
841:in a
641:DVB-T
471:dNTSC
363:DVB-H
307:, or
273:radio
197:JSTOR
183:books
1147:2021
1126:2021
1105:2021
1083:2021
1058:2021
1037:2021
1002:2024
976:2024
703:and
686:Expo
674:link
617:via
581:ATSC
490:NTSC
482:HDTV
479:720p
433:dGPS
431:and
404:RBDS
375:UMTS
371:GPRS
350:and
340:RBDS
334:and
324:ISDB
316:ATSC
314:The
285:news
169:news
886:Tor
865:.
756:PDF
609:to
510:'s
508:PBS
488:of
416:on
373:or
336:RDS
320:DVB
271:or
152:by
1163::
993:.
967:.
656:.
514:.
435:.
418:FM
367:IP
318:,
303:,
295:,
291:,
287:,
59:.
1149:.
1128:.
1107:.
1085:.
1060:.
1039:.
1018:.
1004:.
978:.
712:/
672:(
338:/
239:)
233:(
219:)
213:(
208:)
204:(
194:·
187:·
180:·
173:·
146:.
117:)
111:(
106:)
102:(
92:.
66:)
62:(
20:)
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