Nigeria DVB-T2
Nws yog ib tug big deal. Loj tshaj koj xav txog tej yam thaum koj xav txog cov uas siv. Rooj plaub no, cia li nyob rau hauv rooj plaub no, Koj tsis tau them kom ntau xim, Cov migration yog txoj kev hloov ntawm analogue TV rau cov terrestrial TV broadcasting, Uas lub teb chaws thoob ntiaj teb yuav tsum tau txais. Ua li cas ho tuaj txog?
In 2006, member countries of the International Telecommunication Union (ITU), in Geneva, Switzerland, signed an agreement to move from analogue to digital broadcasting by June 2015, the deadline for Digital Switch Over (DSO). Nigeria, for a variety of reasons, did not meet the deadline and has set another one for June 2017.Cov migration entails transmission ntawm cov TV signals hla lub ntiaj teb los masts mus tsev receivers. Thaum twg tshwm sim tau tus kab mob DSO no tshwm sim, Ib TV viewer yuav tau muaj ib lub thawv txheej saum toj kawg nkaus (STB) los yog siv cov TV thiaj li yuav tau txais kev pab TV. Lub thawv Set-Top box yog dab tsi feem ntau hu ua ib decoder. Yog kis tau ib lub thawv saum toj kawg nkaus uas yog compatible nrog DVB-T2, Ob tiam broadcast tshuab (analogue siv lub DVB-T los yog T-1 ntau yam), los yog tsis muaj hli subscription los yog los ntawm ib lub TV teev, Lub TV viewer yuav tau txais lub teeb liab thaum lub DSO yuav siv sij hawm qhov chaw, tom qab lub analogue hloov tawm. Qhov no implies tias ib viewer yuav tsis tau saib analogue TV yog hais tias nws twb tsis tau migrated. Yog hais tias koj xav tau menyuam TV thaum DSO yuav siv sij hawm qhov chaw, Koj yuav tau yuav ib tug dawb-rau-cua STB/decoder (Ib-time purchase thiab tsis muaj hli subscription), Ib Integrated DIGITAL TV teev los yog them TV STB/decoder (Qhov no los nrog ib lub hlis subscription). DVB (Cov yees duab Broadcasting) Yog tus txheem rau cov TV uas tau raug txais nyob rau hauv lub teb chaws nyob hauv THAJ av ntawd ITU thaj av ntawd 1, Teb chaws Africa ntog. DVB-T, Uas stands rau cov yees duab Broadcasting Terrestrial, Yog thawj DVB txheem uas yog tau hloov los ntawm DVB-T2. DVB-T2 stands rau cov yees duab Broadcasting (Ob tiam Terrestrial), Lub kaw lus tshiab uas muab cov kev pab cuam zoo tshaj plaws thiab cov efficiency ntau tshaj efficiency. DVB-T2 yuav tsis backwards compatible nrog DVB-T. xws li, DVB-T receivers tsis tau txais DVB-T2 teeb liab, thiab tej nuj nqis yuav DVB-T2 tau txais DVB-T signals. Qhov no txhais tau tias pej xeem ntawm lub teb chaws uas migration hais tias nws tau tiav los ntawm lub rau hli ntuj 2015 sijhawm sijhawm, Tab sis rau T-1 tshuab yuav tau yuav DVB-T2 receivers uas txhawb cov DVB-T2 txheem. De ib cov broadcast teeb liab, Ib tug yuav tsum muaj ib cov TV. Cov TV yog ib TV uas muaj ib tug inbuilt cov tuner. Tiam sis yog ib tug tseem muaj analogue TV, Ib tug yuav tau txais ib cov receiver nyob rau hauv daim ntawv ntawm ib lub thawv txheej saum toj kawg nkaus, Uas converts lub teeb liab los ntawm ib cov TV broadcast rau hauv ib daim ntawv uas yuav tau saib rau cov tsoos analogue TV teev. Qhov no txhais hais tias peb tam sim no yuav tsum tau them saib cov channels peb twb tau txais dawb hauv terrestrial broadcasting? Muaj ob hom broadcasting pob khoom rau lub platform terrestrial platform: i.e. Dawb-rau-cua thiab them TV. Cov dawb-rau-cua channels yog cov uas koj tau txais tsis muaj subscribe los yog them tus nqi tes rau cov nqi tes uas tau txais. Cov channels no yuav tau dawb txawm tias tom qab lub migration ntawm analogue rau cov broadcasting. Them TV yuav tsum tau koj subscribe thiab them ib subscription nqi tes saib cov channels xws li DStv los yog GOtv. Nyob rau hauv analogue broadcasting, Lub teeb liab yog kis raws li ib tug continuous yoj, Thaum cov transmission entails transmission ntawm lub teeb liab ua ib discrete yoj. Rau cov TV, Lub teeb liab yog encoded thiab yuav tau compressed pub rau ntau channels yuav tsum tshaj tawm hauv xov. Cov migration muaj ntau yam dividends dua analogue. Rau ib tug, Nws xyuas kom zoo visual zoo thiab muaj kev pab ntau dua xws li xov tooj cua, Teletext, kev sib tham sib tham sib tham, ua si, thiab txhawb rau qhov visually impaired thiab hauv internet. tsis tas li ntawd, Nws pub infrastructure-sib koom los siv lub teeb liab distributor masts thiab affords ntau dua txuj rau ntau lub zos ntau lawm, Uas yuav yield ntau txoj hauj lwm rau cov ntsiab lus creators. Li ntawd, txoj kev ntawd, Nws contributes nyob rau hauv tsis muaj kev ntsuas me me rau lub economic zoo yog migrating lub teb chaws. Qhov chaw los ntawm qhov chaw:http://allafrica.com/stories/201508032065.html VCAN Yuav muaj Romania DVB-T2 khoom hauv qab no: