Nyitsɔ laa la, kuxi si nye be woatia mɔ̃ si xɔa dɔwɔɖoɖo siwo woɖona ɖe amewo le dijitaal mɔnu dzi la va sɔ wu.
Le gbeƒãɖeɖe sia me la, wotsɔa analog TV ƒe dzesi gbãtɔa dea mɔ̃ dzi, ƒoanɛ ɖe enu, eye woblanɛ ɖe ʋuɖoɖo ƒe tɔsisi aɖe me hena eɖoɖo. Le tɔsisi ɖeka me la, woate ŋu aɖo TV-dɔwɔƒe ɖeka alo televisiondɔwɔƒe geɖe ƒe akpa aɖe ɖe amewo. Woyɔa tɔsisi siwo nye ƒomevi gbãtɔ be SCPC*1, eye woyɔa esiwo le ƒomevi evelia be MCPC*. Le akpa si xɔa nyatakakawo la, woɖea dijitaal tɔsisia gɔme eye wogbugbɔa TV ƒe dzesi ƒe analog nɔnɔme la ɖoa anyi.
Packet transmission of channels ƒe vava trɔ woƒe didi ƒe ɖoɖowɔwɔ to receiver dzi. Analog satellite channel la xɔa transponder bliboa ɣesiaɣi. Eyata woate ŋu atsɔ carrier parameters ade mɔ̃a ƒe ŋkɔ me ɖikekemanɔmee. Le dijitaal nyatakakawo ɖoɖoɖa me la, woate ŋu aɖo mɔ̃ siwo ade ewo geɖe ɖe amewo le agbalẽvi ɖeka me. Wo kpɔkpɔ to amesi xɔa wo dzi dzɔna le afɔɖeɖe eve me. Gbã la, wodzraa carrier digital transponders ƒe parameters ɖo ɖe ŋkuɖodzinu me - SR *, FEC *, frequency kple polarization. Abe se ene la, wodzraa satellite aɖewo ƒe carrier digital transponders ƒe parameters ɖo ɖe memory me xoxo le dɔwɔƒea. Ne mɔ̃a fia asi satelait ma tɔgbe la, edzea agbagba ɖe wo nɔewo yome be yeaɖe agbalẽviwo kple tɔsisi ɖekaɖekawo gɔme. Esia wɔnɛ be wowɔa mɔ̃ siwo wokpɔ ƒe xexlẽdzesi vovovowo le ŋkuɖodzinu me.
Nu yeye geɖe le dijitaal-xɔla siwo ŋu wòle be woalé ŋku ɖo. Wo dometɔ aɖewo do ƒome kple digital stream ƒe parameters. Nɔnɔme vevitɔwo dometɔ ɖekae nye duƒuƒu ƒe didime si dzi amesi xɔe lɔ̃ ɖo. Digitál television dzi satelait ƒe nyatakakawo kaka ƒe agbɔsɔsɔme tso 1.2 Msymbol/s va ɖo 30.5 Msymbol/s.
Zi geɖe la, kuxiwo nɔa tɔsisi siwo mezɔna kabakaba o ŋu. Wonye esiwo bɔ vevietɔ le mɔ̃ siwo xɔa nyatakaka siwo ŋu wotrɔ asi le be woaxɔ agbalẽvi aɖe koŋ ŋu. Seɖoƒe si le anyime na duƒuƒu siwo dzi woda asi ɖoe nye, abe se ene la, 18-22 Msymbol/s. Xɔla mawo meɖea mɔ be woaxɔ mɔ̃ ɖeka alo agbalẽvi siwo zɔna kabakaba o. Xɔla akpa gãtɔ siwo ƒe mɔfiame le kpuie o
tion, seɖoƒe si le ete la nye 2-5 Msymbols / s, eye ʋee aɖewo koe si 1 Msymbols / s. Eyata hafi nàƒle receiver la, ele be nànya deme ƒe tɔsisiawo ƒe asitɔtrɔ ƒe agbɔsɔsɔmewo godoo.
Nu bubu si do ƒome kple bitstream parameters enye ŋutete si le ame si be wòatsɔ asi aŋlɔ PID* la me. Enaa nètrɔa ɖoɖowɔɖia ƒe odiogbe ya, ne odio geɖe le mɔ̃a dzi. Esia nye nyateƒe na receiver mawo siwo me gbegbɔgblɔ ɖɔliɖɔli ƒe dɔwɔwɔ mele menu la me o. Tsɔ kpe ɖe eŋu la, mɔnu siwo mebɔ o li siwo zãa gɔmedze tɔsisi ƒe adrɛs siwo menye ɖoɖowɔɖi o siwo womate ŋu axɔ kura ne wometsɔ asi de PID la me o.
Digitál-mɔ̃a, si lolo wu analog-mɔ̃a, naa mɔnukpɔkpɔ siwo sɔ be woatsɔ nyatakaka vovovo siwo do ƒome kplii, siwo dome subɔsubɔdɔ hã le, aɖo ɖa. Dɔdzikpɔlawo zãa nɔnɔme siawo geɖe tsɔ tsɔa teletext*, kple elektrɔnik mɔfiame* ƒe axawo yina teƒe bubuwo. Taflatse de dzesii be dijitaal-xɔla siwo si teletext ƒe kpekpeɖeŋu le ate ŋu azã tiatia eve hena eƒe dɔwɔwɔ. Le go gbãtɔ me la, woɖea teletext gɔme, wodzraa wo ɖo ɖe receiver ƒe ŋkuɖodzinu me eye woate ŋu aɖoe ɖa abe television ƒe dzesi si sɔ ene. Wotiaa teletext mode ne wozi abɔta tɔxɛ aɖe dzi le receiver la ƒe adzɔgedzikpɔmɔ̃ dzi. Mɔnu sia sɔ kple esi wozãna le D/D2 MAC decoders me. Mehiã be woatsɔ teletext decoder aɖo TV la dzi o eye wolɔ̃a esia wu ne ame ŋutɔ axɔe. Mɔnu evelia ku ɖe teletext gbugbɔgaɖoanyi le vertical quenching pulse (CHI) ƒe dometsotso me, si me wònɔ le analog signal gbãtɔa me. Le go sia me la, ele be woagbugbɔ teletext la gɔme to TV la ƒe decoder si wotu ɖe eme dzi. Xɔla siwo gbugbɔa teletext le THD dometsotsoa me la zazã le bɔbɔe na amewo xɔxɔ le ƒuƒoƒo me, elabena woɖea mɔ na nudɔla siwo do ƒome kplii la dometɔ ɖesiaɖe be wòatrɔ ɖe teletext ƒe nɔnɔme ŋu le eɖokui si.
Nusiwo le etɔxɛ na dijitaal-mɔ̃ siwo xɔa nyatakakawo dometɔ aɖewoe nye ŋutete si le wo si be woadi mɔ̃wo le wo ɖokui si tso nyatakakadzraɖoƒe ŋuti nyatakaka siwo woɖona ɖe dijitaal tɔsisi la me*. Wole mɔ kpɔm be kɔmpiutadziɖoɖowo le etsɔ si gbɔna kpuie me ana amesiwo xɔa nyatakakawo nate ŋu adze didi gɔme nyatakaka aɖeke manɔmee. Gake vaseɖe fifia (le September ƒe gɔmedzedze) la, míenya kpɔɖeŋu aɖeke si si ŋutete mawo le o.
Digitál nyadzɔdzɔwo kaka ƒe vava na be television dɔwɔƒe siwo woɖona ɖe amewo ƒe xexlẽme dzi ɖe edzi ŋutɔ. Wobua nɔnɔme sia ŋu ne wole dijitaal mɔ̃ siwo xɔa nyatakakawo wɔm. Ŋkuɖodzinu agbɔsɔsɔme si woɖo ɖe wo me na television dɔwɔƒewo ƒe xexlẽdzesiwo, le go geɖe me la, ɖea mɔ na wò be nàdzra TV 1000-3000 kple radiodɔwɔƒe siwo ade 500-1500 ɖo. Woɖe ŋkuɖodzinu si seɖoƒe li na ƒe kuxia, si le analog-mɔ̃ aɖewo me la ɖa kloe le afisia.
Mɔ̃ gbogbo aɖewo kple subɔsubɔdɔ gbogbo aɖewo, si nye dijitaal nyatakakawo ɖoɖoɖa ƒe dzesi, na be nuɖuɖuwo ƒe ɖoɖoa sesẽ. Eyata nuxɔla la bia be wòawɔ ɖoɖo ɖe nuɖuɖua ŋu wòasɔ eye wòasɔ eye ŋutete nanɔ esi be wòaɖo mɔ̃wo ɖe ɖoɖo nu le mɔ si sɔ nu.
Esesẽ boŋ be woatsɔ nyagbe ʋɛ aɖewo agblɔ nudidi sia ŋutɔŋutɔ. Nuɖuɖuawo ƒe ɖoɖo nyo ɖe edzi tso tɔtrɔ ɖeka dzi yi bubu dzi, eye egbea la, adzɔnuwɔƒe vevi akpa gãtɔ naa tiatia siwo sɔ kple wo nɔewo, siwo woto vɛ le esi nyo wu dim.
Ele be wòanɔ bɔbɔe be woawɔ asitɔtrɔ le receiver la ŋu. Zi geɖe la, wotsɔa kɔmpiutadziɖoɖoa ƒe tɔtrɔ yeye aɖe tso kɔmpiutaa dzi, eyata ele be ʋɔtru aɖe nanɔ amesi xɔa kɔmpiutaa ŋu si dzi wòate ŋu atsɔe aƒo ƒui. Abe se ene la, esia nye RS-232.
Tiatia bubuwo hã li siwo dzi nàto azã PC la. Zi geɖe la, kɔmpiuta dzi nuŋlɔlawo zazã ate ŋu ana transponder kple channel ƒe xexlẽdzesiwo ɖɔɖɔɖo nanɔ bɔbɔe ŋutɔ. Eye le mɔ̃ aɖewo siwo xɔa nyatakakawo gome la, wowɔ ɖoɖo siwo woatsɔ ade dzesi kɔmpiuta dzi dɔmawɔmawɔ nyuie.
Ne wole xɔxlɔ̃ ƒe ɖoɖo wɔm tso ɣletinyigba ƒe teƒe geɖe la, ate ŋu ahiã be xɔla la nado alɔ DiSEqC ƒe ɖoɖowɔɖia. Le ɖoɖo si me antenna eve alo esi wu nenema le me la, ate ŋu akpɔ DiSEqC ƒe ʋuƒo siwo va bɔ nyitsɔ laa dzi. Ne woda rotary antenna ɖe ɖoɖoa me la, ekema asɔ be woazã egbegbe DiSEqC positioner. Wozãa DiSEqC ƒe tɔtrɔwo zi geɖe ne wole ɖoɖo wɔm ɖe amehawo ƒe xɔxlɔ̃ ƒe ɖoɖowo ŋu kple satelait ƒe dzesi ƒe mama le domedome ɣeyiɣi.
DiSEqC ƒe ɖoɖowɔɖia nye esi dijitaal mɔ̃wo katã kloe doa alɔe. Ke hã, ele be nàlé ŋku ɖe DiSEqC sedede siwo le xɔla kple gotagome mɔ̃wo ŋu ƒe ɖekawɔwɔ ŋu. Zi geɖe la, wogblɔa DiSEqC ɖoɖowɔɖi si wodo alɔe ƒe ƒomevi le wo ɖokui si boŋ. Eyata ehiã be woakpɔ egbɔ be sedede ƒe ƒuƒoƒoa sɔ. Zi geɖe la, gotagome mɔ̃wo naa tiatiawɔwɔ le hatsotso mawo tɔgbe geɖe dome eye àte ŋu atia ɖeka si sɔ kple amesi xɔe ƒe sededewo. Wozãa dziɖuɖu ƒe dzesi siwo nye 13/18V, 22 kHz hã geɖe. Esi wònye be wohiã be woatsɔ akpɔ xexeame katã ƒe tɔtrɔɖenuŋuwo dzi ta la, amesiwo katã xɔa woe wɔ wo to vovo aɖeke manɔmee. Le switch kple commutator aɖewo gome la, woate ŋu azã wo abe DiSEqC teƒe ene.
Le dijitaal tɔsisiwo ƒe nɔnɔme tɔxɛwo ta la, analog-xɔlawo ƒe nɔnɔme vevi aɖewo na dijitaal-xɔlawo mehiã o. Esia ku ɖe bandwidth kple toɣliɖeɖe dzi ɖeɖe kpɔtɔ ƒe dzidzenu koŋ ŋu. Digitál dzesi ƒe IF ƒe didime nɔ te ɖe bit ƒe tsɔtsɔme dzi tẽ eye ate ŋu ato vovo le teƒe geɖe ŋutɔ. Eyata le dijitaal-xɔlawo me la, wotrɔa asi le mɔ̃a ƒe kekeme ŋu le eɖokui si le dijitaal tɔsisi si woxɔ ƒe IF ƒe didime nu. Tsɔ kpe ɖe eŋu la, menye TV ƒe dzesi ŋutɔe nye dijitaal tɔsisi o, ke boŋ dzesi sia ƒe kɔpi si wotsɔ toɣliɖeɖe ƒe dɔlélenutsiŋutete ƒe nuŋɔŋlɔwo ƒo ɖe enu hekpɔ eta. Le toɣliɖeɖe dzi ɖeɖe kpɔtɔ ƒe ɖoɖo si wowɔna le analog xɔxɔ me hena detuning tso interference me gome la, eva ɖiɖina ɖe dzesi si woxɔ ƒe IF band ƒe goawo ɖeɖe dzi. Le ɣeyiɣi ma ke me la, le nyatakaka aɖewo siwo bu tso amadede suesuesuewo ŋu ta la, woate ŋu adzi dzesi si ŋu viɖe le ƒe sesẽme kple toɣliɖeɖe ƒe sɔsɔme ɖe edzi. Asixɔxɔ si le xexlẽme sia ŋue nye nyametsotso vevitɔ na alesi wòanya wɔ be woaxɔ dzesia. Digitál dzesi ƒe ɣeyiɣi ƒe didime le bɔbɔe wu analog signal, eyata ne wotso eƒe goawo la, mana dzesi kple toɣliɖeɖe ƒe sɔsɔme nadzi ɖe edzi ŋutɔ o. Tsɔ kpe ɖe eŋu la, menye TV ƒe dzesi ŋutɔe woɖona ɖe amewo le dijitaal-mɔ̃a me o, ke boŋ eƒe kɔpi, kple kaƒomɔ̃a ƒe gowo ɖeɖeɖa ate ŋu ana nyatakakaawo ƒe akpa vevi aɖe ŋutɔ nabu. Le susu siawo ta la, womezãa toɣliɖeɖe dzi ɖeɖe kpɔtɔ le dijitaal xɔxɔ me o.
Ele be míagblɔ be le dijitaal TV ƒe dzesi gome la, womeɖea nɔnɔmetata si wogbugbɔ wɔ ƒe nyonyome dzi kpɔtɔna o. Ne woate ŋu aɖe tɔtɔ siwo woxɔna le gbeƒãɖeɖe me ɖa le ametakpɔnu ƒe nuŋɔŋlɔwo ƒe gbugbɔgaɖoanyi ƒe nɔnɔmewo ta la, ekema TV ƒe dzesi la gaɖoa eƒe nɔnɔme gbãtɔ me kloe. Nutoa me siwo naa analog signal si le receiver la me kple television receiver la ƒe nyonyomee kpɔa nɔnɔmetata ƒe nyonyome. Ne ametakpɔnu ƒe kɔpi ƒe goglome mesɔ gbɔ o la, ekema womegagbugbɔa dzesia ɖona kura o. Le liƒo ƒe nɔnɔme me la, nuwo ƒe wɔwɔ ɖekae ƒe ɖiɖi le tsia dzi dzɔna, nɔnɔmetata la tɔa te, alo nɔnɔmetata la gbãna wòzua kubi vovovowo. Mɔnu sia tɔgbe mesɔ kura o. Liƒo ɖaɖɛ aɖe ƒe anyinɔnɔ le nɔnɔmetata si ƒe nyonyome deŋgɔ kple eƒe anyimanɔmanɔ keŋkeŋ dome na be womate ŋu atsɔ nukpɔkpɔ akpɔ nudzraɖoƒea "le nyonyome nu o". Eyata wotsɔa dzesi ƒe sesẽme kple eƒe nyonyome ƒe dzesiwo dea dijitaal-xɔla geɖe me. Wosea dzidzenua gɔme be enye dzesia ƒe sesẽme blibo, eye vodada agbɔsɔsɔme si le tɔsisia me hafi woɖea toɣliɖeɖe ɖɔɖɔɖo gɔmee kpɔa eƒe nyonyome.
Be woaxɔ ɖoɖowɔɖi siwo wotu kple encoding aɖe la, ehiã be woawɔ access module (decoder) na encoding sia. Ele be woatsɔ agbalẽvi ɖekaɖeka si me nyatakaka siwo ku ɖe nudɔdɔ ƒe nɔnɔmewo ŋu le la ade module ƒe teƒea kpee. Woateŋu atu mɔɖeɖe ƒe mɔ̃a ɖe xɔla la me alo egodo. Wotsɔa xɔla siwo ƒe susu nɔa agbalẽvi aɖewo siwo woxea fe na xɔxɔ ŋu la dea modules siwo wotu ɖe eme la me. Wometsɔa gotagome decoderwo doa ka to SCART dzi o, abe alesi wòle le analog receivers me ene, ke boŋ to standard interface (O) - PCMCIA dzi.
Vaseɖe fifia la, gotagome modules siwo si CI le li na digital TV signal encoding gãwo katã - Viaccess, Irdeto, Seca / Mediaguard, Cryptoworcs, Conax, Nagravision. Nusi to vovoe nye PowerVu ƒe nuŋɔŋlɔ, si wowɔna kple vovototo aɖewo tso DVB ƒe aɖaŋuɖoɖowo gbɔ. O ƒe teƒe 2 alo 4 gɔ̃ hã le receiver aɖewo ŋu, si wɔnɛ be mètsia dzi ɖe decoder la tɔtrɔ ŋu ne èle tɔtrɔm ɖe ɖoɖowɔɖi siwo dzi encoding bubu xɔna ŋu o. Le etsɔme la, wole mɔ kpɔm be woazã CI slots atsɔ aƒo modules vovovo siwo wɔa dɔ la nu ƒu. Esia ana nàte ŋu atrɔ asi le gɔmeɖoanyia ƒe dɔwɔwɔ kple subɔsubɔ ŋutetewo ŋu le mɔ si sɔ nu.
Zi geɖe la, woƒlea digital receiver tsɔ kpe ɖe analog tɔ ŋu. Ne woxɔa dijitaal kple analog dzesiwo tso antenna ɖeka dzi la, ekema nunya anɔ eme be nàtia dijitaal mɔ̃ si me dzesi si wotsɔ dea eme le to F-connector (loop output *) bubu aɖe dzi, si ŋu woate ŋu atsɔ analog receiver aƒo ƒu ɖo. Ne wogawu ɖoɖoa nu ake la, ekema le dijitaal kple analog ɖoɖowɔɖiwo xɔxɔ ɖekae gome la, esɔ wu be woaƒle dijitaal-to-analog-mɔ̃ si wotsɔ ƒo ƒui.
Eye ne ɖoɖoa zãa antenna si trɔna la, ekema àte ŋu atia digital-to-analog receiver si me positioner le. Nyitsɔ laa la, dɔwɔƒe geɖe dze mɔ̃ siwo xɔa nyatakaka vovovowo wɔwɔ gɔme, siwo dometɔ aɖewoe nye esiwo ƒe mɔ̃ siwo wɔa dɔ vovovowo le. Woateŋu atsɔ analog tuner, CI interfaces, access modules kple positioner akpe ɖe modules ƒe gɔmedzedze ƒe hatsotso si le receiver bɔbɔetɔ me le models siwo sesẽ wu me le combinations vovovowo me. Esia wɔnɛ be nàte ŋu awɔ tiatia nyuitɔ kekeake, eye nèbua nudidi siwo hiã le mɔ̃a kple nusiwo wotsɔ wɔe ƒe ŋutetewo ŋu.
Vevienyenye si le nuxɔla ƒe nɔnɔme aɖewo ŋu nɔ te ɖe dɔ siwo gbɔ wòle be wòakpɔ dzi koŋ. Eyata hafi míayi tiatia la dzi la, ehiã be nàɖe dɔ siawo ƒe didime me nyuie.
Le nyataƒoƒo me la, ele be míagblɔ be nɔnɔme vevi geɖe le amesi xɔa mɔɖegbalẽa ƒe dɔwɔwɔ ŋutɔŋutɔ ŋu siwo medze le eƒe mɔzɔgbalẽa me o. Eyata, na amesiwo lɔ̃a mɔ̃ "surfing", duƒuƒu ƒe tɔtrɔ tso mɔ̃ dzi yi mɔ̃ dzi anye nu vevi aɖe, ne wole mɔ̃ siwo gbɔdzɔ xɔm la, tuner la ƒe seselelãme nyea nyametsotso, eye ne wole mɔ̃a dem rack me la, dzoxɔxɔ si gbɔ eme le nutunua me ate ŋu va zua ɖeklemiɖela.
Eyata woate ŋu akafui na amesiwo di be yewoate ɖe nuxɔla ƒeƒle ŋu vevie be woanya numetoto siwo wowɔ tso mɔ̃ si me wotsɔ ɖe le ƒe dɔ ŋutɔŋutɔ wɔwɔ ŋu gbã. Woate ŋu akpɔ nyatakaka mawo le Internet dzi, kpakple dodokpɔnyati siwo kplɔ wo nɔewo ɖo siwo woda ɖe mɔfiame sia me.
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December 21, 2024 14:19:11 +0200 GMT
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