Multiplexed Analogue Components (original) (raw)
Córas tarchuir teilifíse daite ina seoltar na comharthaí códaithe don lonras, an crómanas is an fhuaim, chomh maith leis na sonraí sioncrónaithe, ina sraith, ceann i ndiaidh a chéile le linn gach líne den íomhá teilifíse. Is gá bandaleithead níos mó ná mar is gnáth chuige, ach is fearr géire caighdeán na híomhá.
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| dbo:abstract | Bei den MAC-Verfahren (englisch Multiplexed Analogue Components) handelt es sich um Fernsehnormen, die Anfang der 1980er für das analoge Satellitenfernsehen entwickelt wurden, jedoch auch Zugang in die Kabelfernsehnetze fanden. Ziel war es, einen in der Zukunft ausbaubaren Standard zu entwickeln, der eine bessere Bildqualität als PAL, SECAM oder NTSC bietet, und auch zu einem HDTV-Standard (HD-MAC) weiterentwickelt werden konnte. Ebenso ist das Scrambling (für Bezahlfernsehen) möglich. Die MAC-Verfahren setzen zwar Multiplexverfahren um, die Abkürzung hat jedoch nichts mit der gleichlautenden, ebenfalls mit Multiplexing in Verbindung stehenden Abkürzung MAC für Media Access Control zu tun. (de) Multiplexed Analogue Components (MAC) was an analog television standard where luminance and chrominance components were transmitted separately. This was an evolution from older color TV systems (such as PAL or SECAM) where there was interference between chrominance and luminance. Originally proposed in the 1980s for use on a Europe-wide terrestrial HDTV system, although it was never used terrestrially. However, tests have been done in France with terrestrial transmission but no commercial exploitation. Various systems were developed, collectively known as the "MAC/packet" family. In 1985 these were recommended for satellite and cable broadcasts by the European Broadcasting Union (EBU). C-MAC/packet was intended for Direct Broadcast Satellite (DBS), D-MAC/packet was intended for wide-band cable, and D2-MAC/packet was intended both for DBS and narrow-band cable. (en) Córas tarchuir teilifíse daite ina seoltar na comharthaí códaithe don lonras, an crómanas is an fhuaim, chomh maith leis na sonraí sioncrónaithe, ina sraith, ceann i ndiaidh a chéile le linn gach líne den íomhá teilifíse. Is gá bandaleithead níos mó ná mar is gnáth chuige, ach is fearr géire caighdeán na híomhá. (ga) |
| dbo:thumbnail | wiki-commons:Special:FilePath/PAL_and_D2-MAC_Transmission.png?width=300 |
| dbo:wikiPageExternalLink | http://www.stjarnhimlen.se/tv/tv.html%23MAC https://www.youtube.com/watch%3Fv=ACywc_cZSKY |
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| dcterms:subject | dbc:1982_introductions dbc:High-definition_television dbc:Satellite_television dbc:Television_technology dbc:Audiovisual_introductions_in_1982 dbc:Television_transmission_standards dbc:British_inventions |
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| rdfs:comment | Córas tarchuir teilifíse daite ina seoltar na comharthaí códaithe don lonras, an crómanas is an fhuaim, chomh maith leis na sonraí sioncrónaithe, ina sraith, ceann i ndiaidh a chéile le linn gach líne den íomhá teilifíse. Is gá bandaleithead níos mó ná mar is gnáth chuige, ach is fearr géire caighdeán na híomhá. (ga) Bei den MAC-Verfahren (englisch Multiplexed Analogue Components) handelt es sich um Fernsehnormen, die Anfang der 1980er für das analoge Satellitenfernsehen entwickelt wurden, jedoch auch Zugang in die Kabelfernsehnetze fanden. Ziel war es, einen in der Zukunft ausbaubaren Standard zu entwickeln, der eine bessere Bildqualität als PAL, SECAM oder NTSC bietet, und auch zu einem HDTV-Standard (HD-MAC) weiterentwickelt werden konnte. Ebenso ist das Scrambling (für Bezahlfernsehen) möglich. (de) Multiplexed Analogue Components (MAC) was an analog television standard where luminance and chrominance components were transmitted separately. This was an evolution from older color TV systems (such as PAL or SECAM) where there was interference between chrominance and luminance. Originally proposed in the 1980s for use on a Europe-wide terrestrial HDTV system, although it was never used terrestrially. However, tests have been done in France with terrestrial transmission but no commercial exploitation. (en) |
| rdfs:label | MAC-Verfahren (de) Comhbhaill analógacha ilphléacsacha (ga) Multiplexed Analogue Components (en) |
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