Kusankha TV nokha, wokondedwa wanu, kuchokera ku sayansi, osati kutsatsa

Moni nonse.

Ndinalimbikitsidwa kulemba nkhaniyi mwachidule ndi mkangano wokhudza kusankha TV.

Tsopano m'dera lino - komanso mu "megapixels makamera" - pali bacchanalia yotsatsa pofunafuna zisankho: HD Ready yasinthidwa kale ndi Full HD, ndipo 4K komanso 8K yayamba kale kutchuka.

Tiye tifufuze - tikusowa chiyani kwenikweni?

Maphunziro a geometry kusukulu ndi chidziwitso china kuchokera ku Wikipedia zitithandiza pa izi.

Chifukwa chake izi kwambiri Wikipedia, diso lamaliseche la munthu wamba ndi chipangizo chapadera chomwe chimatha kuyang'ana nthawi imodzi pa ngodya ya 130 ° -160 °, komanso kusiyanitsa zinthu pa ngodya ya 1-2′ (pafupifupi 0,02 ° -0,03 °) . Kumeneko Kuyang'ana mwachangu kumachitika pamtunda wa 10 cm (achinyamata) - 50 cm (anthu ambiri azaka 50 kapena kuposerapo) mpaka osakwanira..

Zikuwoneka bwino. Ndipotu, si zophweka.

Pansipa pali gawo la diso lakumanja la munthu (khadi yozungulira, manambala pamlingo ndi madigiri a angular).

Malo a lalanje ndi malo owonetsera fundus akhungu. Munda wa masomphenya a diso alibe mawonekedwe a bwalo lokhazikika, chifukwa cha kuchepa kwa kuyang'ana ndi mphuno kumbali yapakati ndi zikope pamwamba ndi pansi.

Ngati tiwonetsa chithunzi cha diso lakumanja ndi lakumanzere, timapeza motere:


Tsoka ilo, diso la munthu silimapereka mawonekedwe ofanana a masomphenya kudutsa ndege yonse pamtunda waukulu. Inde, ndi maso awiri timatha kuzindikira zinthu zomwe zili mkati mwa 180 ° patsogolo pathu, koma tikhoza kuzizindikira ngati zitatu-dimensional mkati mwa 110 ° (mpaka kumadera obiriwira), komanso ngati mitundu yonse - mumgwirizano wofanana. zocheperako pafupifupi 60 ° -70 ° (kudera la buluu). Inde, mbalame zina zimakhala ndi malo owoneka pafupifupi 360 °, koma tili ndi zomwe tili nazo.

Kotero ife timapeza izo munthu amalandira chithunzi chapamwamba kwambiri pakona yowonera pafupifupi 60 ° -70 °. Ngati kuphimba kwakukulu kukufunika, timakakamizika "kuthamangitsa" maso athu pachithunzichi.

Tsopano - za ma TV. Mwachikhazikitso, ganizirani ma TV omwe ali ndi chiyerekezo chodziwika bwino cha m'lifupi ndi msinkhu monga 16: 9, komanso chophimba chophwanyika.

Ndiye kuti, zikuwoneka kuti W: L = 16: 9, ndipo D ndiye chophimba.

Chifukwa chake, kukumbukira Lamulo la Pythagorean:


Choncho, kuganiza kuti chigamulo ndi:

• Mapikiselo a HD Ready 1280x720
• Full HD ili ndi mapikiselo a 1920x1080
• Ultra HD 4K ili ndi mapikiselo a 3840x2160,

timapeza kuti mbali ya pixel ndi:

• HD Yokonzeka: D/720,88
• Full HD: D/2202,91
• Ultra HD 4K: D/4405,81

Kuwerengera kwazinthu izi zitha kupezeka apa

Tsopano tiyeni tiwerengere mtunda wokwanira wowonekera pazenera kuti diso litseke chithunzi chonse.

Kuchokera pazithunzi zikuwonekeratu kuti


Popeza gawo lalikulu kwambiri la kutalika ndi m'lifupi mwa chithunzicho ndi m'lifupi - ndipo diso liyenera kuphimba m'lifupi lonse la chinsalu - tiyeni tiwerenge mtunda wokwanira wowonekera pazenera, poganizira kuti, monga momwe tawonetsera pamwambapa, mbali yowonera. sayenera kupitirira madigiri 70:

Ndiko kuti: Kuti diso litseke m'lifupi lonse la chinsalu, tiyenera kukhala patali osayandikira pafupifupi theka la diagonal ya chinsalu.. Komanso, mtunda uwu uyenera kukhala osachepera 50 cm kuti uwonetsetse kuyang'ana bwino kwa anthu azaka zilizonse. Tiyeni tikumbukire izi.

Tsopano tiyeni tiwerengere mtunda womwe munthu angasiyanitse ma pixel pazenera. Uwu ndi makona atatu omwewo ndi tangent ya ngodya, R yokha pankhaniyi ndi kukula kwa pixel:

Ndiko kuti: patali kwambiri kuposa kukula kwa pixel 2873,6, diso silidzawona njere. Izi zikutanthauza, poganizira kuwerengera mbali ya pixel pamwambapa, muyenera kukhala pamtunda wocheperako kuchokera pazenera kuti chithunzicho chikhale chachilendo:

• HD Ready: D/720,88 x 2873,6 = 4D, ndiye kuti, ma diagonal anayi
• Full HD: D/2202,91 x 2873,6 = 1,3D, ndiye kuti, pafupifupi ma diagonal ocheperako ndi theka
• Ultra HD 4K: D/4405,81 x 2873,6 = 0,65D, ndiko kuti, kupitirira pang'ono theka la chinsalu chozungulira

Ndipo tsopano zomwe zidatsogolera -

Zotsatira:

1. Simuyenera kukhala pafupi ndi 50 cm pazenera - diso silingathe kuyang'ana chithunzicho nthawi zonse.
2. Simuyenera kukhala pafupi ndi ma diagonal a 0,63 - maso anu adzatopa chifukwa amayenera kuthamanga kuzungulira chithunzicho.
3. Ngati mukufuna kuwonera TV patali kwambiri kuposa ma diagonal anayi, simuyenera kugula china chozizira kuposa HD Ready - simudzazindikira kusiyana kwake.
4. Ngati mukufuna kuwonera TV patali kwambiri kuposa ma diagonal a skrini imodzi ndi theka, simuyenera kugula china chozizira kuposa Full HD - simudzazindikira kusiyana kwake.
5. Kugwiritsa ntchito 4K ndikoyenera kokha ngati muyang'ana pazenera pamtunda wosakwana theka la diagonal, koma kuposa theka la diagonal. Mwina awa ndi mtundu wina wa oyang'anira masewera apakompyuta kapena mapanelo akuluakulu, kapena mpando womwe ukuima pafupi ndi TV.
6. Kugwiritsa ntchito chigamulo chapamwamba sikumveka - simungawone kusiyana ndi 4K, kapena mudzakhala pafupi kwambiri ndi chinsalu ndipo mbali yowonera sidzaphimba ndege yonse (onani mfundo 2 pamwambapa). Vutoli litha kuthetsedwa pang'ono ndi chophimba chokhotakhota - koma kuwerengera (kovuta kwambiri) kukuwonetsa kuti kupindulaku ndikokayikitsa kwambiri.

Tsopano ndikupangira kuyeza chipinda chanu, malo a sofa yomwe mumakonda, mawonekedwe a TV ndi kuganiza: kodi ndizomveka kulipira zambiri?

Source: www.habr.com