{"id":5283,"date":"2023-10-01T18:38:43","date_gmt":"2023-10-01T18:38:43","guid":{"rendered":"https:\/\/csiag.eu\/?p=5283"},"modified":"2023-10-13T08:55:47","modified_gmt":"2023-10-13T08:55:47","slug":"zrkadlenie-obrazovky","status":"publish","type":"post","link":"https:\/\/csiag.eu\/sk\/blog\/2023\/10\/01\/screen-mirroring\/","title":{"rendered":"Zrkadlenie obrazovky"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87_1 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Obsah<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/csiag.eu\/sk\/blog\/2023\/10\/01\/screen-mirroring\/#Verbindungsaufbau\" >Nastavenie pripojenia<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/csiag.eu\/sk\/blog\/2023\/10\/01\/screen-mirroring\/#Anwendungsbeispiel\" >Pr\u00edklad aplik\u00e1cie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/csiag.eu\/sk\/blog\/2023\/10\/01\/screen-mirroring\/#Beamer\" >Projektor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/csiag.eu\/sk\/blog\/2023\/10\/01\/screen-mirroring\/#Projektionsflache\" >Projek\u010dn\u00e9 pl\u00e1tno<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u010cas \u010d\u00edtania<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">z\u00e1pisnice<\/span><\/span>\n<p class=\"wp-block-paragraph\">Zrkadlenie obrazovky je met\u00f3da odosielania video a audio obsahu z mobiln\u00e9ho telef\u00f3nu alebo tabletu prostredn\u00edctvom siete WLAN do zariadenia na prehr\u00e1vanie, ako je napr\u00edklad inteligentn\u00fd telev\u00edzor alebo projektor, kde sa m\u00f4\u017ee zrkadli\u0165 alebo prehr\u00e1va\u0165.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e4\u010d\u0161ina inteligentn\u00fdch zariaden\u00ed pon\u00faka pr\u00edslu\u0161n\u00e9 nastavenia ako \u0161tandard.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Verbindungsaufbau\"><\/span>Nastavenie pripojenia<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pripojenie vy\u017eaduje zdie\u013ean\u00fa sie\u0165 Wi-Fi a iniciuje sa z mobiln\u00e9ho telef\u00f3nu alebo tabletu. Po aktiv\u00e1cii zrkadlenia obrazovky a v\u00fdbere pr\u00edslu\u0161n\u00e9ho v\u00fdstupn\u00e9ho zariadenia na mobilnom zariaden\u00ed sa na inteligentnom telev\u00edzore alebo projektore zobraz\u00ed zvy\u010dajne \u0161tvormiestny \u010d\u00edseln\u00fd k\u00f3d, ktor\u00fd sa mus\u00ed zada\u0165 na mobilnom zariaden\u00ed, aby sa vytvorilo pripojenie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hne\u010f po nadviazan\u00ed spojenia sa obsah mobiln\u00e9ho zariadenia vr\u00e1tane zvuku prenesie do prehr\u00e1vacieho zariadenia. Toto funguje pre zariadenia so syst\u00e9mom iOS aj Android.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Obsah obrazovky zo stolov\u00fdch po\u010d\u00edta\u010dov alebo prenosn\u00fdch po\u010d\u00edta\u010dov s opera\u010dn\u00fdm syst\u00e9mom OS X alebo Windows mo\u017eno t\u00fdmto sp\u00f4sobom zobrazova\u0165 a zrkadli\u0165 aj na tak\u00fdchto inteligentn\u00fdch telev\u00edzoroch alebo projektoroch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Anwendungsbeispiel\"><\/span>Pr\u00edklad aplik\u00e1cie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Predpokladajme, \u017ee m\u00e1te videokameru s pripojen\u00edm LAN a HDMI, ktorej zvukov\u00e9 a obrazov\u00e9 sign\u00e1ly sa maj\u00fa prehr\u00e1va\u0165 na ve\u013ekom Smart TV. Kamera a telev\u00edzor s\u00fa umiestnen\u00e9 v r\u00f4znych miestnostiach, pr\u00edpadne aj na r\u00f4znych poschodiach, vzdialen\u00e9 od seba pribli\u017ene 60 metrov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Teraz je mo\u017en\u00e9 pou\u017e\u00edva\u0165 k\u00e1bel HDMI. Pri rozl\u00ed\u0161en\u00ed videa 1080 v\u0161ak dok\u00e1\u017ee prekona\u0165 iba vzdialenos\u0165 10 metrov.<br>Pomocou s\u00fapravy prevodn\u00edka HDMI na sie\u0165 LAN, ktor\u00e1 pozost\u00e1va z vysiela\u010da so vstupom HDMI a v\u00fdstupom LAN, ako aj z prij\u00edma\u010da so vstupom LAN a v\u00fdstupom HDMI, m\u00f4\u017eete prekona\u0165 ve\u013ek\u00e9 vzdialenosti prostredn\u00edctvom k\u00e1bla LAN, dokonca a\u017e 120 metrov, a ak s\u00fa tak\u00e9to s\u00fapravy zoskupen\u00e9, aj viac.<br>Nie je to v\u0161ak \u00faplne ekonomick\u00e9, najm\u00e4 ak je v oboch izb\u00e1ch k dispoz\u00edcii rovnak\u00e9 Wi-Fi. V takom pr\u00edpade je zrkadlenie obrazovky prostredn\u00edctvom zdie\u013eanej siete WLAN dobrou mo\u017enos\u0165ou bez dodato\u010dnej n\u00e1mahy (in\u0161tal\u00e1cie a n\u00e1kladov).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Beamer\"><\/span>Projektor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Rozli\u0161uje sa medzi be\u017en\u00fdmi projektormi a inteligentn\u00fdmi projektormi. Tie druh\u00e9 podporuj\u00fa vy\u0161\u0161ie uveden\u00e9 zrkadlenie obrazovky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u010casto sa vyskytuje chyba v \u0161pecifik\u00e1cii l\u00famenov, teda jasu projektora. Sveteln\u00fd tok a ANSI lumen je potrebn\u00e9 rozli\u0161ova\u0165 pod\u013ea ich v\u00fdznamu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sveteln\u00fd tok sa vz\u0165ahuje na jas zdroja svetla, zatia\u013e \u010do ANSI lumen sa vz\u0165ahuje na jas na projek\u010dnej ploche. ANSI l\u00famen je preto v technol\u00f3gii projektorov rozhoduj\u00faci.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdber projektora z\u00e1vis\u00ed od sveteln\u00fdch podmienok, ve\u013ekosti miestnosti a vzdialenosti od projek\u010dnej plochy. Projektor so zlou osvet\u013eovacou technikou nebude schopn\u00fd poskytn\u00fa\u0165 hodnotn\u00fd obraz v miestnosti, ktor\u00e1 je zaplaven\u00e1 svetlom a ned\u00e1 sa zatemni\u0165. Na druhej strane, vysoko v\u00fdkonn\u00fd projektor v men\u0161ej miestnosti s iba \u00fazkym oknom osvetl\u00ed miestnos\u0165 obrazom jasn\u00fdm ako de\u0148 a tie\u017e neprispeje k pote\u0161eniu div\u00e1ka. K\u013e\u00fa\u010dov\u00fa \u00falohu pri v\u00fdslednom z\u00e1\u017eitku z obrazu zohr\u00e1va aj kontrastn\u00fd pomer projektora a vlastnosti premietacieho povrchu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Odpor\u00fa\u010dan\u00e9 je teda u\u017e z\u00fa\u017een\u00e9, ale st\u00e1le nie dostato\u010dne definovan\u00e9. Preto s\u00fa tu ako pr\u00edklady op\u00edsan\u00e9 dve zariadenia:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ak predpoklad\u00e1me miestnos\u0165 s rozmermi 4 x 4 metre s dvoma oknami na jednej strane a projek\u010dnou plochou v uhle 90\u00b0 od druhej strany, projektor so svietivos\u0165ou pribli\u017ene 2 000 ANSI l\u00famenov, ako napr\u00edklad lacnej\u0161\u00ed <a href=\"https:\/\/www.beamer-discount.de\/viewsonic-x1-4k-smart-home-beamer-99255?fs=1560180273\" target=\"_blank\" rel=\"noopener\">Inteligentn\u00fd dom\u00e1ci projektor ViewSonic X1-4K<\/a> za 1 299 eur so svietivos\u0165ou 2 150 ANSI l\u00famenov a kontrastn\u00fdm pomerom 3 mili\u00f3ny :1!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ak je v\u0161ak konferen\u010dn\u00e1 miestnos\u0165 ve\u013ek\u00e1 pribli\u017ene 20 x 10 metrov, projektor je umiestnen\u00fd pribli\u017ene 10 metrov od projek\u010dnej plochy, okn\u00e1 sa daj\u00fa zatemni\u0165, aby sa zn\u00ed\u017eilo svetlo, a projektor je umiestnen\u00fd pod uhlom 90\u00b0 k projek\u010dnej ploche, budete potrebova\u0165 projektor so svietivos\u0165ou aspo\u0148 4 000 ANSI l\u00famenov, ako je napr. <a href=\"https:\/\/www.beamer-discount.de\/optoma-4k400x-98825\" target=\"_blank\" rel=\"noopener\">Optoma 4k 400X<\/a> v s\u00fa\u010dasnosti za cenu pribli\u017ene 1 599 eur v kombin\u00e1cii so schopnos\u0165ou Smart realizova\u0165 <a href=\"https:\/\/www.beamer-discount.de\/ezcast-pro-dongle-ii---5hz-hdmi-receiver-mit-multicast-und-multiview-fuer-ezcast-86358\" target=\"_blank\" rel=\"noopener\">EZCast Pro Dongle II<\/a> v s\u00fa\u010dasnosti 149 eur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cenovo v\u00fdhodnej\u0161ou alternat\u00edvou zariadenia typu \"v\u0161etko v jednom\" s inteligentn\u00fdmi funkciami, svietivos\u0165ou 5 000 ANSI l\u00famenov a trikr\u00e1t vy\u0161\u0161\u00edm kontrastn\u00fdm pomerom 3 mili\u00f3ny:1 je <a href=\"https:\/\/www.beamer-discount.de\/lg-probeam-dbu510p-96166\" target=\"_blank\" rel=\"noopener\">LG ProBeam DBU510P<\/a> v s\u00fa\u010dasnosti na \u00farovni 3 094,62 eura.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ako v\u017edy, samozrejme, neexistuj\u00fa takmer \u017eiadne cenov\u00e9 limity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u0161etky uveden\u00e9 projektory vyu\u017e\u00edvaj\u00fa technol\u00f3giu DLP (Digital Light Processing), ktor\u00e1 v\u010faka zapuzdreniu sveteln\u00e9ho syst\u00e9mu zaru\u010duje dlh\u00fa \u017eivotnos\u0165 a bez\u00fadr\u017ebov\u00fa prev\u00e1dzku.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Projektionsflache\"><\/span>Projek\u010dn\u00e9 pl\u00e1tno<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bez oh\u013eadu na to, ak\u00fd dokonal\u00fd je projektor, ak projek\u010dn\u00e1 plocha nie je dostato\u010dne kvalitn\u00e1, v\u00fdsledok obrazu bude st\u00e1le nedostato\u010dn\u00fd.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Okrem zas\u00favac\u00edch alebo vzty\u010dite\u013en\u00fdch pl\u00e1ten s povrchovou \u00fapravou, reflexn\u00fdch pl\u00e1ten at\u010f. s\u00fa vhodnej\u0161ie pevn\u00e9 projek\u010dn\u00e9 pl\u00e1tna. Na jednej strane sa \u010dast\u00fdm rolovan\u00edm a rozba\u013eovan\u00edm predch\u00e1dza vzniku v\u013an a opotrebovaniu povrchu; na druhej strane je pevne namontovan\u00e9 premietacie pl\u00e1tno v\u017edy \u00fah\u013eadne napnut\u00e9 a pripraven\u00e9 na pou\u017eitie v akomko\u013evek \u010dase.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Existuj\u00fa r\u00f4zne ve\u013ekosti v z\u00e1vislosti od pozorovacej vzdialenosti. Ve\u013ekos\u0165 prisp\u00f4soben\u00e1 miestnosti sa vypo\u010d\u00edta takto:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Odpor\u00fa\u010dan\u00e1 uhloprie\u010dka - h\u013abka miestnosti \/ 2<\/li>\n\n\n\n<li>Odpor\u00fa\u010dan\u00e1 v\u00fd\u0161ka obrazovky (form\u00e1t 16:9) - uhloprie\u010dka \/ 18,86 x 9<\/li>\n\n\n\n<li>Odpor\u00fa\u010dan\u00e1 \u0161\u00edrka obrazovky (form\u00e1t 16:9) - uhloprie\u010dka \/ 18,86 x 16<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Vy\u0161\u0161ie uveden\u00e9 vzorce platia primerane pre form\u00e1ty 16:10 a 4:3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na z\u00e1klade dvoch vy\u0161\u0161ie op\u00edsan\u00fdch pr\u00edkladov miestnost\u00ed je uhloprie\u010dka miestnosti s rozmermi 4 x 4 m 4 \/ 2 = 2 m, zatia\u013e \u010do uhloprie\u010dka mont\u00e1\u017enej miestnosti je 20 \/ 2 = 10 m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fd\u0161ka obrazovky pre pr\u00edkladn\u00fa ob\u00fdvaciu izbu je 2 \/ 18,86 x 9 = 0,95 m, pre rokovaciu miestnos\u0165 10 \/ 18,86 x 9 = 4,77, \u0161\u00edrka analogicky 1,70 m, resp. 8,48 m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nie v\u0161etky (mont\u00e1\u017ene) miestnosti s\u00fa tak vysok\u00e9 ako kinos\u00e1ly. Preto je tu obmedzen\u00e1 maxim\u00e1lna v\u00fd\u0161ka miestnosti m\u00ednus spodn\u00e1 plocha, ktor\u00fa u\u017e nie je vidie\u0165 zo zadn\u00fdch radov sedadiel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Najv\u00e4\u010d\u0161ia mo\u017en\u00e1 projek\u010dn\u00e1 plocha pre rozl\u00ed\u0161enie 4k je preto k dispoz\u00edcii s <a href=\"https:\/\/www.beamer-discount.de\/leinwand\/celexon\/rahmenleinwand-expert-purewhite-400-x-225-p-50553.html\" target=\"_blank\" rel=\"noopener\">Obrazovka r\u00e1mu<\/a> s rozmermi 400 x 225 x 2,7 cm sa d\u00e1 v s\u00fa\u010dasnosti realizova\u0165 za 899,99 eur.<\/p>","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">\u010cas \u010d\u00edtania<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">z\u00e1pisnice<\/span><\/span>Zrkadlenie obrazovky je met\u00f3da odosielania video a zvukov\u00e9ho obsahu z mobiln\u00e9ho telef\u00f3nu alebo tabletu cez Wi-Fi do zariadenia na prehr\u00e1vanie, ako je napr\u00edklad inteligentn\u00fd telev\u00edzor alebo projektor, a jeho zrkadlenie alebo prehr\u00e1vanie na tomto zariaden\u00ed. V\u00e4\u010d\u0161ina inteligentn\u00fdch zariaden\u00ed pon\u00faka pr\u00edslu\u0161n\u00e9 nastavenia ako \u0161tandard. Nadviazanie spojenia Spojenie vy\u017eaduje zdie\u013ean\u00fa sie\u0165 WLAN a nadv\u00e4zuje sa pomocou mobiln\u00e9ho telef\u00f3nu alebo tabletu.&nbsp;<a href=\"https:\/\/csiag.eu\/sk\/blog\/2023\/10\/01\/screen-mirroring\/\" rel=\"bookmark\">\u010c\u00edta\u0165 viac \"<span class=\"screen-reader-text\">Zrkadlenie obrazovky<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[2428],"tags":[2515,2514,2516,482,2502,2496,2510,2452,2508,2506,2497,2505,948,2429,2509,481,2454,2501,838,1043,2453,2498,2512,2511,2503,1382,2504,2451,2499,2500,2513,2507,2446,2449,2448,2447,1271,2450,2065],"class_list":["post-5283","post","type-post","status-publish","format-standard","hentry","category-video-technik","tag-2515","tag-2514","tag-2516","tag-android","tag-ansi-lumen","tag-beamer","tag-briet","tag-desktop","tag-diagonale","tag-dlp","tag-ezcast-dongle","tag-ezcast-pro-dongle-ii","tag-handy","tag-hdmi","tag-hoehe","tag-ios","tag-kaskadierung","tag-kontrastverhaeltnis","tag-lan","tag-lan-kabel","tag-laptop","tag-leinwand","tag-leinwandbreite","tag-leinwandhoehe","tag-lg-probeam-dbu510p","tag-lumen","tag-optoma-4k-400x","tag-os-x","tag-projektionsflaeche","tag-rahmenleinwand","tag-raumtiefe","tag-reflektiv","tag-screen-mirroring","tag-smart-beamer","tag-smart-tv","tag-spiegeln","tag-tablet","tag-verbindung","tag-windows"],"modified_by":"Achim Goerner","_links":{"self":[{"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/posts\/5283","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/comments?post=5283"}],"version-history":[{"count":0,"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/posts\/5283\/revisions"}],"wp:attachment":[{"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/media?parent=5283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/categories?post=5283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csiag.eu\/sk\/wp-json\/wp\/v2\/tags?post=5283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}