{"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":"zrcadleni-obrazovky","status":"publish","type":"post","link":"https:\/\/csiag.eu\/cs\/blog\/2023\/10\/01\/screen-mirroring\/","title":{"rendered":"Zrcadlen\u00ed obrazovky"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 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\/cs\/blog\/2023\/10\/01\/screen-mirroring\/#Verbindungsaufbau\" >Nastaven\u00ed p\u0159ipojen\u00ed<\/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\/cs\/blog\/2023\/10\/01\/screen-mirroring\/#Anwendungsbeispiel\" >P\u0159\u00edklad aplikace<\/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\/cs\/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\/cs\/blog\/2023\/10\/01\/screen-mirroring\/#Projektionsflache\" >Projek\u010dn\u00ed plocha<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Doba \u010dten\u00ed<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minuty<\/span><\/span>\n<p class=\"wp-block-paragraph\">Zrcadlen\u00ed obrazovky je metoda odes\u00edl\u00e1n\u00ed obrazov\u00e9ho a zvukov\u00e9ho obsahu z mobiln\u00edho telefonu nebo tabletu prost\u0159ednictv\u00edm s\u00edt\u011b WLAN do p\u0159ehr\u00e1vac\u00edho za\u0159\u00edzen\u00ed, nap\u0159\u00edklad chytr\u00e9ho televizoru nebo projektoru, kde jej lze zrcadlit nebo p\u0159ehr\u00e1vat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u011bt\u0161ina chytr\u00fdch za\u0159\u00edzen\u00ed nab\u00edz\u00ed odpov\u00eddaj\u00edc\u00ed nastaven\u00ed jako standard.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Verbindungsaufbau\"><\/span>Nastaven\u00ed p\u0159ipojen\u00ed<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159ipojen\u00ed vy\u017eaduje sd\u00edlenou s\u00ed\u0165 Wi-Fi a je iniciov\u00e1no z mobiln\u00edho telefonu nebo tabletu. Po aktivaci zrcadlen\u00ed obrazovky a v\u00fdb\u011bru p\u0159\u00edslu\u0161n\u00e9ho v\u00fdstupn\u00edho za\u0159\u00edzen\u00ed na mobiln\u00edm za\u0159\u00edzen\u00ed zobraz\u00ed chytr\u00fd televizor nebo projektor obvykle \u010dty\u0159m\u00edstn\u00fd \u010d\u00edseln\u00fd k\u00f3d, kter\u00fd je t\u0159eba zadat na mobiln\u00edm za\u0159\u00edzen\u00ed, aby bylo nav\u00e1z\u00e1no spojen\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jakmile je nav\u00e1z\u00e1no spojen\u00ed, obsah mobiln\u00edho za\u0159\u00edzen\u00ed v\u010detn\u011b zvuku je vyveden do p\u0159ehr\u00e1vac\u00edho za\u0159\u00edzen\u00ed. To funguje pro za\u0159\u00edzen\u00ed se syst\u00e9mem iOS i Android.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Obsah obrazovky ze stoln\u00edch po\u010d\u00edta\u010d\u016f nebo notebook\u016f s opera\u010dn\u00edm syst\u00e9mem OS X nebo Windows lze t\u00edmto zp\u016fsobem zobrazit a zrcadlit tak\u00e9 na t\u011bchto chytr\u00fdch televizorech nebo projektorech.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Anwendungsbeispiel\"><\/span>P\u0159\u00edklad aplikace<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">P\u0159edpokl\u00e1dejme, \u017ee m\u00e1te videokameru s p\u0159ipojen\u00edm LAN a HDMI, jej\u00ed\u017e zvukov\u00e9 a obrazov\u00e9 sign\u00e1ly se maj\u00ed p\u0159ehr\u00e1vat na velk\u00e9m televizoru Smart TV. Kamera a televizor jsou um\u00edst\u011bny v r\u016fzn\u00fdch m\u00edstnostech, p\u0159\u00edpadn\u011b i v r\u016fzn\u00fdch patrech, vzd\u00e1len\u00fdch od sebe asi 60 metr\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nyn\u00ed je mo\u017en\u00e9 pou\u017e\u00edt kabel HDMI. P\u0159i rozli\u0161en\u00ed videa 1080 v\u0161ak m\u016f\u017ee p\u0159ekonat vzd\u00e1lenost pouze 10 metr\u016f.<br>Pomoc\u00ed sady p\u0159evodn\u00edku HDMI na LAN, kter\u00e1 se skl\u00e1d\u00e1 z vys\u00edla\u010de se vstupem HDMI a v\u00fdstupem LAN a p\u0159ij\u00edma\u010de se vstupem LAN a v\u00fdstupem HDMI, m\u016f\u017eete p\u0159eklenout velk\u00e9 vzd\u00e1lenosti pomoc\u00ed kabelu LAN, a to a\u017e 120 metr\u016f, a pokud jsou tyto sady zapojeny do kask\u00e1dy, tak i v\u00edce.<br>To v\u0161ak nen\u00ed zcela hospod\u00e1rn\u00e9, zejm\u00e9na pokud je v obou m\u00edstnostech k dispozici stejn\u00e1 Wi-Fi. V takov\u00e9m p\u0159\u00edpad\u011b je dobrou volbou zrcadlen\u00ed obrazovky prost\u0159ednictv\u00edm sd\u00edlen\u00e9 s\u00edt\u011b WLAN, ani\u017e by bylo nutn\u00e9 vynalo\u017eit dal\u0161\u00ed \u00fasil\u00ed (na instalaci a n\u00e1klady).<\/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\u0161uj\u00ed se b\u011b\u017en\u00e9 projektory a chytr\u00e9 projektory. Ty druh\u00e9 podporuj\u00ed v\u00fd\u0161e zm\u00edn\u011bn\u00e9 zrcadlen\u00ed obrazovky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u010casto doch\u00e1z\u00ed k chyb\u011b v \u00fadaji o sv\u011bteln\u00e9m toku, tedy o jasu projektoru. Je t\u0159eba rozli\u0161ovat v\u00fdznam pojm\u016f lumen a ANSI lumen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Lumen ozna\u010duje jas zdroje sv\u011btla, zat\u00edmco ANSI lumen ozna\u010duje jas na projek\u010dn\u00ed plo\u0161e. ANSI lumeny jsou proto v technologii projektor\u016f rozhoduj\u00edc\u00ed.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fdb\u011br projektoru z\u00e1vis\u00ed na sv\u011bteln\u00fdch podm\u00ednk\u00e1ch, velikosti m\u00edstnosti a vzd\u00e1lenosti od projek\u010dn\u00ed plochy. Projektor se \u0161patnou osv\u011btlovac\u00ed technikou nebude schopen poskytnout hodnotn\u00fd obraz v m\u00edstnosti, kter\u00e1 je zaplavena sv\u011btlem a kterou nelze zatemnit. Na druhou stranu vysoce v\u00fdkonn\u00fd projektor v men\u0161\u00ed m\u00edstnosti s pouze \u00fazk\u00fdm oknem bude sv\u00fdm obrazem osv\u011btlovat m\u00edstnost jako ve dne a tak\u00e9 nep\u0159isp\u011bje k div\u00e1ck\u00e9mu po\u017eitku. Kl\u00ed\u010dovou roli pro v\u00fdsledn\u00fd z\u00e1\u017eitek z obrazu hraje tak\u00e9 kontrastn\u00ed pom\u011br projektoru a vlastnosti prom\u00edtac\u00ed plochy.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A\u010dkoli se t\u00edm ji\u017e zu\u017euje na doporu\u010diteln\u00fd, st\u00e1le nen\u00ed dostate\u010dn\u011b definov\u00e1n. Proto jsou zde jako p\u0159\u00edklady pops\u00e1na dv\u011b za\u0159\u00edzen\u00ed:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Za p\u0159edpokladu m\u00edstnosti o rozm\u011brech 4 x 4 metry se dv\u011bma okny na jedn\u00e9 stran\u011b a projek\u010dn\u00ed plochou v \u00fahlu 90\u00b0 od druh\u00e9 strany by projektor se sv\u00edtivost\u00ed p\u0159ibli\u017en\u011b 2 000 ANSI lumen\u016f, jako je nap\u0159\u00edklad levn\u011bj\u0161\u00ed model <a href=\"https:\/\/www.beamer-discount.de\/viewsonic-x1-4k-smart-home-beamer-99255?fs=1560180273\" target=\"_blank\" rel=\"noopener\">Chytr\u00fd dom\u00e1c\u00ed projektor ViewSonic X1-4K<\/a> za 1 299 eur se sv\u00edtivost\u00ed 2 150 ANSI lumen\u016f a kontrastn\u00edm pom\u011brem 3 miliony :1!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pokud je v\u0161ak zasedac\u00ed m\u00edstnost velk\u00e1 p\u0159ibli\u017en\u011b 20 x 10 metr\u016f, projektor je um\u00edst\u011bn ve vzd\u00e1lenosti asi 10 metr\u016f od prom\u00edtac\u00ed plochy, okna lze zatemnit, aby se sn\u00ed\u017eila intenzita sv\u011btla, a projektor je um\u00edst\u011bn pod \u00fahlem 90\u00b0 k prom\u00edtac\u00ed plo\u0161e, budete pot\u0159ebovat projektor se sv\u00edtivost\u00ed alespo\u0148 4 000 ANSI lumen\u016f, jako je nap\u0159. <a href=\"https:\/\/www.beamer-discount.de\/optoma-4k400x-98825\" target=\"_blank\" rel=\"noopener\">Optoma 4k 400X<\/a> v sou\u010dasn\u00e9 dob\u011b za cenu p\u0159ibli\u017en\u011b 1 599 eur v kombinaci se schopnost\u00ed Smart realizovat <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 sou\u010dasn\u00e9 dob\u011b 149 eur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cenov\u011b v\u00fdhodn\u011bj\u0161\u00ed alternativou za\u0159\u00edzen\u00ed \"v\u0161e v jednom\" s chytr\u00fdmi funkcemi, sv\u00edtivost\u00ed 5 000 ANSI lumen\u016f a t\u0159ikr\u00e1t vy\u0161\u0161\u00edm kontrastn\u00edm pom\u011brem 3 miliony:1 je monitor. <a href=\"https:\/\/www.beamer-discount.de\/lg-probeam-dbu510p-96166\" target=\"_blank\" rel=\"noopener\">LG ProBeam DBU510P<\/a> v sou\u010dasn\u00e9 dob\u011b 3 094,62 eur.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jako v\u017edy samoz\u0159ejm\u011b neexistuj\u00ed t\u00e9m\u011b\u0159 \u017e\u00e1dn\u00e9 cenov\u00e9 limity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u0161echny v\u00fd\u0161e uveden\u00e9 projektory vyu\u017e\u00edvaj\u00ed technologii DLP (Digital Light Processing), kter\u00e1 d\u00edky zapouzd\u0159en\u00ed sv\u011bteln\u00e9ho syst\u00e9mu zaru\u010duje dlouhou \u017eivotnost a bez\u00fadr\u017ebov\u00fd provoz.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Projektionsflache\"><\/span>Projek\u010dn\u00ed plocha<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Bez ohledu na to, jak dokonal\u00fd projektor je, pokud prom\u00edtac\u00ed plocha nen\u00ed dostate\u010dn\u011b kvalitn\u00ed, v\u00fdsledn\u00fd obraz bude m\u00edt st\u00e1le n\u011bco do sebe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Krom\u011b zatahovac\u00edch nebo staviteln\u00fdch pl\u00e1ten s povrchovou \u00fapravou, reflexn\u00edch pl\u00e1ten atd. jsou vhodn\u011bj\u0161\u00ed pevn\u00e1 projek\u010dn\u00ed pl\u00e1tna. Na jedn\u00e9 stran\u011b se \u010dast\u00fdm srolov\u00e1n\u00edm a rozvinut\u00edm zamez\u00ed tvorb\u011b vln a opot\u0159eben\u00ed povrchu, na druh\u00e9 stran\u011b je pevn\u011b namontovan\u00e9 projek\u010dn\u00ed pl\u00e1tno v\u017edy \u00fahledn\u011b napnut\u00e9 a p\u0159ipraven\u00e9 k pou\u017eit\u00ed v jak\u00e9mkoli okam\u017eiku.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Existuj\u00ed r\u016fzn\u00e9 velikosti v z\u00e1vislosti na pozorovac\u00ed vzd\u00e1lenosti. Velikost p\u0159izp\u016fsoben\u00e1 m\u00edstnosti se vypo\u010d\u00edt\u00e1 takto:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Doporu\u010den\u00e1 \u00fahlop\u0159\u00ed\u010dka - hloubka m\u00edstnosti \/ 2<\/li>\n\n\n\n<li>Doporu\u010den\u00e1 v\u00fd\u0161ka obrazovky (form\u00e1t 16:9) - \u00fahlop\u0159\u00ed\u010dka \/ 18,86 x 9<\/li>\n\n\n\n<li>Doporu\u010den\u00e1 \u0161\u00ed\u0159ka obrazovky (form\u00e1t 16:9) - \u00fahlop\u0159\u00ed\u010dka \/ 18,86 x 16<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fd\u0161e uveden\u00e9 vzorce plat\u00ed obdobn\u011b pro form\u00e1ty 16:10 a 4:3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Na z\u00e1klad\u011b dvou v\u00fd\u0161e popsan\u00fdch p\u0159\u00edklad\u016f m\u00edstnost\u00ed je \u00fahlop\u0159\u00ed\u010dka pro m\u00edstnost o rozm\u011brech 4 x 4 m 4 \/ 2 = 2 m, zat\u00edmco \u00fahlop\u0159\u00ed\u010dka pro mont\u00e1\u017en\u00ed m\u00edstnost je 20 \/ 2 = 10 m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00fd\u0161ka obrazovky pro p\u0159\u00edkladn\u00fd ob\u00fdvac\u00ed pokoj je 2 \/ 18,86 x 9 = 0,95 m, pro zasedac\u00ed m\u00edstnost 10 \/ 18,86 x 9 = 4,77, \u0161\u00ed\u0159ka analogicky 1,70 m, resp. 8,48 m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ne v\u0161echny (sn\u011bmovn\u00ed) prostory jsou tak vysok\u00e9 jako kinos\u00e1l. Proto je zde omezena maxim\u00e1ln\u00ed v\u00fd\u0161ka m\u00edstnosti po ode\u010dten\u00ed spodn\u00ed plochy, kter\u00e1 ji\u017e nen\u00ed vid\u011bt ze zadn\u00edch \u0159ad sedadel.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nejv\u011bt\u0161\u00ed mo\u017en\u00e1 projek\u010dn\u00ed plocha pro rozli\u0161en\u00ed 4k je tedy k dispozici s modelem <a href=\"https:\/\/www.beamer-discount.de\/leinwand\/celexon\/rahmenleinwand-expert-purewhite-400-x-225-p-50553.html\" target=\"_blank\" rel=\"noopener\">R\u00e1mov\u00e1 obrazovka<\/a> o rozm\u011brech 400 x 225 x 2,7 cm lze v sou\u010dasnosti po\u0159\u00eddit 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\">Doba \u010dten\u00ed<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">minuty<\/span><\/span>Zrcadlen\u00ed obrazovky je metoda odes\u00edl\u00e1n\u00ed obrazov\u00e9ho a zvukov\u00e9ho obsahu z mobiln\u00edho telefonu nebo tabletu p\u0159es Wi-Fi do p\u0159ehr\u00e1vac\u00edho za\u0159\u00edzen\u00ed, jako je chytr\u00fd televizor nebo projektor, a jeho zrcadlen\u00ed nebo p\u0159ehr\u00e1v\u00e1n\u00ed. V\u011bt\u0161ina chytr\u00fdch za\u0159\u00edzen\u00ed nab\u00edz\u00ed odpov\u00eddaj\u00edc\u00ed nastaven\u00ed jako standard. Nav\u00e1z\u00e1n\u00ed p\u0159ipojen\u00ed P\u0159ipojen\u00ed vy\u017eaduje sd\u00edlenou s\u00ed\u0165 WLAN a je nav\u00e1z\u00e1no mobiln\u00edm telefonem nebo tabletem.&nbsp;<a href=\"https:\/\/csiag.eu\/cs\/blog\/2023\/10\/01\/screen-mirroring\/\" rel=\"bookmark\">\u010c\u00edst d\u00e1le \"<span class=\"screen-reader-text\">Zrcadlen\u00ed 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\/cs\/wp-json\/wp\/v2\/posts\/5283","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/comments?post=5283"}],"version-history":[{"count":0,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/posts\/5283\/revisions"}],"wp:attachment":[{"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/media?parent=5283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/categories?post=5283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csiag.eu\/cs\/wp-json\/wp\/v2\/tags?post=5283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}