{"id":10613,"date":"2023-08-25T00:00:00","date_gmt":"2023-08-25T00:00:00","guid":{"rendered":"https:\/\/tech-lib.eu\/tech\/jak-funguje-led-tv\/"},"modified":"2023-08-25T00:00:00","modified_gmt":"2023-08-25T00:00:00","slug":"jak-funguje-led-tv","status":"publish","type":"post","link":"https:\/\/tech-lib.eu\/tech\/jak-funguje-led-tv\/","title":{"rendered":"Jak funguje LED TV?"},"content":{"rendered":"
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D\u00edky sv\u00e9mu elegantn\u00edmu vzhledu, vysok\u00e9 energetick\u00e9 \u00fa\u010dinnosti a vynikaj\u00edc\u00ed kvalit\u011b obrazu zaznamenaly LED televizory v posledn\u00ed dob\u011b obrovsk\u00fd n\u00e1r\u016fst popularity. P\u0159em\u00fd\u0161leli jste v\u0161ak n\u011bkdy nad t\u00edm, jak LED televizor vlastn\u011b funguje? V tomto p\u0159\u00edsp\u011bvku prozkoum\u00e1me z\u00e1klady LED televizor\u016f, jak se li\u0161\u00ed od LCD televizor\u016f a krok za krokem rozebereme, jak televizor funguje. Probereme tak\u00e9, jak se od sebe li\u0161\u00ed chytr\u00fd televizor a LED televizor. <\/p>\n

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Z\u00e1kladn\u00ed principy LED televizor\u016f: LED je zkratka pro Light Emitting Diode (dioda vyza\u0159uj\u00edc\u00ed sv\u011btlo) a LED televizor generuje obraz pomoc\u00ed t\u00e9to technologie. Z\u00e1kladn\u00ed my\u0161lenka vyu\u017e\u00edv\u00e1 soubor mal\u00fdch diod LED, kter\u00e9 po pr\u016fchodu elektrick\u00e9ho proudu vytv\u00e1\u0159ej\u00ed sv\u011btlo. Zdroj sv\u011btla se skl\u00e1d\u00e1 z t\u011bchto diod LED, kter\u00e9 jsou um\u00edst\u011bny za obrazovkou. Na rozd\u00edl od b\u011b\u017en\u00fdch televizor\u016f s katodovou trubic\u00ed (CRT) nevy\u017eaduj\u00ed LED televizory samostatn\u00fd zdroj podsv\u00edcen\u00ed, proto\u017ee LED diody samy vyza\u0159uj\u00ed sv\u011btlo. Jak funguj\u00ed za\u0159\u00edzen\u00ed LCD a LED? P\u0159edch\u016fdci LED televizor\u016f jsou LCD (Liquid Crystal Display) televizory. Technologie podsv\u00edcen\u00ed tvo\u0159\u00ed v\u011bt\u0161inu rozd\u00edl\u016f mezi nimi. Televizory LED pou\u017e\u00edvaj\u00ed r\u016fzn\u00e9 diody LED na rozd\u00edl od televizor\u016f LCD, kter\u00e9 jako podsv\u00edcen\u00ed pou\u017e\u00edvaj\u00ed z\u00e1\u0159ivky se studenou katodou (CCFL). V LCD televizoru je obraz vytv\u00e1\u0159en tekut\u00fdmi krystaly v zobrazovac\u00edm panelu, kter\u00e9 bu\u010f blokuj\u00ed, nebo propou\u0161t\u011bj\u00ed sv\u011btlo z CCFL. Na druhou stranu, proto\u017ee LED diody v LED televizoru vyza\u0159uj\u00ed sv\u011btlo p\u0159\u00edmo, maj\u00ed lep\u0161\u00ed kontrast, jas a p\u0159esnost barev. <\/p>\n

Jak funguje televizor krok za krokem? Pro lep\u0161\u00ed pochopen\u00ed si rozebereme ovl\u00e1d\u00e1n\u00ed televizoru krok za krokem: <\/div>\n

1. Zdroj: Televizor z\u00edsk\u00e1v\u00e1 sign\u00e1l z r\u016fzn\u00fdch zdroj\u016f, v\u010detn\u011b hern\u00edch konzol\u00ed, kabelov\u00fdch\/satelitn\u00edch box\u016f a streamovac\u00edch za\u0159\u00edzen\u00ed. Tyto sign\u00e1ly mohou b\u00fdt digit\u00e1ln\u00ed nebo analogov\u00e9 datov\u00e9 sign\u00e1ly. 2. Tuner: Intern\u00ed tuner televizoru dek\u00f3duje a form\u00e1tuje p\u0159\u00edchoz\u00ed sign\u00e1ly tak, aby je bylo mo\u017en\u00e9 zobrazit na obrazovce. Rozd\u011bluje zvukov\u00e9 a obrazov\u00e9 sign\u00e1ly na jednotliv\u00e9 slo\u017eky a p\u0159ipravuje je ke zpracov\u00e1n\u00ed. 3. Videoprocesor: Toto za\u0159\u00edzen\u00ed vylep\u0161uje videosign\u00e1l t\u00edm, \u017ee jej p\u0159eb\u00edr\u00e1. Pro zlep\u0161en\u00ed vizu\u00e1ln\u00ed kvality upravuje ostrost, barvy a jas. Ve \u010dtvrt\u00e9m kroku je pak videosign\u00e1l p\u0159enesen na zobrazovac\u00ed panel, kter\u00fd je tvo\u0159en tekut\u00fdmi krystaly nebo diodami LED. Zat\u00edmco tekut\u00e9 krystaly v LCD televizoru propou\u0161t\u011bj\u00ed nebo blokuj\u00ed sv\u011btlo z CCFL pro zobrazen\u00ed obrazu v LED televizoru, pole LED diod, kter\u00e9 tvo\u0159\u00ed LED televizor, se rozsv\u00edt\u00ed a vytvo\u0159\u00ed obraz. 5. Zvuk: K p\u0159ehr\u00e1v\u00e1n\u00ed zvukov\u00e9ho sign\u00e1lu se pou\u017e\u00edvaj\u00ed reproduktory televizoru nebo jin\u00e9 extern\u00ed zvukov\u00e9 za\u0159\u00edzen\u00ed. N\u011bkter\u00e9 televizory podporuj\u00ed tak\u00e9 technologie prostorov\u00e9ho zvuku, kter\u00e9 umo\u017e\u0148uj\u00ed pohlcuj\u00edc\u00ed zvukov\u00fd z\u00e1\u017eitek. <\/p>\n

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\u010c\u00edm se li\u0161\u00ed LED televizor od chytr\u00e9ho televizoru? Zat\u00edmco chytr\u00fd televizor ozna\u010duje dal\u0161\u00ed funkce, kter\u00e9 poskytuje, LED ozna\u010duje zobrazovac\u00ed technologii pou\u017eitou v televizoru. D\u00edky vestav\u011bn\u00fdm aplikac\u00edm a p\u0159ipojen\u00ed k internetu umo\u017e\u0148uje chytr\u00fd televizor div\u00e1k\u016fm streamovat m\u00e9dia ze zn\u00e1m\u00fdch webov\u00fdch str\u00e1nek, jako je Netflix, Hulu nebo YouTube. Krom\u011b toho umo\u017e\u0148uje internetov\u00e9 aktivity, jako je zapojen\u00ed do soci\u00e1ln\u00edch s\u00edt\u00ed a prohl\u00ed\u017een\u00ed webov\u00fdch str\u00e1nek. P\u0159\u00edtomnost p\u0159ipojen\u00ed k internetu a chytr\u00fdch funkc\u00ed v\u0161ak ur\u010duje, zda se LED televizor kvalifikuje jako chytr\u00fd televizor, nebo ne. <\/p>\n

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Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee LED televizory vytv\u00e1\u0159ej\u00ed obraz pomoc\u00ed soustavy LED diod jako zdroje sv\u011btla. Ve srovn\u00e1n\u00ed s konkuren\u010dn\u00edmi LCD televizory nab\u00edzej\u00ed vy\u0161\u0161\u00ed kvalitu obrazu a energetickou \u00faspornost. Je snaz\u0161\u00ed pochopit technologii, kter\u00e1 stoj\u00ed za televizorem, kdy\u017e zn\u00e1te p\u0159esn\u00e9 kroky, kter\u00fdmi proch\u00e1z\u00ed jeho provoz. V neposledn\u00ed \u0159ad\u011b, zat\u00edmco LED se pou\u017e\u00edv\u00e1 k popisu zobrazovac\u00ed technologie, chytr\u00fd televizor jde nad jej\u00ed r\u00e1mec t\u00edm, \u017ee poskytuje p\u0159\u00edstup k internetu a dal\u0161\u00ed funkce pro lep\u0161\u00ed mo\u017enosti z\u00e1bavy.<\/p><\/div>\n

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FAQ<\/div>\n
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Jak\u00e1 je fyzik\u00e1ln\u00ed podstata LED televizoru?<\/div>\n

Pro fyziku LED televizor\u016f jsou kl\u00ed\u010dov\u00e9 sv\u011bteln\u00e9 diody (LED), kter\u00e9 se pou\u017e\u00edvaj\u00ed k vytv\u00e1\u0159en\u00ed obrazu na obrazovce. V technologii „displeje z tekut\u00fdch krystal\u016f“ (LCD), kterou pou\u017e\u00edvaj\u00ed televizory LED, je vrstva tekut\u00fdch krystal\u016f vlo\u017eena mezi dv\u011b vrstvy polarizovan\u00e9ho skla. <\/p>\n

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LED diody vyza\u0159uj\u00ed sv\u011btlo, kdy\u017e je do nich p\u0159iveden elektrick\u00fd proud. Barva ka\u017ed\u00e9ho pixelu je ur\u010dena \u0159adou filtr\u016f, kter\u00fdmi toto sv\u011btlo proch\u00e1z\u00ed, v\u010detn\u011b barevn\u00e9ho filtru. Tekut\u00e9 krystaly ka\u017ed\u00e9ho pixelu funguj\u00ed jako mikroskopick\u00e9 clony, kter\u00e9 v z\u00e1vislosti na p\u0159iveden\u00e9m elektrick\u00e9m nap\u011bt\u00ed bu\u010f propou\u0161t\u011bj\u00ed, nebo blokuj\u00ed sv\u011btlo. <\/p>\n

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Televizor m\u016f\u017ee vytv\u00e1\u0159et po\u017eadovan\u00fd obraz pe\u010dliv\u00fdm nastaven\u00edm mno\u017estv\u00ed a druhu sv\u011btla, kter\u00e9 proch\u00e1z\u00ed jednotliv\u00fdmi pixely. Miliony pixel\u016f tvo\u0159\u00ed celou obrazovku, kter\u00e1 je uspo\u0159\u00e1d\u00e1na do m\u0159\u00ed\u017eky. Plnobarevn\u00fd obraz se na obrazovce vytv\u00e1\u0159\u00ed rychlou zm\u011bnou nap\u011bt\u00ed na tekut\u00fdch krystalech, co\u017e umo\u017e\u0148uje pixel\u016fm vytv\u00e1\u0159et r\u016fzn\u00e9 barvy a \u00farovn\u011b jasu. <\/p>\n

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K vytvo\u0159en\u00ed \u017eiv\u00e9ho a detailn\u00edho zobrazen\u00ed vyu\u017e\u00edvaj\u00ed LED televizory fyzik\u00e1ln\u00ed principy vyza\u0159ov\u00e1n\u00ed sv\u011btla, polarizace, filtrov\u00e1n\u00ed barev a manipulace s tekut\u00fdmi krystaly. <\/p>\n<\/div>\n

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Co je na LED televizorech zvl\u00e1\u0161tn\u00edho?<\/div>\n

Na rozd\u00edl od b\u011b\u017en\u00fdch LCD televizor\u016f jsou LED televizory, zn\u00e1m\u00e9 tak\u00e9 jako televizory se sv\u011bteln\u00fdmi diodami, jedine\u010dn\u00e9 d\u00edky neobvykl\u00e9 technologii podsv\u00edcen\u00ed, kterou pou\u017e\u00edvaj\u00ed. Na rozd\u00edl od LCD televizor\u016f, kter\u00e9 jako zdroj podsv\u00edcen\u00ed pou\u017e\u00edvaj\u00ed z\u00e1\u0159ivky, vyu\u017e\u00edvaj\u00ed LED televizory k produkci sv\u011btla soustavu sv\u011bteln\u00fdch diod (LED). <\/p>\n

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Srovn\u00e1n\u00ed podsv\u00edcen\u00ed LED se z\u00e1\u0159ivkov\u00fdm podsv\u00edcen\u00edm p\u0159in\u00e1\u0161\u00ed \u0159adu v\u00fdhod. P\u0159edev\u0161\u00edm LED diody spot\u0159ebov\u00e1vaj\u00ed m\u00e9n\u011b energie, co\u017e sni\u017euje cenu elektrick\u00e9 energie. Krom\u011b toho lze u televizor\u016f s LED podsv\u00edcen\u00edm zv\u00fd\u0161it jas a dos\u00e1hnout tak barevn\u011bj\u0161\u00edho a \u017eiv\u011bj\u0161\u00edho zobrazen\u00ed. <\/p>\n

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Vzhledem k tomu, \u017ee jednotliv\u00e9 diody LED lze v tmav\u00fdch \u010d\u00e1stech obrazovky ztlumit nebo zcela vypnout, \u010d\u00edm\u017e se dos\u00e1hne hlub\u0161\u00ed \u010dern\u00e9 a vy\u0161\u0161\u00ed \u010distoty obrazu, nab\u00edzej\u00ed televizory LED tak\u00e9 lep\u0161\u00ed kontrastn\u00ed pom\u011bry. P\u0159i hran\u00ed videoher nebo sledov\u00e1n\u00ed film\u016f s ponur\u00fdmi sc\u00e9nami tato funkce zvy\u0161uje celkov\u00fd z\u00e1\u017eitek ze sledov\u00e1n\u00ed. <\/p>\n

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Televizory LED jsou nav\u00edc obvykle esteti\u010dt\u011bj\u0161\u00ed a snadn\u011bji se instaluj\u00ed ne\u017e televizory LCD, proto\u017ee jsou obvykle ten\u010d\u00ed a leh\u010d\u00ed. Vzhledem k tomu, \u017ee LED diody maj\u00ed del\u0161\u00ed provozn\u00ed \u017eivotnost ne\u017e z\u00e1\u0159ivky, jejich pou\u017eit\u00ed tak\u00e9 p\u0159isp\u00edv\u00e1 k del\u0161\u00ed \u017eivotnosti televizoru. <\/p>\n

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Schopnost dos\u00e1hnout \u0161ir\u0161\u00edho barevn\u00e9ho gamutu neboli schopnost zobrazit \u0161ir\u0161\u00ed \u0161k\u00e1lu odst\u00edn\u016f umo\u017e\u0148uje televizor\u016fm LED reprodukovat barvy p\u0159esn\u011bji a realisti\u010dt\u011bji. <\/p>\n

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Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee pou\u017eit\u00ed technologie LED podsv\u00edcen\u00ed v LED televizorech p\u0159in\u00e1\u0161\u00ed v\u00fdhody, mezi kter\u00e9 pat\u0159\u00ed vy\u0161\u0161\u00ed jas a kontrast, ten\u010d\u00ed konstrukce, del\u0161\u00ed \u017eivotnost a lep\u0161\u00ed reprodukce barev. LED televizory jsou d\u00edky sv\u00fdm vlastnostem jedine\u010dn\u00e9 a mezi spot\u0159ebiteli obl\u00edben\u00e9.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

D\u00edky sv\u00e9mu elegantn\u00edmu vzhledu, vysok\u00e9 energetick\u00e9 \u00fa\u010dinnosti a vynikaj\u00edc\u00ed kvalit\u011b obrazu zaznamenaly LED televizory v posledn\u00ed dob\u011b obrovsk\u00fd n\u00e1r\u016fst popularity. P\u0159em\u00fd\u0161leli jste v\u0161ak n\u011bkdy nad t\u00edm, jak LED televizor vlastn\u011b funguje? V tomto p\u0159\u00edsp\u011bvku prozkoum\u00e1me z\u00e1klady LED televizor\u016f, jak se li\u0161\u00ed od LCD televizor\u016f a krok za krokem rozebereme, jak televizor funguje. Probereme tak\u00e9, jak … \u010c\u00edst d\u00e1l<\/a><\/p>\n","protected":false},"author":3413,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[225],"tags":[],"class_list":["post-10613","post","type-post","status-publish","format-standard","hentry","category-electronics"],"_links":{"self":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/10613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/users\/3413"}],"replies":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/comments?post=10613"}],"version-history":[{"count":0,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/10613\/revisions"}],"wp:attachment":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/media?parent=10613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/categories?post=10613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/tags?post=10613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}