{"id":6434,"date":"2023-08-25T00:00:00","date_gmt":"2023-08-25T00:00:00","guid":{"rendered":"https:\/\/tech-lib.eu\/tech\/rozumime-vodicum-v-kabelu-hdmi\/"},"modified":"2023-08-25T00:00:00","modified_gmt":"2023-08-25T00:00:00","slug":"rozumime-vodicum-v-kabelu-hdmi","status":"publish","type":"post","link":"https:\/\/tech-lib.eu\/tech\/rozumime-vodicum-v-kabelu-hdmi\/","title":{"rendered":"Rozum\u00edme vodi\u010d\u016fm v kabelu HDMI"},"content":{"rendered":"
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Jak dlouh\u00fd m\u016f\u017ee b\u00fdt HDMI kabel?<\/div>\n
B\u011b\u017en\u00fd kabel HDMI m\u016f\u017ee dos\u00e1hnout d\u00e9lky 12 a\u017e 15 metr\u016f. U kabel\u016f do 5 metr\u016f m\u016f\u017ee kabel kategorie 1 dos\u00e1hnout kvalit kategorie 2. Del\u0161\u00ed kabel m\u016f\u017ee zp\u016fsobit nestabilitu a blik\u00e1n\u00ed na obrazovce. Cached<\/div>\n
\n\t\t\t\t\t Dal\u0161\u00ed informace najdete na<\/span> cs.wikipedia.org<\/a>\n\t\t\t\t<\/div>\n<\/p><\/div>\n
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Vysoce kvalitn\u00ed audio a video sign\u00e1ly se \u010dasto p\u0159en\u00e1\u0161ej\u00ed mezi za\u0159\u00edzen\u00edmi, jako jsou televizory, po\u010d\u00edta\u010de, hern\u00ed konzole a dal\u0161\u00ed, pomoc\u00ed kabel\u016f HDMI (High-Definition Multimedia Interface). Tyto kabely jsou obl\u00edbenou volbou pro syst\u00e9my dom\u00e1c\u00ed z\u00e1bavy a firemn\u00ed prost\u0159ed\u00ed d\u00edky sv\u00e9 pov\u011bsti, \u017ee poskytuj\u00ed \u010dist\u00fd a \u017eiv\u00fd obraz. Mnoho lid\u00ed v\u0161ak zaj\u00edm\u00e1 vnit\u0159n\u00ed fungov\u00e1n\u00ed kabel\u016f HDMI, zejm\u00e9na kolik maj\u00ed vodi\u010d\u016f a k \u010demu slou\u017e\u00ed. T\u011bmto ot\u00e1zk\u00e1m se budeme v\u011bnovat v tomto \u010dl\u00e1nku a d\u016fkladn\u011b v\u00e1s sezn\u00e1m\u00edme s vodi\u010di v kabelu HDMI. Kolik vodi\u010d\u016f obsahuje kabel HDMI? <\/p>\n

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Standardn\u00ed kabel HDMI m\u00e1 19 samostatn\u00fdch vodi\u010d\u016f, z nich\u017e ka\u017ed\u00fd m\u00e1 p\u0159i p\u0159enosu zvukov\u00fdch a obrazov\u00fdch sign\u00e1l\u016f odli\u0161nou funkci. Rozd\u011blen\u00ed t\u011bchto vodi\u010d\u016f v kabelu do r\u016fzn\u00fdch skupin umo\u017e\u0148uje efektivn\u00ed p\u0159enos dat. T\u011bchto 19 vodi\u010d\u016f lze d\u00e1le rozd\u011blit do t\u0159\u00ed hlavn\u00edch skupin: vodi\u010de CEC (Consumer Electronics Control), vodi\u010de DDC (Display Data Channel) a vodi\u010de TMDS (Transition Minimized Differential Signaling). Jak\u00e9 kabely tvo\u0159\u00ed HDMI? <\/p>\n

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1. Vodi\u010de TMDS: Nejd\u016fle\u017eit\u011bj\u0161\u00edmi prvky kabelu HDMI jsou vodi\u010de TMDS. Existuj\u00ed t\u0159i p\u00e1ry TMDS, z nich\u017e ka\u017ed\u00fd p\u0159en\u00e1\u0161\u00ed samostatn\u00fd barevn\u00fd kan\u00e1l (\u010derven\u00fd, zelen\u00fd nebo modr\u00fd) videosign\u00e1lu a tak\u00e9 synchroniza\u010dn\u00ed hodinov\u00fd sign\u00e1l. D\u00edky technice diferenci\u00e1ln\u00ed signalizace, kterou tyto vodi\u010de pou\u017e\u00edvaj\u00ed, se sni\u017euje ru\u0161en\u00ed a zachov\u00e1v\u00e1 se integrita sign\u00e1lu i p\u0159i del\u0161\u00ed d\u00e9lce kabelu. <\/p>\n

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2. Vodi\u010d CEC: Vodi\u010d CEC umo\u017e\u0148uje komunikaci a ovl\u00e1d\u00e1n\u00ed mezi za\u0159\u00edzen\u00edmi p\u0159ipojen\u00fdmi k HDMI. U\u017eivatelsk\u00fd z\u00e1\u017eitek je jednodu\u0161\u0161\u00ed, proto\u017ee umo\u017e\u0148uje funkce, jako je p\u0159ed\u00e1v\u00e1n\u00ed d\u00e1lkov\u00e9ho ovl\u00e1d\u00e1n\u00ed a ovl\u00e1d\u00e1n\u00ed za\u0159\u00edzen\u00ed pouze jedn\u00edm d\u00e1lkov\u00fdm ovlada\u010dem. Z\u00e1kladn\u00ed p\u0159enos zvuku a obrazu vodi\u010d CEC nevy\u017eaduje, m\u016f\u017ee v\u0161ak zlep\u0161it fungov\u00e1n\u00ed v\u0161ech za\u0159\u00edzen\u00ed vybaven\u00fdch HDMI. <\/p>\n

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3. Dr\u00e1t DDC: Informace o zobrazovac\u00edm za\u0159\u00edzen\u00ed se p\u0159en\u00e1\u0161ej\u00ed do zdrojov\u00e9ho za\u0159\u00edzen\u00ed prost\u0159ednictv\u00edm vodi\u010de DDC. Zdrojov\u00e9 za\u0159\u00edzen\u00ed m\u016f\u017ee d\u00edky tomuto obousm\u011brn\u00e9mu propojen\u00ed upravit obrazov\u00fd v\u00fdstup v z\u00e1vislosti na mo\u017enostech p\u0159ipojen\u00e9ho displeje. Za \u00fa\u010delem zaji\u0161t\u011bn\u00ed co nejlep\u0161\u00edho z\u00e1\u017eitku ze sledov\u00e1n\u00ed zaji\u0161\u0165uje spr\u00e1vnou synchronizaci rozli\u0161en\u00ed, obnovovac\u00ed frekvence a dal\u0161\u00edch nastaven\u00ed displeje. <\/p>\n

Je HDMI 1, 2 nebo 3? <\/div>\n

\u010c\u00edsla se \u010dasto pou\u017e\u00edvaj\u00ed k ozna\u010den\u00ed r\u016fzn\u00fdch verz\u00ed HDMI, nap\u0159\u00edklad HDMI 1.4, HDMI 2.0, HDMI 2.1 atd. Tato \u010d\u00edsla ozna\u010duj\u00ed r\u016fzn\u00e9 verze specifikace HDMI, p\u0159i\u010dem\u017e ka\u017ed\u00e1 nov\u00e1 verze p\u0159in\u00e1\u0161\u00ed vylep\u0161en\u00e9 mo\u017enosti a funkce. Verzi HDMI ur\u010duje sp\u00ed\u0161e podporovan\u00e1 \u0161\u00ed\u0159ka p\u00e1sma a funkce rozhran\u00ed ne\u017e po\u010det vodi\u010d\u016f v p\u0159ipojen\u00ed. <\/p>\n

Lze vodi\u010de HDMI st\u0159\u00edhat a spojovat? <\/div>\n

A\u010dkoli je \u0159ez\u00e1n\u00ed a spojov\u00e1n\u00ed kabel\u016f HDMI technicky mo\u017en\u00e9, nedoporu\u010duje se z n\u011bkolika d\u016fvod\u016f. P\u0159edev\u0161\u00edm jsou kabely HDMI pe\u010dliv\u011b vyrobeny tak, aby byla zachov\u00e1na integrita sign\u00e1lu a omezeno ru\u0161en\u00ed. \u0158ez\u00e1n\u00ed a spojov\u00e1n\u00ed kabelu by mohlo zm\u011bnit jeho d\u00e9lku nebo strukturu, co\u017e by sn\u00ed\u017eilo kvalitu sign\u00e1lu a vedlo k hor\u0161\u00edmu v\u00fdkonu zvuku a obrazu. <\/p>\n

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Za druh\u00e9, kabely HDMI maj\u00ed \u010dasto slo\u017eitou vnit\u0159n\u00ed konstrukci s mnoha vrstvami st\u00edn\u011bn\u00ed a izolace. Bez p\u0159\u00edslu\u0161n\u00e9ho vybaven\u00ed a \u0161kolen\u00ed m\u016f\u017ee b\u00fdt \u0159ez\u00e1n\u00ed a spojov\u00e1n\u00ed t\u011bchto kabel\u016f pro v\u011bt\u0161inu lid\u00ed obt\u00ed\u017en\u00e9 a nebezpe\u010dn\u00e9. Jsou v\u0161echny kabely HDMI 4K? <\/p>\n

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A\u010dkoli v\u0161echna p\u0159ipojen\u00ed HDMI mohou podporovat rozli\u0161en\u00ed 4K, ne v\u0161echny kabely HDMI maj\u00ed pot\u0159ebnou \u0161\u00ed\u0159ku p\u00e1sma pro p\u0159enos informac\u00ed 4K s vy\u0161\u0161\u00ed obnovovac\u00ed frekvenc\u00ed. Pot\u0159ebnou \u0161\u00ed\u0159ku p\u00e1sma pro video 4K p\u0159i 60 Hz zavedla specifikace HDMI 2.0 a HDMI 2.1 ji vylep\u0161ila, aby zvl\u00e1dla 4K p\u0159i 120 Hz a je\u0161t\u011b vy\u0161\u0161\u00ed rozli\u0161en\u00ed, jako je 8K. <\/p>\n

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Pro dosa\u017een\u00ed nejlep\u0161\u00edho mo\u017en\u00e9ho v\u00fdkonu p\u0159i p\u0159enosu obsahu 4K se doporu\u010duje pou\u017e\u00edvat kabely HDMI ozna\u010den\u00e9 „High-Speed“ nebo „Premium High-Speed“. Tyto kabely jsou navr\u017eeny tak, aby vydr\u017eely vy\u0161\u0161\u00ed p\u0159enosov\u00e9 rychlosti pot\u0159ebn\u00e9 pro video v rozli\u0161en\u00ed 4K, a z\u00edskaly p\u0159\u00edslu\u0161n\u00e9 certifikace. <\/p>\n

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Z\u00e1v\u011brem lze \u0159\u00edci, \u017ee kabel HDMI m\u00e1 obvykle 19 vodi\u010d\u016f, v\u010detn\u011b vodi\u010d\u016f TMDS pro video a hodinov\u00fd sign\u00e1l, vodi\u010de CEC pro ovl\u00e1d\u00e1n\u00ed a komunikaci za\u0159\u00edzen\u00ed a vodi\u010de DDC pro v\u00fdm\u011bnu informac\u00ed o zobrazen\u00ed. Vzhledem k mo\u017enosti ztr\u00e1ty sign\u00e1lu a skute\u010dnosti, \u017ee ne v\u0161echny kabely HDMI podporuj\u00ed rozli\u0161en\u00ed 4K s vy\u0161\u0161\u00ed obnovovac\u00ed frekvenc\u00ed, se nedoporu\u010duje kabely HDMI st\u0159\u00edhat a slu\u010dovat. P\u0159i nastavov\u00e1n\u00ed audiovizu\u00e1ln\u00edho vybaven\u00ed v\u00e1m d\u016fkladn\u00e1 znalost fungov\u00e1n\u00ed kabel\u016f HDMI pom\u016f\u017ee u\u010dinit rozumn\u00fd v\u00fdb\u011br a zaru\u010d\u00ed plynul\u00fd multimedi\u00e1ln\u00ed z\u00e1\u017eitek.<\/p><\/div>\n

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FAQ<\/div>\n
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Jsou v\u0161echny kabely HDMI zapojeny stejn\u011b?<\/div>\n

Ne, v\u0161echny kabely HDMI nejsou zapojeny stejn\u011b. Po\u010det vodi\u010d\u016f v kabelu HDMI je stejn\u00fd, ale um\u00edst\u011bn\u00ed a funkce t\u011bchto vodi\u010d\u016f se mohou li\u0161it. Kabely HDMI lze rozd\u011blit do n\u011bkolika kategori\u00ed, v\u010detn\u011b standardn\u00edch HDMI, vysokorychlostn\u00edch HDMI a vysokorychlostn\u00edch HDMI Premium. Tyto kategorie ozna\u010duj\u00ed schopnosti a funkce kabel\u016f, jako je podpora konkr\u00e9tn\u00edch rozli\u0161en\u00ed, obnovovac\u00edch frekvenc\u00ed a zvukov\u00fdch form\u00e1t\u016f. R\u016fzn\u00e9 verze HDMI, nap\u0159\u00edklad HDMI 1.4, HDMI 2.0 a HDMI 2.1, nav\u00edc zav\u00e1d\u011bj\u00ed nov\u00e9 funkce a specifikace, kter\u00e9 mohou m\u00edt vliv na zapojen\u00ed a mo\u017enosti kabel\u016f. P\u0159i v\u00fdb\u011bru kabelu HDMI je proto nezbytn\u00e9 zohlednit konkr\u00e9tn\u00ed specifikace va\u0161ich za\u0159\u00edzen\u00ed a tak\u00e9 funkce, kter\u00e9 hodl\u00e1te pou\u017e\u00edvat. <\/p>\n<\/div>\n

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Zvl\u00e1dne HDMI 1.2 rozli\u0161en\u00ed 4K?<\/div>\n

Ne, HDMI 1.2 nem\u016f\u017ee podporovat rozli\u0161en\u00ed 4K. Maxim\u00e1ln\u00ed rozli\u0161en\u00ed HDMI 1.2, kter\u00e9 bylo ozn\u00e1meno v roce 2005, je 1080p. Pro rozli\u0161en\u00ed 4K byste pot\u0159ebovali HDMI 2.0 nebo nov\u011bj\u0161\u00ed modely, kter\u00e9 byly speci\u00e1ln\u011b vyrobeny pro v\u011bt\u0161\u00ed rozli\u0161en\u00ed a pot\u0159eby \u0161\u00ed\u0159ky p\u00e1sma.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Jak dlouh\u00fd m\u016f\u017ee b\u00fdt HDMI kabel? B\u011b\u017en\u00fd kabel HDMI m\u016f\u017ee dos\u00e1hnout d\u00e9lky 12 a\u017e 15 metr\u016f. U kabel\u016f do 5 metr\u016f m\u016f\u017ee kabel kategorie 1 dos\u00e1hnout kvalit kategorie 2. Del\u0161\u00ed kabel m\u016f\u017ee zp\u016fsobit nestabilitu a blik\u00e1n\u00ed na obrazovce. Cached Dal\u0161\u00ed informace najdete na cs.wikipedia.org Vysoce kvalitn\u00ed audio a video sign\u00e1ly se \u010dasto p\u0159en\u00e1\u0161ej\u00ed mezi za\u0159\u00edzen\u00edmi, … \u010c\u00edst d\u00e1l<\/a><\/p>\n","protected":false},"author":863,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2567],"tags":[],"class_list":["post-6434","post","type-post","status-publish","format-standard","hentry","category-kabely-hdmi-2"],"_links":{"self":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/6434","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\/863"}],"replies":[{"embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/comments?post=6434"}],"version-history":[{"count":0,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/posts\/6434\/revisions"}],"wp:attachment":[{"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/media?parent=6434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/categories?post=6434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech-lib.eu\/tech\/wp-json\/wp\/v2\/tags?post=6434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}