{"id":1485,"date":"2026-07-22T13:32:00","date_gmt":"2026-07-22T10:32:00","guid":{"rendered":"https:\/\/global.tab-tv.com\/sk\/?p=1485"},"modified":"2026-07-23T21:22:36","modified_gmt":"2026-07-23T18:22:36","slug":"stvorstupnova-redukcia-sumu-televizory-lg-co-je-to-vysvetlene","status":"publish","type":"post","link":"https:\/\/global.tab-tv.com\/sk\/stvorstupnova-redukcia-sumu-televizory-lg-co-je-to-vysvetlene\/","title":{"rendered":"Quad Step Noise Reduction na telev\u00edzoroch LG: \u010do to je?"},"content":{"rendered":"\n

Spolo\u010dnos\u0165 LG propaguje niektor\u00e9 svoje telev\u00edzory ako vybaven\u00e9 technol\u00f3giou Quad Step Noise Reduction<\/strong>, \u0161tvorstup\u0148ov\u00fdm syst\u00e9mom spracovania obrazu. Na prv\u00fd poh\u013ead to znie ako v\u00fdznamn\u00e1 v\u00fdhoda. V\u00e4\u010d\u0161ina \u013eud\u00ed si mysl\u00ed, \u017ee redukcia \u0161umu zlep\u0161uje kvalitu obrazu, a ak spracovanie pozost\u00e1va zo \u0161tyroch krokov namiesto jedn\u00e9ho, v\u00fdsledok by mal by\u0165 e\u0161te lep\u0161\u00ed.<\/p>\n\n\n\n

LG opisuje tieto \u0161tyri kroky nasledovne:<\/p>\n\n\n\n

Krok 1<\/strong> \u2014 Priestorov\u00e1 redukcia \u0161umu.<\/p>\n\n\n\n

Krok 2<\/strong> \u2014 \u010casov\u00e1 redukcia \u0161umu.<\/p>\n\n\n\n

Krok 3<\/strong> \u2014 Zlep\u0161enie hr\u00e1n obrazu.<\/p>\n\n\n\n

Krok 4<\/strong> \u2014 Z\u00e1vere\u010dn\u00e9 doladenie hr\u00e1n.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u010co znamen\u00e1 pojem \u201e\u0161um\u201c v kontexte digit\u00e1lneho videa?<\/strong><\/h2>\n\n\n\n

Aby bolo mo\u017en\u00e9 pochopi\u0165 podstatu tejto funkcie, je d\u00f4le\u017eit\u00e9 vedie\u0165, \u010do pojem \u201e\u0161um\u201c<\/strong> v skuto\u010dnosti znamen\u00e1.<\/p>\n\n\n\n

Pojem obrazov\u00fd \u0161um vznikol e\u0161te v \u00e9re anal\u00f3govej telev\u00edzie. Anal\u00f3gov\u00e9 telev\u00edzne sign\u00e1ly boli n\u00e1chyln\u00e9 na elektrick\u00e9 ru\u0161enie, slab\u00fd pr\u00edjem a \u010fal\u0161ie vonkaj\u0161ie faktory, ktor\u00e9 sp\u00f4sobovali n\u00e1hodn\u00e9 body, zrnitos\u0165 a blikanie na obrazovke. Tieto ne\u017eiaduce poruchy sa za\u010dali ozna\u010dova\u0165 ako obrazov\u00fd \u0161um<\/strong>.<\/p>\n\n\n\n

Digit\u00e1lne video je v\u0161ak z\u00e1sadne odli\u0161n\u00e9. Modern\u00e9 telev\u00edzory prij\u00edmaj\u00fa video vo forme digit\u00e1lnych d\u00e1t, tak\u017ee anal\u00f3gov\u00fd \u0161um sign\u00e1lu, ktor\u00fd bol typick\u00fd pre telev\u00edzne vysielanie, u\u017e neexistuje. Ak je digit\u00e1lny d\u00e1tov\u00fd tok prijat\u00fd spr\u00e1vne, obraz sa zobraz\u00ed presne tak, ako bol zak\u00f3dovan\u00fd.<\/p>\n\n\n\n

Pre\u010do teda LG st\u00e1le hovor\u00ed o redukcii \u0161umu?<\/p>\n\n\n\n

Odpove\u010f je jednoduch\u00e1. Spotrebitelia tento pojem dobre poznaj\u00fa a u\u017e dlh\u00e9 roky si ho sp\u00e1jaj\u00fa s lep\u0161ou kvalitou obrazu. V skuto\u010dnosti modern\u00e9 telev\u00edzory neodstra\u0148uj\u00fa anal\u00f3gov\u00fd \u0161um sign\u00e1lu \u2013 zni\u017euj\u00fa vidite\u013en\u00e9 artefakty vznikaj\u00face pri kompresii digit\u00e1lneho videa.<\/p>\n\n\n\n

Ako funguje Quad Step Noise Reduction<\/strong><\/h2>\n\n\n\n

Digit\u00e1lne video sa pred ulo\u017een\u00edm alebo prenosom komprimuje. Vy\u0161\u0161ia \u00farove\u0148 kompresie zni\u017euje ve\u013ekos\u0165 s\u00faborov aj po\u017eiadavky na prenosov\u00fa kapacitu, \u010d\u00edm rob\u00ed streamovanie efekt\u00edvnej\u0161\u00edm. Siln\u00e1 kompresia v\u0161ak m\u00f4\u017ee z\u00e1rove\u0148 sp\u00f4sobi\u0165 vidite\u013en\u00e9 chyby obrazu, zn\u00e1me ako kompresn\u00e9 artefakty<\/strong>.<\/p>\n\n\n\n

Medzi naj\u010dastej\u0161ie artefakty patria blokov\u00e9 oblasti v obraze, nerovnomern\u00e9 farebn\u00e9 prechody, sveteln\u00e9 halo okolo okrajov objektov, n\u00e1hodn\u00e1 zrnitos\u0165 vznikaj\u00faca po\u010das k\u00f3dovania a pohybov\u00e9 artefakty, ktor\u00e9 sa m\u00f4\u017eu prejavova\u0165 ako slab\u00e9 stopy alebo \u201educhovia\u201c za pohybuj\u00facimi sa objektmi. Tieto nedokonalosti nesp\u00f4sobuje samotn\u00fd telev\u00edzor \u2013 vznikaj\u00fa po\u010das procesu kompresie videa.<\/p>\n\n\n\n

Technol\u00f3gia Quad Step Noise Reduction<\/strong> je navrhnut\u00e1 tak, aby tieto chyby minimalizovala. Pred zobrazen\u00edm ka\u017edej sn\u00edmky obrazov\u00fd procesor telev\u00edzora analyzuje video s cie\u013eom odhali\u0165 be\u017en\u00e9 kompresn\u00e9 artefakty a n\u00e1sledne pou\u017eije korek\u010dn\u00e9 algoritmy na zn\u00ed\u017eenie ich vidite\u013enosti. Ozna\u010denie Quad Step<\/strong> jednoducho znamen\u00e1, \u017ee obraz prech\u00e1dza \u0161tyrmi po sebe nasleduj\u00facimi f\u00e1zami spracovania, pri\u010dom ka\u017ed\u00e1 z nich vykon\u00e1va in\u00fd typ anal\u00fdzy a vylep\u0161enia. Ide o \u010disto softv\u00e9rov\u00fd proces zlep\u0161ovania obrazu vykon\u00e1van\u00fd obrazov\u00fdm procesorom telev\u00edzora, a nie o vlastnos\u0165 samotn\u00e9ho zobrazovacieho panela.<\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

Ktor\u00e9 telev\u00edzory pou\u017e\u00edvaj\u00fa Quad Step Noise Reduction a oplat\u00ed sa t\u00fato funkciu pou\u017e\u00edva\u0165?<\/strong><\/h2>\n\n\n\n

Quad Step Noise Reduction je dostupn\u00e1 najm\u00e4 na telev\u00edzoroch LG vybaven\u00fdch pokro\u010dilej\u0161\u00edmi obrazov\u00fdmi procesormi vr\u00e1tane procesorov \u03b17<\/strong> a \u03b19<\/strong>, ktor\u00e9 sa pou\u017e\u00edvaj\u00fa v mnoh\u00fdch modeloch OLED a NanoCell. Tieto procesory poskytuj\u00fa dostato\u010dn\u00fd v\u00fdpo\u010dtov\u00fd v\u00fdkon na anal\u00fdzu ka\u017edej sn\u00edmky v re\u00e1lnom \u010dase a vyu\u017e\u00edvanie pokro\u010dilej\u0161\u00edch algoritmov na korekciu obrazu. Funkciu mo\u017eno zapn\u00fa\u0165 alebo vypn\u00fa\u0165 v nastaveniach obrazu telev\u00edzora.<\/p>\n\n\n\n

Jej pr\u00ednos z\u00e1vis\u00ed predov\u0161etk\u00fdm od kvality zdrojov\u00e9ho videa. Pri sledovan\u00ed star\u0161\u00edch telev\u00edznych vysielan\u00ed, DVD, streamovac\u00edch slu\u017eieb s n\u00edzkym d\u00e1tov\u00fdm tokom alebo in\u00e9ho silne komprimovan\u00e9ho obsahu m\u00f4\u017ee Quad Step Noise Reduction v\u00fdrazne zn\u00ed\u017ei\u0165 kompresn\u00e9 artefakty a zabezpe\u010di\u0165 \u010distej\u0161\u00ed obraz.<\/p>\n\n\n\n

Pri modernom vysokokvalitnom videu je v\u0161ak jej pr\u00ednos zvy\u010dajne minim\u00e1lny. Obsah zak\u00f3dovan\u00fd pomocou modern\u00fdch kodekov s vysok\u00fdm d\u00e1tov\u00fdm tokom, napr\u00edklad na diskoch 4K Blu-ray alebo v pr\u00e9miov\u00fdch streamovac\u00edch slu\u017eb\u00e1ch, obsahuje ve\u013emi m\u00e1lo vidite\u013en\u00fdch kompresn\u00fdch artefaktov. V tak\u00fdchto pr\u00edpadoch dodato\u010dn\u00e9 spracovanie obrazu spravidla prin\u00e1\u0161a len mal\u00e9 zlep\u0161enie a m\u00f4\u017ee dokonca zn\u00ed\u017ei\u0165 mno\u017estvo jemn\u00fdch detailov v obraze. Z tohto d\u00f4vodu mnoh\u00ed pou\u017e\u00edvatelia rad\u0161ej nech\u00e1vaj\u00fa t\u00fato funkciu vypnut\u00fa pri sledovan\u00ed vysokokvalitn\u00e9ho obsahu.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

Spolo\u010dnos\u0165 LG propaguje niektor\u00e9 svoje telev\u00edzory ako vybaven\u00e9 technol\u00f3giou Quad Step Noise Reduction, \u0161tvorstup\u0148ov\u00fdm syst\u00e9mom spracovania obrazu. Na prv\u00fd poh\u013ead to znie ako v\u00fdznamn\u00e1 v\u00fdhoda. V\u00e4\u010d\u0161ina \u013eud\u00ed si mysl\u00ed, \u017ee redukcia \u0161umu zlep\u0161uje kvalitu obrazu, a ak spracovanie pozost\u00e1va zo \u0161tyroch krokov namiesto jedn\u00e9ho, v\u00fdsledok by mal by\u0165 e\u0161te lep\u0161\u00ed. LG opisuje tieto \u0161tyri kroky […]<\/p>\n","protected":false},"author":1,"featured_media":12995,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[86,26],"tags":[98],"class_list":["post-1485","post","type-post","status-publish","format-standard","has-post-thumbnail","category-technologia","category-tv","tag-lg-tv"],"_links":{"self":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/1485","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/comments?post=1485"}],"version-history":[{"count":3,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/1485\/revisions"}],"predecessor-version":[{"id":12997,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/1485\/revisions\/12997"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media\/12995"}],"wp:attachment":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media?parent=1485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/categories?post=1485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/tags?post=1485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}