Ak na telev\u00edzore sledujete filmy alebo telev\u00edzne programy, mo\u017eno ste si v\u0161imli, \u017ee niekedy doch\u00e1dza k efektu trhania, ktor\u00fd sp\u00f4sobuje, \u017ee obraz vyzer\u00e1 neprirodzene, a na lacnej\u0161\u00edch telev\u00edzoroch m\u00f4\u017eete ob\u010das vidie\u0165 mierne rozmazanie obrazu.<\/p>\n\n\n\n
Nemajte obavy, v\u00e1\u0161 telev\u00edzor nie je v poriadku, je to len efekt trhania. M\u00f4\u017eete sa ho pok\u00fasi\u0165 opravi\u0165 a dnes v\u00e1m poviem, ako to urobi\u0165.<\/p>\n\n\n\n
Po\u010fme si teraz poveda\u0165, \u010do je to ruch a \u010do to znamen\u00e1. Tento efekt vznik\u00e1 vtedy, ke\u010f m\u00e1 film alebo in\u00fd obsah menej sn\u00edmok, ako m\u00e1 displej telev\u00edzora.<\/p>\n\n\n\n
Vysvetl\u00edm to na pr\u00edklade. Takmer ka\u017ed\u00fd film m\u00e1 24 sn\u00edmok za sekundu, \u010do znamen\u00e1, \u017ee m\u00e1 24 Hz. V\u00e4\u010d\u0161ina modern\u00fdch telev\u00edzorov m\u00e1 60 Hz obrazovky. To znamen\u00e1, \u017ee telev\u00edzor mus\u00ed prid\u00e1va\u0165 \u010fal\u0161ie sn\u00edmky, aby mohol prehr\u00e1va\u0165 obsah.<\/p>\n\n\n\n
Je to jednoduch\u00e9, telev\u00edzor len duplikuje p\u00f4vodn\u00e9 sn\u00edmky. Je tu v\u0161ak jeden probl\u00e9m – nem\u00f4\u017eete prida\u0165 rovnak\u00fd po\u010det sn\u00edmok ku ka\u017edej sn\u00edmke, preto\u017ee 60 nie je delite\u013en\u00e9 \u010d\u00edslom 24 (resp. ak ho vydel\u00edte, nedostanete cel\u00e9 \u010d\u00edslo). Preto sa v modern\u00fdch telev\u00edzoroch pou\u017e\u00edva technol\u00f3gia 3:2, kde sa niektor\u00e9 sn\u00edmky duplikuj\u00fa 3-kr\u00e1t a niektor\u00e9 len 2-kr\u00e1t.<\/p>\n\n\n\n
V d\u00f4sledku toho sa v\u00e1m m\u00f4\u017ee zda\u0165, \u017ee obraz je pomal\u00fd, preto\u017ee niektor\u00e9 sn\u00edmky trvaj\u00fa 3 sekundy a niektor\u00e9 len 2 sekundy.<\/p>\n\n\n\n
Samozrejme, rozdiel jednej sekundy je zanedbate\u013en\u00fd a vo v\u00e4\u010d\u0161ine pr\u00edpadov si ho nev\u0161imnete. Ak sa v\u0161ak sn\u00edmky vo filme menia ve\u013emi r\u00fdchlo, m\u00f4\u017eete si tento efekt v\u0161imn\u00fa\u0165.<\/p>\n\n\n\n
V telev\u00edzoroch LED doch\u00e1dza k blikaniu obrazu z d\u00f4vodov, ktor\u00e9 som op\u00edsal vy\u0161\u0161ie, a v d\u00f4sledku chyby, ktor\u00e1 je vlastn\u00e1 v\u0161etk\u00fdm telev\u00edzorom LED, zvy\u0161kov\u00e9ho obrazu. Faktom je, \u017ee obrazovky LED maj\u00fa prirodzen\u00fa chybu; pixely obrazovky pozost\u00e1vaj\u00fa z kry\u0161t\u00e1lov, ktor\u00e9 sa ot\u00e1\u010daj\u00fa v bunk\u00e1ch, a polariz\u00e1cia kry\u0161t\u00e1lu sa men\u00ed a prirodzene sa men\u00ed aj sveteln\u00fd tok prech\u00e1dzaj\u00faci kry\u0161t\u00e1lom. Ak sa teda obraz pohne, tie\u0148 obrazu zost\u00e1va tam, kde by nemal by\u0165, preto\u017ee pixely potrebuj\u00fa viac \u010dasu na dosiahnutie spr\u00e1vneho stavu. M\u00f4\u017eete si to v\u0161imn\u00fa\u0165 na obrazovke monitora r\u00fdchlym pohybom my\u0161i; uvid\u00edte nieko\u013eko kurzorov s r\u00f4znou intenzitou. V telev\u00edzoroch rozpo\u010dtovej triedy je takmer nemo\u017en\u00e9 sa s t\u00fdm vysporiada\u0165. Telev\u00edzory vy\u0161\u0161ej triedy pou\u017e\u00edvaj\u00fa na zn\u00ed\u017eenie zvy\u0161kov\u00e9ho obrazu vlo\u017eenie \u010dierneho r\u00e1mu. \u010cierny r\u00e1mik sa vklad\u00e1 vypnut\u00edm podsvietenia, ale funguje len pri videu, ktor\u00e9ho frekvencia je ni\u017e\u0161ia, ako dok\u00e1\u017ee telev\u00edzor zobrazi\u0165. Ak m\u00e1 telev\u00edzor 120 Hz displej a video je 60 Hz, podsvietenie sa vypne na dobu zobrazenia r\u00e1mu. Telev\u00edzor zobraz\u00ed 60 skuto\u010dn\u00fdch sn\u00edmok a 60 \u010diernych sn\u00edmok.<\/p>\n\n\n\n
Existuje nieko\u013eko vec\u00ed, ktor\u00e9 v\u00e1m m\u00f4\u017eu pom\u00f4c\u0165 zbavi\u0165 sa chvenia. Po prv\u00e9, ak v\u00e1\u0161 telev\u00edzor podporuje funkciu True Cinema, m\u00f4\u017eete t\u00fato funkciu aktivova\u0165 a potom sa zbav\u00edte ruchov.<\/p>\n\n\n\n
Ak v\u00e1\u0161 telev\u00edzor podporuje funkcie TruMotion, Clear Motion alebo Motion Smoothing, m\u00f4\u017ee v\u00e1m pom\u00f4c\u0165 aj t\u00e1to mo\u017enos\u0165. Odpor\u00fa\u010dam ju v\u0161ak vypn\u00fa\u0165, preto\u017ee m\u00f4\u017ee vytv\u00e1ra\u0165 \u010fal\u0161\u00ed zl\u00fd efekt naz\u00fdvan\u00fd mydlov\u00e1 opera. Vyhladzovanie pohybu skuto\u010dne vyu\u017e\u00edva technol\u00f3giu naz\u00fdvan\u00fa interpol\u00e1cia pohybu, ktor\u00e1 prid\u00e1va dodato\u010dn\u00e9 sn\u00edmky, aby bol obraz plynulej\u0161\u00ed. M\u00f4\u017ee v\u0161ak sp\u00f4sobi\u0165 efekt mydlovej opery, kv\u00f4li ktor\u00e9mu m\u00f4\u017ee obraz vyzera\u0165 neprirodzene.<\/p>\n\n\n\n
Samozrejme, t\u00e1to technol\u00f3gia neduplikuje len sn\u00edmky, ale vytv\u00e1ra predpoklad o tom, ako by vyzerali susedn\u00e9 sn\u00edmky, keby boli zachyten\u00e9, tak\u017ee nevyvol\u00e1va trhanos\u0165 (ale sk\u00f4r ju zni\u017euje). Vytv\u00e1ra v\u0161ak neprirodzen\u00fd z\u00e1\u017eitok zo sledovania, preto odpor\u00fa\u010dam t\u00fato funkciu vypn\u00fa\u0165.<\/p>\n\n\n\n
Najlep\u0161\u00edm sp\u00f4sobom, ako sa zbavi\u0165 trhan\u00e9ho obrazu, je pou\u017ei\u0165 re\u017eim True Cinema (v r\u00f4znych telev\u00edzoroch sa m\u00f4\u017ee naz\u00fdva\u0165 r\u00f4zne, ale podstata je rovnak\u00e1). Jedin\u00e9, \u010do m\u00f4\u017eete urobi\u0165 pre zlep\u0161enie z\u00e1\u017eitku – nastavte trochu vy\u0161\u0161\u00ed jas, preto\u017ee True Cinema je ur\u010den\u00fd na sledovanie telev\u00edzora bez okolit\u00e9ho svetla.<\/p>\n","protected":false},"excerpt":{"rendered":"
Ak na telev\u00edzore sledujete filmy alebo telev\u00edzne programy, mo\u017eno ste si v\u0161imli, \u017ee niekedy doch\u00e1dza k efektu trhania, ktor\u00fd sp\u00f4sobuje, \u017ee obraz vyzer\u00e1 neprirodzene, a na lacnej\u0161\u00edch telev\u00edzoroch m\u00f4\u017eete ob\u010das vidie\u0165 mierne rozmazanie obrazu. Nemajte obavy, v\u00e1\u0161 telev\u00edzor nie je v poriadku, je to len efekt trhania. M\u00f4\u017eete sa ho pok\u00fasi\u0165 opravi\u0165 a dnes v\u00e1m […]<\/p>\n","protected":false},"author":1,"featured_media":3055,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[86,26],"tags":[21],"class_list":{"0":"post-3054","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-technologia","8":"category-tv","9":"tag-tv"},"_links":{"self":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/3054","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=3054"}],"version-history":[{"count":1,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/3054\/revisions"}],"predecessor-version":[{"id":3056,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/posts\/3054\/revisions\/3056"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media\/3055"}],"wp:attachment":[{"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/media?parent=3054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/categories?post=3054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/global.tab-tv.com\/sk\/wp-json\/wp\/v2\/tags?post=3054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}