{"id":5912,"date":"2025-11-21T00:00:00","date_gmt":"2025-11-20T22:00:00","guid":{"rendered":"https:\/\/elmeistrai.lt\/?p=5912"},"modified":"2025-10-07T15:43:47","modified_gmt":"2025-10-07T12:43:47","slug":"bruksniniu-kodu-skaitymo-sistema","status":"publish","type":"post","link":"https:\/\/elmeistrai.lt\/en\/bruksniniu-kodu-skaitymo-sistema\/","title":{"rendered":"Br\u016bk\u0161nini\u0173 kod\u0173 skaitymo sistema"},"content":{"rendered":"

Kaip atsirado tos juostos ant preki\u0173 pakuo\u010di\u0173<\/h2>\n\n\n\n

Kai \u0161iandien prie kasos greitai prabraukiame prekes pro skaitytuv\u0105 ir girdime t\u0105 pa\u017e\u012fstam\u0105 pyptel\u0117jim\u0105, retai pagalvojame, kokia sud\u0117tinga sistema slypi u\u017e \u0161i\u0173 paprast\u0173 juod\u0173 ir balt\u0173 juosteli\u0173. O juk br\u016bk\u0161niniai kodai visi\u0161kai pakeit\u0117 prekyb\u0105 ir logistik\u0105 per pastaruosius penkis de\u0161imtme\u010dius.<\/p>\n\n\n\n

Viskas prasid\u0117jo 1948 metais, kai Filadelfijos universiteto studentas Bernardas Silveris i\u0161girdo vietinio maisto parduotuvi\u0173 tinklo prezident\u0105 pra\u0161ant\u012f sukurti sistem\u0105, kuri automati\u0161kai nuskaityt\u0173 produkt\u0173 informacij\u0105 prie kasos. Kartu su draugu Normanu Woodlandu jie prad\u0117jo eksperimentuoti. Pirmieji bandymai buvo su koncentriniais apskritimais \u2013 pana\u0161iais \u012f taikin\u012f. Id\u0117ja buvo gera, bet 1940-\u0173j\u0173 technologijos dar nebuvo pasiruo\u0161usios.<\/p>\n\n\n\n

Woodland v\u0117liau persik\u0117l\u0117 dirbti \u012f IBM ir toliau tobulino id\u0117j\u0105. Pra\u0117jo daugiau nei du de\u0161imtme\u010diai, kol 1974 met\u0173 bir\u017eelio 26 dien\u0105 Ohajo valstijoje, Troy mieste, buvo nuskaityta pirmoji prek\u0117 su br\u016bk\u0161niniu kodu \u2013 tai buvo Wrigley kramtomoji guma. Ta istorin\u0117 guma dabar yra i\u0161statyta Smithsonian muziejuje.<\/p>\n\n\n\n

Kod\u0117l juostos skirtingo storio ir kaip jos tampa skai\u010diais<\/h2>\n\n\n\n

Pa\u017evelgus \u012f br\u016bk\u0161nin\u012f kod\u0105, atrodo, kad tai tiesiog chaoti\u0161kos juodos ir baltos linijos. Bet kiekviena juostel\u0117 turi savo prasm\u0119. Standartinis EAN-13 kodas (tai tas, kur\u012f matome ant dauguma preki\u0173 Europoje) susideda i\u0161 13 skai\u010di\u0173, u\u017ekoduot\u0173 skirtingo plo\u010dio juodomis ir baltomis juostel\u0117mis.<\/p>\n\n\n\n

Sistema veikia labai protingai \u2013 skaitytuvas neanalizuoja spalv\u0173, o stebi per\u0117jimus tarp \u0161viesi\u0173 ir tamsi\u0173 zon\u0173. Kai lazerio spindulys juda per kod\u0105, jis atsispindi nuo balt\u0173 zon\u0173 ir sugertas juod\u0173. Fotojautrus elementas fiksuoja \u0161iuos atspind\u017eius ir paver\u010dia juos elektriniais impulsais. Plati juoda juosta gali reik\u0161ti vien\u0105 skai\u010di\u0173, o kelios siauros \u2013 kit\u0105.<\/p>\n\n\n\n

\u012edomiausia, kad br\u016bk\u0161nin\u012f kod\u0105 galima skaityti i\u0161 bet kurios pus\u0117s \u2013 i\u0161 kair\u0117s \u012f de\u0161in\u0119 ar atvirk\u0161\u010diai. Sistema tai atpa\u017e\u012fsta pagal specialius prad\u017eios ir pabaigos simbolius. Tai labai patogu kasoms \u2013 nereikia sukioti prek\u0117s ie\u0161kant tinkamos pad\u0117ties.<\/p>\n\n\n\n

Pirmieji trys skai\u010diai paprastai nurodo \u0161al\u012f, kur registruotas gamintojas (Lietuvai tai 475), kiti keturi-penki identifikuoja pat\u012f gamintoj\u0105, dar keletas \u2013 konkret\u0173 produkt\u0105, o paskutinis skai\u010dius yra kontrolinis. \u0160is kontrolinis skaitmuo apskai\u010diuojamas pagal speciali\u0105 formul\u0119 ir padeda sistemai patikrinti, ar kodas buvo nuskaitytas teisingai.<\/p>\n\n\n\n

Lazeriai, kamer\u0173 ir raudonos \u0161viesos paslaptys<\/h2>\n\n\n\n

Pirmieji br\u016bk\u0161nini\u0173 kod\u0173 skaitytuvai buvo did\u017eiuliai ir brang\u016bs \u012frenginiai. Jie naudojo helio-neono lazerius ir sv\u0117r\u0117 keliolika kilogram\u0173. \u0160iandien technologija pasiek\u0117 tok\u012f lyg\u012f, kad net paprastas i\u0161manusis telefonas gali skaityti br\u016bk\u0161ninius kodus geriau nei profesional\u016bs \u012frenginiai prie\u0161 dvide\u0161imt met\u0173.<\/p>\n\n\n\n

Lazeriniai skaitytuvai veikia i\u0161leisdami labai siauro pluo\u0161to \u0161vies\u0105 \u2013 da\u017eniausiai raudon\u0105, nes fotojautr\u016bs elementai geriausiai reaguoja \u012f \u0161i\u0105 bang\u0173 ilgio dal\u012f, o be to, raudona \u0161viesa ma\u017eiau vargina akis. Lazeris juda per kod\u0105 (arba atspindys nukreipiamas judan\u010diu veidrod\u0117liu), o gr\u012f\u017etanti \u0161viesa analizuojama.<\/p>\n\n\n\n

Naujesni CCD (Charge-Coupled Device) skaitytuvai veikia kaip miniati\u016brin\u0117s kameros. Jie nufotografuoja vis\u0105 kod\u0105 i\u0161 karto ir analizuoja vaizd\u0105. Tai grei\u010diau ir patikimiau, ypa\u010d su pa\u017eeistais ar blogai atspausdintais kodais. Tokie skaitytuvai gali skaityti kodus nuo ekran\u0173 \u2013 pavyzd\u017eiui, elektroninius bilietus telefone.<\/p>\n\n\n\n

Pa\u010dios naujausios sistemos naudoja 2D vaizd\u0173 apdorojim\u0105 ir dirbtin\u012f intelekt\u0105. Jos gali atpa\u017einti ne tik tradicines juostas, bet ir QR kodus, Data Matrix ir kitus dvima\u010dius kodus, kurie talpina daug daugiau informacijos.<\/p>\n\n\n\n

Kai br\u016bk\u0161ninis kodas tampa neregimas<\/h2>\n\n\n\n

Ne visos br\u016bk\u0161nini\u0173 kod\u0173 sistemos atrodo kaip tradicin\u0117s juostos. RFID (Radio-Frequency Identification) technologija leid\u017eia saugoti informacij\u0105 mikroskopiniame lustelyje, kuris gali b\u016bti nuskaitomas be tiesioginio kontakto ar net regimojo lauko. Tai evoliucijos \u017eingsnis \u012f priek\u012f.<\/p>\n\n\n\n

Did\u017eiuosiuose sand\u0117liuose ir logistikos centruose RFID \u017eym\u0117s leid\u017eia sekti t\u016bkstan\u010dius preki\u0173 vienu metu. Pakanka prava\u017eiuoti su ve\u017eim\u0117liu pro speciali\u0105 vartus, ir visos prek\u0117s automati\u0161kai inventorizuojamos. Kai kurios drabu\u017ei\u0173 parduotuv\u0117s jau naudoja \u0161i\u0105 technologij\u0105 \u2013 galite i\u0161eiti su pirkiniais, ir sistema automati\u0161kai nuskaito visk\u0105, kas j\u016bs\u0173 krep\u0161yje.<\/p>\n\n\n\n

Ta\u010diau RFID turi ir tr\u016bkum\u0173. Lustelis kainuoja daugiau nei paprastas atspausdintas kodas, o metalai ir skys\u010diai gali trukdyti signalui. Tod\u0117l tradiciniai br\u016bk\u0161niniai kodai vis dar dominuoja masin\u0117je prekyboje.<\/p>\n\n\n\n

Kod\u0117l kartais skaitytuvas nesuveikia<\/h2>\n\n\n\n

Turb\u016bt visi esame patyr\u0119 t\u0105 nemalon\u0173 moment\u0105, kai kasoje prek\u0117 nesiskaito ir kasininkas turi rankiniu b\u016bdu \u012fvesti kod\u0105. Yra keletas prie\u017eas\u010di\u0173, kod\u0117l taip nutinka.<\/p>\n\n\n\n

Pa\u017eeistas kodas \u2013 jei pakuot\u0117 sulankstytas, subrai\u017eytas ar sudr\u0117kintas, juostos gali b\u016bti i\u0161kreiptos. Sistema nesugeba atpa\u017einti tinkamo \u0161ablono ir atsisako skaityti. Blogai atspausdintas kodas taip pat kelia problem\u0173 \u2013 jei juostos per plonos, per storos ar netolygios, skaitytuvas gali sumai\u0161yti skaitmenis.<\/p>\n\n\n\n

Blizgios pavir\u0161iai atspindi \u0161vies\u0105 netolygiai ir gali apakinti fotojautrius elementus. D\u0117l to ant labai blizgi\u0173 pakuo\u010di\u0173 br\u016bk\u0161ninius kodus stengiamasi spausdinti matiniu laku arba ant speciali\u0173 lipduk\u0173.<\/p>\n\n\n\n

Kampas ir atstumas taip pat svarb\u016bs. Nors \u0161iuolaikiniai skaitytuvai gana atlaid\u016bs, per didelis kampas ar per didelis atstumas gali sukelti problem\u0173. Idealus atstumas lazeriniams skaitytuvams paprastai yra 10-20 centimetr\u0173.<\/p>\n\n\n\n

Jei dirbate sand\u0117lyje ar parduotuv\u0117je ir da\u017enai susiduriate su nesiskaitan\u010diais kodais, patarimas \u2013 pabandykite \u0161iek tiek pakreipti prek\u0119 ar pakeisti atstum\u0105. Kartais padeda net papras\u010diausias pakuot\u0117s nubraukimas \u0161variu audeklu \u2013 nuo dulki\u0173 ar pir\u0161t\u0173 atspaud\u0173.<\/p>\n\n\n\n

Kai viena juosta tampa milijonais duomen\u0173 punkt\u0173<\/h2>\n\n\n\n

Br\u016bk\u0161nini\u0173 kod\u0173 sistema \u2013 tai ne tik skaitytuvas ir juostos. U\u017e j\u0173 slypi mil\u017eini\u0161kos duomen\u0173 baz\u0117s ir sud\u0117tingos valdymo sistemos. Kai kasoje nuskaitomas produktas, vyksta daug daugiau nei paprastas kainos nuskaitymas.<\/p>\n\n\n\n

Sistema i\u0161 karto patikrina atsargas, atnaujina inventori\u0173, gali paleisti automatin\u012f u\u017esakym\u0105 tiek\u0117jui, jei prek\u0117s likutis nukrenta \u017eemiau nustatyto lygio. Tuo pa\u010diu metu informacija gali b\u016bti siun\u010diama \u012f analitikos sistemas, kurios stebi, kokios prek\u0117s populiarios, kokiu metu, kokiose kombinacijose perkamos.<\/p>\n\n\n\n

Did\u017eiosios prekybos tinklai naudoja \u0161iuos duomenis labai i\u0161mintingai. Jie gali numatyti paklaus\u0105, optimizuoti tiekimo grandines, net keisti kainas realiuoju laiku priklausomai nuo \u012fvairi\u0173 faktori\u0173. Tai vadinama „big data” analize, ir br\u016bk\u0161niniai kodai yra vienas pagrindini\u0173 duomen\u0173 \u0161altini\u0173.<\/p>\n\n\n\n

Farmacijos srityje br\u016bk\u0161niniai kodai padeda sekti vaist\u0173 autenti\u0161kum\u0105 ir galiojimo terminus. Kiekvienas vaist\u0173 pakelis turi unikal\u0173 kod\u0105, kuris registruojamas visoje tiekimo grandin\u0117je \u2013 nuo gamintojo iki paciento. Tai padeda kovoti su padirbin\u0117jimais ir u\u017etikrina pacient\u0173 saugum\u0105.<\/p>\n\n\n\n

Ateities kodai jau \u010dia<\/h2>\n\n\n\n

Nors tradiciniai br\u016bk\u0161niniai kodai vis dar puikiai atlieka savo funkcij\u0105, technologijos juda \u012f priek\u012f. QR kodai jau tapo kasdienybe \u2013 juos naudojame mok\u0117jimams, informacijos gavimui, net meniu restorane. Jie gali saugoti \u0161imtus kart\u0173 daugiau informacijos nei paprasti br\u016bk\u0161niniai kodai.<\/p>\n\n\n\n

Data Matrix kodai, kurie atrodo kaip ma\u017ei juodai-balti kvadrat\u0117liai, naudojami ten, kur reikia sutalpinti daug informacijos labai ma\u017eame plote. Juos rasite ant elektronikos komponent\u0173, medicinini\u0173 prietais\u0173, net ant pa\u0161to \u017eenkl\u0173.<\/p>\n\n\n\n

Augmentintos realyb\u0117s technologijos pradeda naudoti br\u016bk\u0161ninius kodus kaip „vartus” \u012f virtual\u0173 turin\u012f. Nuskait\u0119 kod\u0105 telefonu, galite pamatyti 3D produkto model\u012f, instrukcijas, video ap\u017evalgas ar net virtualiai „i\u0161bandyti” prek\u0119 savo namuose.<\/p>\n\n\n\n

Kai kurios \u012fmon\u0117s eksperimentuoja su nematomais br\u016bk\u0161niniais kodais \u2013 jie spausdinami specialiais da\u017eais, matomais tik infraraudon\u0117je \u0161viesoje. Tai apsaugo nuo klastojimo ir leid\u017eia i\u0161saugoti pakuot\u0117s dizain\u0105 \u0161var\u0173, be matom\u0173 kod\u0173.<\/p>\n\n\n\n

Kas nutikt\u0173 be t\u0173 juosteli\u0173<\/h2>\n\n\n\n

Pam\u0117ginkite \u012fsivaizduoti \u0161iuolaikin\u0119 parduotuv\u0119 be br\u016bk\u0161nini\u0173 kod\u0173. Kiekvienos prek\u0117s kain\u0105 reik\u0117t\u0173 \u012fvesti rankiniu b\u016bdu. Inventorizacija u\u017etrukt\u0173 ne valandas, o dienas. Klaidos b\u016bt\u0173 nei\u0161vengiamos ir da\u017enos. Eil\u0117s prie kas\u0173 t\u0119st\u0173si am\u017einai.<\/p>\n\n\n\n

Br\u016bk\u0161niniai kodai tapo neregima infrastrukt\u016bra, kuri palaiko \u0161iuolaikin\u0119 prekyb\u0105 ir logistik\u0105. Jie leid\u017eia sekti milijardus preki\u0173 judant per pasaul\u012f \u2013 nuo gamyklos Kinijoje iki j\u016bs\u0173 nam\u0173 dur\u0173. Jie padeda u\u017etikrinti, kad vaistai b\u016bt\u0173 autenti\u0161ki, maistas \u0161vie\u017eias, o tiekimo grandin\u0117s efektyvios.<\/p>\n\n\n\n

\u0160i technologija, kuri prasid\u0117jo nuo paprasto studento noro palengvinti kas\u0173 darb\u0105, tapo vienu svarbiausi\u0173 XX am\u017eiaus i\u0161radim\u0173. Ji parod\u0117, kaip paprasta id\u0117ja \u2013 paversti informacij\u0105 vizualiu kodu \u2013 gali transformuoti visas pramon\u0117s \u0161akas.<\/p>\n\n\n\n

Taigi kit\u0105 kart\u0105, kai i\u0161girsite t\u0105 pyptel\u0117jim\u0105 prie kasos, prisiminkite \u2013 tai ne tik kaina nuskaitoma. Tai duomen\u0173 srautas, keliaujantis per sistemas, atnaujinantis atsargas, analizuojantis tendencijas ir padedantis palaikyti mil\u017eini\u0161k\u0105 pasaulin\u0117s prekybos ma\u0161in\u0105 veikian\u010di\u0105 skland\u017eiai. Tos paprastos juodos ir baltos juostel\u0117s yra daug protingesn\u0117s, nei atrodo i\u0161 pirmo \u017evilgsnio.<\/p>","protected":false},"excerpt":{"rendered":"

Kaip atsirado tos juostos ant preki\u0173 pakuo\u010di\u0173 Kai \u0161iandien prie kasos greitai prabraukiame prekes pro skaitytuv\u0105 ir girdime t\u0105 pa\u017e\u012fstam\u0105…<\/p>","protected":false},"author":1,"featured_media":6058,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[15,17,16,7],"tags":[],"class_list":["post-5912","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kompiuteriu-remontas-kaune","category-kompiuteriu-remontas-klaipedoje","category-kompiuteriu-remontas-vilniuje","category-kompiuteriu-remontas-kompiuteriai-naujienos-patarimai","wpcat-15-id","wpcat-17-id","wpcat-16-id","wpcat-7-id"],"yoast_head":"\nBr\u016bk\u0161nini\u0173 kod\u0173 skaitymo sistema<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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