Inqubo idatha ukunciphisa umthamo yayo

Namuhla, abantu abaningi bacabanga okukhulu ngendawo idatha inqubo ukuze asindise kanzima sediski, ke ingenye ukusetshenziswa ngendlela efanele isikhala esibalulekile kunoma iyiphi idivayisi USB. Kaningi, nabasebenzisi abathuthukile abhekene yokuntuleka isikhala kwi drive yakho, kubalulekile ukususa noma iyiphi idatha ngomzamo ukukhulula endaweni efanele, kuyilapho abasebenzisi eziphambili kaningi zisebenzisa idatha ukuze kuncishiswe umthamo yayo.

Nokho, abaningi alazi igama inqubo kokucindezelwa ulwazi, ingasaphathwa lokho algorithm asetshenziswa, futhi enikeza isicelo ngamunye wabo.

Kungakhathaliseki cindezela idatha?

Idatha kubalulekile ngokwanele ukuba uphole nothile, futhi kubalulekile kunoma yimuphi umsebenzisi. Yiqiniso, namuhla cishe wonke umuntu angayisebenzisa ukuthenga eziphambili isitoreji idatha, ukuhlinzeka kungenzeka ngokusebenzisa imali ngokwanele ezinkulu yesikhala samahhala, futhi ifakwe iziteshi ngesivinini idatha ukusakaza.

Nokho, kufanele kahle waqonda nokuthi ivolumu idatha kufanele idluliselwe futhi kwandisa ngokuhamba kwesikhathi. Futhi uma eminyakeni eyishumi nje edlule, indinganiso ifilimu ezivamile wawubhekwa njengendawo ivolumu 700MB, amafilimu usuku, wenza ku-HD-izinga, ungase ube ivolumu elilingana amashumi amaningana gigabytes, ingasaphathwa kangakanani isikhala kuhlala eliphezulu izithombe e Blu-ray format.

Lapho kwedatha kuyadingeka?

Yiqiniso, umuntu akufanele alindele ukuthi ngaso sonke inqubo kwedatha kuyokulethela izinzuzo eziningi, kodwa kukhona inani elithile izimo lapho ezinye amasu kwedatha ziwusizo kakhulu, futhi empeleni kuyadingeka:

• Dlulisa kwemibhalo ethile nge e-mail. Lokhu kuyiqiniso ikakhulukazi kulabo izimo lapho udinga ukuba idlulisele ukwaziswa ngezinga elikhulu, usebenzisa ezihlukahlukene kumadivayisi eselula.
• Ngokuvamile inqubo kwedatha ukuze kuncishiswe isikhala matasa isetshenziswa ukuba zinyatheliswe emaphephandabeni idatha ethile kumasayithi ezihlukahlukene ezidinga londoloza komkhawulokudonsa;
• Igcina isikhala kwi-hard drive yakho uma kwenzeka ukuthi akunakwenzeka ukuba esikhundleni noma wengeze izakhiwo ezintsha USB. Ikakhulukazi, isimo ezivamile wukuthi uma kukhona ukulinganiselwa ezithile e isabelomali iyatholakala, kodwa anisuthi sediski.

Yiqiniso, ngaphezu okungenhla, kukhona eziningi ezimweni ezehlukene ukuthi kungadinga idatha inqubo ukuze kuncishiswe umthamo yayo, kodwa lawa ezivamile namuhla.

Ngingayithola kanjani cindezela idatha?

Namuhla, kunamabandla ezihlukahlukene izindlela kwedatha, kodwa zihlukaniswe amaqembu amabili ayinhloko - lokhu kokucindezelwa nge ukulahlekelwa ezithile, kanye lossless zlib.

Ukusetshenziswa qembu lakamuva izindlela lubalulekile uma idatha kufanele libuyiselwe ngobuciko eliphezulu kakhulu, kuze kube omunye kancane. Le ndlela efanele kuphela esimweni lapho kokucindezelwa wenziwa kusukela idokhumenti umbhalo.

Kuyaphawuleka ukuthi kwezinye izimo asikho isidingo ekwakhiweni inembe kakhulu kunazo zonke idatha onomfutho ngakho sihlinzekela ukusetshenziswa algorithm ezinjalo, lapho kokucindezelwa disk idatha Kwenziwa ukulahlekelwa okuthile. Buhle kokucindezelwa skrini esingaqinile wukuthi lo mshini kulula ukuba kusebenze kakhulu, futhi inikeza ngezinga eliphakeme okungenzeka yomlando.

kokucindezelwa skrini esingaqinile

Algorithms idatha nge ukulahlekelwa ukunikeza umyalelo ezidlula kokucindezelwa kangcono ngenkathi sigcina ngolwazi olwanele izinga. Ezimweni eziningi, ukusetshenziswa algorithm enjalo wenziwa cindezela idatha analog, ezifana zonke izinhlobo izithombe noma imisindo. Ezimweni ezinjalo, amafayela ekhishwe kungase zihluke kakhulu ulwazi yokuqala, kodwa iso noma endlebeni yomuntu cishe izakhamuzi zaseBosnia zifana.

esingaqinile

Kokucindezela algorithm Imininingwane lossless ukunikeza inembe kunazo yokutakula idatha, precluding nanoma ikuphi ukulahleka amafayela onomfutho. Nokho, kubalulekile ukuba ukuqonde yokuthi kuleli cala inqobo hhayi njengoba ifayela kokucindezelwa ngempumelelo.

izindlela Universal

Ngaphezu kwalokho, kukhona inombolo ethile izindlela jikelele, okwakwenza ngempumelelo idatha inqubo ukunciphisa isikhala elalihlala ke. Ngokuvamile, ungase ukhethe zonke ubuchwepheshe ezintathu eziyinhloko:

• Guqula ekusakazeni. Kulokhu, kuncazelo engenayo idatha entsha uncompressed ngokusebenzisa amafayela seyihleliwe, ukubala hhayi kwenziwe yimuphi amathuba, futhi buqonda amatshwayo ngesisekelo kuphela labo amafayela sezibekwe imithi ethize.
• kokucindezelwa ezibalo. Lokhu kokucindezelwa inqubo idatha ukunciphisa lithathe sediski kwasakazwa ku nezigatshana ezimbili - izindlela oluhambelana Modular. inketho eguquguqukayo inikeza ukubala we kwenzeke ngoba amafayela amasha ku ulwazi esicubungulwayo enqubeni wekhodi. Ikakhulukazi, izindlela ezinjalo kufanele futhi ufake okuhlukile algorithm ahlukahlukene oluhambelana Shannon-Fano futhi Huffman. Block algorithm inikeza vyschityvanie ahlukene ulwazi ngamunye iyunithi balandela ngokungeza block onomfutho.
• Unit ukuguquka. Imininingwane olungenayo ihlukaniswe yaba amabhlogo eziningana, futhi kamuva kwenzeka ushintsho ebalulekile. Kulokhu, kufanele kuphawulwe ukuthi izindlela ezithile, ikakhulukazi lezo ezingase zisekelwe transposition amayunithi eziningana, ekugcineni kungaholela ekuncipheni okukhulu umthamo idatha onomfutho. Nokho, kungase kudingeke uqonde kahle ukuthi ngemva le ndlela yokwelapha, ekugcineni kukhona ekwenteni ncono isakhiwo idatha, lapho ngokuziphatha kokucindezelwa okwalandela ngamanye algorithm lwenteke okuningi ngokushesha futhi kalula.

Kokucindezela lapho yokukopisha

Enye yezingxenye ezibaluleke kakhulu kubhekhaphu yidivayisi ngawo ukuhambisa ulwazi lomsebenzisi edingekayo. Idatha uyokubona ukuhambisa, ivolumu ngaphezulu kudivayisi uzodinga ukusebenzisa. Nokho, uma une kokucindezelwa idatha inqubo oyokwenziwa ke inkinga yokungabi isikhala akunakwenzeka ukuba abantu bahlale bemazi ngawe.

Kungani na?

The kungenzeka idatha phakathi izipele kungaba kakhulu ukunciphisa isikhathi kuyodingeka ukukopisha amafayela ezidingekayo, futhi ngesikhathi esifanayo ukufeza kahle ukonga isikhala khulula kwi drive. Ngamanye amazwi, uma usebenzisa ulwazi kokucindezelwa azokopishwa a okuningi icwecwe futhi ngokushesha, futhi ungagcina imali yakho futhi izimali, okuyinto eyayidingeka ukuze ukuthenga umthamo isitoreji esiningi. Phakathi kwezinye izinto, enifeza kwedatha, nawe uthathe isikhathi adingekayo ukuthuthwa yonke idatha iseva, noma ukopishe ngenethiwekhi.

Idatha yokucinana isipele engenziwa elilodwa noma amaningi - kulesi simo, konke kuzoncika onjani Uhlelo oyisebenzisayo futhi hlobo luni lwemininingwane onomfutho.

Lapho ekhetha ithuluzi, qiniseka ukubheka kobubanzi hlelo cindezela idatha osikhethile. It kuncike uhlobo lolwazi, lapho kahle kokucindezelwa kwemibhalo umbhalo kungaba ngaphezulu kuka-90%, kanti izithombe kokucindezelwa zizosebenza ngoba hhayi ngaphezulu kuka-5%.