Daniel Hruska Xyoo 2010, Steve Jobs tau zoo siab nthuav tawm lub iPhone 4. Ntxiv nrog rau kev tsim qauv tshiab, nws coj qhov kev daws teeb meem tsis tau pom dua hauv lub xov tooj ntawm tes. Hauv qhov chaw nrog kab pheeb ces kaum ntawm 3,5 ″ (8,89 cm), Apple, lossis theej nws cov khoom muag, tuaj yeem haum rau matrix ntawm pixels nrog qhov ntev ntawm 640 × 960 thiab qhov ceev ntawm cov zaub no yog 326 PPI (pixels ib nti) . Puas yog cov duab zoo tuaj rau Macs thiab?
Ua ntej, cia peb txhais lo lus "Retina zaub". Ntau tus xav tias qhov no tsuas yog qee yam kev lag luam daim ntawv lo uas Apple tsuas yog tsim. Yog thiab tsis yog. Cov kev daws teeb meem siab tau nyob ntawm no txawm tias ua ntej iPhone 4, tab sis lawv tsis tau siv rau hauv cov neeg siv khoom. Piv txwv li, cov lus qhia siv nyob rau hauv hluav taws xob thiab lwm yam kev kho mob, qhov twg txhua qhov chaw thiab nthuav dav hauv cov duab teeb meem, ua tiav cov pixel ceev hauv qhov ntau. 508 rau 750 PPI. Cov nuj nqis no oscillate ntawm qhov txwv ntawm tib neeg lub zeem muag nyob rau hauv "sharpest" cov tib neeg, uas tso cai rau cov kev qhia no tau muab faib ua Chav Kawm I i.e. 1st class displays. Tus nqi tsim khoom ntawm cov vaj huam sib luag zoo li no yog qhov siab heev, yog li peb yuav tsis pom lawv hauv cov khoom siv hluav taws xob rau qee lub sijhawm.
Rov qab mus rau iPhone 4, koj yuav nco qab Apple cov lus thov: "Lub tib neeg retina tsis tuaj yeem paub qhov txawv ntawm ib tus neeg pixels ntawm qhov ntom ntom saum 300 PPI." Tsuas yog ob peb lub lis piam dhau los, lub iPad thib peb tau tshaj tawm nrog ob zaug ntawm cov zaub daws teeb meem piv rau tiam dhau los. Tus thawj 768 × 1024 tau nce mus rau 1536 × 2048. Yog tias peb xav txog cov kab pheeb ces kaum ntawm 9,7 "(22,89 cm), peb tau txais qhov ceev ntawm 264 PPI. Txawm li cas los xij, Apple kuj hais txog cov zaub no ua Retina. Qhov no ua tau li cas thaum ob xyoos dhau los nws tau thov tias qhov siab tshaj 300 PPI xav tau? Tsuas yog. Qhov ntawd 300 PPI tsuas yog siv rau cov xov tooj ntawm tes lossis cov khoom siv nyob rau tib qhov deb ntawm retina li lub xov tooj ntawm tes. Feem ntau, tib neeg tuav lub iPad me ntsis deb ntawm lawv lub qhov muag dua li iPhone.
Yog hais tias peb yuav tsum generalize lub ntsiab lus ntawm "Retina" nyob rau hauv ib co txoj kev, nws yuav zoo li no:"Lub retina zaub yog cov zaub uas cov neeg siv tsis tuaj yeem paub qhov txawv ntawm ib tus pixels." Raws li peb txhua tus paub, peb saib cov duab sib txawv ntawm qhov sib txawv. Peb muaj lub vijtsam loj loj teeb tsa kaum centimeters ntxiv ntawm peb lub taub hau, yog li 300 PPI tsis xav tau los ntxias peb ob lub qhov muag. Ib yam li ntawd, MacBooks pw ntawm lub rooj lossis ntawm ceg tawv me ntsis ze rau lub qhov muag dua li cov saib loj. Peb kuj tuaj yeem xav txog TV thiab lwm yam khoom siv zoo ib yam. Nws tuaj yeem hais tias txhua pawg ntawm cov lus qhia raws li lawv siv yuav tsum muaj qee qhov pixel ceev txwv. Qhov tsuas parameter uas yuav tsum tau ib tug los txiav txim, tsuas yog qhov deb ntawm lub qhov muag mus rau cov zaub. Yog tias koj saib lub ntsiab lus tseem ceeb rau kev nthuav tawm lub iPad tshiab, tej zaum koj yuav tau ntes cov lus piav qhia luv luv los ntawm Phil Schiller.
Raws li tuaj yeem pom, 300 PPI txaus rau lub iPhone nyob ntawm qhov deb ntawm 10 "(kwv yees 25 cm) thiab 264 PPI rau lub iPad ntawm qhov deb ntawm 15" (kwv yees 38 cm). Yog tias cov kev ncua deb tau pom, cov pixels ntawm iPhone thiab iPad yog qhov loj tib yam los ntawm tus neeg saib xyuas qhov pom (lossis me me kom pom). Peb kuj tuaj yeem pom qhov tshwm sim zoo sib xws hauv qhov xwm txheej. Tsis muaj dab tsi tab sis hnub ci dab noj hnub. Lub hli yog 400 lub sij hawm me me dua lub hnub, tab sis tib lub sij hawm nws yog 400 npaug ntawm lub ntiaj teb. Thaum lub sij hawm tag nrho cov dab noj hnub, lub hli tsuas yog npog tag nrho qhov pom ntawm lub hnub. Yog tsis muaj lwm qhov kev xav, peb yuav xav tias ob lub cev no yog tib yam. Txawm li cas los xij, kuv twb dhau los ntawm cov khoom siv hluav taws xob, tab sis tej zaum qhov piv txwv no tau pab koj kom nkag siab qhov teeb meem - qhov teeb meem deb.
TUAW's Richard Gaywood tau khiav nws qhov kev suav, siv tib lub qauv lej ib yam li hauv daim duab los ntawm cov lus tseem ceeb. Txawm hais tias nws kwv yees qhov kev pom deb ntawm nws tus kheej (11 "rau iPhone thiab 16" rau iPad), qhov tseeb no tsis muaj txiaj ntsig rau qhov tshwm sim. Tab sis dab tsi tuaj yeem xav txog yog qhov kev ncua deb ntawm lub qhov muag los ntawm qhov loj heev ntawm 27-nti iMac. Txhua tus neeg hloov kho lawv qhov chaw ua haujlwm rau lawv cov kev xav tau, thiab tib yam yog qhov tseeb ntawm qhov kev ncua deb ntawm lub monitor. Nws yuav tsum yog kwv yees li ib sab caj npab ntev, tab sis dua - ib tug tub hluas ob-meter yeej muaj caj npab ntev dua li tus poj niam me me. Hauv cov lus hauv qab kab lus no, kuv tau hais txog cov kab nrog cov txiaj ntsig ntawm 27-nti iMac, qhov uas koj tuaj yeem pom meej tias qhov deb npaum li cas plays lub luag haujlwm. Ib tug neeg tsis zaum ncaj ntawm lub rooj zaum txhua hnub ntawm lub khoos phis tawj, tab sis nyiam ntsoos nws lub luj tshib ntawm lub rooj, uas tso nws lub taub hau ntawm qhov deb me me ntawm cov zaub.
Dab tsi tuaj yeem nyeem ntxiv los ntawm cov lus saum toj no? Tias yuav luag tag nrho cov kua computers tsis yog qhov phem txawm niaj hnub no. Piv txwv li, cov zaub ntawm 17-nti MacBook Pro tuaj yeem piav qhia tias "retina" ntawm qhov pom qhov deb ntawm 66 cm. Tab sis peb yuav coj lub iMac nrog 27 "screen rau qhov yeeb yam dua. Hauv txoj kev xav, nws tsuas yog txaus los ua kom qhov kev daws teeb meem tsawg dua 3200 × 2000, uas yuav yog qee qhov kev vam meej, tab sis los ntawm qhov kev xav ntawm kev lag luam, nws yog qhov tseeb tsis yog "WOW effect". Ib yam li ntawd, MacBook Air cov lus yuav tsis xav tau kev nce ntxiv ntawm cov pixels.
Tom qab ntawd muaj ib qho kev xaiv ntau dua me ntsis - kev daws teeb meem ob npaug. Nws tau dhau los ntawm iPhone, iPod kov, thiab tsis ntev los no lub iPad. Koj puas xav tau 13-nti MacBook Cua thiab Pro nrog 2560 x 1600 zaub daws teeb meem? Tag nrho cov ntsiab lus GUI yuav nyob twj ywm qhov loj me, tab sis yuav ua kom zoo nkauj. Yuav ua li cas txog iMacs nrog 3840 x 2160 thiab 5120 x 2800 daws teeb meem? Uas suab ntxias heev, puas yog? Kev ceev thiab kev ua tau zoo ntawm cov khoos phis tawj niaj hnub no tau nce ntxiv. Kev sib txuas hauv Is Taws Nem (tsawg kawg hauv tsev) nce mus txog kaum rau ntau pua megabits. SSDs tab tom pib hloov pauv cov hard drives classic, yog li ua kom nrawm nrawm ntawm kev ua haujlwm thiab kev siv. Thiab cov zaub? Tsuas yog siv cov thev naus laus zis tshiab, lawv qhov kev daws teeb meem tseem tsis zoo ib yam rau ntau xyoo. Puas yog tib neeg doomed saib daim duab checkered mus ib txhis? Yeej tsis yog. Peb twb tau tswj kom tshem tawm tus kab mob no hauv cov khoom siv mobile. Logically tam sim no yuav tsum laptop thiab desktop computers kuj tuaj tom ntej.
Ua ntej leej twg cam hais tias qhov no yog pointless thiab niaj hnub kev daws teeb meem yog tag nrho txaus - lawv tsis yog. Yog tias peb li tib neeg tau txaus siab rau lub xeev tam sim no, tej zaum peb yuav tsis tawm ntawm qhov tsua. Ib txwm muaj chaw rau kev txhim kho. Kuv yeej nco ntsoov cov kev tshwm sim tom qab tso tawm ntawm iPhone 4, piv txwv li: "Vim li cas kuv thiaj li xav tau qhov kev daws teeb meem zoo li no hauv kuv lub xov tooj ntawm tes?" Xyaum tsis muaj txiaj ntsig, tab sis daim duab zoo li zoo dua. Thiab qhov ntawd yog lub ntsiab lus. Ua pixels tsis pom thiab coj cov duab npo los ze rau lub ntiaj teb tiag. Qhov ntawd yog qhov tshwm sim ntawm no. Daim duab smoothed zoo li ntau qab ntxiag thiab ntuj rau peb ob lub qhov muag.
Dab tsi yog qhov ploj ntawm Apple los qhia cov lus pom zoo? Ua ntej tshaj plaws, cov panels lawv tus kheej. Ua cov duab nrog kev daws teeb meem ntawm 2560 x 1600, 3840 x 2160 lossis 5120 x 2800 tsis yog qhov teeb meem niaj hnub no. Cov lus nug tseem yog dab tsi lawv cov nqi tsim khoom tam sim no yog dab tsi thiab seb nws puas yuav tsim nyog rau Apple rau nruab xws li cov vaj huam sib luag kim uas twb muaj lawm xyoo no. Ib tiam tshiab ntawm processors Ive Choj nws twb npaj txhij rau cov lus qhia nrog kev daws teeb meem ntawm 2560 × 1600. Apple twb muaj lub zog xav tau los ua haujlwm retina cov lus, yam tsawg kawg li MacBooks muaj kev txhawj xeeb.
Nrog ob zaug qhov kev daws teeb meem, peb tuaj yeem xav tias ob zaug ntawm kev siv lub zog, ib yam li iPad tshiab. MacBooks tau khav theeb lub zog ruaj khov rau ntau xyoo, thiab Apple yeej yuav tsis tso tseg txoj cai no yav tom ntej. Txoj kev daws teeb meem yog kom txo qis kev noj cov khoom siv sab hauv, tab sis qhov tseem ceeb tshaj plaws - kom muaj peev xwm ntawm cov roj teeb. Qhov teeb meem no kuj zoo li yuav daws tau. Lub iPad tshiab suav nrog lub roj teeb, uas muaj yuav luag tib lub cev qhov ntev li iPad 2 roj teeb thiab muaj peev xwm ntau dua 70%. Nws tuaj yeem xav tias Apple tseem yuav xav muab nws rau hauv lwm cov khoom siv txawb.
Peb twb muaj cov cuab yeej tsim nyog, ua li cas txog software? Txhawm rau kom cov ntawv thov saib zoo dua ntawm cov kev daws teeb meem siab dua, lawv yuav tsum tau hloov kho me ntsis. Ob peb lub hlis dhau los, Xcode thiab OS X Lion beta versions tau pom cov cim qhia txog kev tuaj txog ntawm retina. Nyob rau hauv lub qhov rais dialog yooj yim, nws tau mus qhib qhov hu ua "HiDPI hom", uas ua rau ob npaug rau qhov kev daws teeb meem. Tau kawg, tus neeg siv tsis tuaj yeem soj ntsuam ib qho kev hloov pauv ntawm cov lus qhia tam sim no, tab sis qhov no muaj peev xwm qhia tau tias Apple tab tom sim MacBook prototypes nrog cov duab retina. Tom qab ntawd, tau kawg, cov neeg tsim khoom ntawm cov ntawv thov thib peb lawv tus kheej yuav tsum tuaj thiab ntxiv rau lawv cov haujlwm hloov kho.
Koj xav li cas txog cov duab zoo? Kuv tus kheej ntseeg tias lawv lub sijhawm yuav muaj tseeb. Xyoo no, kuv tuaj yeem xav txog MacBook Cua thiab Pro nrog qhov kev daws teeb meem ntawm 2560 x 1600. Tsis tsuas yog lawv yuav yooj yim dua rau kev tsim dua li 27-nti monsters, tab sis qhov tseem ceeb tshaj plaws lawv tsim cov khoom loj tshaj plaws ntawm Apple computers muag. MacBooks nrog cov duab retina yuav sawv cev rau kev dhia loj ua ntej ntawm kev sib tw. Qhov tseeb, lawv yuav dhau los ua unbeatable kiag li rau lub sijhawm.
Tsab ntawv zoo kawg nkaus! Puas tau txij li thaum kuv tau txais iPhone 4, nws tau mob siab rau saib cov rasters tag nrho. Ntawm kuv MacBook, 1280x800 yog qhov nyuaj siab heev. Thaum kuv muaj lub log ceeb toom rau email lossis hloov tshiab hauv lub khw app ntawm lub chaw nres nkoj, kuv tsis tuaj yeem paub tseeb tias tus lej nws yog dab tsi - tus lej "4" ua los ntawm 10 pixels tsis tshua paub. Retina cov lus qhia ntawm MacBooks yuav yog qhov loj thiab, qhov tseem ceeb tshaj plaws, kev nce qib tsim nyog, uas kuv tab tom tos.
Kuv pom zoo kiag li. Ntawm kuv 24 ″ saib nrog FullHD daws teeb meem, cov paib kuj tseem sketchy thiab qee zaum kuv yuav tsum twv tus lej.
"Lub iPad tshiab muaj lub roj teeb uas yuav luag tib lub cev qhov ntev ..." yuav tsum tsis muaj qhov "lub cev" ntau dua?
Tau kawg, ua tsaug rau lub taub hau.
Kuv tsis xav khawb, tab sis tsis muaj ib qho ntawm cov khoom siv tau hais muaj qhov daws teeb meem ntawm 4x, tab sis tsuas yog 2x. Yog tias nws yog 4x, lub ipad tshiab muaj 4096 × 3072, uas yuav zoo, tab sis qhov tseeb nws muaj kev daws teeb meem. 2x siab dua qhov qub, nrog rau iPhone thiab iPod kov. Txwv tsis pub, kuv ntseeg tias Apple yuav los nrog qhov no, piv txwv li yog vim li cas vim li cas kuv thiaj yuav 13 "Air thiab tsis yog Pro vim huab cua muaj cov zaub zoo dua.
Koj tuaj yeem khawb tau, tab sis koj tsis yog. Nws yog coj los ntawm tus naj npawb ntawm pixels - lub qub iPhone 320 x 480 = 153 thiab lub tshiab iPhone 600 x 640 = 960, lub qub ipad 614 x 400 = 1024 760 thiab lub iPad tshiab 7782 x 40 = 2048. ntau zaus. :)
Zoo, tus naj npawb ntawm pixels yog ib yam thiab qhov kev daws teeb meem nws tus kheej yog lwm ;) qhov kev daws teeb meem yog 2x uas thiab Apple nws tus kheej hais li ntawd thiab tus naj npawb ntawm pixels yog 4x uas, tab sis tsab xov xwm tsis meej pem qhov kev daws teeb meem thiab cov pixels thiab qhov ntawd yog. tsis muaj tseeb. Hauv qhov kawg, yog, nws yog rooj plaub uas txhua qhov kev daws teeb meem tau muab ob npaug, yog li qhov kev daws teeb meem tau muab ob npaug rau hauv cov lej (1024 × 2 = 2048 thiab 768 × 2 = 1536 thiab vim tias nws yog 2x yam uas tau nce 2x. , yog li hauv qhov kawg tus naj npawb ntawm pixels yog 2 × 2 uas yog raws li tus lej no suav nrog 1024 × 768 piv txwv li los ntawm kev suav (1024 × 2) x (768 × 2) = X yog tias peb tshem cov khoom daws teeb meem ces X = 4 yog tias tsis X = 3,1MPix) lawv feem ntau yuam kev ntawm no 2 units, piv txwv li cheeb tsam lossis cheeb tsam sib npaug (ntau ntawm pixels) thiab qhov siab / dav, piv txwv li kev daws teeb meem. Qhov ntawd zoo li dov centimeters thiab square centimeters, tau kawg, yog tias qhov dav thiab qhov siab tau nce 2 zaug, thaj tsam yuav plaub npaug. Yog li koj hais tsis yog lawm.
Yog koj hais yog lawm. Kev daws teeb meem tiag tiag tsis sib npaug ntawm cov pixels.