Philips player prototype, Elektuur magazine No. 188, Lub Rau Hli 1979,
Lub compact disc yog 40 xyoo, thiab rau cov neeg ntawm peb uas nco ntsoov nws pib li cas, nws tseem yog ib tug enigmatic kev ua tau zoo ntawm high technology txawm tias qhov nruab nrab tau raug thawb ib sab los ntawm kev tawm tsam ntawm cov kev pabcuam streaming.
Yog tias koj tau teeb tsa los txheeb xyuas lub sijhawm thaum cov thev naus laus zis digital pib hloov pauv cov thev naus laus zis analog hauv cov khoom siv hluav taws xob, nws yuav zoo li cov tsos ntawm CD. Nyob rau hauv nruab nrab-seventies, cov khoom siv hluav taws xob uas xav tau tshaj plaws yog analog video recorder thiab CB xov tooj cua, tab sis nrog kev tso tawm ntawm thawj lub tsev computers thiab laser players, kev npau suav ntawm cov uas siv zog ua "nyob rau saum nthwv dej" dheev hloov pauv. . Lub CD player tau dhau los ua thawj lub tsev siv hluav taws xob uas muaj, txawm tias me me, lub laser tiag tiag, uas tom qab ntawd zoo li ib yam dab tsi zoo heev, zoo, tsuas yog tsis muaj tseeb. Niaj hnub no, cov thev naus laus zis tshiab nkag mus rau hauv kev ua lag luam tsis tsim cov txiaj ntsig zoo li no: lawv raug saib raws li ib yam dab tsi tshwm sim thiab ploj mus "hauv nws txoj kev."
Nws tuaj qhov twg?
Cov hom ntawv "sab ceg" loj hlob los ntawm cov txheej txheem kaw cov yeeb yaj kiab tshiab rau lub sijhawm ntawd, uas cov neeg tsim khoom kuj nrhiav kev hloov kho rau cov suab kaw suab zoo. Sony tau sim hloov kho lub tshuab kaw suab rau digital suab kaw, thiab Philips sim kaw suab hauv analog daim ntawv ntawm optical discs, zoo ib yam li cov uas twb tau siv los khaws cov yeeb yaj kiab. Tom qab ntawd cov kws tshaj lij los ntawm ob lub tuam txhab tuaj yeem txiav txim siab tias nws yog qhov zoo dua los sau rau ntawm qhov muag pom, tab sis hauv daim ntawv digital. Niaj hnub no qhov no "tab sis" zoo li nws tus kheej, tab sis rov qab los nws tsis tau pom tam sim ntawd. Tom qab tsim ob hom ntawv tsis sib xws tab sis zoo sib xws, Sony thiab Philips pib sib koom tes, thiab los ntawm 1979 lawv tau qhia cov qauv ntawm tus neeg uas ua ntawv thiab 120mm disc uas muaj ntau tshaj li ib teev ntawm 16-ntsis lub tso suab suab ntawm qhov piv txwv ntawm 44,1 kHz. Nyob rau hauv cov ntaub ntawv kev tshawb fawb nrov thiab cov ntawv xov xwm, cov thev naus laus zis tshiab tau raug ntaus nqi zoo kawg futurism, exaggerating nws lub peev xwm. TV qhia tau cog lus tias cov discs no yuav "tsis muaj kev puas tsuaj" piv rau cov ntaub ntawv yas, uas ua rau muaj kev txaus siab ntxiv rau lawv. Lub Philips sab saum toj-loading neeg uas ua ntawv, sparkling nrog ib tug silver casing, saib amazing, tab sis thawj cov qauv ntawm cov khoom no ntaus lub khw txee xwb nyob rau hauv 1982.
Nws ua haujlwm li cas?
Txawm hais tias cov neeg siv xav tias lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm CD player yog qhov nyuaj heev thiab tsis nkag siab, qhov tseeb, txhua yam yog qhov xav tsis thoob uas yooj yim thiab meej. Tshwj xeeb tshaj yog piv rau cov analog VCRs uas ntau tus players zaum ntawm ib sab. Thaum kawg ntawm lub yim caum, siv cov piv txwv ntawm PCD ntaus ntawv, lawv txawm piav qhia ntau yam ntsiab lus rau yav tom ntej electronics engineers. Lub sijhawm ntawd, ntau tus twb paub tias hom ntawv no yog dab tsi, tab sis tsis yog txhua tus tuaj yeem them taus yuav tus neeg ua si zoo li no.
Lub taub hau nyeem ntawm CD tsav muaj qee qhov xav tsis thoob. Lub module, uas muaj xws li ob qho tib si qhov chaw thiab lub receiver, yog tsiv los ntawm ib tug me me hluav taws xob lub cev muaj zog los ntawm ib tug cab iav. Lub IR laser ci ntsa iab rau hauv lub prism uas qhia txog lub teeb ntawm lub kaum sab xis ntawm 90 Β°. Lub lens tsom nws, thiab tom qab ntawd nws, rov qab los ntawm lub disk, rov qab los ntawm tib lub lens rau hauv lub prism, tab sis lub sij hawm no nws tsis hloov nws cov kev taw qhia thiab mus txog ib tug array ntawm plaub photodiodes. Lub ntsiab mechanism muaj ib tug hlau nplaum thiab windings. Nrog rau kev taug qab kom zoo thiab tsom ntsoov, qhov kev siv hluav taws xob siab tshaj plaws tau ua tiav nyob rau hauv nruab nrab ntawm cov array; kev ua txhaum ntawm kev taug qab ua rau muaj kev hloov pauv ntawm qhov chaw, thiab kev ua txhaum ntawm kev tsom xam ua rau nws nthuav dav. Automation kho txoj hauj lwm ntawm lub taub hau nyeem ntawv, ua kom pom tseeb thiab ceev, kom cov zis yog ib qho analog teeb liab, los ntawm cov ntaub ntawv digital tuaj yeem muab rho tawm ntawm qhov xav tau ceev.
Kev nyeem lub taub hau nrog cov lus piav qhia,
Cov khoom sib xyaw ua ke rau hauv cov thav ntawv, uas hloov kho tau siv thaum kaw , uas tso cai rau koj kom tsis txhob muaj ib qho xoom thiab ib qho, piv txwv li, qhov sib lawv liag 000100010010000100 dhau los ua 111000011100000111. Tom qab dhau cov thav ntawv los ntawm lub rooj saib, 16-ntsis cov ntaub ntawv kwj tau txais, tau txais Reed-Solomon kho thiab kho AC. Txawm hais tias cov tuam txhab sib txawv tau ua ntau yam kev txhim kho rau cov kab ke no ntau xyoo ntawm cov qauv muaj nyob, qhov tseem ceeb ntawm cov cuab yeej tseem yog ib qho yooj yim kho qhov muag-hluav taws xob chav tsev.
Ua li cas rau nws thaum ntawd?
Nyob rau hauv lub nineties, hom ntawv tig los ntawm zoo heev thiab muaj koob meej mus rau loj. Cov neeg ua si tau dhau los ua pheej yig dua, thiab cov qauv portable tau nkag mus rau hauv kev ua lag luam. Disc players pib tshem cov cassette players los ntawm hnab ris. Tib yam tshwm sim nrog CD-ROMs, thiab nyob rau hauv lub thib ob ib nrab ntawm lub nineties nws yog ib qho nyuaj rau xav txog tej yam ib tug tshiab PC tsis muaj CD tsav thiab ib tug multimedia encyclopedia suav nrog. Lub Vist 1000HM tsis muaj qhov tshwj xeeb - lub khoos phis tawj stylish nrog cov neeg hais lus sib xyaw ua ke rau hauv lub monitor, VHF receiver thiab compact IR keyboard nrog lub joystick built-in, nco txog lub chaw taws teeb loj loj rau lub chaw suab paj nruag. Feem ntau, nws qw nrog tag nrho nws cov tsos tias nws qhov chaw tsis yog nyob rau hauv lub chaw ua hauj lwm, tab sis nyob rau hauv lub chav tsev nyob, thiab nws twb nteg thov mus rau qhov chaw nyob ntawm lub suab paj nruag center. Nws tau nrog lub disc los ntawm pab pawg Nautilus Pompilius nrog cov ntaub ntawv hauv plaub-ntsis monophonic WAV cov ntaub ntawv uas siv qhov chaw me me. Kuj tseem muaj cov cuab yeej tshwj xeeb uas siv CDs ua cov ntaub ntawv nruab nrab, piv txwv li, Philips CD-i thiab Commodore Amiga CDTV, nrog rau Video CD players, Sega Mega CD ntaus ntawv rau Mega Drive / Chiv Keeb consoles, 3DO consoles thiab Play Chaw nres tsheb (thawj heev) ...
Commodore Amiga CDTV, UA
Lub computer Vist Black Jack II, uas zoo li tsis txawv ntawm Vist 1000HM,
Thiab thaum lwm tus, ua raws li cov neeg nplua nuj, tau paub txog txhua yam no, lub ntsiab lus tshiab yog nyob rau hauv cov txheej txheem: muaj peev xwm sau CDs hauv tsev. Nws hnov ββtsw zoo li science ntawv tseeb dua. Ob peb tus tswv zoo siab ntawm lub tshuab hluav taws xob tau sim them rau lawv los ntawm kev tshaj tawm kev tshaj tawm: "Kuv yuav ua ib qho thaub qab ntawm koj lub hard drive rau CD, pheej yig." Qhov no coincided nrog lub advent ntawm lub compressed suab hom MP3, thiab thawj MPMan thiab pob zeb Diamond Rio players raug tso tawm. Tab sis lawv siv lub cim xeeb kim heev thaum lub sijhawm ntawd, tab sis Lenoxx MP-786 CD tau dhau los ua qhov ntaus tiag tiag - thiab nws zoo kawg nkaus nyeem ob qho tib si tus kheej sau thiab npaj ua tiav nrog cov ntaub ntawv MP3. Napster thiab cov peev txheej zoo sib xws sai sai poob rau cov neeg raug tsim txom los sau cov tuam txhab, leej twg, txawm li cas los xij, tau ib txhij pom cov qauv tshiab. Ib qho ntawm thawj daim ntawv tso cai MP3 discs tau tso tawm los ntawm pab pawg "Crematorium", thiab feem ntau nws tau mloog ntawm cov neeg ua si no. Thiab tus neeg txhais lus txawm tias ib zaug muaj caij nyoog nce mus rau hauv ib qho ntawm cov players no thiab kho qhov tsis xws luag uas ua rau lub disc kov lub hau. Kua tso tawm thawj iPods, uas ua rau nws muaj peev xwm mus yuav albums los ntawm ib tug yooj yim interface ntawm lub computer screen, prompted music publishers kom thaum kawg txav los ntawm kev sib ntaus sib tua compressed suab tawm tswv yim rau extracting coj mus muag cov txiaj ntsig los ntawm lawv. Tom qab ntawd lub xov tooj smartphone yuav luag tso ib tus neeg siv MP3 tawm ntawm kev siv txawm tias sai dua li lawv tau hloov pauv CDs yav dhau los, thaum cov ntaub ntawv yas thiab cov ntaub ntawv tam sim no tau rov ua dua. Puas yog CD tuag lawm? Tej zaum tsis yog, txij li kev tsim tawm ntawm ob qho tib si drives thiab media tsis tau tso tseg kiag li. Thiab nws muaj peev xwm hais tias ib tug tshiab nthwv dej ntawm nostalgia yuav revive hom ntawv no.
Tau qhov twg los: www.hab.com