kompiuteris periferiuli mowyobilobebi

personaluri kompiuteri CD-i kompaqt-diskebs
ver kiTxulobs. Tumca damuSavebulia specialuri
draiverebi, romelTa gamoyenebiTac kompiuters CD-i
failebis wakiTxva SeuZlia.
amJamad CD-i standarti moZvelebulia.
CD-ROM XA
standarti CD-ROM-XA gamoqveynebuli iqna Sony,
Philips da Microsoft kompaniebis mier 1989 wels. CD-XA
warmoadgens Yellow book standartis damatebas.
CD-ROM XA standartis mixedviT Yellow book
standarts Green book standartiT gansazRvruli sami
funqcia daemata:
• audio da videomonacemebis monacvleoba;
• Mode 2 seqtorebis gansazRvris gafarToeba;
• audiomonacemebis SekumSvis standarti _ ADPCM.
fragmentebis monacvleoba
CD-ROM XA standartis damgroveblebi monacvleobiT
(interleaving) meTods iyeneben. XA standartis
mixedviT Caweril diskebSi TanmimdevrobiTaa ganlagebuli
iseTi fragmentebi, romlebic gansxvavebuli
bunebis informacias Seicavs. yoveli fragmentis dasawyisSi
specialuri kodi iwereba, romlis mixedviTac
damgrovebeli gansazRvravs, Tu monacemebis
romeli tipia (audio, teqsturi, grafikuli) Cawerili
mimdinare seqtorSi. fragmentebis Tanmimdevroba
SeiZleba nebismieri iyos.
163
miuxedavad imisa, rom monacemebi sxvadasxva
seqtorebidan araerTdroulad ikiTxeba, momxmarebels
isini sinqronulad miewodeba, rogorc kompaqtdiskis
avtorebis mier aris gansazRvruli.
seqtorebis reJimebi da formebi
reJimi 1 (Mode 1) Yellow book standartis seqtoris
formatia. seqtori ECC da EDC kodebs Seicavs,
rac sistemis uSecdomo muSaobas uzrunvelyofs.
cxrilSi 5.5 warmodgenilia Mode 1 seqtoris formati.
Mode 1 seqtoris formati
164
cxrili 5.5
luwobaze kontrolis baitebi Q da P 784
qvekodis baitebi 98
sinqronizaciis baitebi 12
saTauris baitebi 4
monacemTa baitebi 2048
EDC baitebi 4
carieli baitebi 8
ECC baitebi 276
baitebis saerTo raodenoba seqtorSi 3234
originaluri Yellow book standartis mixedviT
reJimi 2 (Mode 2) seqtorSi Secdomebis koreqciis
EDC da EDC kodebis arsebobas ar iTvaliswinebs,
xolo erT audio, an sainformacio kompaqt-diskze
Mode 1 da Mode 2 reJimebis monacvleobiTi gamoyeneba
SeuZlebelia.