
dvimaana kanthika recording

computer daatta sambharanathinayi upayogikkunna haard disk driveukalil (echdidi) 2017 ll avatharippicha saankethikavidyayaanu dvimaana magnetic recording (tdmr). lokathile mikka daattayum echdidikalilaanu rekhappeduthunnathu, koodaathe oru nischitha echdidi phoom-faaktarilum oru nischitha chelavinum kooduthal daatta sambharana sheshi srishtikkaan nirmmaathaakkalkk mail thudarchayaaya sammarddamundu. oru echdiyil, karangunna magnetic diskill magnetic recording upayogichu daatta sambharikkukayum raitt-head, reed-head (allengil reed-element) ennivayiloode axus cheyyukayum cheiyunnu. onno athiladhikamo dattaa tracukalude veendedukkal vardhippikkunnathinu onniladhikam reed-back hedukalil ninnu oresamayam signalukal samyojippichu tdmr kooduthal sambharana sheshi anuvadikkunnu. eee reethiyil, discukalil uyarnna eriyal saandrathayode daatta sambharikkaan kazhiyum, angane oro echdiyilum uyarnna sheshi nalkunnu. tdmr oru "reed-back" saankethikavidyayaanu, athinaal choodu-assisted magnetic recording (hmr), microwave-assisted magnetic recording (mamr) thudangiya bhaavi recording (raitting) saankethikavidyakalkkum ithu orupole baadhakamaan.
avalokanam.
bhaaviyile badal sambharana saankethikavidyakal paryavekshanam cheiyunnathinaayi insikkinu keezhil roopeekaricha oru working groupil ninnaan tdmr sameepanam uyarnnuvannathu. prarambha aashayathil, dattaa trackukal shingled recording srishtichathum ganyamaaya paraspara edapedalukalkku vidheyavumaaya valare idungiya tracukalaanennu anumanikkappettu. reed-headukal oronnum anubandha dattaa trackine kendreekarichullavayaanne anumanikkappettu, koodaathe oru joyint dittaktar oresamayam niravadhi tracukalil ninnu daatta mikacha reethiyil veendedukkum. pii. aarr. emm. ellil ninnulla nettangalkku samaanavum athinupurame trackinu thaazhekku pravarthikkunnathinekkaal tracukaliludaneelam pravartthikkunnathil eee saankethikavidya pii. aarr. emm. ellinu samaanamaayi kaanapettu. thudarnnulla pravartthanangalude thaarathamyena valia body praadhamikamaayi signal prosessinghinte veekshanakonil ninnu eee konfigareshan paryavekshanam cheythu. ennirunnaalum, aduthulla reed-hedukalude oru nira srishtikkunnathinulla saankethika velluviliyum niravadhi tracukalil oresamayam daatta samyukthamaayi kandethunnathinulla sankeernathayum ganyamaanu.
nadappaakkal.
[[fayal tdmr nadappaakkal.jeey. pii. jii|thallaviral|300px|oru uthppannathil tdmrinte aadya nadappaakkal (2017)]]
2017ll emm. tmrc konfaransil fatih erden prakhyaapichu [[seagate teknolaji]|aaa varsham aadyam muthal seagate]] tdmr upayogichu echdikal ayachirunnu. ithinethudarnnu 2018-ll [[vestten digital]], 2019-ll [[toshiba]]. tdmrinte eee yadhaartha aadya nadappaakkalukal valare lalithavum mukalil vibhavanam cheytha saahacharyathil ninnu valare vyathyasthavumaan. nilavile nadappaakkalukal oru reed head upayogichu oru track maathrame veendedukkoo, rund reed-gadakangal onninu mukalil mattonn adukki vaykkunnu (i.iii. dauntraakku cheyyuka) koodaathe sensarukalkkidayil kurachu cross track verthiriv srishtikkunnathinu oru [[rottari aakyuvettar]] upayogathil ninnu undaakunna vakrathaye aashrayikkuka. eee tdmr sameepanam shingled (smr), parambaraagatha [lambamaya kanthika recording] ennivayil prayogikkunnu.|pii. emm. aarr]] echdds. nediya nettangal valare mithamaaya (6 muthal 12 sathamaanam vare) aanenkilum kooduthal sankeernamaaya padhathikal nadappaakkunnathode bhaviyil vardhikkumennu prathekshikkunnu.<bii. aarr.>
aashayathil, reed electronicsil cheria mattamilla, kandethunnathinumbu signal roopappeduthunna eekvalaisarin ippol rund inputtukal undu, avaa uchithamayi opttimais cheyyanam. ennirunnaalum, praayogikamaayi, reed electronicsilum nirmmaana samayat sajjeekarana prakriyayilum ganyamaaya sankeernathayundu. eee sankeernnatha samathvalkkaranathinte opttimaiseshan (tharangaroopa roopeekaranam), chalanathmakamaayi vyathyaasappedunna oof track avasthakalkkulla samaya veendedukkal ennivayumaayi bandhappettirikkunnu-radius anusarichu vyathyaasappedunna vaayanakkar thammilulla cross track offset kooduthal sankeernamaakkunnu. 
rund vaayanakkaaril ninnulla position error signalukalum echdidi servo sisttam upayogikkunnu. angane cheiyunnathu aavarthikkaavunna rauntt kuraykkunnu, prathyekichu vaayanakkaarkk vishalamaaya verthiriv undaakumbol.
paraamarshangal.
[[varggamrotteshan disk computer storeju media|karangunna kanthika disk]]

