blu+ray+disc+seminar

8/9/2019 Blu+Ray+Disc+Seminar

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SeminarSeminaronon

BluBlu--ray Discray DiscOctober 11, 2008October 11, 2008

Er. Rajesh KumarEr. Rajesh Kumar

M.Tech (ECE)M.Tech (ECE)


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EvolutionEvolution

Courtesy Blu-ray Disc Founders Blu-ray Disc Format White Paper

VHS: analogVHS: analogDVD: digitalDVD: digitalBD: highBD: high--definitiondefinition

Enables recording,Enables recording,

rewriting, andrewriting, andplayback of highplayback of high--definition videodefinition video

Capable of storingCapable of storinginformation that theinformation that theDVD and CD are notDVD and CD are notcapable of holdingcapable of holding


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FoundationFoundation

BluBlu--rayray discdisc (BD)(BD) isis appropriatelyappropriately namednamedafterafter thethe blueblue laserlaser usedused toto writewrite thethe datadata

TheThe firstfirst blueblue laserlaser waswas developeddeveloped inin 19961996

byby ShujiShuji NakamuraNakamura (Nichia(Nichia Corporation)Corporation) InIn 20022002,, anan alliancealliance waswas formed,formed, calledcalled thethe

BluBlu--rayray DiscDisc Association, Association, includingincluding thethelikeslikes ofof Sony,Sony, Samsung,Samsung, Sharp,Sharp, HewlettHewlett--Packard,Packard, andand RoyalRoyal PhillipsPhillips

TheThe ee isis intentionallyintentionally leftleft outout ofof thethe namenameduedue toto trademarktrademark restrictionsrestrictions


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Disc CharacteristicsDisc Characteristics

Single layer: 25 GBSingle layer: 25 GBDual layer: 50 GBDual layer: 50 GB

Diameter: 120 mmDiameter: 120 mm

Thickness: 1.2 mmThickness: 1.2 mm

Center holeCenter holediameter: 15 mmdiameter: 15 mm

Uses GaN laser ofUses GaN laser ofwavelength 400 nmwavelength 400 nm

The smaller laser,The smaller laser,compared to thecompared to theDVD and CD, keepsDVD and CD, keepsthe process morethe process moreefficient (~5 mW)efficient (~5 mW)



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Disc Characteristics(conti.)Disc Characteristics(conti.)


The powerThe powerconservation allowsconservation allowsthe development ofthe development ofmultimulti--layerlayer

platforms and highplatforms and high--speed recording.speed recording.

BDBD--ROM: readROM: read--onlyonlyformat.format.

BDBD--R and BDR and BD--RE:RE:recordable formatsrecordable formats(RE: rewritable; R:(RE: rewritable; R:recordable once)recordable once)


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Disc CharacteristicsDisc Characteristics


NumericalNumerical AperatureAperature measuresmeasures thethe abilityability ofof aa lenslens toto gathergather andand

focusfocus lightlight.. AsAs thethe numericalnumerical apertureaperture increases,increases, thethe focusingfocusing powerpowerincreasesincreases andand thethe beambeam sizesize decreasesdecreases..

PhasePhase changechange impliesimplies thatthat thethe discdisc sectionsection isis eithereither anan amorphousamorphousoror crystallinecrystalline statestate.. TheThe reflectivityreflectivity changeschanges accordinglyaccordingly thusthusrepresentingrepresenting aa binarybinary bitbit..


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Recorder CharacteristicsRecorder Characteristics

OverOver twotwo hourshours ofof HDTVHDTV cancan bebe placedplaced onon aa singlesingle layerlayerBD,BD, whichwhich correlatescorrelates toto overover 1313 hourshours forfor standardstandard TVTV..

TheThe transfertransfer raterate isis 3636 megabitsmegabits perper secondsecond..

AtAt 11xx speed,speed, itit takestakes approximatelyapproximately 11..55 hourshours toto recordrecordanan entireentire singlesingle layerlayer BDBD..

RecorderRecorder CostCost:: $$11,,500500 -- $$22,,500500;; BDBD CostCost:: $$2626..

BDsBDs areare commerciallycommercially availableavailable inin thethe UU..SS.. sincesince 20062006..


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Capacity ComparisonCapacity Comparison

Courtesy: How Stuff Works


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CompatibilityCompatibility

Courtesy

ThisThis issueissue hashas introducedintroduced aa competitor,competitor, thethe HDHD--DVD,DVD, thatthat basedbased itsitstechnologytechnology aroundaround beingbeing compatiblecompatible withwith thethe DVDDVD..

RecentlyRecently thethe BDABDA hashas developeddeveloped recordersrecorders thatthat areare BD/DVD/CDBD/DVD/CDcompatiblecompatible..

JVCJVC hashas advancedadvanced thethe BDBD byby developingdeveloping aa BD/DVDBD/DVD combocombo discdisc thatthat

storesstores bothboth DVDDVD andand BDBD datadata.. ItIt isis composedcomposed ofof twotwo DVDDVD layerslayers andand aathirdthird BDBD layerlayer storingstoring 3333..55 GBGB totaltotal..


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Protection SystemProtection System

HDTVHDTV containscontains aa copyrightcopyright bitbit thatthat isisdetecteddetected byby thethe BDBD recorderrecorder.. IfIf thethebroadcastbroadcast hashas nono copyrightcopyright bit,bit, thenthen thetheBDBD recorderrecorder isis allowedallowed toto storestore thetheinformationinformation..

UsesUses thethe DataData EncryptionEncryption StandardStandard (DES)(DES)

thatthat hashas aa keykey lengthlength ofof 5656 bitsbits..

AA KeyKey BlockBlock andand DiscDisc IDID areare writtenwritten intointothethe ROMROM areaarea toto preventprevent illegalillegal copyingcopying..


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EnhancementsEnhancements


ErrorError ratesrates increasedincreased inin readingreading andand writingwriting afterafter thetheoriginaloriginal BDBD sufferedsuffered scratchesscratches andand fingerprintsfingerprints..

ForFor protection,protection, thethe prototypeprototype BDBD waswas enclosedenclosed inin aa

casecase.. TheThe casecase increasedincreased thethe sizesize ofof thethe discdisc drivedrive..


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Enhancements(conti.)Enhancements(conti.)


A hard coat wasA hard coat wasderived of anderived of anultravioletultraviolet--curable resin thatcurable resin that

has a scratchhas a scratchresistance similarresistance similarto the DVD.to the DVD.

An artificialAn artificial

fingerprintfingerprintreagent is placedreagent is placedon the discon the discsurface to resistsurface to resist

fingerprint oils.fingerprint oils.


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Features of BLUFeatures of BLU--RAYDiscRAYDisc

--------------------------------------------------------------------------

MANUFACTURINGMANUFACTURING

RECORDINGRECORDING

PLAY BACKPLAY BACK


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ManufacturingManufacturing* BD CoverManufacturingProcess* BD CoverManufacturingProcess



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Recording & PlaybackRecording & Playback



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Address FormatAddress Format*Using Groove Wobbles*Using Groove Wobbles



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Write pulse waveformWrite pulse waveform



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Write strategyWrite strategy



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CODING FORBD OPTICAL RECORDINGCODING FORBD OPTICAL RECORDING



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Modulation code and error correcting codeModulation code and error correcting codeFORDIGITAL STORAGE SYSTEMFORDIGITAL STORAGE SYSTEM



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Error distributionsError distributionsFor 50GB CapacityFor 50GB Capacity



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FutureFuture

ExpectExpect thethe BDBD toto becomebecome moremore prevalentprevalentonceonce thethe HDTVHDTV marketmarket establishesestablishes itsitspresencepresence..

AudioAudio andand videovideo willwill reachreach higherhigher qualitiesqualitieswithwith largerlarger storagestorage spacespace..

LookLook forfor BDBD withwith moremore thanthan twotwo layerslayers asasthethe technologytechnology isis furtherfurther refinedrefined..


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Sony has made the Disc with size 200GB already.Sony has made the Disc with size 200GB already.

Pioneer announced on August 5, 2008 , that theyPioneer announced on August 5, 2008 , that they

have got successhave got successin making BD within making BD with

increased Disc Sizeincreased Disc Size

of 500GB.of 500GB.

Future(conti.)Future(conti.)


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CommercialMarketCommercialMarketBluBlu--ray drivesray drives



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BluBlu--rayMediarayMedia



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BluBlu--ray Recordersray Recorders



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http://http://www.digitaljournal.comwww.digitaljournal.com/article/254136/article/254136

http://http://www.bluwww.blu--ray.comray.com/news/?id=1616,/news/?id=1616,

http://http://www.docstoc.comwww.docstoc.com/docs/424938/White/docs/424938/White--paperpaper--GeneralGeneral--BluBlu--rayray--DiscDisc--FormatFormat

http://http://allfreedownloadlinks.comallfreedownloadlinks.com/free/free--softwares/freesoftwares/free--multimediamultimedia--software/blusoftware/blu--rayray-- toto--dvddvd--propro--v120/v120/

http://http://reviews.cnet.comreviews.cnet.com/1770/1770--9991_79991_7--0.html?query=0.html?query=blu+ray+disc&searchtype=products&tag=ltcol;narrowblu+ray+disc&searchtype=products&tag=ltcol;narrow

http://http://en.wikipedia.orgen.wikipedia.org/wiki/Blu/wiki/Blu--ray_Disc#ray_Disc#

Technical_specificationsTechnical_specifications http://http://www.thefreelibrary.comwww.thefreelibrary.com/_/search/Search.aspx?/_/search/Search.aspx?

SearchBy=0&Word=blu+ray+disc&By=0SearchBy=0&Word=blu+ray+disc&By=0

BibliographyBibliography


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ENDEND

OFTHEOFTHE

SLIDE SHOWSLIDE SHOW

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THANKSTHANKS

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