Hais txog DVD thiab DVD Players
Txawm nyob hauv hnub nyoog ntawm smartphones thiab internet streaming, DVD muaj qhov kev sib txawv ntawm kev ua tau zoo tshaj plaws hauv tsev lom ze khoom hauv keeb kwm. Thaum nws tau nkag rau hauv 1997, nws tsis tau ntev ntev rau nws los ua ib qho tseem ceeb ntawm kev lom zem ua yeeb yaj kiab hauv ntau lub tsev - qhov tseeb, niaj hnub no, muaj coob tus neeg tau txais kev pab ob, lossis ntau dua, cov khoom siv hauv lawv tsev tuaj yeem ua DVDs.
Txawm li cas los, koj paub npaum li cas txog koj tus neeg ua si DVD thiab nws ua tau thiab ua tsis tau dab tsi? Xyuas qhov tseeb.
Dab Tsi Cov Ntawv Loj & # 34; DVD & # 34; Yeej Tau Muag Rau
DVD stands rau Digital Versatile Disc . DVDs yuav siv tau los khaws cia video, suab, duab tseem ceeb, lossis cov ntaub ntawv siv computer. Ntau tus neeg xa mus rau DVD raws li Digital Video Disc , tab sis, technically, qhov no tsis yog lawm.
Dab tsi ua rau DVD txawv dua VHS
DVD txawv ntawm VHS ntawm cov nram qab no:
- Rau VHS, cov ntaub ntawv suab thiab yees duab tau muab tso rau ntawm ib lub luam yeeb yaj duab hauv video, uas yog nyeem los ntawm ib lub taub hau hauv lub VCR. Rau DVD, kev yees duab thiab cov suab ntaub ntawv tau muab tso rau hauv cov pits uas nyeem tau ntawm lub laser.
- Ironically, ib lub cev hauv lub cev muaj ntau dua nrog cov ntaub ntawv sau cov yas ntaub ntawv tshaj li kev yees duab. Pib ntsais koj teeb ntawm cov ntaub ntawv keeb kwm yog cov kab hauv lub cev grooves, uas yog nyeem ntawm lub stylus. Qhov sib txawv, dhau li ntawm qhov zaws av nplaum ua qhov kev tsim siv, yog qhov teeb liab ntawm cov ntaub ntawv yas yog ib qho analog waveform thiab cov teeb liab ntawm lub DVD yog cov khoom ua digital.
- DVD txhawb ob tus qauv 4 x 3 thiab anamorphic widescreen 16 x 9 screen aspect ratios .
- DVD muaj peev xwm muab ob npaug kev yees duab dua VHS, tsim kom muaj duab ntau dua thiab xim zoo dua. Txawm li cas los, txawm hais tias DVD muab cov lus daws siab dua VHS, nws tsis yog qhov tseeb txhais cov hom ntawv - ntau dua ntawm qhov no hauv "Upscaling DVD Players" ntawm tshooj no.
- Koj tuaj yeem nkag tau ib feem ntawm daim DVD los ua kev sib txauv lossis ceev ceev, yog koj yuav tsum ceev ceev los sis rov qab ua dua VHS daim kab xev kom nrhiav tau ib qhov chaw nyob ntawm daim kab xev.
- DVD txhawb kev sib txeeb cov khoom noj thiab cov yeeb yaj duab, xws li ntau yam lus xaiv, cov tswv yim suab, thiab cov nta ntxiv uas tsis muaj nyob hauv VHS hom ntawv. DVD kuj txhawb kev kaw Captioning thiab On / Off Subtitling ntawm ntau yam lus.
- DVD txhawb synchronized ntau lub koob yees duab sab nrauv saib, muab cov filmmaker khoom siv lub koob yees duab lwm lub duab tha duab tawm thaum lub sij hawm thaij duab rau cov neeg ua haujlwm DVD cov khoom (qhov no feature tsis tshua siv).
- DVDs tsis raug cuam tshuam los ntawm cov hlau nplaum. Cov kaus poom lag luam tsis tuaj yeem raug rho tawm.
DVD cheeb tsam Coding
Thaj tsam coding yog ib qhov teeb meem uas raug tswj los ntawm MPAA (Tsab Xovxwm Ntawm Tebchaws Asmeskas) uas tswj cov khoom faib hauv DVD Market hauv World Markets raws li cov yeeb yaj kiab tso tawm cov hnub thiab lwm yam.
Lub Ntiaj Teb yog muab faib ua ob peb cheeb tsam hauv DVD. DVD players tuaj yeem ua cov DVDs uas muaj cim rau thaj tsam tshwj xeeb.
Txawm li cas los xij, muaj DVD players uas muaj peev xwm tom qab tau txais Cheeb Tsam Txoj Cai. Hom DVD player no yog hu ua "Code Free DVD player".
Yog xav paub meej txog DVD Region Codes, Regions, thiab Resources for Code Dawb DVD Players, xa peb cov khub tso npe: Lub Nroog Cov Cai - Lub Zog Tus Zog Tus Zog .
Nkag Mus Siv Lub Suab Hauv Ib Daim DVD
Ib qho ntawm cov txiaj ntsig ntawm DVD yog nws lub peev xwm los muab ob peb lub suab xaiv rau ntawm ib lub disc.
Txawm hais tias cov suab ntawm cov DVD yog cov digital, nws tuaj yeem nkag mus rau hauv ib qho kev sib piv lossis cov ntawv digital. DVD players muaj tus qauv tso suab ntawm lub suab paj nruag uas muaj peev xwm cuam tshuam rau txhua lub tso suab hauv lub tso suab lossis lub tso suab hauv TV nrog lub suab tso suab. DVD players tseem muaj digital audio outputs uas tuaj yeem txuas nrog txhua tus AV receiver nrog cov suab suab. Koj yuav tsum siv cov ntawv kho qhov muag lossis digital coaxial audio txuas mus rau Dolby Digital lossis DTS 5.1 puag ncig lub suab suab.
DVD Player Video Kev Sib Txuas
Feem ntau cov DVD players muaj tus txheej txheem RCA video , S-video , thiab Component Video outputs .
Nyob rau feem ntau ntawm cov DVD players, qhov kev tivthaiv video tawm tuaj yeem hloov tau cov teebmeem ntawm cov duab sib txuas lossis cov yeeb yaj kiab uas xa mus rau TV (ntau tshaj qhov ntawd tom qab ntawm tshooj no). Cov DVD players feem ntau kuj muaj DVI lossis HDMI kev tshaj tawm rau kev sib txuas zoo dua rau HDTVs. DVD players feem ntau tsis muaj antenna / cable outputs.
Siv A DVD Player nrog lub TV Tias Tsuas muaj ib qho Antenna / Cable Connection
Ib qho chaw ua lag luam tsis tau ntsuas rau: ib qho kev thov rau cov players kom muaj peev xwm txuas mus rau ib tus qauv kav hlau txais xov / cov ntawv xov tooj cua ntawm cov laus dua analog TVs.
Mus txuas ib lub DVD player rau ib lub TV uas tsuas muaj lub xov tooj cua / cable txuas, koj xav tau ib lub tshuab hu ua RF Modulator , uas muab tso rau ntawm DVD player thiab TV.
Rau cov duab qhia txog cov kauj ruam ntawm RF-Module, TV, thiab DVD player ua ke, xa mus rau Kev Teeb thiab Siv ib qho Module nrog tus DVD Player thiab TV
Yeeb Yam DVDs vs DVDs Ua Los Ntawm Ib Lub Tshuab DVD Los Yog PC
Cov vev xaib DVD uas koj yuav los yog xauj tsev muaj cov yeeb yam txawv dua li DVDs uas koj ua hauv tsev ntawm koj lub PC lossis DVD recorder .
DVD Cov Ntaub Ntawv Teev Npe rau cov neeg siv khoom siv zoo li cov qauv siv coj mus muag DVDs, uas yog hu ua DVD-Video. Txawm li cas los xij, txoj kev yees duab rau hauv daim DVD yog txawv.
Ob lub tsev thiab cov lag luam coj los siv cov "pits" thiab "bumps" uas yog lub cev tsim ntawm cov discs khaws cov video thiab suab lus, tab sis muaj qhov sib txawv ntawm qhov "pits" thiab "bumps" yog tsim los ntawm kev lag luam DVDs vs tsev -Cov ntaub ntawv DVDs.
- Cov yeeb yaj kiab lag luam yog tsim nrog cov txheej txheem ntawm cov neeg ua haujlwm, cov ntaub ntawv xws li cov ntaub ntawv sau txog cov ntaub ntawv yas - txawm hais tias cov cuab yeej yog txawv ntawm cov ntaub ntawv (cov ntaub ntawv cov ntaub ntawv yog stamped nrog cov grooves thiab DVD raug stamped nrog cov pits thiab pob).
- DVDs tau tom tsev hauv ib lub DVD recorder los yog lub PC yog "hlawv".
Xav paub ntau ntxiv, xa mus rau peb tus khub tsab ntawv: Qhov Sib Txawv Ntawm Cov Yeej Hlav DVDs thiab DVDs Koj Ua Nrog DVD Daws lossis PC
DVD Players thiab Zaj Scan
Txheem yeeb yaj kiab, xws li VHS VCRs, camcorders, thiab TV tshaj tawm hauv TV yog tso tawm ntawm lub vijtsam (xws li CRT cov lus qhia) los ntawm kev sojntsuam cov kabmob ntawm lub vijtsam uas yog hu ua interlaced scan. Interlace Scan yog cov kab ntawm cov duab tso tawm hauv ib qho kev zam rau ntawm TV. Tag nrho cov khib kab yog luam thawj ua ntej, ces tag nrho cov kab txawm. Cov no yog hu ua cov liaj teb.
Ib qho interlaced scanned ncej yog ua los ntawm ob thaj tsam ntawm video (uas yog qhov twg lub sij hawm "interlaced scan" los ntawm). Txawm hais tias video thav ntawv tso tawm kom pom txhua 30th ntawm ib pliag, tus neeg saib xyuas, ntawm txhua qhov chaw hauv lub sij hawm tsuas yog pom ib nrab ntawm cov duab. Txij thaum lub txheej txheem scanning ceev heev, tus tuav pom qhov yees duab ntawm qhov kev tshuaj ntsuam ua tiav duab.
Hlav scan duab txawv ntawm cov duab scan interlaced nyob rau hauv cov duab tau tso tawm kom pom ntawm ib qho screen los ntawm txhua lub kab (los yog kab hauv pixels) hauv qhov kev txiav txim kom tshwm sim es tsis yog lwm txoj kev txiav txim. Hauv lwm cov lus, cov duab kab (los yog pixel natwm) raug muab luam tawm hauv kev hais qhia zauv (1,2,3) hauv qhov kev ntsuas ntawm sab saum toj mus rau hauv qab, tsis yog ua lwm txoj cai (kab los yog kab 1,3,5, lwm yam. .. raws li txoj kab los yog kab 2,4,6).
Los ntawm kev sojntsuam cov duab mus rau ib qho screen txhua 60th ib pliag es tsis yog "interlacing" lwm cov kab txhua 30th ib, thib ob, ntau dua, cov dluab yuav raug tsim ntawm qhov screen uas zoo tsim nyog los saib cov ntsiab lus zoo, xws li cov ntawv nyeem thiab nws kuj tsis tshua muaj teeb meem tuaj yws dua.
Yuav kom nkag tau rau ib qho DVD player tus cuj pliav scan feature, koj yuav tsum muaj lub TV uas tuaj yeem tso cov duab scanned, xws li LCD , Ntshav , TV OLED , lossis LCD thiab DLP video projector.
Ib tug neeg uas ua DVD ntawv cov kev kuaj ua kom tiav yuav raug muab tua lossis nyob rau. Qhov no txhais tau tias koj tseem siv tau cov neeg uas ua ntawv nrog lub TV uas tsuas tuaj yeem tso cov duab sclated duab (xws li cov laus CRT teeb).
Yog xav paub ntxiv, mus saib peb tus khub hauv tshooj: Zaj Scan - Koj Yuav Tsum Tau Paub .
Yuav ua li cas DVD Players Yuav Tau Ua Si CDs
CDs thiab DVDs, tab sis sib qiv qee yam sib xws, xws li qhov luaj li cas, cov ntawv xov tooj, cov ntawv xov xwm, thiab / los yog cov duab tseem ceeb (coj mus muag) los sis hlawv (tsev kaw tseg) - lawv kuj txawv.
Qhov thib sib txawv yog qhov loj me ntawm cov pits lossis qhov hluav taws kub ntawm DVDs thiab CDs yog txawv. Yog li ntawd, lawv txhua tus yuav tsum tau kom cov laser nyeem xa ib lub teeb beam ntawm txawv wavelengths los nyeem cov ntaub ntawv ntawm txhua hom ntawv disc.
Yuav ua kom tiav no, ib lub DVD player yog nruab nrog ib yam ntawm ob yam: Ib lub laser uas muaj peev xwm hloov nws cov ntsiab lus yog raws li DVD lossis CD kom paub los sis, feem ntau, ib qho DVD player yuav muaj ob lub lasers, ib qho rau cov nyeem DVDs thiab ib rau kev nyeem CDs. Qhov no feem ntau raug xa mus rau lub koom haum Twin Laser.
Vim li cas cov DVD players tseem ua si CDs tsis yog kev pab ntau heev, tiam sis nws yog ib qho zoo li kev tshaj li kev lag luam. Thaum DVD thawj zaug qhia rau lub khw muag khoom hauv xyoo 1996-1997, nws tau txiav txim siab tias ib qho ntawm txoj kev zoo tshaj plaws los mus muag cov DVD players thiab ua kom lawv txaus siab rau cov neeg tau txais los kuj muaj peev xwm los ua si CDs. Yog li ntawd, cov DVD player tau los ua ob chav nyob hauv ib qho, ib qho DVD player thiab CD player.
Uas yog zoo rau kev ua si CDs - Ib tug DVD Player los sis CD-Player xwb?
Txawm hais tias muaj qee qhov kev sib xyuas circuitry sib koom, cov kev cai ntawm CD thiab DVD compatibility yuav tsum yog nyob hauv tib lub chassis.
Raws li seb TXHUA cov DVD players zoo CD players, tsis yog txhua tus. Koj yuav tsum sib piv lawv lub tsev-ntawm-tsev. Txawm li cas los xij, ib tug ntau ntau DVD players yeej zoo CD players. Qhov no yog vim lawv siab dua-kawg suab khiav haujlwm. Tsis tas li ntawd, raws li cov txiaj ntsig ntawm cov DVD players, nws ua qhov nyuaj nrhiav cov players CD nkaus xwb. Feem ntau ntawm cov CD players tsuas yog cov hnub no yog cov chav nruab nrab los yog qib siab kawg nkaus, nrog rau ob peb tus neeg ntaus kis las. Cov CD thiab DVD cov kws tua cov kaujvuam tau ib zaug xauv npo, tiamsis muaj txij li lub sijhawm dhau los ntawm txoj kev.
Superbit DVDs
Superbit DVDs yog DVDs uas siv tag nrho cov chaw rau cov yeeb yaj kiab thiab cov suab paj nruag - tsis pub ib yam xws li tawm tswv yim lossis lwm yam tshwj xeeb nta nrog rau hauv tib lub disc. Yog vim li cas qhov no yog qhov Superbit txheej txheem siv tag nrho tus nqi tsawg (yog li lub npe Superbit) muaj peev xwm ua tau ntawm ib qho DVD, ua kom qhov zoo tshaj plaws ntawm DVD hom ntawv. Cov xim muaj ntau qhov tob thiab variation thiab muaj tsawg ntug artifact thiab video suab nrov teeb meem. Xav tias nws yog ib qho "zoo tshaj DVD".
Txawm li cas los xij, txawm hais tias Superbit DVDs muab kev txhim kho hauv cov duab zoo dua li cov qauv DVDs, lawv tseem tsis zoo li Blu-ray disc.
Superbit DVDs yog playable rau tag nrho cov DVD thiab Blu-Ray Disc players. Txawm li cas los xij, txij thaum qhia txog Blu-Ray, Superbit DVDs tsis raug tso tawm lawm.
Yog xav paub ntxiv txog Superbit DVD, xa mus saib ntawm Superbit (DVD Tham nrog) thiab ib daim ntawv teev txhua Superbit DVD lub npe uas tau tso tawm (cim tseg tias qhov Tam sim no Muaj qhov txuas ntxiv tsis zoo) thiab zoo sib piv kev sib piv ntawm Standard DVD thiab Superbit DVD.
DualDisc
DualDisc yog ib qho muaj teeb meem uas yog qhov disc muaj DVD txheej ntawm ib sab thiab CD-txheej txheej ntawm lwm yam. Txij li cov disc muaj ib lub thickness txawv dua li ib tus qauv DVD los yog txheem CD, nws yuav tsis muaj tiav playback compatibility rau qee cov DVD players. DualDiscs tsis raug lees paub tias yog CD cov lus tshaj tawm. Yog li ntawd, Philips, cov neeg tsim ntawm CD thiab cov neeg tuav cov CD feem ntau, tsis tso cai siv cov ntawv CD sau rau DualDiscs.
Rau cov ntaub ntawv ntawm seb koj tus kheej DVD neeg uas ua ntawv tshaj DualDisc, xyuas koj cov neeg siv kev qhia, tiv tauj lub tshuab tech, los yog mus rau lub vev xaib ntawm koj tus neeg ua si DVD.
Blu-duab tshav / DVD Flipper Discs
Lwm "Dual" type disc yog Blu-duab tshav / DVD flipper Disc. Hom kab paj no yog Blu-duab tshav ntawm ib sab, thiab DVD rau lwm yam. Ob qhov Blu-duab tshav thiab DVD sab yuav raug ua si ntawm Blu-Ray Disc neeg uas ua ntawv, tab sis tsuas yog sab nraum DVD sab ua si rau cov DVD player. Muaj ntau ntau cov tsos muaj nyob rau ntawm Blu-Ray flipper Disc.
HD-DVD / DVD Combo Discs
Zoo ib yam li Blu-Ray flipper disc, ib qho HD-DVD / DVD combo disc yog ib qho HD-DVD ntawm ib sab, thiab DVD rau lwm tus. Ob lub HD-DVD thiab DVD sab yuav raug ua si rau tus HD-DVD neeg uas ua ntawv, tiam sis tsuas yog sab nraum DVD sab si rau hauv ib daim DVD player. Muaj li ntawm 100 HD-DVD combo disc lub npe - Txawm li cas los, vim tias cov HD-DVD hom tau txiav xyoo 2008, cov discs yog qhov nyuaj heev los nrhiav.
Universal DVD Players
Ib qho DVD player uas yog Universal DVD hais txog DVD player uas ua haujlwm SACDs (Super Audio CD) thiab DVD Discs nrog rau cov DVDs thiab CDs.
SACD thiab DVD-Suab yog cov suab daws teeb meem siab uas tau npaj los hloov cov txheej txheem ntaus suab paj nruag CD tiam sis tsis tau ua qhov kev lag luam loj nrog cov neeg siv. Universal DVD players muaj txheej ntawm 6-channel analog audio outputs uas cia tus neeg tau txais kev pab cuam nkag mus rau SACD thiab DVD-suab ntawm AV AV receiver uas yog ib qho teebmeem 6-channel analog audio inputs.
Vim muaj qhov sib txawv ntawm txoj kev SACD thiab DVD-Audio teeb kos rau ntawm ib lub disc, DVD neeg ua si yuav tsum hloov lub teeb liab rau ib qho analog daim ntawv raws li digital kho qhov muag thiab cov kev sib txuas sib txuas ntawm DVD player uas siv los rau Dolby Digital thiab DTS suab tsis tau tshaj SACD lossis DVD-Audio teeb liab.
Ntawm qhov tod tes, SACD thiab DVD-Audio teeb tsa tau hloov ntawm HDMI, tab sis qhov kev xaiv ntawd tsis muaj rau tag nrho cov players. Tsis tas li, nyob rau hauv rooj plaub ntawm SACD cov ntawv xov xwm, thiaj li yuav xa mus ntawm HDMI, feem ntau yog hloov mus rau PCM
Upscaling DVD Players
Ib qho Upscaling DVD player yog ib chav tsev uas tau nruab nrog ib qho kev txuas nrog DVI lossis HDMI. Cov kev sib txuas no tuaj yeem xa cov duab los ntawm cov DVD player mus rau HDTV uas muaj tib hom kev sib txuas ntawm cov duab hauv cov ntaub ntawv ntshiab, thiab kev tso cai rau "kev tsim kho dua tshiab".
Tus txheem DVD neeg uas ua ntawv, tsis muaj kev tshaj tawm, tuaj yeem tso tawm video teeb meem ntawm 720 x 480 (480i). Ib tug neeg soj ntsuam scan DVD neeg uas ua ntawv, tsis muaj kev tshaj tawm, tuaj yeem tso zis 720 x 480 (480p - caws pliav) video teeb liab.
Upscaling yog tus txheej txheem uas muaj qhov sib xyaw pixel suav ntawm qhov tsim tawm ntawm lub teeb tawm ntawm DVD rau lub cev pixel suav ntawm HDTV, uas yog feem ntau 1280x720 (720p) , 1920 x 1080 ( 1080i los yog 1080p .
Pom tau tias, muaj tsawg heev ntawm qhov muag ntawm tus neeg siv nruab nrab ntawm 720p lossis 1080i . Txawm li cas los xij, 720p tuaj yeem xa tau me ntsis duab smoother, vim tias cov kab thiab cov pixels muab tso rau hauv tus qauv sib law liag, tsis yog ua lwm tus qauv. Yog tias koj muaj 1080p lossis 4K Ultra HD TV - 1080p qhov chaw yuav xa cov txiaj ntsim zoo tshaj.
Cov txheej txheem upscaling yog ib txoj hauj lwm zoo ntawm kev sib piv ntawm cov neeg ua hauj lwm DVD uas tau muab tso tawm los ntawm cov neeg siv lub tshuab DVD los ntawm cov HDTV uas muaj peev xwm, uas ua rau kom muaj kev qhia zoo dua qub thiab xim xim.
Txawm li cas los, upscaling yuav tsis hloov txheem DVD cov duab rau hauv ib qho tseeb video-txhais. Txawm hais tias kev ua haujlwm zoo tshaj plaws nrog cov duab pixel taag, xws li Plasma, LCD, thiab OLED TVs, cov txiaj ntsig tsis yog ib txwm zoo ib yam li CRT raws li siab txhais TVs.
Daws DVD - Blu-Ray Disc
Nrog rau lub HDTV, ntau DVD players yuav nruab nrog "rov qab ua dua tshiab" ua kom zoo dua phim cov kev ua tau zoo ntawm DVD player nrog lub peev xwm ntawm hnub no lub HDTVs. Txawm li cas los xij, DVD tsis yog ib hom ntawv txhais siab.
Rau ntau tus neeg siv, Blu-Ray tau totaub qhov teebmeem txog qhov sib txawv ntawm cov txheej txheem DVD thiab qhov tseeb muaj peev xwm ntawm Blu-ray.
Upscaled DVD nyhav kom pom me ntsis lus ntxawg thiab luv dua li Blu-txoj kab. Ntxiv thiab, thaum saib xim, tshwj xeeb tshaj yog cov liab thiab kev nyuaj siab, nws tseem yog yooj yim los qhia qhov txawv ntawm feem ntau, raws li txawm nrog DVD, cov reds thiab kev nyuaj siab muaj qhov xav paub ntxiv uas yuav muaj zog, thaum tib yam xim hauv Blu -raug heev nruj thiab koj tseem pom cov kev nthuav dav hauv cov xim.
Tshaj Blu-duab tshav - Ultra HD Blu-ray
Ntxiv rau cov DVD thiab Blu-Ray Disc, tus solidification 4K Ultra HD TV nyob rau hauv kev lag luam tau ua rau cov kev taw qhia Ntawm Ultra HD Blu-Ray Disc hom , uas tsis tsuas yog siv cov duab Blu-duab zoo li ib tus nqis siab tab sis deb supersedes lub yees duab zoo ntawm DVD. Yog xav paub ntxiv txog Ultra HD Blu-Ray Disc players, xa mus rau peb tus khub tshooj: Ua ntej koj yuav muaj Ultra HD Blu-txoj kab-neeg Yav Tom Ntej .
Ntxiv rau DVD
Tau kawg, muaj ntau ntxiv rau DVD zaj dab neeg - xyuas seb peb tus khub li cas: DVD Recorder FAQs