Kutumiza kwa Optical
Kuyambira m'chaka cha 2000, ndi chitukuko cha teknoloji yolankhulana, optical fiber communication yawonekera teknoloji yotumizira ma modules optical module, ndipo pambuyo pa 2002, mauthenga a digito a HDMI audio ndi mavidiyo adawonekeranso m'munda wamagetsi ogula. Mu Epulo 2002, Hitachi, Panasonic, Philips, Silicon Image, Sony, Thomson, Toshiba makampani asanu ndi awiri adakhazikitsa gulu la mawonekedwe amtundu wamtundu wamtundu wa HDMI, kutumiza kwa HDMI kumagawidwa m'magawo othamanga kwambiri komanso kufalitsa ma siginecha otsika. : 1-12 mapazi a 12 4 zingwe zingwe zimatumiza ma siginecha othamanga kwambiri, pogwiritsa ntchito ukadaulo wa TMDS wosiyanitsa (TMDS) (Time Minimized) yopangidwa ndi Silicon Image Differential Signal) imachepetsa ukadaulo wopatsira ma siginecha, TMDS ndi njira yolumikizirana yosiyana, pogwiritsa ntchito njira yopatsirana, yomwe ndi mfundo yayikulu yaukadaulo wa HDMI, mu optical fiber transmission HDMI: ma 4 awiriwa a 12 Zingwe za TMDS zimatumizidwa ndi 4 VCSEL + 4 multimode optical fibers, yomwe imatha kuthetsa vuto la kuthamanga kwambiri. kufala.
Mu njira yotumizira yotsika kwambiri ya HDMI, mapini a 13-19 mu HDMI ali ndi zingwe zamagetsi za 7: magetsi a 5V, HPD kutentha-kusinthanitsa kumayambitsa CEC, intaneti, SDA, SCA, DDC. Chiwonetsero chofunikira kwambiri chowonetsera chimawerenga njira ya DDC: ndilo lamulo la mawonekedwe a I2C pa gwero la HDMI kuti muwerenge E-EDID pamapeto olandira. I2C, mwachidule kwa Integrated Circuit Bus, ndi basi yolumikizirana yomwe imagwiritsa ntchito zomangamanga za akapolo ambiri. Woyambitsa I2C ndi m'modzi mwa omwe adayambitsa bungwe la HDMI: Philips Semiconductors.
Zingwe za HDMI nthawi zambiri zimagwiritsidwa ntchito polumikiza zida zomvera ndi ma TV ndi oyang'anira, kotero ambiri a iwo ndi kufala kwa mtunda waufupi, nthawi zambiri kutalika kwa 3 mita; Kodi ogwiritsa ntchito akuyenera kuchita chiyani ngati akufuna kuposa mamita atatu? Ngati mupitiliza kugwiritsa ntchito waya wamkuwa, m'mimba mwake wa waya wamkuwa udzakhala waukulu, zimakhala zovuta kupindika, ndipo mtengo wake udzakhala wokwera. Choncho, njira yabwino ndiyo kugwiritsa ntchito ulusi wa kuwala. HDMI AOC Optical hybrid cable product kwenikweni idapangidwa ndiukadaulo, cholinga choyambirira pakukula chikuyenera kukhala kuti zingwe zonse za HDMI 19 ndizotumiza zowulutsa, zomwe ndizomwe zimatumiza ma fiber ophatikizira HDMI, koma chifukwa zingwe 7 za otsika-. kugwiritsa ntchito njira yothamanga ya VCSEL+ multimode fiber low-speed sign encoding ndi decoding ndikovuta kwambiri, kungopanga masigino othamanga kwambiri mumagulu 4 a Njira za TMDS kupita ku VCSEL + multimode fiber transmission, mawaya amagetsi a 7 otsala amalumikizanabe mwachindunji ndi waya wamkuwa. AOC imatha kufalikira ku mita 100 kapena kupitilira apo.
Chingwe chosakanizidwa cha HDMI AOC chifukwa chizindikiro chotsika kwambiri chimagwiritsabe ntchito kutumiza kwa waya wamkuwa, vuto la siginecha yothamanga kwambiri limathetsedwa, ndipo vuto la kufalikira kwa mkuwa wothamanga kwambiri silinathenso, chifukwa chake limakonda kuyanjana kosiyanasiyana. mavuto obwera mtunda wautali. Ndipo zonsezi zitha kuthetsedwa kwathunthu ngati HDMI imagwiritsa ntchito njira zonse zaukadaulo. HDMI yowoneka bwino imagwiritsa ntchito ma 6 optical fibers, 4 kuti atumize zizindikiro za TMDS zothamanga kwambiri, 2 kuti atumize zizindikiro za HDMI zotsika kwambiri, ndipo mphamvu yakunja ya 5V ikufunika pamapeto owonetsera a RX monga mphamvu yosangalatsa ya plugging ya HPD yotentha. Pambuyo potengera njira yothetsera mawonekedwe onse, HDMI, njira yothamanga kwambiri ya TMDS ndi njira yotsika kwambiri ya DDC imasinthidwa kukhala optical fiber transmission, ndipo mtunda wotumizira umakhala bwino kwambiri.
Thandizo la ma protocol
Ngakhale mzere wosakanizidwa wamkuwa wa optical wakweza kufalikira kosataya kwa zizindikiro zakutali mpaka kutalika kwambiri, palinso teknoloji yomwe imathetsa kwathunthu kukhalapo kwa waya wamkuwa monga woyendetsa kufalitsa, ndiko kuti, fiber optical fiber HDMI 2.1 mzere, HDMI 2.1 pure optical active optical cable (AOC) imagwirizana kwathunthu ndi muyezo wa HDMI 2.1, kutumiza ma siginecha kumagwiritsa ntchito ulusi wa kuwala, mulibe mkuwa. waya, kufalikira kwa CHIKWANGWANI sikumakhudzidwa ndi kusokonezedwa ndi ma elekitiroma. Chizindikiro chotumizira cha AOC sichimapanikizika, bandwidth yayikulu ndi 48Gbps, imatha kufalitsa bwino zithunzi za 8K Ultra-high-definition, mtunda wautali kwambiri wotumizira ukhoza kufika 500m. Poyerekeza ndi mawaya amkuwa achikhalidwe, chingwe cha fiber optic ichi ndi chachitali, chofewa, chopepuka, chokhala ndi mawonekedwe abwinoko komanso mawonekedwe abwino amagetsi amagetsi. Kumayambiriro kwa chaka, HDMI Association for HDMI Cable certification test specifications for update yaikulu, dongosolo latsopano la DMI Passive Adapter certification test, m'mbuyomu pansi pa Ultra High Speed HDMI Cable test specifications, kuwonjezera pa ayenera kuthandizira HEAC ntchito, chingwe chomwe chimagwiritsidwa ntchito potumiza HEAC chikufunikabe kugwiritsa ntchito waya wamkuwa kuti chitsimikizidwe, ngati chikugwiritsa ntchito ulusi wathunthu, sichingatsimikizidwe, ndi ntchito ya Premium High Speed HDMI HEAC pansi pa chingwe. mafotokozedwe ndi chithandizo chosankha, pambuyo pake ndondomekoyi yakhala chisankho choyamba cha kuyesa kwazitsulo zonse za AOC Cable panthawiyi, fiber fiber HDMI yakhala ikudziwika mwalamulo, tsopano akuti HDMI fiber transmission in optical hybrid cable ( AOC) ndi kufala kwa mawonekedwe onse omwe ali bwino, makamaka, zimatengera mtengo wantchito ndi msika wogwiritsa ntchito kusankha, chilichonse chili ndi zabwino zake.
Nthawi yotumiza: Jul-17-2023