Tèminal HDMI a ka transmèt siyal odyo san konprese ak siyal videyo, epi li bay ekipman konpatib ki gen ladan bwat seri -top, jwè DVD, òdinatè pèsonèl, anplifikatè entegre, odyo dijital ak televizyon, elatriye, epi gen done komen Tiyo konekte. ka transmèt siyal odyo ak videyo an menm tan. Depi siyal odyo ak videyo yo sèvi ak menm kab, enstalasyon sistèm lan senplifye anpil. HDMI fèt pou ranplase koòdone transmisyon videyo ki pi gran analòg tankou tèminal SCART oswa RCA.
HDMI sipòte nenpòt fòma imaj televizyon ak òdinatè, tankou imaj videyo estanda ak {0}}definisyon wo, ak odyo dijital milti-. Pandan transmisyon, divès kalite done videyo yo pral kode nan pake done pa chip transceiver HDMI a lè l sèvi avèk teknoloji Tranzisyon Minimize Siyal diferans (TMDS).
When the HDMI terminal specification was released, the maximum pixel transfer rate was 165Mpx/sec, which was sufficient to support 1080p resolution at 60 frames per second, or UXGA resolution (1600x1200). Later, it was extended to 340Mpx/sec in the HDMI 1.3 specification to cope with future possibilities. demand.
HDMI can also support uncompressed 8-channel digital audio transmission (sampling rate 192kHz, data length 24bits/sample), and any compressed audio stream such as Dolby Digital or DTS. It also supports 8-channel 1-bit audio used by SACD. In the HDMI 1.3 specification, support for uncompressed audio streaming with ultra-high data volume such as Dolby TrueHD and DTS-HD has been added.
Estanda Kalite A HDMI konektè a gen 19 broch, ak yon lòt kalite konektè B ki sipòte rezolisyon ki pi wo yo te defini, men li toujou pa itilize pa nenpòt manifakti. Konektè Kalite B a gen 29 broch, sa ki pèmèt li transmèt chanèl videyo elaji pou satisfè egzijans Pleasant segondè nan lavni, tankou WQSXGA (3200x2048px).
Type A HDMI is backward compatible with the single link DVI-D or DVI-I interface (but does not support DVI-A) currently used by mainstream computer screens and display cards, which means that the signal source using the DVI-D interface can pass The conversion cable drives HDMI display devices, but this conversion solution does not support audio transmission and remote control functions. In addition, DVI monitors without HDCP certification will not be able to watch the video data output from HDMI with HDCP encryption protection.