[AV教學] 專業用語大辭典
[size=6][color=Red]歡迎提供, 提問[/color][/size]DrChik兄, 請加料.........
[[i] Last edited by d228216 on 2005-8-14 at 12:58 AM [/i]]
HDMI
HDMI - HIGH DEFINITION MULTIMEDIA INTERFACE (更新中)主網頁: [url]http://www.hdmi.org/[/url]
優点: 機過機只需一條接線, 全數位.
現有機種: Plasma TV, LCD TV, 投影機, DVD Player, AV AMP, DVD Recorder, HDTV Turner, SACD,
未來機種: HD-DVD, Playstation 3, Xbox 2, PC, DV, [小型機種] MP3, 手電, PLAM, PMP
HDMI一條線就能支援數碼視頻和數碼音頻的輸出。以無壓縮技術傳送全數碼信號，最高傳輸速度是3.95Gbps，並支持八聲道96kHz或單聲道的192kHz數碼音頻傳送，免除數碼音頻接線，接駁線的長度限制比DVI少，一般就算走20幾米也不會影響畫質，可說是兼容優質的聲畫表現。
HDMI首個也是唯一一個在單數字介面中集成不壓縮的高清晰度視頻、多聲道音頻和智慧格式與命令資料的數位介面。對於您的最終用戶，為音頻和視頻使用單線纜可顯著簡化家庭影院系統安裝並消除了與家庭影院系統元件典型相關的混亂線纜。最重要的是，HDMI在類比A/V連接上提供卓越的優勢，包括傳輸不壓縮的數位視頻和音頻內容的能力。
HDMI（High Definition Multimedia Interface）是一種新的影像及聲音傳輸介面的標準，由Hitachi、Panasonic、Sony、Thomson（RCA）、Toshiba、Philips和美國晶片製造商Silicon Image等七家大廠組織並製定而成，成為目前歐美日等影像大廠皆已列入最新一代的系統需求。HDMI之所以成為AV界新熱，最主要是它包含了以下數項優點：數位品質未經壓縮、使用介面更具親和性、相容數位視訊介面（DVI）標準及HDMI最高可支援5GPS的傳輸（如今HDTV僅有2.2GPS，因此意味HDMI還留了很大的空間給將來更高標準的數位視頻使用）。因此，HDMI的傳輸可完全取代傳統的Video訊源，一躍而成為數位影像高畫質的新指標。
What is HDMI?
HDMI (High-Definition Multimedia Interface) is the first industry-supported, uncompressed, all-digital audio/video interface.
HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, and A/V receiver and an audio and/or video monitor, such as a digital television (DTV).
HDMI supports standard, enhanced, or high-definition video, plus multi-channel digital audio on a single cable.
It transmits all ATSC HDTV standards and supports 8-channel digital audio, with bandwidth to spare to accommodate future enhancements and requirements.
How do consumers benefit from HDMI?
The new HDMI digital interconnect provides:
1) Superior, uncompressed digital video and audio quality
2) Simple, user-friendly connector that replaces the maze of cabling behind the entertainment center
3) Integrated remote control
4) A popular interface enabling the transmission of high-definition content. HDMI opens the floodgate of digital content from major motion picture producers
What is the life expectancy of HDMI?
HDTV uses less than 1/2 of HDMI's available 5 Gbps bandwidth.
With capacity to spare, HDMI can incorporate new technology advancements and capabilities long into the foreseeable future.
Does HDMI provide a secure interface?
HDMI, when used in combination with HDCP, provides a secure audio/video interface that meets the security requirements of content providers and systems operators.
What types of video does HDMI support?
HDMI has the capacity to support existing high-definition video formats (720p, 1080i, and even 1080p).
It also has the flexibility to support enhanced definition formats such as 480p, as well as standard definition formats such as NTSC or PAL.
Does HDMI accommodate long cable lengths?
Yes. HDMI technology has been designed to use standard copper cable construction at long lengths.
In order to allow cable manufacturers to improve their products through the use of new technologies, HDMI specifies the required performance of a cable but does not specify a maximum cable length.
Cable manufacturers are expected to sell reasonably priced copper cables at lengths of up to 15 meters.
As semiconductor technology improves, even longer stretches can be reached with fiber optic cables, and with active cable technologies such as amplifiers or repeaters.
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