HDMI (High-Definition Multimedia Interface) What is HDMI? Background Info Review Terminology Explain Operation Advantages.

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Presentation transcript:

HDMI (High-Definition Multimedia Interface) What is HDMI? Background Info Review Terminology Explain Operation Advantages

Background Information Analog Television : Traditional NTSC “NOISE” Higher Bandwidth

Background Information Digital Televison : Developed: Early 90s Feb 17, 2009 ATSC LOWER BANDWIDTH= BETTER PICTURE & SOUND QUALITY

HDTV (High Definition Television) HDTV: low bandwidth frees space for HDTV ATSC Resolution 720p/ 1080i/ 1080p

Terminology Analog TV – encoded A/V information transmitted via analog signal; function of amplitude & frequency Digital TV – developed in 1990s, allows for better quality TV & more programming choices HDTV – Broadcast at higher resolution (720p or higher)

Terminology Resolution – measures an images detail in pixels Bandwidth – aka bit rate, measures how much data can be transmitted over a medium I “Interlaced” – odd & even lines in frame drawn alternately P “Progressive” – all lines in frame drawn in sequence; requires higher bandwidth

HDMI: What is it? A compact A/V connector interface for transmitting uncompressed digital streams The physical cable which connects an A/V source (i.e. Blu-Ray Disc Player, Set Top Box) with a monitor (i.e. television).

Steps to Attaining High Definition 1.Purchase a television that is HD ready, meaning television capable of achieving a 1080p or FULL HD resolution. 2.Purchase the High Definition service from your cable provider 3.Connect television/monitor to cable converter box using HDMI cable.

Alternatives to HDMI cables Connector Interface PictureSignalDescription HDMIDigital Fully digital. A/V data uncompressed. High Bandwidth. High Resolution (1080p). Single Cable. Effective over sixty feet. Multi-Channel Audio Coaxial Cable Analog Widely used by TV providers. Consistent with NSTC standards. High bandwidth. Minimal Quality. Subject to interference. Component Video Analog Carries Video Info as 3 separate higher-quality signals. Does not carry audio. Separation reduces interferences. Full HD capable, but not supported by many TVs. Composite Video Analog Carries video info as a single lower-quality signal. Subject to noise; unwanted bandwidth fluctuation/interference. S-VideoAnalog Carries video data on two separate signals. Capable of 480i or 576i resolution. Does not carry audio. Operates at lower bandwidth. 4 to 9 pin connector interface.

PROTOCOL / SPECS TMDS 8b/10b encoding Differential signaling Video Data Period Data Island Period Control Period Consumer Electronic Channel (CEC)

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