HDMI (High-Definition Multimedia Interface)

What is HDMI?• Background

Info• Review

Terminology• Explain Operation

• Advantages

Background InformationAnalog 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:•DTV @

low bandwidth frees

space for HDTV•ATSC

•Resolution

•720p/ 1080i/ 1080p

TerminologyTerminology

• 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)

TerminologyTerminology

• 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 cablesConnector Interface

Picture Signal Description

HDMI Digital 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-Video Analog 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)

ANY QUESTIONS?