3.1 - Video Cables

Question 1

VGA (Video Graphics Array)

Answer 1

• DB-15 connector
  – More accurately called DE-15
• Blue color
  – PC System Design Guide
• Analog signal
  – No digital
  – Image degrades after 5 to 10 meters

Question 2

HDMI (High-Definition Multimedia Interface)

Answer 2

• Video and audio stream
  – All digital, no analog
  – ~ 20 meter distance before losing too much signal
• 19-pin (Type A) connector
  – Proprietary connector

Question 3

DisplayPort

Answer 3

• Digital information sent in packetized form
  – Like Ethernet and PCI Express
  – Carries both audio and video
• Compatible with HDMI and DVI
  – Passive adapter
  – DisplayPort -> HDMI
  – DisplayPort -> DVI

Question 4

DVI (Digital Visual Interface)

Answer 4

• Single and dual link
  – Single link; 3.7 Gbps (HDTV at 60 fps)
  – Dual link; 7.4 Gbps (HDTV at 85 fps)
  – No audio support
• DVI-A
  – Analog signals
• DVI-D
  – Digital signals
• DVI-I
  – Integrated
  – Digital and analog in the same connector