04-03-2011, 09:47 AM
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DisplayPort
What is DisplayPort?
It's a new digital display standard. It started hitting the market in 2008.
It's compared very closely to HDMI because of its looks and ability to transport video and audio signals which current computer display interfaces can’t do.
It supports both external (box-to-box) and internal (Chip- to-Chip) display connections
is royalty free unlike its competitor HDMI. HDMI currently has a $0.04 per device royalty and charges large manufacturers have a $10,000 annual fee.
Video Interfaces
DisplayPort can replace all of the following interfaces
- DVI (Digital Visual Interface)
- LVDS (Low-Voltage Differential Signaling)
- HDMI (High Definition Multimedia Interface)
- VGA (Video Graphics Array)
Comparing Digital Interfaces
Why DisplayPort?
A standard interface for PC and Consumer electronics
Capable of delivering high quality video and audio
Simplify cabling for internal and external devices
Apply an embedded clock to reduce EMI susceptibility and wire count
Open and royalty free standard
High Level Overview
Pinout
Current Features (v1.1a)
Micro-packet architecture
1.6 or 2.7 Gbit/sec per data pair
Use 1, 2, or 4 pairs depending on bandwidth needed
Native fiber optic cabling
Supports DPCP and HDCP copy protection schemes
Upcoming Features (v 1.2)
Doubles maximum pair bandwidth to 5.4Gbit/sec (4 pairs = 21.6 Gbit/sec)
Enough bandwidth to support 3840 x 2160 at 30 bits/pixel
Monitor chaining
Stereoscopic 3D at up to 1920 x 1080
DirectDrive Displays
Upcoming Features (v 1.2)
Increased Auxiliary Channel bandwidth, enabling USB pass through
Incorporation of Apple's Mini DisplayPort into standard