DisplayPort的保护中的应用说明(Circuit P

The DisplayPort interface is designed for broad application in PCs, monitors, TV displays, projectors,as well as other sources of display content. DisplayPort enables a common interface signaling approach for both internal and external display connections to help reduce overall design complexity.It is also expected to make digital displays easier to use and more affordable.The new display interface addresses low-voltage operation, supports protected high-definition content, and is designed to accommodate the higher display resolutions and color depths enabled by Microsoft's next-generation operating system, Windows® Vista.
To conform to current and emerging communications requirements and provide safe, reliable operation, display interfaces must be protected from circuit damage caused by power variations and harsh environmental conditions. The challenge in any high data rate circuit protection scheme is that excess capacitance presented by protection devices will cause some signal attenuation and degradation in display quality.