Using Your Gateway
HDCP
What is HDCP and how should you troubleshoot it?
HDCP encrypts the transmission of digital content (signal) between the video source (computer, DVD player, or
You see “noise” or “trash” on the screen.
•When your display’s digital capabilities exceed a digital broadcast signal, the signal is increased
How HDCP works.
•Implementation of HDCP requires a license obtainable from the Digital Content Protection, LLC, which then issues a set of unique secret device keys to all authorized devices. During authentication, the receiving device only accepts content after it acknowledges the keys. To further prevent stealing of the data or line tapping, the transmitter and receiver generate a shared secret value that is constantly checked throughout the transmission. After authentication is established, the transmitter encrypts the data and sends it to the receiver for decryption.
You lose the signal to the display while watching a movie on a
•The component must be restarted to establish renegotiation.
For example, while watching a movie on a
A movie starts, but then slowly fades to static.
•The receiving device is not HDCP compatible or it is not negotiating correctly. Restart the video source and
How to determine whether a component is HDCP compliant.
•If the video source device does not have a DVI or HDMI connection, it is not HDCP compliant.
DCDi by Faroudja
What is DCDi by Faroudja?
DCDi® by Faroudja is a video mode algorithm that stands for Directional Correlation
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