NEC AccuSync LCD92VXM Frequently Asked Questions page 2

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content that uses the DVI and HDMI interface. HDCP encrypts

the transmission of digital content between the video source or

transmitter—such as a computer, DVD player or set-top-box—

and the digital display, or receiver—such as a monitor, television

or projector. HDCP is not designed to prevent copying or record-

ing of digital content but to protect the integrity of content as it

is being transmitted.

Implementation of HDCP requires a license obtainable from

Digital Content Protection, LLC, which then issues a set of unique

secret device keys to all authorized devices. During authentica-

tion, the receiver will only accept content once it demonstrates

knowledge of the keys. Furthermore, to prevent eavesdropping

and data theft, the transmitter and receiver will generate a shared

secret value that is consistently checked throughout the transmis-

sion. Once authentication is established, the transmitter encrypts

the data and sends it to the receiver for decryption.

References

Webopedia - http://www.webopedia.com/term/h/hdcp.html

This white paper was published in and based on information as

of January 2007. Technical information is subject to change.

2007 NEC Display Solutions of America, Inc.

NEC Display Solutions

500 Park Boulevard, Suite 1100

Itasca, IL 60143

866-NEC-MORE

www.necdisplay.com