Sep 19 2008, 01:06 AM
QUOTE(minghao @ Sep 18 2008, 10:05 PM)
Actually i got a noob question here,what does HDCP works?I know is High Definition Content Protection,but how it works as protection?Prevent things been display?
QUOTE
High-bandwidth Digital Content Protection
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High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across DisplayPort, Digital Visual Interface (DVI), High-Definition Multimedia Interface (HDMI), Gigabit Video Interface (GVIF), or Unified Display Interface (UDI) connections, even if such copying would be permitted by fair use laws. The specification is proprietary, and implementing HDCP requires a license.[1]
For DVI interfaces, HDCP is optional.[2][3]
HDCP is licensed by Digital Content Protection, LLC[4], a subsidiary of Intel. In addition to an annual fee, licensed adopters agree to the conditions set forth in the HDCP License Agreement.[5] For example, high-definition digital video sources must not transmit protected content to non-HDCP-compliant receivers. Additionally, DVD-Audio content is restricted to CD-audio quality or less[6] on non-HDCP-digital audio outputs (analog audio outputs have no quality limits). Licensed adopters cannot allow their devices to make copies of content, and must design their products in ways that "effectively frustrate attempts to defeat the content protection requirements."[7] The technology sometimes causes handshaking problems, especially with older high-definition displays.
From Wikipedia, the free encyclopedia
(Redirected from HDCP)
Jump to: navigation, search
High-bandwidth Digital Content Protection (HDCP) is a form of digital copy protection developed by Intel Corporation to prevent copying of digital audio and video content as it travels across DisplayPort, Digital Visual Interface (DVI), High-Definition Multimedia Interface (HDMI), Gigabit Video Interface (GVIF), or Unified Display Interface (UDI) connections, even if such copying would be permitted by fair use laws. The specification is proprietary, and implementing HDCP requires a license.[1]
For DVI interfaces, HDCP is optional.[2][3]
HDCP is licensed by Digital Content Protection, LLC[4], a subsidiary of Intel. In addition to an annual fee, licensed adopters agree to the conditions set forth in the HDCP License Agreement.[5] For example, high-definition digital video sources must not transmit protected content to non-HDCP-compliant receivers. Additionally, DVD-Audio content is restricted to CD-audio quality or less[6] on non-HDCP-digital audio outputs (analog audio outputs have no quality limits). Licensed adopters cannot allow their devices to make copies of content, and must design their products in ways that "effectively frustrate attempts to defeat the content protection requirements."[7] The technology sometimes causes handshaking problems, especially with older high-definition displays.
For more info go here
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