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The difference between the graphics interface HDCP and HDMI?

HDCP and HDMI what is the relationship between the two ah? Can't I watch HDCP without an HDMI port? X1900GT and LG L194WT both support HDCP, but they do not have HDMI ports, so now that I bought them, I can directly on VISTA, right?

HDCP and HDMI are both relatively recent "new" terms. In the minds of many readers, these two terms seem to be related to HD technology, and therefore often confused. In fact, do not look at the letters of these two groups of English words are similar, in fact, their meanings are very different. The following author to introduce you to the relationship between the two.

First of all, the concept of HDCP, which stands for High-bandwidth Digital Content Protection, is a decoding technology developed by Intel to provide high-bandwidth digital content protection for HDMI. Since this technology is used to encrypt the HD digital signal, users can only enjoy high please video if both software and hardware meet the standard of HDCP, otherwise there will be undisplayable content or low quality picture.

So, in short, HDCP can be understood as an encryption technology to prevent digital content piracy. And this high-definition copyright protection technology developed by the international hardware and software giants will be in the next generation of Blu-ray and HD-DVD are likely to be used, so it is a technology with considerable development potential. In addition, Microsoft has a mandatory requirement for HDCP in the upcoming Windows Vista operating system, referred to as "Protected Content Output Management Protocol (OPM). It will automatically detect whether the hardware device supports HDCP technology, and the X1900GT and LG L194WT used by this user is theoretically eligible.

The HDMI interface can provide up to 5Gbps of data transmission bandwidth, up to 15 meters. It is much higher than the ordinary channel method. Therefore, it can simultaneously transmit uncompressed audio signals and high-resolution video signals, while the general demand for a 1080p video and an 8-channel audio signal is less than 4GB/s, it is clear that the bandwidth provided by HDMI is sufficient.

Compared with the common DVI, HDMI can transmit digital audio signals, and increased support for HDCP, while providing better DDC optional features, so HDMI can be understood as a way to provide high-speed transmission speed for high-definition video (including HDCP). The biggest benefit of HDMI is that only one HDMI cable is needed to transmit both HD video signals and audio signals, which is satisfactory for users and greatly simplifies the installation of home theater systems.

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