If your setup involves an AV receiver or projector, you have introduced additional components into the path that also have to successfully implement HDCP in order to create a secure path between the source (your PC) and the display (your HDTV). Many older devices such as graphics cards, displays and receivers did not implement HDCP correctly (or at all, in some cases). Your graphics card may have an older driver, for instance, or the firmware for your display may be out of date. While connecting an Xbox or BluRay player to your HDTV via HDMI is fairly straightforward, doing so with a PC involves many more variables. That means you’ve had a successful handshake. If you’ve ever watched a DVD on an Xbox 360, you may have briefly seen a message on screen that reads “ Secure HDCP link established.” after you’ve hit play. If all is well, they ‘shake hands’ and get on with the business of your content.
This is because an important part of the HDMI specification involves a content protection scheme called HDCP (high-bandwidth digital copy protection) in which the source device checks the receiving device for an authentication key. The most common challenge we see when integrating older PCs or HD displays via HDMI has been the so-called “handshake issue.” Just a few years ago, HTPC-focused websites like Missing Remote, The Green Button and AV Science forums were full of threads troubleshooting audio and video issues related to these issues. While HDMI can provide a fantastic, all digital, high definition audio and video experience, it can also be tricky to implement with older devices, components, displays and AV receivers, especially those that were made prior to the advent of HDMI v.1.3. Had I wanted to insert an AV receiver into the mix, say to handle surround sound, I would need to do a bit of research first. This direct connection provided me full HD video and sent audio through my TV’s speakers.
In prepping for this post, I took two laptops and a netbook purchased in 2008, 20 (respectively), then in-turn connected all three of them to my Toshiba HDTV (a 2008 purchase) without any issues whatsoever.
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