Jason Unger
04-13-07, 11:01 AM
Tracking the HDMI Initialization Process
Deep in the bowels of the HDMI interface, there are many different tasks that have to be completed before you can even expect to get a picture -- not only to come on but to stay on.
The initialization process alone has five layers to drill through before a picture can even be seen. What many do not take into considerations is that one, a few, or all of these layers can be causing something downstream not to work. This does not have to be the case anymore.
http://www.cepro.com/asset/5886.jpg (http://www.cepro.com/magazine/article/18144.html)
There are some products in the field that allow the user not only to connect the interface correctly but also to see the initialization process take place. This is a good thing.
You will see many products coming to market that monitor this section of the interface while they are doing their jobs -- could be switching, equalizing, interpolating or just being curious to see the first contact instructions take place.
With these new tools, the user will be able to verify that the 5-volt supply line is in fact up and present while verifying the level. They monitor the HotPlug Detection system for confirmation and level set, and are able to see the handshake for EDID and HDCP.
For more on the HDMI initialization process, check out
http://www.cepro.com/magazine/article/18144.html
Deep in the bowels of the HDMI interface, there are many different tasks that have to be completed before you can even expect to get a picture -- not only to come on but to stay on.
The initialization process alone has five layers to drill through before a picture can even be seen. What many do not take into considerations is that one, a few, or all of these layers can be causing something downstream not to work. This does not have to be the case anymore.
http://www.cepro.com/asset/5886.jpg (http://www.cepro.com/magazine/article/18144.html)
There are some products in the field that allow the user not only to connect the interface correctly but also to see the initialization process take place. This is a good thing.
You will see many products coming to market that monitor this section of the interface while they are doing their jobs -- could be switching, equalizing, interpolating or just being curious to see the first contact instructions take place.
With these new tools, the user will be able to verify that the 5-volt supply line is in fact up and present while verifying the level. They monitor the HotPlug Detection system for confirmation and level set, and are able to see the handshake for EDID and HDCP.
For more on the HDMI initialization process, check out
http://www.cepro.com/magazine/article/18144.html