High Def Forum
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Help with HDCP

02-01-2006, 10:26 PM
I have a Sony KV-34XBR910. The manual states that it supports HDCP via it's DVI connection and is compliant with EIA-861 standard. However, when I connected my DVR from my cable company via a HDMI to DVI cable, I get a message stating that my "HDTV does not support HDCP. Please use the YPrPb component connection to watch television." What is going on? Any help would be greatly appreciated...

02-02-2006, 07:07 AM
I can't remember the order, but it's important that either the TV or DVR be turned on first before the other for the HDCP handshake to be successful...so test it both ways and see if that makes a difference.

02-02-2006, 08:46 AM
You turn on the TV then the cable box so the TV is ready to answer the cable box when asked. Many cable companies do not support HDMI/DVI, so they may not be any help other than to tell you to use component cables.

02-02-2006, 09:01 AM
So if I'm running everything into a Denon receiver which is HDCP compliant, what order do I need to start everything?

02-02-2006, 02:24 PM
Just a guess, but try this order. TV - Denon - Cable box.

My experence is with the higher end equipment there are not many HDCP problems, but the Denon will just echo what the TV responds with.

02-02-2006, 05:27 PM
Thought I would post this for anyone else out there having this same problem:

Why won't the set top box pass video signal through my receiver with an HDMI connection?

A set top receiver connected to an A/V receiver via HDMI may have trouble passing video signals through the A/V receiver even though a direct connection to the display seems to work fine. This has to do with the HDMI HDCP protocol being sent and received and the authentication process. This is not a fault of the receiver. Recently set top box manufacturers have become aware of this issue. It has been found that the U-code information appears to be the problem which is part of Annex A of the repeater conformity specifications of the HDMI protocol. Some set top receiver manufacturers have already implemented firmware changes to their units while others are in the process of updating their units. If a set top receiver being used is having problems passing HDMI video signal through an A/V receiver, contact the manufacturer of the set top receiver to see if an update is available.

This seems to especially be a problem with Scientific Atlanta 8300's although I suspect it is more widespread than that. Hopefully they'll get this fixed however Time Warner Cable just received a firmware update in December of 05 and it is still a problem.