On 2/20/07, James Richard Tyrer <[EMAIL PROTECTED]> wrote:
My was that if software running on the computer can turn off HDCP for a
video card that the card would not meet the requirements. If software
can't turn it off, then the software does not need to be closed.
So, closed software is neither necessary nor sufficient to meet the
requirements. If that is the case, there is no reason that we could not
produce a board that could be licensed.
The license itself assumes the usage of closed software, and
prescribes the use of various techniques, such as code signing (this
is mandatory), to protect the code. If the software can't turn off
the HDCP, that means more logic would need to be implemented in
hardware. Plus, you have no way of allowing the software to signal
whether content is protected or not, and therefore must assume that
all content is protected. This is very contrary to the goals of OGP,
but to do otherwise would breach the terms of the license. So,
there's still no way to implement the scheme legally.
I don't know if these devices are legal but they appear to be made under
license. However those currently available strip HDCP off of a HDMI or
DVI signal so that it can be used with a monitor that doesn't support
it.
It's impossible that such devices are made under license, they defeat
the whole purpose of HDCP.
There have been reports of TVs that won't accept a HD signal over HDMI
unless it is HDCP encoded. As I said previously, we need to find out if
this is true.
Indeed, but it's not our problem if it is, since there's nothing that
can be legally done, and in terms of cracking (illegal, but only in
the US and places with similarly strict DMCA-like laws), HDCP seems to
be already fully broken. Plus, we wouldn't want to attempt to make an
unlicensed implementation of it, because that would probably make it
impossible to sell an OGC in certain countries.
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