[linux-dvb] Re: CAM interfacing.

["Robert Schlabbach" <robert_s@gmx.net>]

Yeah, Andrew and I already got a taste of that. We tried 3 different CAMs
so far (Andrew tried one, I tried two others), and they all behave
differently on the physical layer already. One type of CAM, Neotion's
Free-X TV / ZetaCAM, is downright physically _incompatible_ with the
Budget-CI and cannot be used with it (I sent in my Budget-CI and CAM to TT
and they confirmed that it doesn't work and that there is no software
workaround possible).

We've been figuring out an initialisation method which works for the CAMs
we have (Neotion's only until the first I/O access, at which it no longer
works right), but it's possible that other CAMs may behave in non-standard
ways we haven't experienced yet. EN50221 must be one of the most violated
standards in existence. I wonder why manufacturers have such difficulties
understanding it... :(

Regards,
--
Robert Schlabbach
e-mail: robert_s@gmx.net
Berlin, Germany

----- Original Message -----
From: "Jerico Webmail" <jerico@jerico.demon.co.uk>
To: <linux-dvb@linuxtv.org>
Sent: Saturday, March 27, 2004 11:40 PM
Subject: [linux-dvb] CAM interfacing.


> Hi,
>
> With respect to CAM's, I don't know how much of a discussion has been
made about
> interfacing with different manufacturers modules but having been in the
> position to speak to a number of manufacturers I thought I might just
feed back
> a point that many have them made.
>
> Aparently interoperability is one of the biggest challenges of working
with
> CAM's. A French developer has had great challeges implementing decoding
of
> Conax despite having already integrated another CA system into their
product.
> Also an associate at Conax has said to me that they often exchange
hardware
> prototypes with developers just so they can ensure correct compatability.
>
> So just be aware that not all CAM's talk the same way as we would like
them to
> do.
>
> Bob




-- 
Info:
To unsubscribe send a mail to ecartis@linuxtv.org with "unsubscribe linux-dvb" as subject.