[opendtv] Re: Microsoft and the broadcast flag
- From: "John Willkie" <johnwillkie@xxxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 10 Jul 2008 09:48:35 -0700
All have been discussed in due course.
* PBDA is the secure path implantation of the Microsoft Broadcast
Driver Architecture that many tuners, etc use.
* CGMS is CopyGuard Management System that transmits (among other
elements) copy never/copy once/copy all in analog or digital closed captions
either in line 21 (analog) or packetized in video elementary streams
(digital)
* I think you made up RCD
* rc_descriptor is what the (mostly fools) call a broadcast flag
* BF is a reference to broadcast flag
* BPF what the fools at MS use to refer to CGMS, or perhaps on other
days, the rc_descriptor.
I am available on a consulting basis, Dan. :-) And, there aren't too many
of 'us' that are unaffiliated with media/electronics empires.
John Willkie
_____
De: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] En
nombre de dan.grimes@xxxxxxxx
Enviado el: Thursday, July 10, 2008 9:19 AM
Para: opendtv@xxxxxxxxxxxxx
Asunto: [opendtv] Re: Microsoft and the broadcast flag
PBDA
CGMS
RCD
rc_desriptor
BF
BPF
I'm confused!
Dan
John Willkie <johnwillkie@xxxxxxxxxxxxx>
Sent by: opendtv-bounce@xxxxxxxxxxxxx
07/09/2008 04:20 PM
Please respond to
opendtv@xxxxxxxxxxxxx
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Subject
[opendtv] Re: Microsoft and the broadcast flag
when you assume, you make an ass out of u and me. And, technically, you are
presuming, not assuming.
You are using a bert technique to invert what someone said to support a
preconceived, badly-thought (or no thinking involved) position.
And, you will find out that you can't use a device on Vista that doesn't
support PBDA. But, PBDA 'protection' isn't invoked until after CGMS is
encountered in a program stream.
And, just what is a MSFT device? They make Zune, Xboxes, I think they still
make mice. They don't make computers, nor do they make usdio devices. Was
this typed after the beginning of happy hour in the Barry household?
That's the only rational explanation for so many errors of thought,
perception and understanding in such a short post. Perhaps rationality
isn't a precondition?
Once again, something is happening here, and you don't know what it is, do
you, Mr. Jones?
John Willkie
-----Original Message-----
>From: Tom Barry <trbarry@xxxxxxxxxxx>
>Sent: Jul 9, 2008 3:45 PM
>To: opendtv@xxxxxxxxxxxxx
>Subject: [opendtv] Re: Microsoft and the broadcast flag
>
>I assume it is a flag meaning you need a non-MSFT device and/or software
>to record the stream.
>
>- Tom
>
>Adam Goldberg wrote:
>> I confess, I'm not at all clear on what they mean by "broadcast
protection
>> flag".
>>
>> I would understand if they wrote about "Broadcast Flag". Except in this
>> case they talk about what HBO is doing -- so that's clearly NOT what they
>> mean. HBO doesn't broadcast ATSC OTA, so whatever they mean it isn't the
>> Broadcast Flag (because HBO /cannot/ assert the BF, as it's an A/65-only
>> construct).
>>
>> Furthermore, "... indicate that the show is copy protected" means, among
>> other things, that we're NOT talking about the BF (which does NOT signal
>> copy protection).
>>
>> They could be defining "broadcast protection flag" as CGMS={copy never}
or
>> CGMS={copy never | copy once}. But I dunno.
>>
>> -----Original Message-----
>> From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]
On
>> Behalf Of Manfredi, Albert E
>> Sent: Wednesday, July 09, 2008 3:32 PM
>> To: opendtv@xxxxxxxxxxxxx
>> Subject: [opendtv] Re: Microsoft and the broadcast flag
>>
>> There are any number of Microsoft references that show that WM applies
>> some sort of copy protection filtering for CGMS and Broadcast Flag
>> encoded TV streams, at least over Vista. But I was looking for something
>> that stated explicitly that, according to Microsoft, the BF means that
>> the content must not be copied.
>>
>> So, even the most unabashed of self-important fools can now understand
>> that what is transmitted with the BF flag asserted is treated, by
>> current WMP, as if it were CGMS copy-never.
>>
>> The result being, even if FOTA DTV broadcasters in principle "don't
>> intend" the BF to violate the Betamax decision, when playing through
>> Vista, it does.
>>
>> --------------------------------
>> http://www.microsoft.com/windows/windowsmedia/player/faq/sync.mspx
>>
>> Q. Why can't I sync some of my TV shows to my device?
>>
>> A. Television broadcasters can prevent you from synchronizing a show to
>> a device by setting a "broadcast protection flag" for the show.
>> Currently, HBO sets the flag for some programming, and other
>> broadcasters might begin using the flag in the future. If you cannot
>> sync a certain show to your device, check the program information for
>> the show on your computer. If the broadcaster has set the broadcast
>> protection flag, the listing will indicate that the show is
>> copy-protected.
>> --------------------------------
>>
>> Or, to use the 2X4-on-the-head technique, as far as Microsoft is
>> concerned, the Redistribution Control Descriptor is to be interpreted as
>> "copy never."
>>
>> The FCC should perhaps send them a note.
>>
>> Bert
>>
>>
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>
>--
>Tom Barry trbarry@xxxxxxxxxxx
>
>
>
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