Minor changes to sync MMC-6 with Mt. Fuji 7

Bill McFerrin bmcferrin at dataplay.com
Tue Aug 19 14:22:18 PDT 2008

* From the T10 Reflector (t10 at t10.org), posted by:
* "Bill McFerrin" <bmcferrin at dataplay.com>
Dear Takahashi-san,
We intended to keep all of the HD DVD descriptions from MMC-5. That will
include HD DVD-ROM, HD DVD-RAM, and HD DVD-R (SL). It is my understanding
that there are no developers of the newer HD DVD disc types: HD DVD-R DL, HD
DVD-RW SL, and HD DVD-RW DL. Do you think it would be acceptable to exclude
these from MMC-6?
Kind Regards,
Bill McFerrin
-----Original Message-----
From: Hideki Takahashi [mailto:hidy.takahashi at toshiba.co.jp]
Sent: Tue 19-Aug-08 3:17 AM
To: mtfuji5 at avc-pioneer.com
Cc: 'T10'; Bill McFerrin
Subject: Re: Minor changes to sync MMC-6 with Mt. Fuji 7
Hello Berhan-san,
This is Hideki Takahashi of Toshiba.
As for your opinion about "obsolete" of HD DVD,
HD DVD part should NOT be "obsolete" from the specifications, we think.
I can partially understand your concern. For example, development of bus
analyzer requires much burden for testing.
So minimum specification may be better to minimize the additional job.
But the HD DVD specifications are under licensing now, although Toshiba
won't develop more as one company.
Any company who would like to make can develop HD DVD products.
Best Regards,
Hideki Takahashi
On Tue, 29 Jul 2008 15:57:49 -0700
Mike Berhan <mikeb at bustrace.com> wrote:
> Bill,
> With MMC-6 under development, and Mt. Fuji 7 released, I wanted to note the
> following issues:
> 1.)  MMC-6 5.3.35 defines Version 0 of the HD DVD Read (0050h) Feature
> Descriptor.  Mt. Fuji 7 defines Version 2.
> 2.)  MMC-6 5.3.36 defines Version 0 of the HD DVD Write (0051h) Feature
> Descriptor.  Mt. Fuji 7 defines Version 2.
> Regarding #1 and #2 above, with HD-DVD no longer being developed, should
> HD-DVD references be removed and replaced with an "Obsolete" note?  This
> would resolve #1 and #2 above as you can delete the entire sections and
> simply state that they're obsolete (as well as other HD-DVD sections in the
> specification).
> 3.)  MMC-6 5.3.45 defines Version 4 of the Real Time Streaming (0107h)
> Feature Descriptor.  Mt. Fuji 7 defines Version 5.
> 4.)  MMC-6 5.3.51 defines Version 0 of the AACS (010Dh) Feature Descriptor.
> Mt. Fuji 7 defines Version 1.
> 5.)  MMC-6 5.3.32 defines Version 0 of the BD Read (0040h) Feature
> Descriptor.  However, Version 1 of this descriptor is in use by shipping
> drives today.  Version 1 adds the "BCA Read" flag.  Can this be added for
> the next MMC-6 update?
> Unrelated to the above, if there is any ODD vendor that supports the new
> MMC-6 OSSC Feature Descriptor (0142h), and if you would like to work
> together to add support for this feature, please contact me privately.
> -------
> Mike Berhan
> busTRACE Technologies
> 9700 Village Center Drive
> Suite 50-F
> Granite Bay, CA  95746
> 916.773.4554 phone
> 916.218.6283 fax
> http://www.bustrace.com
   Hideki Takahashi
   New DVD Division,
   TOSHIBA Corp.
     E-MAIL: hidy.takahashi at toshiba.co.jp
     TEL: +81-45-770-3895      FAX: +81-45-770-3189
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