lack of a requirement

[keiji_katata at post.pioneer.co.jp]

* From the T10 Reflector (t10 at t10.org), posted by:
* keiji_katata at post.pioneer.co.jp
*
Hi Ai san,
I did not write the requirement. This requirement is not specific for the
Fast
Re-format. As you pointed out, Close Session and Grow Border have the similar
capability. There is only some differences between Fast Re-format and others
as
I wrote.
The typical scenario of the Fast Re-format is as follows.
User took a video of an event by Handy Cum Recorder that does not use DVD
disc.
User connected the Handy Cum Recorder to CE DVD recorder.
User recorded the video on to a DVD-RW DL disc.
Notes: CE DVD Recorder is one of the good equipment to make a MPEG file.
User added Pictures of the event taken by Digital Camera on to the RW-DL
disc.
Here, there are two ways.
Case 1. User used a PC system that accepts Fully formatted UDF 2.00 RW-DL
disc
to write the Picture files. In this case, user must use DVD VR format to
record
the video data.
Case 2. User used the same CE Recorder to add the Picture files on to the
RW-DL
disc. In this case, user may use ISO/UDF bridge and DVD Video format to
record
the video data. Some PC software also may support the data appending on to
the
Layer Jump Recorded RW-DL disc too.
For the case 1, Grow Border format and Fast Re-format is usable. When OR0 and
OR1 are located at outermost of the disc Fast Re-format guarantees the
shortest
formatting time. Fast Re-format descriptors can tell the disc condition to
host
via Read Format Capacity command.
Please do not talk about file system and DVD data format that user must
select
at the beginning. This is not item of MMC command set.
Best regards,
Keiji Katata
PIONEER CORP.
Takaharu Ai <ai.takaharu at jp.panasonic.com>@avc-pioneer.com on 2006/08/01
14:57:40
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$B7oL>(B:  lack of a requirement
Hello Katata-san,
I have one question.
According to your explanation in June Mt.Fuji meeting, one more
requirement existed which was requested by Host people. The requirement
was that the recorded user data must be preserved through the fast
re-formatting, because the data would be used after re-formatted.
But in your new document, it is not listed in the requirements from the
Host people. Is this requirement withdrawn by the Host people?
If it is your mistake and the requirement is still alive, please revise
your proposal document to add it and add the explanation how the Host
uses the recorded user data after the re-formatting.
It becomes very unclear for me how to achieve re-using the recorded data,
because you explained that Read-only file system was applied to Layer
Jump Recording, UDF2.01 was applied to fully formatted disc and UDF 2.00
with DVD-VR format was applied to Quick formatted, i.e. Intermediate
state, disc. It looks that this file system and disc format state
combination requests the recording system to change the applied file
system according to the new format state via the re-formatting process,
if the disc state is changed by the fast re-formatting. How are the
files in the old file system re-used in the new file system?
Best Regards,
Harry Ai
VEBU
Panasonic AVC Networks Company
Matsushita/Panasonic
Osaka, Japan
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