lack of a requirement
ai.takaharu at jp.panasonic.com
Wed Aug 2 22:18:58 PDT 2006
* From the T10 Reflector (t10 at t10.org), posted by:
* Takaharu Ai <ai.takaharu at jp.panasonic.com>
Let me confirm again.
Is the preservation of the recorded user data the requirement for Fast
Re-formatting or not?
If you think it is the requirement, please let all Mt.Fuji members know
the technical reason why it is mandatory.
Panasonic AVC Networks Company
---------------- Start of the original message ----------------
>From: keiji_katata at post.pioneer.co.jp
>To: mtfuji5 at avc-pioneer.com
>Cc: t10 at t10.org
>Date: Thu, 03 Aug 2006 13:54:51 +0900
>Subject: Re: lack of a requirement
>Hi Ai san,
>I did not write the requirement. This requirement is not specific for the
>Re-format. As you pointed out, Close Session and Grow Border have the
>capability. There is only some differences between Fast Re-format and others
>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
>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
>Here, there are two ways.
>Case 1. User used a PC system that accepts Fully formatted UDF 2.00 RW-DL
>to write the Picture files. In this case, user must use DVD VR format to
>the video data.
>Case 2. User used the same CE Recorder to add the Picture files on to the
>disc. In this case, user may use ISO/UDF bridge and DVD Video format to
>the video data. Some PC software also may support the data appending on to
>Layer Jump Recorded RW-DL disc too.
>For the case 1, Grow Border format and Fast Re-format is usable. When OR0
>OR1 are located at outermost of the disc Fast Re-format guarantees the
>formatting time. Fast Re-format descriptors can tell the disc condition to
>via Read Format Capacity command.
>Please do not talk about file system and DVD data format that user must
>at the beginning. This is not item of MMC command set.
>Takaharu Ai <ai.takaharu at jp.panasonic.com>@avc-pioneer.com on 2006/08/01
>mtfuji5 at avc-pioneer.com$B$KJV?.$7$F$/$@$5$$(B
>$BAw?.<T(B: owner-mtfuji5 at avc-pioneer.com
>$B08 at h(B: mtfuji5 at avc-pioneer.com
>cc: t10 at t10.org
>$B7oL>(B: lack of a requirement
>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?
>Panasonic AVC Networks Company
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