[mpeg-OTspec] RE: Time zone ambiguity

[Thomas Phinney]

That seems like a most excellent clarification.  :)


On Fri, Aug 29, 2014 at 8:58 AM, 'Levantovsky, Vladimir'
vladimir.levantovsky at monotype.com [mpeg-OTspec] <
mpeg-OTspec-noreply at yahoogroups.com> wrote:

>
>
>  Hi Dave,
>
>
>
> Thank you for bringing this up. I don’t think adding a clarifying note
> about UTC/GMT time zone would be an issue, I would let people in this group
> to consider the possible implications of such change and, if no objections
> are raised – I will add this clarification as one of the ballot comments.
>
>
>
> Thank you,
>
> Vladimir
>
>
>
>
>
> *From:* mpeg-OTspec at yahoogroups.com [mailto:mpeg-OTspec at yahoogroups.com] *On
> Behalf Of *'Opstad, Dave' dave.opstad at monotype.com [mpeg-OTspec]
> *Sent:* Friday, August 29, 2014 11:46 AM
> *To:* mpeg-OTspec at yahoogroups.com
> *Subject:* [mpeg-OTspec] Time zone ambiguity
>
>
>
>
>
>
>  There is an ambiguity in the original TrueType spec that has,
> unfortunately, continued right up to this latest OFF spec. Specifically, in
> the 'head' table, the "modified" and "created" fields are listed as 64-bit
> counts of seconds since an epoch of "12:00 midnight, January 1, 1904".
> Unfortunately no time zone is specified, and this has led to ambiguity
> where a font is modified by some tool in, say, Germany, and is then run
> through validation code in California, where a complaint is raised that
> "the modification date is in the future".
>
>
>
> I wonder if it would be possible to include a clarifying note in the spec
> that GMT/UTC is the time zone of choice for these fields?
>
>
>
> Cheers,
>
> Dave
>
>
>
> *From: *<'Levantovsky>, "Vladimir' vladimir.levantovsky at monotype.com
> [mpeg-OTspec]" <mpeg-OTspec-noreply at yahoogroups.com>
> *Reply-To: *"Levantovsky, Vladimir" <Vladimir.Levantovsky at monotype.com>
> *Date: *Monday, August 25, 2014 9:24 AM
> *To: *"mpeg-OTspec at yahoogroups.com" <mpeg-OTspec at yahoogroups.com>
> *Subject: *[mpeg-OTspec] AHG Kick-off and the new mandate
>
>
>
>
>
> Dear AHG members,
>
>
>
> I am happy to report that the text of the 3rd edition of ISO/IEC 14496-22
> “Open Font Format” standard has been promoted to Draft International
> Standard stage and the ballot is now published. The text has been made
> public and can be downloaded for review using the following link:
>
>
> http://mpeg.chiariglione.org/standards/mpeg-4/open-font-format/text-isoiec-dis-14496-22-3rd-edition
>
>
>
> The AHG mandate is “to study the DIS of the ISO/IEC 14496-22 3rd edition
> and solicit technologies to further improve it”. I would like to ask you to
> review the text and provide your suggested changes which can be
> incorporated as ISO ballot comments. At this stage, we can only suggest
> comments that incorporate clarifications and improvements to what is
> already included in the standard, proposals for new technologies can be
> considered as future new work items and would require an amendment.
>
>
>
> Thank you very much for your contributions!
>
> Vladimir
>
>
>
>
>
>
>     
>



-- 
“If friendship is magic, then any sufficiently advanced technology is
indistinguishable from friendship.”
—Shanna Germain (after Arthur C. Clarke)
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