MFD> Scan Service Sectionr 10

MFD> Scan Service Sectionr 10

MFD> Scan Service Sectionr 10

Ira McDonald blueroofmusic at gmail.com
Sun Feb 1 22:27:46 EST 2009


Hi Bill and Pete.

Bill - I like all of your new text.

However, there are two serious problems in existing text:

(1) Second paragraph at line line 5 of page 2 is just wrong

It is a StartupScanService operation (spelled that way) sent
to a System (NOT a ScanService) that creates a new instance
of a ScanService in the Initial phase, causes self-test, and finally
transition to Online phase / Idle state.  The ScanService itself
does NOT perform a start-up operation (line 7).  It is handling
the single E.startup *event* sent to it by the System (while in
in the Initial phase / Unknown state).

If we keep it, a RestartScanService operation could be sent
to a ScanService (to recover from a Shutdown to Offline
phase / Down state).  See the notes on lines 1628 to 1639
on pages 66 and 67 of lcrc-mfdscanmodel10-20090119.pdf


(2) Recurring problem of reading the terms in state tables

The notation key in the Scan Service spec for the state table
is at line 1618 page 66 in lcrc-mfdscanmodel10-20090119.pdf

For example at line 12 in page 2 of your draft, we see:

   "...either a C.Critical event is generated"

The expression "C.Critical" means a *passive* Condition (C)
(i.e., a ScanService.StateReasons value) is TRUE that a Critical
alert is now pending.  While, the expression "~C.Critical" means
that any NOT (~) Critical Condition is now pending.

The expression "E.Critical" means that an *active* Event (E)
that is Critical has just occurred.  Conversely "~E.Critical" means
that any non-Critical (i.e., warning) event has just occurred.

So "C.Critical event" is confused.

Cheers,
- Ira

Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
Blue Roof Music/High North Inc
email: blueroofmusic at gmail.com
winter:
  579 Park Place  Saline, MI  48176
  734-944-0094
summer:
  PO Box 221  Grand Marais, MI 49839
  906-494-2434



On Fri, Jan 30, 2009 at 4:26 PM, William A Wagner <wamwagner at comcast.net> wrote:
> Considering the decisions at yesterday's conference call with respect to
> "submitting a job", I modified the proposed rework of Section 10 of the Scan
> Service document. This rework (only in markup) is posted as
> ftp://ftp.pwg.org/pub/pwg/mfd/white/ScanServiceTheoryOfOp-revB.pdf.
>
>
>
> Thanks,
>
>
>
> Bill Wagner
>
>
>
> From: owner-mfd at pwg.org [mailto:owner-mfd at pwg.org] On Behalf Of Zehler,
> Peter
> Sent: Thursday, January 29, 2009 1:38 PM
> To: mfd at pwg.org
> Subject: MFD> Update to Agenda for MFD Teleconference, Thursday 1/29 3:00
> EDT
>
>
>
>
>
> There will be an MFD conference call at 3:00 PM EDT (12:00 PM PDT) this
> Thursday.  The meeting is held in accord with the PWG Intellectual Property
> Policy.
>
>
>
> Note the NEW Teleconference number and access code are now used.
>
> Please contact me if you do not have the new number and pass code.
>
>
>
> Agenda:
>
> 1. Identify Minute Taker
>
> 2. Approval of minutes from last teleconference
>
>         <ftp://ftp.pwg.org/pub/pwg/mfd/minutes/pwg-mfd-minutes-20090115.pdf>
>
> 3. Agenda bashing
>
> 4. Discuss syntax of JobPhoneNumber on line 2182 of Scan specification
>
> 5. Discuss open ended REQUIREMENT governed by a third party (End User)
> policy on line 2788-2790 of Scan specification
>
> 6. Discuss Bill's comments on in Resource Service
>
>
> <ftp://ftp.pwg.org/pub/pwg/mfd/white/nancy-Proposed-Resolution-for-Bill-W-comments-for-Resource-Service-20090127.pdf>
>
>       b) Discussion of Testing State, transition in and out, and method of
> transition   Part of both Resource and Scan Service discussion)
>
> 7. Discussion on Scan Service State and proposed change to section 10 of the
> specification
>
>       a) Chose between the existing text, proposed text or arrive at some
> other consensus.
>
>          Existing text is section 10
> <ftp://ftp.pwg.org/pub/pwg/mfd/wd/lcrc-mfdscanmodel10-20090122.pdf>
>
>          Proposed change is available at
> <ftp://ftp.pwg.org/pub/pwg/mfd/white/ScanServiceTheoryOfOp.pdf>
>
> 8. Discuss any comments on the Resource Service interim draft.  Objective is
> to move to the Last Call version for review at the Face to Face.
>
>       <ftp://ftp.pwg.org/pub/pwg/mfd/wd/wd-mfdresourcemodel10-20090115.pdf>
>
> 9. Next steps
>
>
>
> Click Here to Join Live Meeting
> <https://www.livemeeting.com/cc/xerox/join?id=PWG_MFD&role=attend&pw=PQ%25%3EFj5sN>
>
>
>
>
>
>
>
>
>
>
>
>
> Peter Zehler
>
> Xerox Research Center Webster
> Email: Peter.Zehler at Xerox.com
> Voice: (585) 265-8755
> FAX: (585) 265-7441
> US Mail: Peter Zehler
> Xerox Corp.
> 800 Phillips Rd.
> M/S 128-25E
> Webster NY, 14580-9701
>
>



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