Multi-Function Device Modeling: Re: MFD> Scan Service Sectionr 10

Re: MFD> Scan Service Sectionr 10

From: Ira McDonald (blueroofmusic@gmail.com)
Date: Sun Feb 01 2009 - 22:27:46 EST

  • Next message: William A Wagner: "RE: MFD> Scan Service Sectionr 10"

    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@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@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@pwg.org [mailto:owner-mfd@pwg.org] On Behalf Of Zehler,
    > Peter
    > Sent: Thursday, January 29, 2009 1:38 PM
    > To: mfd@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@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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