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    • CommentRowNumber1.
    • CommentAuthorzskoda
    • CommentTimeJul 3rd 2011
    • (edited Jul 3rd 2011)

    I had dreamed for many years about making recordings of lectures and presentations which would include only the path of a electronic pen, together with timing inforation, and together with synchronized voice. The paths are 1-d and to have the same precision as video you need much less memory, what saves bandwidth if used as a videoconferencing device or when sending files and storage if saved as a record. Fro videoconferencing shared whiteboards exist, but the recording of this together with voice is not standard. For offline record of the lectures, I posted my thoughts some time ago to MathOverflow here and got a response that for offline recording there is a version of my idea by 2009. The records are called PENCASTS, and the tradename which sells “echo pen” with such software is Livescribe. We should try this. Maybe pencast lectures would be very nice to lecture on category theory. The videos are usually huge and resolution of blackboard bad, while the interactive filling of a categorical diagram is far more instructive than static scans.

    http://matei.org/ithink/2009/03/11/i-believe-his-name-is-livescribe-pulse-pencast

    http://www.livescribe.com/en-us/smartpen/send_and_share.html

    http://www.gizmag.com/embedding-pencasts/11682

    http://www.livescribe.com/cgi-bin/WebObjects/LDApp.woa/wa/CommunityOverviewPage

    Lots of info is on google, but somebody should investigate what is all this in mathematical presentation practice. What is a typical file size and quality for 60 minutes of presentation (of say category theory). I am considering buying the device later this summer if I see that it is the best for me. It should be compared also to the software available for usual electronic tablets, and see if one can record this way and white-board conference the material simultaneously in real time. Also extremely important: if one can paste together separately recorded parts of presentation as a single stream.

    I should have patented this over 10 years ago when I started dreaming this :)

    There is a more general overview of this and similar technologies

    • Dr. Jenelle Benson, Emerging Technology Trial 2011 Digitizing paper-based instruction with smartpens and pencasting, pdf, Final Report for Australian Flexible Learning Framework (flexiblelearning.net.au), Learning Network Queensland / Queensland VET Development Centre, Australia June 2011
    • CommentRowNumber2.
    • CommentAuthorzskoda
    • CommentTimeJul 3rd 2011
    • (edited Jul 3rd 2011)

    I created a related page at Azimuth Project Remote conferencing and posted a discussion in Azimuth Forum here.

    • CommentRowNumber3.
    • CommentAuthorDavidRoberts
    • CommentTimeJul 4th 2011

    While it looks nefarious, you could always look at http://www.graffitimarkuplanguage.com/. I don’t know how it would go storing hour-long captures, though. Ideally, one could just use it for commuting diagrams, and leave the ordinary text in a more traditional format. The technology for capturing the data is in its infancy, but as you can see at the link, there is a competition to engineer a compact device for recording gml data.

    • CommentRowNumber4.
    • CommentAuthorzskoda
    • CommentTimeJul 4th 2011

    The most important is that the sound and the trace of the pen are synchronous and that the data are compact. I don’t think that the text should be in traditional format, i.e. typed. I can never type things n an informal manner of actual blackboard writing, namely when I have more time to think I get into detailed thinking, and not outline style of lectures, for which it is important that the text is produced fast and the notes taken in the speed of speaking, with unimportant phrases left out. If one really wants to learn the things fast one should convey the conference style faithfully. Once people come with typed slides they have MORE info than the actual pace of blackboard lecturing allows and they are typically incomprehensible or overwhelming.

    • CommentRowNumber5.
    • CommentAuthorzskoda
    • CommentTimeJul 4th 2011

    One problem with Livescribe is that it is bundled. One would like to have the sound recording from one device and the pen data from any other electronic tablet or alike and combine them by th software. One needs good software taking wide variety of hardware and not the single packet where all things from software to the headphones and the pen, and even paper and ink (here you do not write on tablet but on actual paper) are from a single vendor.