Friday, May 08, 2009

Aptina's Work on Modulated Dual Conversion Gain CMOS Imagers

Xiangli Li from Aptina sensor characterization group published his Ph.D. dissertation "MOSFET Modulated Dual Conversion Gain CMOS Image Sensors". The dissertation is especially interesting in part describing the sensors characterization procedures and results.

14 comments:

  1. Link does not work right now.

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  2. Yes, it stopped working indeed. About the only thing I can propose is to look to the Google-cashed content (chose view as HTML):

    http://www.google.com/search?q=MOSFET+Modulated+Dual+Conversion+Gain+CMOS+Image+Sensors

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  3. One may wonder if that was your post that prompted the removal of the thesis from their website. Kind of quantum mechanics in action - observing can change the state.

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  4. Ph.D. dissertations are normally public domain information, and formerly available on microfilm. So, the missing link is indeed a mystery. Is it some sort of web accident or is it a misguided attempt at information suppression? Surely someone reading this blog knows. If it is an attempt to appease Aptina then it is shameful and against almost every university policy I have ever heard of.

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  5. Does not look like a web accident. If you look at the site where
    that group students and their work is listed,
    http://cmosedu.com/jbaker/students/students.htm
    the dissertation in question is not web-linked, and it the only one
    not linked of all the work listed there.

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  6. The link works for me every time.

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  7. I'm still getting:

    HTTP Error 404 - File or directory not found.

    The only explanation I have is that if somebody in your comapny already downloaded it when it was available, the file is kept somewhere in your company's proxy cash - so you get it directly from there. Then the download speed should be very fast - you can check it.

    Now, when Google cash has also expired, there is no trace of this file left on the web.

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  8. You are probably correct about the cache. The document opens almost instantly for me.

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  9. Would someone be willing to repost it if they have a copy?

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  10. I can upload it to one of file sharing services. However, I'm not sure about the copyright aspects of this.

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  11. Yes, please give the server a try. What I just noticed is that Li Xiangli is now listed with a different subject, which has nothing to do with sensors:

    Graduated Doctoral students

    Xiangli Li (2008, the first Boise State University College of Engineering PhD graduate) – MOSFET Modulated Dual Conversion Gain CMOS Image Sensors.pdf

    Feng (Dan) Lin (2000, University of Idaho) – Research and Design of Low Jitter, Wide Locking-Range Phase-Locked and Delay-Locked Loops.pdf

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  12. The most reasonable explanation is that the dissertation accidentally contains proprietary Aptina/Micron material in addition to the dissertation research and there is some on-going flap about it. Maybe someone did not exactly understand what can go in a dissertation that is mostly done at a private company, and what cannot. We had several Ph.D. theses done at Photobit (one from UCLA, a few from USC) and we were careful about the chosen line of research so we could avoid any ocnflicts. Well, just speculation about the "first Boise State University College of Engineering Ph.D." Practice makes perfect, perhaps?
    -EF

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  13. So, could anyone please upload this?

    Thx,
    D

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  14. Agreed, please upload a copy

    ReplyDelete

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