Hi. On Sun, 11 Nov 2001 18:34:09 +0000 Jose Paulo Moitinho de Almeida <[email protected]> wrote:
> Hello > > Following my previous mail to the list I received some info, which may be > "just what we want". Do you mean the infos from me - or additional ones? > Those interested in participating in the development/testing of the avision > backend, so that it can use the scanners that are known to be manufactured by > avision, but are not supported by the current backend, please contact me. I took a deeper look into it last night: The color line difference can be found in bytes 53-59. But I do not know where the dark to full-scale gradient stripes come from. I only fill the half of the gamma-table (2048 of 4096 entries) - because more is not needed. Maybe the scanners generate values in this range to make it possible for the driver to calibrate s.th. (heavily guessed ...)?? > I think that we should prepare a structure to enable some kind of shared > development. Good ideas to achieve this are welcome and, as usual, someone > with lots of time to spare would be most usefull.... perhaps then we could do > without the list.... I would also be willing to adapt the code. (Also I have not that more time ...). Do you have additional information? btw. My AV630CS leaves most of the SCSI inquiry 0 ... - so I never had a chance to see all this entries ;-(. - So we need to add some more internal _states_ to handle all this variants of parameters ... Some people have stated that my backend keeps the kernel-module crashing - this doesn't seem to be true. As far as I can see the avision-backend's problem is only to do some color-channel correction and gamma-table computing. So the kernel-module should also be reviseted to not crash. (And even if my backend write imperfect combinations of bits, the kernel should not crash anyway). > The scanners in question are (please correct): > > - HP 7400 > - HP 5300 > - Minolta Scan Dual II > - ..... > > I just wonder if there are no "real" avision scanners that need/could benefit > >from an updated backend. None I know of (they do not sell USB scanners themselfes). > Regards > > Ze Paulo > > _______________________________________________ > Sane-devel mailing list > [email protected] > http://www.mostang.com/mailman/listinfo/sane-devel k33p h4ck1n6 René -- René Rebe (Registered Linux user: #127875 <http://counter.li.org>) eMail: [email protected] [email protected] Homepage: http://www.tfh-berlin.de/~s712059/index.html Anyone sending unwanted advertising e-mail to this address will be charged $25 for network traffic and computing time. By extracting my address from this message or its header, you agree to these terms.
