http://fileformats.archiveteam.org/index.php?action=history&feed=atom&title=Blots 2026-04-18T09:53:46Z Revision history for this page on the wiki MediaWiki 1.19.2 http://fileformats.archiveteam.org/index.php?title=Blots&diff=44795&oldid=prev 2023-08-05T18:58:33Z

<p></p> <table class='diff diff-contentalign-left'> <col class='diff-marker' /> <col class='diff-content' /> <col class='diff-marker' /> <col class='diff-content' /> <tr valign='top'> <td colspan='2' style="background-color: white; color:black;">← Older revision</td> <td colspan='2' style="background-color: white; color:black;">Revision as of 18:58, 5 August 2023</td> </tr><tr><td colspan="2" class="diff-lineno">Line 32:</td> <td colspan="2" class="diff-lineno">Line 32:</td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [git://len.falken.directory/code/blots.git git repository]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [git://len.falken.directory/code/blots.git git repository]</div></td></tr> <tr><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [https://web.archive.org/web/20201109041139/https://github.com/lf94/blots archive of previous github]</div></td><td class='diff-marker'>&#160;</td><td style="background: #eee; color:black; font-size: smaller;"><div>* [https://web.archive.org/web/20201109041139/https://github.com/lf94/blots archive of previous github]</div></td></tr> <tr><td colspan="2">&#160;</td><td class='diff-marker'>+</td><td style="background: #cfc; color:black; font-size: smaller;"><div><ins style="color: red; font-weight: bold; text-decoration: none;">* [https://github.com/lf94/blots/issues/2 comparison with other formats]</ins></div></td></tr> </table>

Parchivist http://fileformats.archiveteam.org/index.php?title=Blots&diff=44793&oldid=prev 2023-08-05T18:45:09Z

<p>Created page with &quot;{{FormatInfo |formattype=physical |subcat=Bar codes |image=Blots-sample.png‎ }} &#039;&#039;&#039;Blots&#039;&#039;&#039;, A simple paper-based storage project &#039;&#039;&#039;IT DOES NOT HAVE A DECODER&#039;&#039;&#039; The B...&quot;</p> <p><b>New page</b></p><div>{{FormatInfo<br /> |formattype=physical<br /> |subcat=Bar codes<br /> |image=Blots-sample.png‎<br /> }}<br /> <br /> '''Blots''', A simple paper-based storage project<br /> <br /> <br /> '''IT DOES NOT HAVE A DECODER'''<br /> <br /> <br /> The Blots format aims to be simple for self-preservation. Implementation can be done in a night. It aims to incorporate simple error correction (anti-decay), alignment, anti-dirt and to be somewhat dense.<br /> <br /> It achieves these with simple XOR parity bits, an &quot;alignment component&quot; located at the top left, no use of black, and storing 2-bits per dot using 4 colors: red, green, blue and white (or absence of ink).<br /> <br /> The format is also semi &quot;anti-fold&quot;, meaning folding should not cause too many problems. This is because of how data blocks are arranged:<br /> <br /> * [a1][a2][p2]<br /> * [p1][b1][b2]<br /> <br /> <br /> Each byte is broken into 4 pieces, and then those 4 pieces divided into two groups: a and b.<br /> <br /> Each group has its own parity bits, for reconstruction.<br /> <br /> Because of the way they are arranged, folding may destroy some data on one line, but not the other.<br /> <br /> <br /> <br /> == Links ==<br /> * [git://len.falken.directory/code/blots.git git repository]<br /> * [https://web.archive.org/web/20201109041139/https://github.com/lf94/blots archive of previous github]</div>

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