Saturn protection thread resurrected on cdfreaks

[vbt]

2. ring comparison


several rings from different region CDs were dumped on different machines with swap method. on raw sector level (2352 bytes) they mostly are all the same. (matching with pinchy's data) one could start or cut out sooner, but it's probably like leading and trailing buffer zones. area with copyright message was always the same - untouched by those differences. subchannel offsets for ring differ.


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3. ring data analysis


an program was created to do data interleaving/deinterleaving as defined in ECMA-130 Annex C

http://www.mediafire.com/?nryjjzwv9yx


with it, it was possible to determine ring track widh. it's exactly 21 sector for Sega Saturn (11 sectors for similar zone on Dreamcast GDs) now, with this value known, total ring tracks could be calculated: filesize / (2352*21) ~1460


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several scaling algorithms and sector modifications were tested on 650mb CD-RW. with no results. but this way to mimic ring is generally very rough, so it could be expected.


cleaned ring data, that was used for scaling can be downloaded here:

http://www.mediafire.com/?na6oybjaam8


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and as a last note, if they are to any use to anyone, sources of those programs posted earlier are available here:

http://www.mediafire.com/?0joblmsqvl1

http://club.cdfreaks.com/f52/copy-protections-sega-saturn-59813/index17.html

 

[SeGaFrEaK_NL]

Don't get your hopes up, but hey there might be a breakthrough to this soon. I sure hope so!

 

[Runik]

Up !

Nothing new on the Saturn protection directly, but I came across a new Lite On It burner with "LabelTag" technology, which allows to write text on the outer ring of a DVDR ... I'm not sure it works on a CDR, but that's interesting nevertheless

More info on this technology here

 

[Gravis]

Nothing new on the Saturn protection directly, but I came across a new Lite On It burner with "LabelTag" technology, which allows to write text on the outer ring of a DVDR ... I'm not sure it works on a CDR, but that's interesting nevertheless

my understanding is that the firmware inside the drive is responsible for translating the given data (image? text?) into showing up on the disc. basically, you wouldnt have control of exactly what it's burning because that would require various software based calculations that would get screwed up from drive model to drive model. cd drives dont act as uniformly as one would think.