Laserlock/Laserlok
From Redump Wiki
Ring based Protection with multiple (12-22) rings. Standard dumping methods apply as per http://wiki.redump.org/index.php?title=Ringed_Disc_Dumping_Guide.
Rings exist in multiple configurations and can be found either at the start or end of disc depending on version. Sometimes they will also have single ring sectors in between the actual rings like in http://redump.org/disc/113120/.
Code in PVD gives info, example:
SNVI1693
SN manufacturer
VI publisher
1693 id number
Laserlock Patterns
Unlike many other ring based protections there is a rough method to tell exactly how large each ring is.
Using http://redump.org/disc/30979/ as an example.
- 2099-2176
- 2474-2551
- 2849-2926
- 3224-3301
- 3599-3676
- 3974-4051
- 4274-4351
- 4574-4651
- 4874-4951
- 5174-5251
- 5549-5626
- 6224-6301
Notice how each ring starts on either a 4 or 9 and ends on either a 6 or 1. This is known as a Laserlock pattern and is believed to be an artefact of the mastering process for these discs. Finding it using our current dumping methods takes a lot of time though. And it is currently not something we ask of dumpers.
