3 ms·

Interesting...3DO is sensitive enough to know brand of blank CD and how fast the image was burnt? Besides the wobble detection on the PSX, are there any other

by spxneo 2y ago

Interesting...3DO is sensitive enough to know brand of blank CD and how fast the image was burnt? Besides the wobble detection on the PSX, are there any other consoles that have these innate security features built in? I know that its still impossible to burn a Black CD PSX to this day.

wk_end 2y ago
It doesn’t “know” - it’s not a security measure - but CD-Rs are harder for a disc drive to read. And the lasers in these old machines are losing power over time as their physical components (e.g. caps) decay, which make them more sensitive to this.
- shiroiushi 2y ago
  >And the lasers in these old machines are losing power over time as their physical components (e.g. caps) decay That should be pretty easy to fix with a soldering iron.
  - lelanthran 2y ago
    >> And the lasers in these old machines are losing power over time as their physical components (e.g. caps) decay > That should be pretty easy to fix with a soldering iron. Depends. Some of those caps are extremely small, surface mounted and placed very near other components. I've done it, but it ain't easy.
    - Kirby64 2y ago
      Old machines typically didn’t use ceramic capacitors, though. You’d be limited to film or more likely electrolytic capacitors. They only get so small and are typically leaded, especially for older stuff.
andrewf 2y ago
I was curious myself. "A blank CD-R is not "empty"; the pregroove has a wobble (the ATIP), which helps the writing laser to stay on track and to write the data to the disc at a constant rate. Maintaining a constant rate is essential to ensure the proper size and spacing of the pits and lands burned into the dye layer. As well as providing timing information, the ATIP (absolute time in pregroove) is also a data track containing information about the CD-R manufacturer, the dye used, and media information (disc length and so on). The pregroove is not destroyed when the data are written to the CD-R, a point which some copy protection schemes use to distinguish copies from an original CD." -- https://en.wikipedia.org/wiki/CD-R https://en.wikipedia.org/wiki/CD-R And/or: "Some hardware compatible with Red Book CDs may have difficulty reading CD-Rs and, because of their lower reflectivity, especially CD-RWs."
- deleted 2y ago
  [deleted]

by spxneo 2y ago

wk_end 2y ago

It doesn’t “know” - it’s not a security measure - but CD-Rs are harder for a disc drive to read. And the lasers in these old machines are losing power over time as their physical components (e.g. caps) decay, which make them more sensitive to this.

shiroiushi 2y ago
>And the lasers in these old machines are losing power over time as their physical components (e.g. caps) decay That should be pretty easy to fix with a soldering iron.
- lelanthran 2y ago
  >> And the lasers in these old machines are losing power over time as their physical components (e.g. caps) decay > That should be pretty easy to fix with a soldering iron. Depends. Some of those caps are extremely small, surface mounted and placed very near other components. I've done it, but it ain't easy.
  - Kirby64 2y ago
    Old machines typically didn’t use ceramic capacitors, though. You’d be limited to film or more likely electrolytic capacitors. They only get so small and are typically leaded, especially for older stuff.

andrewf 2y ago

I was curious myself. "A blank CD-R is not "empty"; the pregroove has a wobble (the ATIP), which helps the writing laser to stay on track and to write the data to the disc at a constant rate. Maintaining a constant rate is essential to ensure the proper size and spacing of the pits and lands burned into the dye layer. As well as providing timing information, the ATIP (absolute time in pregroove) is also a data track containing information about the CD-R manufacturer, the dye used, and media information (disc length and so on). The pregroove is not destroyed when the data are written to the CD-R, a point which some copy protection schemes use to distinguish copies from an original CD." -- https://en.wikipedia.org/wiki/CD-R https://en.wikipedia.org/wiki/CD-R And/or: "Some hardware compatible with Red Book CDs may have difficulty reading CD-Rs and, because of their lower reflectivity, especially CD-RWs."

deleted 2y ago
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