What is PSP?
PSP is short for Pit Signal Processing – the most prominent copy protection measure of the SA-CD format. PSP is a physical watermarking feature that contains a digital watermark modulated in the width of pits on the disc (whereas data is stored in the length of the pits). The optical pickup must contain special circuitry to read the PSP watermark, which is then compared to information on the disc to make sure it’s legitimate. Because DVD-ROM drives use an optical pickup that lacks this specialized watermark detection circuitry they cannot read the data on the high-density layer of a protected SA-CD disc.
PSP is short for Pit Signal Processing – the most prominent copy protection measure of the SA-CD format. PSP is a physical watermarking feature that contains a digital watermark modulated in the width of pits on the disc (whereas data is stored in the length of the pits). The optical pickup must contain special circuitry to read the PSP watermark, which is then compared to information on the disc to make sure it’s legitimate. Because DVD-ROM drives use an optical pickup that lacks this specialized watermark detection circuitry they cannot read the data on the high-density layer of a protected SA-CD disc. Pit Signal Processing has nothing to do with PlayStation Portable, another PSP name coined by Sony.
