Real-time high-resolution PC-based system for measurement of errors on compact disks
Babak Tehranchi, Dennis G. Howe · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1994
Hardware and software utilities are developed to directly monitor the Eight-to-Fourteen (EFM) demodulated data bytes at the input of a CD player's Cross-Interleaved Reed-Solomon Code (CIRC) block decoder. The hardware is capable of identifying erroneous data with single-byte resolution in the serial data stream read from a Compact Disc by a CDD 461 Philips CD-ROM drive. In addition, the system produces graphical maps that show the physical location of the measured errors on the entire disc, or via a zooming and planning feature, on user selectable local disc regions.