Transition detector for CD and DVD
Jan W. M. Bergmans, W. Coene, Rob Otte, S. Bramwell · IEEE Transactions on Consumer Electronics · 2000
This bit detector for d=2 modulation codes is remarkably simple, supports very high data rates, can be adaptive, and is capable of handling nonlinearities. The performance approaches that of a full-fledged maximum-likelihood sequence detector.