Signal processing apparatus capable of suppressing non-linear noise component during reading optical recording medium

摘要

According to an embodiment, a signal processing apparatus includes a first signal processor, a second signal processor and a third signal processor. The first signal processor suppresses an offset component remaining in a reproduction signal read from an optical recording medium to obtain a first signal. The second signal processor suppresses a nonlinear distortion component remaining in the first signal to obtain a second signal. The third signal processor suppresses a correlation noise component remaining in the second signal to obtain a third signal.

主权项

1. A signal processing apparatus comprising:
a first signal processor which suppresses an offset component remaining in a reproduction signal read from an optical recording medium to obtain a first signal; a second signal processor which suppresses a nonlinear distortion component remaining in the first signal to obtain a second signal; and a third signal processor which suppresses a correlation noise component remaining in the second signal to obtain a third signal, wherein the second signal processor comprises a Volterra filter, the third signal processor comprises an ARML filter, the first signal processor, the second signal processor, and the third signal processor are adaptive filters, a control bandwidth of the first signal processor is higher than that of the second signal processor, and the control bandwidth of the second signal processor is higher than that of the third signal processor.