| 摘要 |
<p>The present invention relates to a method and an apparatus to transform a signal received from a channel into a binary code sequence, and more particularly to a signal processing apparatus, which can perform the maximum likelihood detec-tion of the reproduced data from an optical disk.A new algorithm is used, which has shown to be both, more precise than the known solution and independent of signal amplitudes.This procedure has the advantage that no selective amplifi-cation is necessary for Maximum Likelihood Detection.The general idea of the invention is described as follows:- known algorithms only work properly if (value >1), but not if the (value <1)- according to the invention: in case that (value <1), in-vert conditions are required- this will lead to correct results for value ><1 and sometimes to a wrong 'first' result, which has no criti-cal influence.</p> |
