Abstract
We propose a novel bit-detection method which is applicable to high-density optical recording systems which use d=1 runlength-limited codes. The method detects and corrects sign-reversals caused by playback imperfections in the samples of the shortest recorded domains in the sampled playback signal. The new method is very simple computationally, and offers the potential of implementation at very high speeds, since it does not involve bit-recursive operations. Theoretical analysis, simulation results, and application to experimentally derived playback signals demonstrate the performance of the proposed method, which attains acceptable levels over a wide range of recording densities.
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