Abstract
A new data-reproducing scheme is presented and implemented by field programmable gate array (FPGA) for higher density data reproduction on a commercial Blu-ray Disc. By introducing a signal waveform phase detector, the phase locked loop (PLL) circuit shows good performance against the inter-symbol interference (ISI) effect. From the experiment results, the new scheme can be used to reproduce data with a linear density of 40 GB using a commercial single-layer Blu-ray Disc.