Chinese Optics Letters, Volume. 7, Issue 5, 05424(2009)
Analysis of differential phase detection signal of a novel multi-level read-only disc
To improve the tracking servo performance, a novel signal waveform multi-level (SWML) read-only disc realized on the digital versatile disc (DVD) platform is presented. The characteristic of the differential phase detection (DPD) signal of the SWML read-only disc is analyzed both in theory and experiment. The amplitude of the DPD signal of the SWML read-only disc in an open tracking servo loop is about 2/3 of that of the DVD read-only disc. The uniformity and symmetry of the DPD signal of the SWML read-only disc are similar to those of the DVD read-only disc and better than the former multi-level run-length limited (ML-RLL) read-only disc.
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Mingming Yan, Jing Pei, Longfa Pan, Yi Tang. Analysis of differential phase detection signal of a novel multi-level read-only disc[J]. Chinese Optics Letters, 2009, 7(5): 05424
Received: Aug. 4, 2008
Accepted: --
Published Online: May. 22, 2009
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