New Edge-Shift Detection Method for Write Strategy Optimization in High-Density Optical Disc Recording
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概要
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We propose a sophisticated edge-shift detection method based on the partial response maximum likelihood technology for high-density optical disc recordings. One of the major features is the capability of detecting the edge shifts of short marks that cannot be optically resolved. Another feature is that measured values are not affected by the signal-to-noise ratio in a readout signal. This ensures drive compatibility. Furthermore, the edge-shift values are sorted and evaluated corresponding to the write pulse control parameters for simplifying write strategy optimization. These features make write strategy optimization possible under an areal recording density of over 30 Gbyte/layer.
- 2011-09-25
著者
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Kikukawa Atsushi
Central Research Laboratory Hitachi Ltd.
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Kurokawa Takahiro
Central Research Laboratory. Hitachi Ltd.
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Watanabe Koichi
Central Research Laboratory Hitachi Ltd.
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Minemura Hiroyuki
Central Research Laboratory, Hitachi Ltd., 1-280 Higashi-koigakubo, Kokubunji-shi, Tokyo 185-6801, Japan
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Minemura Hiroyuki
Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan
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Kikukawa Atsushi
Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo 185-8601, Japan
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Kurokawa Takahiro
Central Research Laboratory, Hitachi, Ltd., 1-280 Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan
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