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Servo Systems Presenting High Playability

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Three methods improving trackability of CD players are described: 1. AM detection method, already used in commercial products, for players using 3 beam tracking error detection; 2. Verified DPD method, newly disclosed, for players using 1 beam tracking error detection; 3. Zero order holding method with pulse canceling technique, also newly disclosed, for any type player.

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AES - Audio Engineering Society