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TRACK JUMP CONTROL METHOD, CONCERNED WITH OBTAINING A CERTAIN SIZE OF A TRACKING ERROR SIGNAL REGARDLESS OF A RECORDED/UNRECORDED AREA
TRACK JUMP CONTROL METHOD, CONCERNED WITH OBTAINING A CERTAIN SIZE OF A TRACKING ERROR SIGNAL REGARDLESS OF A RECORDED/UNRECORDED AREA
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机译：考虑到记录/未记录区域的跟踪误差信号的确定大小的轨迹跳跃控制方法
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摘要
PURPOSE: A track jump control method is provided to measure size of a tracking error signal, and to compensate for the size of the tracking error signal as size of a tracking error signal detected when a track jump is started if a difference between the two tracking error signals is more than a threshold value, thereby obtaining a certain size of the tracking error signal regardless of a recorded/unrecorded area. CONSTITUTION: When a track jump command is inputted(401), a system starts a track jump(402), and detects size of a tracking error signal while starting the track jump(403). The system periodically detects the size of the tracking error signal, and compares the sizes of the currently detected tracking error signal and a tracking error signal produced just before the detection(404). If a difference value of the two tracking error signals is more than a threshold value(405), a servo controller compensates for the size of the signal to output the signal toward a tracking servo driver(406). If the track jump is completed(407), the tracking servo driver turns on a tracking process with the compensated tracking error signal(408).
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