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    • 4. 发明申请
    • Servo System, Record Carrier and Playback Device
    • 伺服系统,记录载体和播放设备
    • US20080013428A1
    • 2008-01-17
    • US11568718
    • 2005-05-04
    • Josephus Kahlman
    • Josephus Kahlman
    • G11B7/00
    • G11B7/0941
    • To improve the performance of a servo system, used for tracking a track on a record carrier, the bandwidth of the servo system must be adjusted. Instead of injecting a signal into the servo system to allow adjustment of the bandwidth, the track position modulation of the record carrier is used. The track position modulation comprises two signals of which the signal with the lower frequency has a higher amplitude than the signal with the higher frequency. After the reduction by the servo system the second signal is used as a reference and optimal adjustment of the bandwidth can be achieved.
    • 为了提高用于跟踪记录载体上的轨道的伺服系统的性能,必须调整伺服系统的带宽。 代替将信号注入伺服系统以允许调整带宽,使用记录载体的轨道位置调制。 轨道位置调制包括具有较低频率的信号具有比具有较高频率的信号更高的振幅的两个信号。 在通过伺服系统的减少之后,第二信号用作参考,并且可以实现带宽的最佳调整。