公开(公告)号：US6064536A

公开(公告)日：2000-05-16

申请号：US909355

申请日：1997-08-11

申请人： Kan Ebisawa ,  Hiroki Nagakita

发明人： Kan Ebisawa ,  Hiroki Nagakita

IPC分类号： G11B20/10 ,  G11B20/18 ,  G11B5/035 ,  G11B5/09

CPC分类号： G11B20/10481 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10046 ,  G11B20/10296 ,  G11B20/182

摘要： A reproduced signal of a test signal recorded together with data on a recording medium in each unit recording area thereof is equalized in waveform by an adaptive waveform equalizing means while tap coefficients thereof are being varied. The tap coefficients obtained when an equalized signal is as close to an ideally equalized dignal as possible are used as optimum tap coefficients, and the reproduced signals of the data in the unit recording areas are equalized in waveform using the optimum tap coefficients.The data can be equalized in waveform stably, reliably, and quickly by a small-scale circuit. There is provided an apparatus for reproducing data so as to be able to achieve high-density recording.

摘要翻译： 在其单位记录区域中与记录介质上的数据一起记录的测试信号的再现信号在自适应波形均衡装置的波形下被平衡，同时其抽头系数被改变。 将均衡信号尽可能接近理想均衡的信号获得的抽头系数用作最佳抽头系数，并且使用最佳抽头系数在单位记录区域中的数据的再现信号在波形上均衡。 数据可以通过小型电路稳定，可靠，快速地进行波形均衡。 提供了一种用于再现数据以便能够实现高密度记录的装置。

公开(公告)号：US08179756B2

公开(公告)日：2012-05-15

申请号：US12908423

申请日：2010-10-20

申请人： Hiroki Nagakita

发明人： Hiroki Nagakita

IPC分类号： G11B7/00

CPC分类号： G11B7/14

摘要： An optical disc drive apparatus includes: a plurality of optical heads reading out data recorded on an optical disc; and a control section respectively controlling a readout operation and a seek operation for the data of the optical heads. The control section includes a first mode in which when reading out a data group for reproduction of images or audio which are recorded on the optical disc, a readout amount of the data group is allocated to each optical heads and the readout operations of the optical heads are respectively controlled, and a second mode in which when reading out the data group for reproduction of the images or audio which are recorded on the optical disc, the readout operations of the optical heads are respectively controlled so that each optical head reads out the data group. The control section can dynamically switch the first and second modes.

摘要翻译： 光盘驱动装置包括：多个光头读出记录在光盘上的数据; 以及控制部分，分别控制光头的数据的读出操作和寻道操作。 控制部分包括第一模式，其中当读出用于再现记录在光盘上的图像或音频的数据组时，将数据组的读出量分配给每个光学头和光学头的读出操作 以及第二模式，其中当读出用于再现记录在光盘上的图像或音频的数据组时，分别控制光学头的读出操作，使得每个光学头读出数据 组。 控制部分可以动态地切换第一和第二模式。