公开(公告)号：US5701283A

公开(公告)日：1997-12-23

申请号：US559419

申请日：1995-11-15

申请人： Amir Alon ,  Arie Heiman ,  Itzhak Katz

发明人： Amir Alon ,  Arie Heiman ,  Itzhak Katz

IPC分类号： G11B7/09 ,  G11B7/14 ,  G11B20/10 ,  G11B20/22 ,  G11B21/00 ,  G11B7/00

CPC分类号： G11B20/22 ,  G11B7/0901 ,  G11B7/14 ,  G11B20/10009 ,  G11B21/006

摘要： Methods and apparatus are provided for simultaneously reading data from multiple tracks of an optical disk at a high rate. Circuitry is provided for use with a detector matrix to read and buffer data in parallel from the multiple adjacent tracks, while asynchronously providing processed data to a host processor. Circuitry is also provided for electronic tracking of tracks on the optical disk and for reducing cross-talk between adjacent tracks. Circuitry is further provided for correcting phase errors resulting from variations in the linear velocity of the tracks being read, depending upon the radial position of the tracks.

摘要翻译： 提供了用于以高速率从光盘的多个轨道同时读取数据的方法和装置。 电路被提供用于与检测器矩阵一起用于从多个相邻轨道并行读取和缓冲数据，同时将处理的数据异步地提供给主机处理器。 还提供电路用于电子跟踪光盘上的轨道并减少相邻轨道之间的串扰。 进一步提供电路，用于根据磁道的径向位置来校正由正在读取的磁道的线速度的变化引起的相位误差。

公开(公告)号：US5652746A

公开(公告)日：1997-07-29

申请号：US558805

申请日：1995-11-15

申请人： Arie Heiman

发明人： Arie Heiman

IPC分类号： G11B7/005 ,  G11B7/09 ,  G11B7/14 ,  G11B21/00 ,  G11B7/00

CPC分类号： G11B21/006 ,  G11B7/0901 ,  G11B7/14 ,  G11B7/005

摘要： Methods and apparatus are provided for simultaneously tracking multiple data tracks of an optical disk using a detector matrix formed of a plurality of pixels. Based on track pitch, pixel pitch and predetermined point spread functions of the pixels, a series of simultaneous equations based on sampled pixel data is generated and solved to determine an offset distance between a selected pixel and a selected track and corrected values of the sampled pixel data. Alternatively, the series of equations may be generated, based on sample pixel readout values and a series of weighting coefficients, such that solution of the equations enables the position of a selected track may be determined.

摘要翻译： 提供了使用由多个像素形成的检测器矩阵来同时跟踪光盘的多个数据轨道的方法和装置。 基于轨道间距，像素间距和像素的预定点扩散函数，生成并解决基于采样像素数据的一系列联立方程，以确定所选择的像素与所选轨道之间的偏移距离以及采样像素的校正值 数据。 或者，可以基于样本像素读出值和一系列加权系数来生成一系列等式，使得等式的解使得能够确定所选轨道的位置。

公开(公告)号：US6137763A

公开(公告)日：2000-10-24

申请号：US159998

申请日：1998-09-24

申请人： Shalom Dahan ,  Koby Finklestein ,  Aharon Nagad

发明人： Shalom Dahan ,  Koby Finklestein ,  Aharon Nagad

IPC分类号： G06F3/06 ,  G11B7/14 ,  G11B20/10 ,  G11B20/12 ,  G11B3/74

CPC分类号： G06F3/0613 ,  G06F3/0656 ,  G06F3/0677 ,  G11B20/10 ,  G11B20/12 ,  G11B7/14

摘要： Methods and apparatus are disclosed for buffering and reordering data blocks read simultaneously from multiple tracks of an optical disk, so that they may be delivered in sequential order to a host computer. The methods involve the use of numerous processes to receive read commands, position an optical pickup, handle memory management tasks, process data blocks as they arrive, and send data blocks to the host computer in sequential order as they become available. The reordering of data blocks is achieved by checking each data block as it arrives in a "read process" to see if it may be linked in a sequential chain with a data block that arrived from the next track. Additionally, methods for determining if a requested data block is in the range of blocks that are currently being read, and methods for determining when the optical pickup may be moved to read the next set of tracks are described.

摘要翻译： 公开了用于缓冲​​和重新排序从光盘的多个轨道同时读取的数据块的方法和装置，使得它们可以按顺序被递送到主计算机。 这些方法涉及使用许多过程来接收读取命令，定位光学拾取器，处理存储器管理任务，处理数据块到达时，并且当它们变得可用时以顺序的顺序向主计算机发送数据块。 数据块的重新排序是通过在“数据块”到达“读取过程”时检查每个数据块，以查看它是否可以在顺序链中与从下一个轨道到达的数据块链接。 此外，描述了用于确定所请求的数据块是否在当前被读取的块的范围内的方法，以及用于确定何时可以移动光学拾取器以读取下一组轨道的方法。

公开(公告)号：US5825743A

公开(公告)日：1998-10-20

申请号：US676554

申请日：1996-07-08

申请人： Amir Alon ,  Shlomo Shapira

发明人： Amir Alon ,  Shlomo Shapira

IPC分类号： G11B7/125 ,  G11B7/135 ,  G11B7/14 ,  G11B7/00

CPC分类号： G11B7/14 ,  G11B7/126 ,  G11B7/127 ,  G11B7/128 ,  G11B7/1384 ,  G11B7/1398

摘要： Methods and apparatus are provided for illuminating an optical disk in a multi-track optical disk reader. A laser beam is collimated and focused onto an area including multiple, adjacent data tracks on the optical disk. To minimize noise caused by interference resulting from the reflection of multiple beams from the optical disk the coherency of the laser beam is reduced. This is accomplished by one or more of the following techniques: passing the laser beam through a multi-mode optical fiber, combining laser beams from multiple independent laser sources, and modulating the laser operating current at high frequency.

摘要翻译： 提供用于在多轨光盘读取器中照亮光盘的方法和装置。 激光束被准直并聚焦到包括光盘上的多个相邻数据轨道的区域上。 为了最小化由于来自光盘的多个光束的反射而引起的干扰引起的噪声，激光束的相干性降低。 这通过以下一种或多种技术实现：将激光束通过多模光纤，组合来自多个独立激光源的激光束，并以高频率调制激光器工作电流。

公开(公告)号：US5729512A

公开(公告)日：1998-03-17

申请号：US675526

申请日：1996-07-03

申请人： Amir Alon

发明人： Amir Alon

IPC分类号： G11B7/005 ,  G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B7/095

CPC分类号： G11B7/14 ,  G11B7/0943 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1395 ,  G11B7/005

摘要： Methods and apparatus are provided for generating focus, tracking, and magnification error signals in an multi-track optical disk reader. An optical pickup assembly for the disk reader includes an optical sensor having multiple sensor elements. Some of the sensor elements contain multiple divisions whose outputs are summed to produce tracking, focus, and magnification error signals. Electronic and optical mechanical systems are provided for correcting or compensating for magnification errors caused by an optical pickup assembly of a multi-track optical disk reader.

摘要翻译： 提供了用于在多轨光盘读取器中产生聚焦，跟踪和放大误差信号的方法和装置。 用于盘读取器的光学拾取器组件包括具有多个传感器元件的光学传感器。 一些传感器元件包含多个分割，其输出相加以产生跟踪，聚焦和放大误差信号。 提供电子和光学机械系统用于校正或补偿由多轨光盘读取器的光学拾取组件引起的放大误差。

公开(公告)号：US5627805A

公开(公告)日：1997-05-06

申请号：US559429

申请日：1995-11-15

申请人： Jacob Finkelstein ,  Amir Alon

发明人： Jacob Finkelstein ,  Amir Alon

IPC分类号： G11B7/005 ,  G11B7/13 ,  G11B7/14 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B20/22 ,  G11B27/30 ,  G11B17/22

CPC分类号： G11B7/131 ,  G11B20/10009 ,  G11B20/10259 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/1833 ,  G11B27/3063 ,  G11B7/14 ,  G11B20/22 ,  G11B2220/213 ,  G11B2220/2545 ,  G11B2220/2562 ,  G11B7/005

摘要： Methods and apparatus are provided for simultaneously reading data from multiple tracks of an optical disk at a high rate. Circuitry is provided for use with a detector matrix to read and buffer data in parallel from the multiple adjacent tracks, while asynchronously providing processed data to a host processor. Circuitry is also provided for electronic tracking of tracks on the optical disk and for reducing cross-talk between adjacent tracks. Circuitry is further provided for correcting phase errors resulting from variations in the linear velocity of the tracks being read, depending upon the radial position of the tracks.

摘要翻译： 提供了用于以高速率从光盘的多个轨道同时读取数据的方法和装置。 电路被提供用于与检测器矩阵一起用于从多个相邻轨道并行读取和缓冲数据，同时将处理的数据异步地提供给主机处理器。 还提供电路用于电子跟踪光盘上的轨道并减少相邻轨道之间的串扰。 进一步提供电路，用于根据磁道的径向位置来校正由正在读取的磁道的线速度的变化引起的相位误差。

公开(公告)号：US5574712A

公开(公告)日：1996-11-12

申请号：US394175

申请日：1995-02-24

申请人： Amir Alon ,  Shlomo Shapira ,  Itzhak Katz

发明人： Amir Alon ,  Shlomo Shapira ,  Itzhak Katz

IPC分类号： G11B7/09 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  G11B7/14 ,  G11B11/18

CPC分类号： G11B7/131 ,  G11B7/0901 ,  G11B7/12 ,  G11B7/127 ,  G11B7/128 ,  G11B7/1362 ,  G11B7/1384 ,  G11B7/14

摘要： A method of reading data from an optical disk comprises providing means for illuminating the required part of the disk and acquiring the optical image of a plurality of tracks, providing a detector matrix comprising a plurality of detectors, each of the detectors being capable of producing an output signal which is proportional to the intensity of the light detected by it causing an optical image corresponding to an illuminated area to fall on the said detector matrix, transferring the output signal of the detector matrix to image processing means, determining position coordinates of the track center for each data track, by analyzing the output signal of the said detector matrix, saving in memory means expected track center data, comprising position coordinates of the track center located by the analysis of the output signal, and if an actually detected track center is shifted with respect to the expected track center, electronically moving the track center position.

摘要翻译： 从光盘读取数据的方法包括：提供用于照亮盘的所需部分并获取多个轨道的光学图像的装置，提供包括多个检测器的检测器矩阵，每个检测器能够产生 输出信号，其与由其检测到的光的强度成比例，使得与照明区域相对应的光学图像落在所述检测器矩阵上，将检测器矩阵的输出信号传送到图像处理装置，确定轨道的位置坐标 通过分析所述检测器矩阵的输出信号，通过分析所述检测器矩阵的输出信号来节省存储装置预期轨道中心数据，包括通过对输出信号的分析定位的轨道中心的位置坐标，以及如果实际检测到的轨道中心是 相对于预期轨道中心移动，电子地移动轨道中心位置。