公开(公告)号：US5793715A

公开(公告)日：1998-08-11

申请号：US558835

申请日：1995-11-15

申请人： Amir Alon ,  Shlomo Shapira ,  Michael Naor ,  Jacob Finkelstein ,  Itzhak Katz

发明人： Amir Alon ,  Shlomo Shapira ,  Michael Naor ,  Jacob Finkelstein ,  Itzhak Katz

IPC分类号： G11B7/085 ,  G11B7/13 ,  G11B7/14 ,  G11B17/22 ,  G11B7/00

CPC分类号： G11B7/131 ,  G11B7/08541 ,  G11B7/14

摘要： Methods and apparatus are provided for improving optical drive access times using a detector having multiple sensing elements to sense and count disk tracks. The detector may be oriented either radially or tangentially with respect to the disk radius, and either capable of sensing more than one disk location simultaneously or have a length greater than the maximum distance between detectable features of the disk.

摘要翻译： 提供了使用具有多个感测元件的检测器来感测和计数磁盘轨迹来提高光驱访问时间的方法和装置。 检测器可以相对于盘半径径向地或切向地定向，并且能够同时感测多于一个盘位置或者具有大于盘的可检测特征之间的最大距离的长度。

公开(公告)号：US5774432A

公开(公告)日：1998-06-30

申请号：US842936

申请日：1997-04-25

申请人： Amir Alon ,  Jacob Finkelstein ,  Itzhak Katz ,  Michael Naor ,  Shlomo Shapira

发明人： Amir Alon ,  Jacob Finkelstein ,  Itzhak Katz ,  Michael Naor ,  Shlomo Shapira

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

CPC分类号： G11B7/131 ,  G11B7/0909 ,  G11B7/0912 ,  G11B7/094 ,  G11B7/1372 ,  G11B7/14

摘要： Focussing system methods and apparatus are provided for apparatus capable of simultaneously reading multiple tracks of an optical disk. Astigmatism introduced by a cylindrical lens disposed adjacent to the light source, or before the focus detectors arranged at the edge of a wide-area field of illumination, is used to compute an error signal corresponding to the degree of out-of-focus, which error signal is provided to a servo-system that moves the objective lens to correct the focus. An alternative embodiment employs a pair of focus detectors and a pair of micro-lenses having different focal lengths that directs the reflected light onto the focus detectors to generate a focus correction signal. Further alternative embodiments of employing the astigmatism method of focussing are described.

摘要翻译： 提供了能够同时读取光盘的多个轨道的装置的聚焦系统方法和装置。 由与邻近光源设置的柱面透镜或者布置在大面积照明区域的边缘处的焦点检测器之前的散光引入的散光用于计算对应于失焦程度的误差信号，其中 误差信号被提供给移动物镜以校正焦点的伺服系统。 替代实施例采用一对焦点检测器和具有不同焦距的一对微透镜，其将反射光引导到焦点检测器上以产生聚焦校正信号。 描述采用聚焦散光方法的其它替代实施例。

公开(公告)号：US5708634A

公开(公告)日：1998-01-13

申请号：US531764

申请日：1995-09-20

申请人： Amir Alon ,  Jacob Finkelstein ,  Itzhak Katz ,  Michael Naor ,  Shlomo Shapira

发明人： Amir Alon ,  Jacob Finkelstein ,  Itzhak Katz ,  Michael Naor ,  Shlomo Shapira

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

CPC分类号： G11B7/131 ,  G11B7/0909 ,  G11B7/0912 ,  G11B7/094 ,  G11B7/1372 ,  G11B7/14

摘要： Focussing system methods and apparatus are provided for apparatus capable of simultaneously reading multiple tracks of an optical disk. Astigmatism introduced by a cylindrical lens disposed adjacent to the light source, or before the focus detectors arranged at the edge of a wide-area field of illumination, is used to compute an error signal corresponding to the degree of out-of-focus, which error signal is provided to a servo-system that moves the objective lens to correct the focus. An alternative embodiment employs a pair of focus detectors and a pair of micro-lenses having different focal lengths that directs the reflected light onto the focus detectors to generate a focus correction signal. Further alternative embodiments of employing the astigmatism method of focussing are described.

摘要翻译： 提供了能够同时读取光盘的多个轨道的装置的聚焦系统方法和装置。 由与邻近光源设置的柱面透镜或者布置在大面积照明区域的边缘处的焦点检测器之前的散光引入的散光用于计算对应于失焦程度的误差信号，其中 误差信号被提供给移动物镜以校正焦点的伺服系统。 替代实施例采用一对焦点检测器和具有不同焦距的一对微透镜，其将反射光引导到焦点检测器上以产生聚焦校正信号。 描述采用聚焦散光方法的其它替代实施例。

公开(公告)号：US06381210B1

公开(公告)日：2002-04-30

申请号：US09013864

申请日：1998-01-27

申请人： Amir Alon ,  Jacob Finkelstein ,  Michael Naor

发明人： Amir Alon ,  Jacob Finkelstein ,  Michael Naor

IPC分类号： G11B700

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

摘要： Methods and apparatus are provided for synchronously reading data from multiple tracks of an optical disk using multiple illumination beams. Circuitry is provided for use with a photodetector array to read and buffer data in parallel from the multiple adjacent tracks, while asynchronously providing processed data to a host processor. Circuitry is further provided for concurrently processing the signals read from the multiple data tracks to recover the data stored in the tracks.

摘要翻译： 提供了用于使用多个照明光束同步从光盘的多个轨道读取数据的方法和装置。 提供电路用于与光电检测器阵列一起从多个相邻轨道并行读取和缓冲数据，同时将处理后的数据提供给主机处理器。 进一步提供电路，用于同时处理从多个数据轨道读取的信号，以恢复存储在轨道中的数据。

公开(公告)号：US6028827A

公开(公告)日：2000-02-22

申请号：US13861

申请日：1998-01-27

申请人： Amir Alon ,  Jacob Finkelstein

发明人： Amir Alon ,  Jacob Finkelstein

IPC分类号： G11B7/005 ,  G11B7/13 ,  G11B7/14 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B20/22 ,  G11B27/30 ,  G11B5/09 ,  G11B3/74 ,  G11B7/00

CPC分类号： G11B20/10009 ,  G11B20/10259 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/1833 ,  G11B27/3063 ,  G11B7/131 ,  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 generating a reference data clock independently of spindle motor speed and the spindle motor speed servo circuitry. Circuitry is also provided for deriving individual track data clocks from the reference data clock, while correcting for phase and frequency 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。 提供电路用于独立于主轴电机速度和主轴电机速度伺服电路产生参考数据时钟。 还提供电路，用于从参考数据时钟导出单独的轨道数据时钟，同时根据轨道的径向位置来校正由正在读取的轨道的线速度的变化导致的相位和频率误差。

公开(公告)号：US5907526A

公开(公告)日：1999-05-25

申请号：US804105

申请日：1997-02-20

申请人： Amir Alon ,  Jacob Finkelstein

发明人： Amir Alon ,  Jacob Finkelstein

IPC分类号： G11B7/005 ,  G11B7/13 ,  G11B7/14 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B20/22 ,  G11B27/30 ,  G11B17/22 ,  G11B5/76

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

摘要： Methods and apparatus are provided for synchronously reading data from multiple tracks of an optical disk using multiple illumination beams. Circuitry is provided for use with a photodetector array to read and buffer data in parallel from the multiple adjacent tracks, while asynchronously providing processed data to a host processor. 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.

公开(公告)号：US5793549A

公开(公告)日：1998-08-11

申请号：US801397

申请日：1997-02-20

申请人： Amir Alon ,  Jacob Finkelstein

发明人： Amir Alon ,  Jacob Finkelstein

IPC分类号： G11B7/005 ,  G11B7/13 ,  G11B7/14 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B20/22 ,  G11B27/30 ,  G11B5/09

CPC分类号： G11B20/10009 ,  G11B20/10259 ,  G11B20/1403 ,  G11B20/1426 ,  G11B20/1833 ,  G11B27/3063 ,  G11B7/131 ,  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 generating a reference data clock independently of spindle motor speed and the spindle motor speed servo circuitry. Circuitry is also provided for deriving individual track data clocks from the reference data clock, while correcting for phase and frequency errors resulting from variations in the linear velocity of the tracks being read, depending upon the radial position of the tracks.

公开(公告)号：US06430125B1

公开(公告)日：2002-08-06

申请号：US09037471

申请日：1998-03-10

申请人： Amir Alon ,  Jacob Finkelstein

发明人： Amir Alon ,  Jacob Finkelstein

IPC分类号： G11B7095

CPC分类号： G11B7/1398 ,  G11B7/005 ,  G11B7/0903 ,  G11B7/0943 ,  G11B7/0945 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1378 ,  G11B7/1395 ,  G11B7/14 ,  G11B2007/13727

摘要： Methods and apparatus are provided for detecting and correcting magnification errors while simultaneously reading or writing multiple data tracks with a multi-beam optical disk drive. An optical head for the optical disk drive includes a plurality of laser diodes that generate multiple light beams for reading from or writing to the optical disk, means for detecting a magnification error, and means for compensating for the magnification error to align the multiple light beams with multiple data tracks. A number of opto-mechanical systems are provided for correcting the magnification errors in the beams.

摘要翻译： 提供了用于检测和校正倍率误差的方法和装置，同时用多光束光盘驱动器同时读取或写入多个数据轨道。 用于光盘驱动器的光学头包括产生用于从光盘读取或向光盘写入的多个光束的多个激光二极管，用于检测放大误差的装置，以及用于补偿放大误差以使多个光束 具有多个数据轨道。 提供了许多光学机械系统来校正光束中的放大误差。

公开(公告)号：US6111831A

公开(公告)日：2000-08-29

申请号：US203294

申请日：1998-12-01

申请人： Amir Alon ,  Jacob Finkelstein

发明人： Amir Alon ,  Jacob Finkelstein

IPC分类号： G11B7/005 ,  G11B7/13 ,  G11B7/14 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18 ,  G11B20/22 ,  G11B27/30 ,  G11B5/09 ,  G11B3/74 ,  G11B7/00

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

摘要： Methods and apparatus are provided for synchronously reading data from multiple tracks of an optical disk using multiple illumination beams. Circuitry is provided for use with a photodetector array to read and buffer data in parallel from the multiple adjacent tracks, while asynchronously providing processed data to a host processor. 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： 提供了用于使用多个照明光束同步从光盘的多个轨道读取数据的方法和装置。 提供电路用于与光电检测器阵列一起从多个相邻轨道并行读取和缓冲数据，同时将处理后的数据提供给主机处理器。 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：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。