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15 条记录 (耗时 0.016 秒)

    DVD−R/RW and DVD+R/RW recorders
    1.
    发明授权
    DVD−R/RW and DVD+R/RW recorders 有权
    DVD-R / RW和DVD + R / RW刻录机

    公开(公告)号：US07804756B2

    公开(公告)日：2010-09-28

    申请号：US11163237

    申请日：2005-10-11

    申请人： Bassel Haddad ,  Jacob Finkelstein

    发明人： Bassel Haddad ,  Jacob Finkelstein

    IPC分类号： G11B7/00

    CPC分类号： G11B20/10222 ,  G11B7/0053 ,  G11B7/24082 ,  G11B20/10212 ,  G11B20/10425 ,  G11B2020/1461 ,  G11B2220/216 ,  G11B2220/2562

    摘要： A method and apparatus for recording data at specific locations on a DVD includes selectively detecting the occurrence of wobble sync during a window computed from previous occurrences of wobble sync and eight-to-fourteen modulation sync. The method and apparatus also uses a phase-locked loop to recover the wobble signal, including wobble sync, and computes phase drift between wobble sync and eight-to-fourteen modulation sync and applies a compensation profile, compatible with a read clock phase-locked loop, to the wobble phase-locked loop.

    摘要翻译： 用于在DVD上的特定位置记录数据的方法和装置包括在从先前出现的摆动同步和八到十四调制同步计算的窗口期间选择性地检测摆动同步的发生。 该方法和装置还使用锁相环来恢复摆动信号，包括摆动同步，并且计算摆动同步和八到十四调制同步之间的相位漂移，并且应用与读时钟锁相兼容的补偿曲线 循环到摆动锁相环。

    Method and apparatus for high resolution measurement of signal timing
    2.
    发明授权
    Method and apparatus for high resolution measurement of signal timing 失效
    用于信号定时高分辨率测量的方法和装置

    公开(公告)号：US07697650B2

    公开(公告)日：2010-04-13

    申请号：US11277400

    申请日：2006-03-24

    申请人： Bassel Haddad ,  Jacob Finkelstein

    发明人： Bassel Haddad ,  Jacob Finkelstein

    IPC分类号： H04L7/00

    CPC分类号： H03L7/091 ,  H03D13/003

    摘要： A phase measurement system for measuring phase between an input signal having a frequency and a reference signal having a substantially different frequency includes: a phase comparator having an output representing a time between a crossing of a first threshold by a clock derived from the reference signal and a predetermined time along an interval from a first sample to a second sample, where the input signal crosses a second threshold on the interval; an interpolator having an output indicative of an interpolated time of the second-threshold-crossing on the interval in the input signal; and a phase calculator which computes the phase difference by combining the phase comparator output and the interpolator output.

    摘要翻译： 用于测量具有频率的输入信号和具有基本不同频率的参考信号之间的相位的相位测量系统包括：相位比较器，具有表示第一阈值与从参考信号导出的时钟的交叉之间的时间的输出和 沿着从第一样本到第二样本的间隔的预定时间，其中所述输入信号跨越所述间隔的第二阈值; 内插器，其具有指示所述输入信号中的间隔上的所述第二阈值交叉的内插时间的输出; 以及相位计算器，通过组合相位比较器输出和内插器输出来计算相位差。

    System and method for efficient use of memory device bandwidth
    3.
    发明申请
    System and method for efficient use of memory device bandwidth 有权
    有效利用存储器件带宽的系统和方法

    公开(公告)号：US20060156190A1

    公开(公告)日：2006-07-13

    申请号：US11026319

    申请日：2004-12-29

    申请人： Jacob Finkelstein ,  Rakefet Kol ,  Asa Levinger

    发明人： Jacob Finkelstein ,  Rakefet Kol ,  Asa Levinger

    IPC分类号： G11C29/00

    CPC分类号： H03M13/2909 ,  H03M13/1515

    摘要： In a device that utilizes a memory device, the access bandwidth of the memory device is efficiently utilized by determining a set of operations to be performed on information stored in the memory device, and sorting the operations into an order so as to minimize the number of accesses to the memory device to perform the operations. The sorted operations are then performed in that order. An example of such a device is an error correction decoder, such as for use with an optical disk reader or player. The error correction decoder generates error correction data, representing error correction operations, and sorts the error correction data into multiple sets, each set for correcting the errors in a respective row of an ECC block stored in an external buffer. The error correction operations are then performed row by row.

    摘要翻译： 在利用存储器件的设备中，通过确定对存储在存储器件中的信息执行的一组操作来有效地利用存储器件的访问带宽，并且将操作排序成最小化数量 访问存储器件以执行操作。 然后以该顺序执行排序的操作。 这种装置的一个例子是诸如用于光盘读取器或播放器的纠错解码器。 纠错解码器产生纠错数据，表示纠错操作，并将纠错数据分类成多组，每组设置用于校正存储在外部缓冲器中的ECC块的相应行中的错误。 然后逐行执行纠错操作。

    Methods and apparatus for detecting and correcting magnification error in a multi-beam optical disk drive
    8.
    发明授权
    Methods and apparatus for detecting and correcting magnification error in a multi-beam optical disk drive 失效
    用于检测和校正多光束光盘驱动器中放大误差的方法和装置

    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。

    Focussing system and methods for multi- track optical disk apparatus
    10.
    发明授权
    Focussing system and methods for multi- track optical disk apparatus 失效
    多轨光盘设备的聚焦系统和方法

    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。