利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.012 秒)

    Optical data format employing resynchronizable data sectors
    2.
    发明授权
    Optical data format employing resynchronizable data sectors 失效
    采用可再同步数据扇区的光数据格式

    公开(公告)号：US4791622A

    公开(公告)日：1988-12-13

    申请号：US75273

    申请日：1987-07-20

    申请人： Donald W. Clay ,  Michael J. O'Keeffe ,  S. Robert Perera ,  Howard H. Rather ,  John P. Rundell

    发明人： Donald W. Clay ,  Michael J. O'Keeffe ,  S. Robert Perera ,  Howard H. Rather ,  John P. Rundell

    IPC分类号： G11B7/0045 ,  G11B7/013 ,  G11B17/04 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/28 ,  G11B27/32

    CPC分类号： G11B17/049 ,  G11B20/1252 ,  G11B20/1426 ,  G11B20/1809 ,  G11B20/1883 ,  G11B27/28 ,  G11B27/32 ,  G11B7/0045 ,  G11B7/013 ,  G11B2220/20 ,  G11B2220/218

    摘要： An optical disk drive system with which data may be permanently and correctly stored on removable media. The system includes a drive into which the media, a disk housed in a cartridge, may be removably inserted. The drive interfaces with a host CPU through a storage control unit, which storage control unit may also have other peripheral devices, such as magnetic disk drives, coupled therethrough to the host CPU. A special data format is used for data stored on the disk in order to provide efficient use of and access to the available storage space. The disk is divided into data bands, each data band having a prescribed number of concentric data tracks therein. Each data track is divided into equal length sectors. The data is organized into data blocks, each block being made up of a selected sequence of prescribed data sections. Many of the data sections commence with synchronization bits followed by the data to be stored. The data of each data section is adapted to fit within each data sector on the disk. When data is written in any given sector, it is immediately checked for correctness by reading the data that has been written and comparing it with the data that was to have been written. Defectively written data is flagged so that it can be skipped over and ignored during subsequent reads. Data in a given sector is rewritten until it is written correctly.

    摘要翻译： 数据可以永久正确地存储在可移动介质上的光盘驱动器系统。 该系统包括驱动器，介质，容纳在盒中的盘可以可移除地插入该驱动器中。 驱动器通过存储控制单元与主机CPU接口，该存储控制单元还可以具有耦合到主机CPU的其它外围设备，例如磁盘驱动器。 特殊的数据格式用于存储在磁盘上的数据，以便有效利用和访问可用的存储空间。 磁盘被分成数据带，每个数据带在其中具有规定数量的同心数据磁道。 每个数据轨道被划分成相等长度的扇区。 数据被组织成数据块，每个块由选定的规定数据段序列组成。 许多数据部分以同步位开始，随后是要存储的数据。 每个数据部分的数据适合于装在磁盘上的每个数据扇区内。 当数据写入任何给定的扇区时，通过读取已写入的数据并将其与要写入的数据进行比较，立即检查其是否正确。 标记有缺陷写入的数据，以便在后续读取期间可以跳过并忽略。 给定扇区中的数据被重写，直到写入正确。

    Method for recovering data in a tape drive system
    3.
    发明授权
    Method for recovering data in a tape drive system 有权
    在磁带机系统中恢复数据的方法

    公开(公告)号：US07810008B2

    公开(公告)日：2010-10-05

    申请号：US11440682

    申请日：2006-05-24

    申请人： Richard Allen Gill ,  Howard H. Rather

    发明人： Richard Allen Gill ,  Howard H. Rather

    IPC分类号： G06F11/30

    CPC分类号： G11B20/18 ,  G11B2020/183 ,  G11B2020/1836 ,  G11B2220/90 ,  G11C2029/0411

    摘要： A method is disclosed. The method includes performing a first read operation at a tape drive, determining if a minimum number of data bytes have been recovered in the first read operation to perform error correcting codes (ECC), performing a second read operation if the minimum number of data bytes to perform ECC have not been recovered, determining if a minimum number of data bytes have been recovered in the second read operation to perform ECC, combining the recovered data bytes from the first read operation and the second read operation to form combined recovered data bytes, determining if a minimum number of data bytes are included in the combined recovered data bytes to perform ECC and performing ECC if the minimum number of data bytes are included in the combined recovered data bytes.

    摘要翻译： 公开了一种方法。 该方法包括在磁带驱动器处执行第一读取操作，确定在第一读取操作中是否已经恢复了最小数量的数据字节以执行纠错码（ECC），如果最小数量的数据字节数 执行ECC尚未恢复，确定在第二读取操作中是否已经恢复了最小数量的数据字节以执行ECC，将来自第一读取操作和第二读取操作的恢复数据字节组合以形成组合的恢复数据字节， 确定组合的恢复数据字节中是否包括最小数量的数据字节以执行ECC，并且如果最小数量的数据字节包括在组合的恢复数据字节中，则执行ECC。

    System, method and data storage device for encrypting data
    4.
    发明授权
    System, method and data storage device for encrypting data 有权
    用于加密数据的系统，方法和数据存储设备

    公开(公告)号：US07706538B1

    公开(公告)日：2010-04-27

    申请号：US11404692

    申请日：2006-04-14

    申请人： James P. Hughes ,  Alexander Stewart ,  Dwayne A. Edling ,  Gregory S. Toles ,  Bradley E. Whitney ,  Benjamin J. Baron ,  Howard H. Rather ,  Michael E. Foy

    发明人： James P. Hughes ,  Alexander Stewart ,  Dwayne A. Edling ,  Gregory S. Toles ,  Bradley E. Whitney ,  Benjamin J. Baron ,  Howard H. Rather ,  Michael E. Foy

    IPC分类号： H04K1/00

    CPC分类号： H04L9/00 ,  H04L2209/30

    摘要： A system, method and data storage device for encrypting data to provide at-rest data encryption of data in the data storage device. The system includes a compression engine for receiving a host data stream packet and selectively generating a compressed data packet, and an encryption engine in electronic communication with the compression engine for receiving an unencrypted data packet from the compression engine. The unencrypted data packet comprises the compressed data packet when the compression engine generates the compressed data packet. The unencrypted data packet comprises the host data packet when the compression engine does not generate the compressed data packet. The encryption engine generates an encrypted data packet having an encrypted component corresponding to the unencrypted data packet and a set of meta data indicative of one or more characteristic of the encrypted data packet.

    摘要翻译： 一种用于加密数据以提供数据存储装置中的数据的静止数据加密的系统，方法和数据存储装置。 该系统包括用于接收主机数据流分组并选择性地生成压缩数据分组的压缩引擎，以及与压缩引擎电子通信的加密引擎，用于从压缩引擎接收未加密的数据分组。 当压缩引擎生成压缩数据分组时，未加密的数据分组包括压缩数据分组。 当压缩引擎不产生压缩数据分组时，未加密的数据分组包括主机数据分组。 加密引擎生成具有对应于未加密数据分组的加密分量和表示加密数据分组的一个或多个特性的一组元数据的加密数据分组。

    Method for recovering data in a tape drive system
    6.
    发明申请
    Method for recovering data in a tape drive system 有权
    在磁带机系统中恢复数据的方法

    公开(公告)号：US20070300133A1

    公开(公告)日：2007-12-27

    申请号：US11440682

    申请日：2006-05-24

    申请人： Richard Allen Gill ,  Howard H. Rather

    发明人： Richard Allen Gill ,  Howard H. Rather

    IPC分类号： G11C29/00

    CPC分类号： G11B20/18 ,  G11B2020/183 ,  G11B2020/1836 ,  G11B2220/90 ,  G11C2029/0411

    摘要： A method is disclosed. The method includes performing a first read operation at a tape drive, determining if a minimum number of data bytes have been recovered in the first read operation to perform error correcting codes (ECC), performing a second read operation if the minimum number of data bytes to perform ECC have not been recovered, determining if a minimum number of data bytes have been recovered in the second read operation to perform ECC, combining the recovered data bytes from the first read operation and the second read operation to form combined recovered data bytes, determining if a minimum number of data bytes are included in the combined recovered data bytes to perform ECC and performing ECC if the minimum number of data bytes are included in the combined recovered data bytes.

    摘要翻译： 公开了一种方法。 该方法包括在磁带驱动器处执行第一读取操作，确定在第一读取操作中是否已经恢复了最小数量的数据字节以执行纠错码（ECC），如果最小数量的数据字节数 执行ECC尚未恢复，确定在第二读取操作中是否已经恢复了最小数量的数据字节以执行ECC，将来自第一读取操作和第二读取操作的恢复数据字节组合以形成组合的恢复数据字节， 确定组合的恢复数据字节中是否包括最小数量的数据字节以执行ECC，并且如果最小数量的数据字节包括在组合的恢复数据字节中，则执行ECC。