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    • 2. 发明授权
    • Low cost tamper-resistant method for write-once read many (WORM) storage
    • 低成本的防篡改方法,一次写入许多(WORM)存储
    • US06272086B1
    • 2001-08-07
    • US08976209
    • 1997-11-18
    • Glen Alan JaquetteLeonard George JesionowskiJohn Edward KulakowskiJudson Allen McDowell
    • Glen Alan JaquetteLeonard George JesionowskiJohn Edward KulakowskiJudson Allen McDowell
    • G11B509
    • G11B27/3027G11B7/00745G11B11/10502G11B11/10584G11B11/10595G11B13/04G11B20/1217
    • A tamper-resistant Hard-WORM data storage system and a magneto-optical storage disk therefor is disclosed. The disk has a plurality of sectors thereon containing one or more uniquely formatted fields to provide an indication that the disk is a Write-Once Read Many (WORM) disk. A motor is provided in the storage system for rotating the disk at an operational rotational speed and a laser read/write (R/W) head unit is provided for reading and writing information in the sectors. A read/write (R/W) control unit within the storage system controls read and write operations on the disk in response to commands from an external data processing device, such as a computer. The R/W control unit is adapted to decode the one or more uniquely formatted fields in order to read and correctly interpret information contained therein. In an additional aspect of the disclosure, the R/W control unit disables erase operations in sectors containing uniquely formatted fields but allows such operations in sectors that do not contain such fields in order to permit calibration testing and the maintenance of media defect lists, first available sector lists and the like.
    • 公开了一种防篡改的Hard-WORM数据存储系统及其磁光存储盘。 磁盘具有多个扇区,其上包含一个或多个唯一格式化的字段以提供该盘是一次写入多次(WORM)磁盘的指示。 在存储系统中设置有用于以操作旋转速度旋转盘的电动机,并且提供用于在扇区中读取和写入信息的激光读/写(R / W)头单元。 存储系统内的读/写(R / W)控制单元响应来自诸如计算机的外部数据处理设备的命令来控制磁盘上的读写操作。 R / W控制单元适于对一个或多个唯一格式化的字段进行解码,以便读取并正确地解读其中包含的信息。 在本公开的另一方面,R / W控制单元在包含唯一格式化字段的扇区中禁用擦除操作,但是在不包含这些字段的扇区中允许这样的操作,以便允许校准测试和媒体缺陷列表的维护 可用扇区列表等。