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    • 2. 发明授权
    • Real-time hardware memory scrubbing
    • 实时硬件内存擦除
    • US06832340B2
    • 2004-12-14
    • US09769959
    • 2001-01-25
    • John E. LarsonJohn M. MacLarenRobert A. LesterGary J. PiccirilloJerome J. JohnsonPatrick L. Ferguson
    • John E. LarsonJohn M. MacLarenRobert A. LesterGary J. PiccirilloJerome J. JohnsonPatrick L. Ferguson
    • G06F1100
    • G06F11/1076G06F11/106G06F2211/1088
    • A system and technique for correcting data errors in a memory device. More specifically, data errors in a memory device are corrected by scrubbing the corrupted memory device. Generally, a host controller delivers a READ command to a memory controller. The memory controller receives the request and retrieves the data from a memory sub-system. The data is delivered to the host controller. If an error is detected, a scrub command is induced through the memory controller to rewrite the corrected data through the memory sub-system. Once a scrub command is induced, an arbiter schedules the scrub in the queue. Because a significant amount of time can occur before initial read in the scrub write back to the memory, an additional controller may be used to compare all subsequent READ and WRITE commands to those scrubs scheduled in the queue. If a memory location is rewritten with new data prior to scheduled scrub corresponding to the same address location, the controller will cancel the scrub to that particular memory location.
    • 一种用于校正存储器件中的数据错误的系统和技术。 更具体地,通过擦除损坏的存储器件来校正存储器件中的数据错误。 通常,主机控制器将READ命令传递给存储器控制器。 存储器控制器接收请求并从存储器子系统检索数据。 数据传送到主机控制器。 如果检测到错误,则通过存储器控制器感应擦除命令以通过存储器子系统重写校正的数据。 一旦引发了一个擦除命令,一个仲裁器会调度队列中的擦除。 因为在擦除写入内存之前的初始读取之前可能会发生大量时间,所以可以使用一个附加的控制器将所有后续的READ和WRITE命令与队列中调度的擦除进行比较。 如果在对应于相同地址位置的计划清除之前,用新数据重写存储器位置,则控制器将取消擦除该特定存储器位置。