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Invention Grant
US08555137B2 Method and system for reducing volatile DRAM power budget 有权
降低易失性DRAM功率预算的方法和系统

Method and system for reducing volatile DRAM power budget
Abstract:
A portable device (114) includes a power source (120), a volatile memory (118) requiring refreshing to avoid data loss, and a memory management module (116). The volatile memory (118) is operably coupled to the power source (120) for power. The memory management module (116) is operably coupled to the volatile memory (118). The memory management module (116) is also adapted to refresh the volatile memory (118) at a refresh rate which causes refresh-based errors and to correct the refresh-based errors. Also disclosed is a method for reduced power consumption by a volatile memory requiring refreshing to avoid data loss in which such a volatile memory is refreshed (122) at a refresh rate. All defective bits are detected (124) at the refresh rate. An error correction code is selected (126) for correcting the defective bits.
Abstract(Chinese):

便携式设备（114）包括电源（120），需要刷新以避免数据丢失的易失性存储器（118）和存储器管理模块（116）。 易失性存储器（118）可操作地耦合到电源（120）用于电力。 存储器管理模块（116）可操作地耦合到易失性存储器（118）。 存储器管理模块（116）还适于以刷新速率刷新易失性存储器（118），刷新率导致基于刷新的错误并纠正基于刷新的错误。 还公开了一种通过易失性存储器来降低能量消耗的方法，该易失性存储器需要刷新以避免数据丢失，其中这种易失性存储器以刷新速率刷新（122）。 以刷新率检测所有有缺陷的位（124）。 选择纠错码（126）以纠正有缺陷的位。

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