Abnormal data management method, memory storage device, and memory control circuit unit

Abstract

A memory management method, a memory storage device, and a memory control circuit unit are provided. The memory management method includes: storing first management information in a rewritable non-volatile memory module, wherein the first management information reflects a storage status of abnormal data in a first physical unit in the rewritable non-volatile memory module; receiving a read command from a host system, wherein the read command instructs to read data stored in a logical unit corresponding to a physical node in the first physical unit; inquiring the first management information according to the read command; transmitting data read from the physical node to the host system if an inquiring result reflects that the abnormal data is not stored in the physical node; and transmitting error information to the host system if the inquiring result reflects that the abnormal data is stored in the physical node.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of China application serial no. 202110254803.X, filed on Mar. 9, 2021. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUNDTechnical Field[0002]The disclosure relates to a memory management technology, and particularly relates to a memory management method, a memory storage device, and a memory control circuit unit.Description of Related Art[0003]Digital cameras, mobile phones, and MP3 players have grown rapidly over the past few years, which has led to a rapid increase in consumer demand for storage media. Since the rewritable non-volatile memory module (for example, a flash memory) has characteristics such as non-volatile data, power saving, small size, and no mechanical structure, the rewritable non-volatile memory module is very suitable to be built into the various portable multimedia devices exemp...

AI Technical Summary

Benefits of technology

Improves data access quality by accurately identifying and handling abnormal data, reducing the transmission of corrupted or uncorrectable data, thereby enhancing user experience and device performance.

Problems solved by technology

Later, when the host system instructs to read the data (which is actually uncorrectable data), the memory storage device will regard the data as the normal data to be read from the target physical unit and transmitted to the host system, thereby reducing the data quality of read data.

Error information is transmitted to the host system when the inquiring result reflects that the abnormal data is stored in the at least one physical node.

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