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Data merge method, memory storage device and memory control circuit unit

a data merge and memory storage technology, applied in the field of flash memory technology, can solve the problem of low overall performance of the memory storage device, and achieve the effect of reducing the number of times the memory storage device is accessed

Active Publication Date: 2022-03-10
PHISON ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent provides a method for merging data in a memory storage device. It reduces the number of times the device is accessed, which improves its overall performance. The method uses mapping information shared by different physical units to simultaneously copy valid data to a recycling node and limits the data volume being copied to prevent data redundancy. This results in a more efficient data consolidation process.

Problems solved by technology

Consequently, the number of times the memory storage device is accessed may be increased to lower an overall performance of the memory storage device.

Method used

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  • Data merge method, memory storage device and memory control circuit unit
  • Data merge method, memory storage device and memory control circuit unit
  • Data merge method, memory storage device and memory control circuit unit

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Embodiment Construction

[0024]Reference will now be made in detail to the present preferred embodiments of the disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.

[0025]Embodiments of the disclosure may comprise any one or more of the novel features described herein, including in the detailed description, and / or shown in the drawings. As used herein, “at least one,”“one or more,” and “and / or” are open-ended expressions that are both conjunctive and disjunctive in operation. For instance, each of the expressions “at least on of A, B and C,”“at least one of A, B, or C,”“one or more of A, B, and C,”“one or more of A, B, or C,” and “A, B, and / or C” means A alone, B alone, C alone, A and B together, A and C together, B and C together, or A, B and C together.

[0026]It is to be noted that the term “a” or “an” entity refers to one or more of that entity. As such, the ...

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PUM

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Abstract

A data merge method for a rewritable non-volatile memory module including a plurality of physical units is provided. The method includes: selecting at least one first physical unit and at least one second physical unit from the physical units; reading first mapping information from the rewritable non-volatile memory module, and the first mapping information includes mapping information of the first physical unit and mapping information of the second physical unit; copying valid data collected from the first physical unit and valid data collected from the second physical unit to at least one third physical unit of the physical units according to the first mapping information; and when a data volume of valid data copied from the second physical unit to the third physical unit reaches a data volume threshold, stopping collecting valid data from the second physical unit, and continuing collecting valid data from the first physical unit.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the priority benefit of Taiwan application serial no. 109130306, filed on Sep. 4, 2020. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUND1. Technology Field[0002]The disclosure relates to a flash memory technology, and more particularly, to a data merge method, a memory storage device and a memory control circuit unit.2. Description of Related Art[0003]The markets of digital cameras, cellular phones, and MP3 players have expanded rapidly in recent years, resulting in escalated demand for storage media by consumers. The characteristics of data non-volatility, low power consumption, and compact size make a rewritable non-volatile memory module (e.g., flash memory) ideal to be built in the portable multi-media devices as cited above.[0004]When the memory storage device leaves the factory, a part of physical units in the mem...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F12/02G06F12/0873G06F12/0891G06F12/0817
CPCG06F12/0246G06F12/0873G06F2212/7209G06F12/0822G06F2212/7201G06F12/0891G06F2212/1032G06F2212/1016G06F2212/7205G06F2212/1004G06F11/1048
Inventor KUO, CHE-YUEHPAN, CHING-YU
Owner PHISON ELECTRONICS