公开(公告)号：US11163694B2

公开(公告)日：2021-11-02

申请号：US16414768

申请日：2019-05-16

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo ,  Ding-Yuan Chen

IPC: G06F12/02 ,  G06F12/10 ,  G06F12/1036 ,  G06F12/12

Abstract: A memory control method for a rewritable non-volatile memory module is provided according to an exemplary embodiment of the disclosure. The method includes: maintaining first management information for identifying a first management unit in the rewritable non-volatile memory module; collecting first valid data from the first management unit according to the first management information without reading first mapping information from the rewritable non-volatile memory module in a data merge operation, and the first mapping information includes logical-to-physical mapping information related to the first valid data; and storing the collected first valid data into a recycling unit.

公开(公告)号：US20220075714A1

公开(公告)日：2022-03-10

申请号：US17031910

申请日：2020-09-25

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo ,  Ching-Yu Pan

IPC: G06F12/02 ,  G06F12/0873 ,  G06F12/0891 ,  G06F12/0817

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.

公开(公告)号：US11249898B1

公开(公告)日：2022-02-15

申请号：US17031910

申请日：2020-09-25

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo ,  Ching-Yu Pan

IPC: G06F12/02 ,  G06F12/0873 ,  G06F12/0817 ,  G06F12/0891

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.

公开(公告)号：US20210397375A1

公开(公告)日：2021-12-23

申请号：US16988731

申请日：2020-08-10

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo ,  Li Hsun Lien

IPC: G06F3/06 ,  G06F12/1009

Abstract: A memory control method for a rewritable non-volatile memory module is provided according to an exemplary embodiment of the disclosure. The method includes: collecting valid data from a source unit; copying a first logical to physical mapping table corresponding to the source unit to generate a second logical to physical mapping table; updating the second logical to physical mapping table according to a physical address of a recycling unit expected to be written, and the second logical to physical mapping table is recorded with mapping information corresponding to the recycling unit; copying the valid data from the source unit into the recycling unit; and updating first management information according to the second logical to physical mapping table.

公开(公告)号：US11755242B2

公开(公告)日：2023-09-12

申请号：US16988731

申请日：2020-08-10

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo ,  Li Hsun Lien

IPC: G06F3/06 ,  G06F12/1009

CPC classification number: G06F3/0659 ,  G06F3/0604 ,  G06F3/065 ,  G06F3/0679 ,  G06F12/1009 ,  G06F2212/657

Abstract: A data merging method can copy a new logical to physical mapping table and update a copied logical to physical mapping table according to a physical address of a recycling unit expected to be written at the same time. In this way, the number of times that the same logic to physical mapping table is read multiple times during the data merging operation can be reduced to improve the execution efficiency of the data merging operation, thereby increasing the system performance of the memory storage device.

公开(公告)号：US11036429B2

公开(公告)日：2021-06-15

申请号：US16431672

申请日：2019-06-04

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo ,  Wei-Jeng Wang

IPC: G06F3/06 ,  G06F12/06

Abstract: A memory control method for a rewritable non-volatile memory module is provided according to an exemplary embodiment of the disclosure. The memory control method includes: determining a first management unit as a source block and reading valid data from a first continuous data unit in the first management unit according to first interleaving information and second interleaving information, wherein the first interleaving information reflects a total number of the first continuous data units in the first management unit, and the second interleaving information reflects a total number of second continuous data units in a second management unit; storing the valid data into a recycling block; and erasing the first management unit.

公开(公告)号：US10310739B2

公开(公告)日：2019-06-04

申请号：US15690286

申请日：2017-08-30

Applicant: PHISON ELECTRONICS CORP.

Inventor： Chien-Wen Chen ,  Che-Yueh Kuo

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/02

Abstract: A memory management method is provided according to an exemplary embodiment of the disclosure. The method includes: obtaining a valid data parameter based on a valid data amount of valid data stored in a plurality of physical erasing units, and obtaining a first threshold value based on the valid data parameter. The method also includes: obtaining a first determination parameter based on a number of a plurality of first physical erasing units, and the first physical erasing units are physical erasing units being programmed for storing data by using a single-page programming mode. The method further includes: performing a garbage collection operation if the first determination parameter is greater than the first threshold value.

公开(公告)号：US20190012080A1

公开(公告)日：2019-01-10

申请号：US15690286

申请日：2017-08-30

Applicant: PHISON ELECTRONICS CORP.

Inventor： Chien-Wen Chen ,  Che-Yueh Kuo

IPC: G06F3/06 ,  G06F12/02

Abstract: A memory management method is provided according to an exemplary embodiment of the disclosure. The method includes: obtaining a valid data parameter based on a valid data amount of valid data stored in a plurality of physical erasing units, and obtaining a first threshold value based on the valid data parameter. The method also includes: obtaining a first determination parameter based on a number of a plurality of first physical erasing units, and the first physical erasing units are physical erasing units being programmed for storing data by using a single-page programming mode. The method further includes: performing a garbage collection operation if the first determination parameter is greater than the first threshold value.

公开(公告)号：US11144245B2

公开(公告)日：2021-10-12

申请号：US16660807

申请日：2019-10-23

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo

IPC: G06F3/06

Abstract: A memory control method is disclosed. The method includes: determining a mode for reading first data in a first management unit as a first mode or a second mode according to a data dispersion degree of the first data; reading the first data from the first management unit according to a physical distribution of the first data if the mode for reading the first data is determined as the first mode; and reading the first data from the first management unit according to a logical distribution of the first data if the mode for reading the first data is determined as the second mode. Furthermore, a memory storage device and a memory control circuit unit are also disclosed.

公开(公告)号：US20210064284A1

公开(公告)日：2021-03-04

申请号：US16660807

申请日：2019-10-23

Applicant: PHISON ELECTRONICS CORP.

Inventor： Che-Yueh Kuo

IPC: G06F3/06

Abstract: A memory control method is disclosed. The method includes: determining a mode for reading first data in a first management unit as a first mode or a second mode according to a data dispersion degree of the first data; reading the first data from the first management unit according to a physical distribution of the first data if the mode for reading the first data is determined as the first mode; and reading the first data from the first management unit according to a logical distribution of the first data if the mode for reading the first data is determined as the second mode. Furthermore, a memory storage device and a memory control circuit unit are also disclosed.