The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2021
Filed:
Sep. 04, 2019
Silicon Motion, Inc., Jhubei, TW;
Che-Wei Hsu, Taichung, TW;
Hui-Ping Ku, Zhubei, TW;
SILICON MOTION, INC., Hsinchu County, TW;
Abstract
A data storage device is provided. The data storage device includes: a flash memory, a dynamic random access memory (DRAM), and a memory controller. The flash memory stores a logical-to-physical mapping (L2P) table that is divided into a plurality of group-mapping tables. The memory controller receives a host command from a host, wherein the host command includes one or more pieces of data and one or more corresponding logical addresses. The memory controller writes the data of the host command into active blocks of the flash memory. In response to the memory controller changing the active blocks into unsaved data blocks and a number of the unsaved data blocks being greater than or equal to an unsaved data block count threshold, the memory controller segmentally updates mapping relationships of the data in the unsaved data blocks, and writes the updated group-mapping tables into the flash memory.