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:
Oct. 27, 2020
Filed:
Jul. 22, 2019
Silicon Motion, Inc., Jhubei, TW;
Wen-Sheng Lin, Kaohsiung, TW;
Silicon Motion, Inc., Hsinchu County, TW;
Abstract
A data storage device includes a memory controller and a memory device. The memory device includes a current memory block. The memory controller is coupled to the memory device and configured to access the memory device. In response to detection of a sudden power-off that has occurred before the memory device is powered up, the memory controller is configured to find a last valid page and a last valid word line corresponding to the last valid page by scanning a plurality of pages in the current memory block, and determine whether to use one or more empty pages belonging to a word line group that is the same as that of the last valid page according to a read count and an erase count of the current memory block.