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:
Jan. 01, 2019
Filed:
Jun. 09, 2017
Silicon Motion, Inc., Jhubei, Hsinchu County, TW;
Chien-Cheng Lin, Yilan, TW;
Jie-Hao Lee, Keohsiung, TW;
SILICON MOTION, INC., Jhubei, Hsinchu County, TW;
Abstract
The present invention provides a data storage device including a flash memory and a controller. The flash memory has a plurality of SLC-spare blocks, a plurality of TLC-data blocks and a plurality of TLC-spare blocks. The controller writes a first data sector into a first TLC-spare block, and determines whether a first TLC-data block corresponding to a first logical address has valid data. When the first TLC-data block has valid data, the controller performs a reverse-lookup to obtain a second logical address corresponding to the first TLC-data block, releases the first TLC-data block, a second TLC-data block and a third TLC-data block which are mapped to the second logical address, and maps the first TLC-spare block to the first logical address.