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:
Jul. 20, 2021
Filed:
Sep. 23, 2019
SK Hynix Inc., Gyeonggi-do, KR;
Young Ick Cho, Seoul, KR;
Sung Kwan Hong, Seoul, KR;
SK hynix Inc., Gyeonggi-do, KR;
Abstract
A data storage device includes a nonvolatile memory device and a memory having an unmap command queue configured to store an unmap command received from a host, and a sequential unmap table configured to store a sequential unmap entry corresponding to an unmap command for sequential logical addresses, and a controller including a first core and a second core. The second core configured to read an unmap-target map segment including the sequential logical addresses from an address mapping table stored in the nonvolatile memory device, store the read unmap-target map segment in the memory, and change, within the stored unmap-target map segment, physical addresses mapped to the sequential logical addresses to trim instruction data at the same time, the trim instruction data being included in the sequential map entry.