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:
Mar. 02, 2021
Filed:
Mar. 12, 2018
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Richard M. Ehrlich, Saratoga, CA (US);
Andre C. Hall, Fremont, CA (US);
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION, Tokyo, JP;
Abstract
When a shingled magnetic recording (SMR) hard disk drive (HDD) receives a write command that references one or more target logical block addresses (LBAs) and determines that one or more target LBAs are included in a range of LBAs for which data are stored in a memory of the drive, additional data are written to the media cache of the SMR HDD along with the write data during the same disk access. The additional data include data that are stored in the volatile memory and are associated with one or more LBAs that are adjacent in LBA space to the target LBAs. The one or more LBAs that are adjacent in LBA space to the target LBAs may include a first group of LBAs that is adjacent to and follows the target LBAs and a second group of LBA that is adjacent to and precedes the target LBAs.