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. 12, 2018
Filed:
May. 08, 2014
Kabushiki Kaisha Toshiba, Tokyo, JP;
Richard M. Ehrlich, Saratoga, CA (US);
Eric R. Dunn, Cupertino, CA (US);
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
A method and a system are provided for improving performance of a hybrid drive including a non-volatile semiconductor memory device partitioned into blocks, each of the blocks containing a plurality of sectors, and a magnetic storage device. Performance of the hybrid drive is improved by tracking data types of each sector stored in the blocks, the data types including a first data type, which is data that is unconditionally available for host accesses, a second data type, which is data that is conditionally available for host accesses, and a third data type, which is data unavailable for host accesses, and collecting erasable blocks from the blocks of the non-volatile semiconductor memory device according to the data types. The erasable blocks include a block that contains data of the second data type, such that the host may access from this block even though this block is erasable.