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:
Sep. 29, 2015
Filed:
May. 11, 2011
William B. Boyle, Lake Forest, CA (US);
Mei-man L. Syu, Fremont, CA (US);
William C. Cain, Foothill Ranch, CA (US);
William B. Boyle, Lake Forest, CA (US);
Mei-Man L. Syu, Fremont, CA (US);
William C. Cain, Foothill Ranch, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A hybrid drive is disclosed comprising a head actuated over a disk comprising a plurality of data tracks, and a non-volatile semiconductor memory (NVSM) comprising a plurality of memory segments. When a life remaining of the NVSM falls below a threshold, the NVSM is marked as read only. When a write command is received from a host including write data, and when the NVSM is marked as read only, the write data is written to the disk and a corresponding memory segment in the NVSM is invalidated.