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. 30, 2015
Filed:
Dec. 12, 2011
Daniel J. Post, Cupertino, CA (US);
Nir Jacob Wakrat, Los Altos, CA (US);
Vadim Khmelnitsky, Foster City, CA (US);
Daniel J. Post, Cupertino, CA (US);
Nir Jacob Wakrat, Los Altos, CA (US);
Vadim Khmelnitsky, Foster City, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
Systems and methods are disclosed for logical block address ('LBA) bitmap usage for a system having non-volatile memory ('NVM'). A bitmap can be stored in volatile memory of the system, where the bitmap can store the mapping statuses of one or more logical addresses. By using the bitmap, the system can determine the mapping status of a LBA without having to access the NVM. In addition, the system can update the mapping status of a LBA with minimal NVM accesses. By reducing the number of NVM accesses, the system can avoid triggering a garbage collection process, which can improve overall system performance.