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:
Jun. 16, 2011
Adam J. Overton, Redmond, WA (US);
Adam J. Overton, Redmond, WA (US);
Amazon Technologies, Inc., Reno, NV (US);
Abstract
Overall memory requirements are minimized by performing copy on write and collapse on write operations using memory pointers when storing data within memory pages. Multiple memory pointers may refer to a primary page storing a definitive copy of data. When that data is to be modified, a copy on write operation creates a second copy in another memory page which may then be modified and updates memory pointers accordingly. When data within two or more memory pages is identical to data within a primary page, a collapse on write operation updates memory pointers to refer to the primary page and de-allocates the duplicative and now unused memory pages.