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Board of Trustees of University of Illinois Assigned Patent

Capturing time-varying storage of data in memory device for recovery purposes

Board of Trustees of the University of Illinois, Urbana, IL, has been assigned a patent (11,327,886) developed by Huang, Jian, Champaign, IL, for capturing time-varying storage of data in memory device for data recovery purposes.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A memory device (or memory sub-system) includes one or more memory components having multiple blocks, the multiple blocks containing pages of data. A processing device is coupled to the one or more memory components. The processing device to execute firmware to: track write timestamps of the pages of data that have been marked as invalid, retain a storage state stored for each page marked as invalid, wherein invalid data of the marked pages remains accessible via the storage states, in response to a write timestamp of a page being beyond a retention time window, mark the page as expired, indicating that the page is an expired page, and reclaim the expired page for storage of new data during a garbage collection operation.

The patent application was filed on July 9, 2020 (16/946,873).