Patents
US 12307097 B1: Systems and methods for sanitization of multi-level cell (MLC) memory
- Granted
- 2025-05-20
- Filed
- 2023-01-31 application 18103916
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A system for performing sanitization of multi-level cell (MLC) memory has a memory controller configured to read and buffer at least a first page of MLC memory that shares MLCs with at least a second page. The memory controller sanitizes the second page by performing at least one write operation to adjust the charge levels in the MLCs so that each bit of the second page is forced to the same value or to a value that mirrors the value of another bit of the same cell. Thus, for multiple pages sharing the same MLCs, the data of at least one page can be sanitized while the data of at least one other page is retained. Such sanitizing can be achieved without having to perform an erase operation, thereby helping to prevent or reduce memory degradation.
Source: PVGPATDIS, file of 2026-04-10 (ipg250520.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Board of Trustees of the Univeristy of Alabama, for and on behalf of the University of Alabama in Huntsville 88 patents | US company or organization | Huntsville, AL | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Biswajit Ray | Madison, AL | 34 | PVGPATDIS, file of 2026-04-10 | |
| Aleksandar Milenkovic | Madison, AL | 5 | PVGPATDIS, file of 2026-04-10 | |
| Md Raquibuzzaman | Huntsville, AL | 3 | PVGPATDIS, file of 2026-04-10 | |
| Matchima Buddhanoy | Huntsville, AL | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06F | Electric digital data processing | G06F3/0616 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-12-05 | Assignment Assignment of assignor's interest | BUDDHANOY, MATCHIMA signed 2024-12-03 MILENKOVIC, ALEKSANDAR signed 2024-12-03 RAQUIBUZZAMAN, MD signed 2024-12-03 RAY, BISWAJIT signed 2024-12-03 | BOARD OF TRUSTEES OF THE UNIVERSITY OF ALABAMA, FOR AND ON BEHALF OF THE UNIVERSITY OF ALABAMA IN HUNTSVILLE HUNTSVILLE, AL | 69499/896 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.