Patents
US 12755797 B2: Enhanced read retry (ERR) for data recovery in flash memory
- Granted
- 2026-10-06
- Filed
- 2023-07-19 application 18355090
- Type
- Utility · 11 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A flash memory includes an improved error handling algorithm for data recovery. Rather than running a default read recovery only, an Enhance Read Retry (ERR) process also is performed. After running a default read recovery, WLs are flagged with an error flag if the read was unsuccessful. The flag triggers ERR mode. ERR mode implements increase of the row read bias or implements increase of row read time or implements multiple pulses at the same voltage, or a combination of all three.
Source: PTBLXML, file of 2026-10-06 (ipgb20261006.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Sandisk Technologies, Inc. 4,933 patents | US company or organization | Milpitas, CA | SANDISK TECHNOLOGIES LLC State business registration FUZZY medium confidence: same name (legal endings aside) and state | PTBLXML, file of 2026-10-06 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Xuan Tian | Shanghai, CN | 26 | PTBLXML, file of 2026-10-06 | |
| Liang Li | Beijing, CN | PTBLXML, file of 2026-10-06 | ||
| Vincent Yin | Shanghai, CN | 12 | PTBLXML, file of 2026-10-06 | |
| Daniel J. Linnen | Naperville, IL | PTBLXML, file of 2026-10-06 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G11C | Static stores | G11C16/26 | PTBLXML, file of 2026-10-06 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-04-25 | Release of security interest Partial release of security interests | JPMORGAN CHASE BANK, N.A., AS AGENT signed 2025-04-24 | SANDISK TECHNOLOGIES, INC. MILPITAS, CA | 71382/1 | PASDL, file of 2026-10-15 |
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.