Patents
US 12718842 B1: Early warning offtrack collision system for hard disk drives
- Granted
- 2026-08-25
- Filed
- 2025-03-24 application 19088040
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described are systems and methods during writing of data in hard disk drives in which adjacent track squeeze events are predicted by looking at the difference in position error signal (PES) between two tracks, one PES being a recorded value for data already written, and the other being a predicted value for an upcoming write. This approach recognizes that only using the PES of the track currently being written may not be a reliable indicator of sector failure, particularly in environments susceptible to vibration. This can reducing the unrecoverable error rate while maintaining in-system performance by stopping high-risk writes before they occur and by preventing unnecessary write fault flags.
Source: PTBLXML, file of 2026-08-25 (ipgb20260825.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Seagate Technology LLC 4,936 patents | US company or organization | Fremont, CA | PTBLXML, file of 2026-08-25 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Josiah Natan Wernow | San Diego, CA | 11 | PTBLXML, file of 2026-08-25 | |
| Joshua Ward Christensen | Savage, MN | 21 | PTBLXML, file of 2026-08-25 | |
| Brian Thomas Edgar | Minneapolis, MN | PTBLXML, file of 2026-08-25 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G11B | Information storage based on relative movement between record carrier and transducer | G11B5/59627 | PTBLXML, file of 2026-08-25 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2026-07-21 | Assignment Assignment of assignor's interest | WERNOW, JOSIAH NATAN signed 2025-03-20 CHRISTENSEN, JOSHUA WARD signed 2025-03-21 EDGAR, BRIAN THOMAS signed 2025-03-18 | SEAGATE TECHNOLOGY LLC FREMONT, CA | 75342/40 | 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.