Patents
US 12681110 B2: Continuously calibrated magnetic field sensor with in-band calibration
- Granted
- 2026-07-14
- Filed
- 2023-08-30 application 18458509
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A system, comprising: a reference magnetic field source that is configured to generate a reference magnetic field; a plurality of magnetic field sensing elements arranged in a sensing bridge, the sensing bridge being configured to sense the reference magnetic field and an external magnetic field simultaneously, the sensing bridge being configured to output a first signal and a second signal; a first circuit that is configured to generate a common mode signal of the sensing bridge based on the first signal and the second signal; an adjustment circuit that is configured to adjust a sensitivity of the sensing bridge based, at least in part, on a common mode signal of the sensing bridge; and a processing circuitry that is configured to use a differential signal of the sensing bridge to generate an output signal, the differential signal being based on a strength of the external magnetic field.
Source: PTBLXML, file of 2026-07-14 (ipgb20260714.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Allegro MicroSystems, LLC 910 patents | US company or organization | Manchester, NH | ALLEGRO MICROSYSTEMS, INC. SEC filer FUZZY low confidence: same name (legal endings aside), one of each nationally | PTBLXML, file of 2026-07-14 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Hernán D. Romero | Buenos Aires, AR | 55 | PTBLXML, file of 2026-07-14 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01R | Measuring electric variables; measuring magnetic variables | G01R33/0017 | PTBLXML, file of 2026-07-14 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-08-31 | Assignment Assignment of assignor's interest | ROMERO, HERNÁN D. signed 2023-08-23 ALLEGRO MICROSYSTEMS ARGENTINA S.A. signed 2023-08-29 | ALLEGRO MICROSYSTEMS, LLC MANCHESTER, NH | 64762/363 | 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.