Patents
US 11301339 B1: System and method for hybrid kernel and user-space checkpointing using a character device
- Granted
- 2022-04-12
- Filed
- 2020-04-14 application 16848561
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A system, method, and computer readable medium for hybrid kernel-mode and user-mode checkpointing of multi-process applications using a character device. The computer readable medium includes computer-executable instructions for execution by a processing system. A multi-process application runs on primary hosts and is checkpointed by a checkpointer comprised of a kernel-mode checkpointer module and one or more user-space interceptors providing barrier synchronization, checkpointing thread, resource flushing, and an application virtualization space. Checkpoints may be written to storage and the application restored from said stored checkpoint at a later time. Checkpointing is transparent to the application and requires no modification to the application, operating system, networking stack or libraries. In an alternate embodiment the kernel-mode checkpointer is built into the kernel.
Source: PVGPATDIS, file of 2026-04-10 (ipg220412.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| OPEN INVENTION NETWORK LLC NC 995 patents | US company or organization | Durham, NC | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Allan Havemose | Arroyo Grande, CA | 176 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06F | Electric digital data processing | G06F11/1469 | 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 |
|---|---|---|---|---|---|
| 2022-09-29 | Assignment Assignment of assignor's interest | OPEN INVENTION NETWORK LLC signed 2022-08-11 | PHILIPS NORTH AMERICA LLC CAMBRIDGE, MA | 61258/318 | PASDL, file of 2026-10-15 |
| 2022-03-08 | Correction Corrective assignment to correct the spelling of the conveying party's first name previously recorded at reel: 053343 frame: 0887. assignor(s) hereby confirms the assignment. | HAVEMOSE, ALLAN signed 2011-03-24 | OPEN INVENTION NETWORK LLC DURHAM, NC | 59350/313 | ECORSEXC, file of 2026-09-25 |
| 2020-07-29 | Assignment Assignment of assignor's interest | HAVEMOSE, ALLEN signed 2011-03-24 | OPEN INVENTION NETWORK LLC DURHAM, NC | 53343/887 | 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.