Method and apparatus for synchronizing an industrial controller with a redundant controller
US7340574B2 · kind B2 · utility
11Cited by
5References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2005 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Jul 18, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for identifying memory modifications includes designating a first portion of a first memory as read-only. An abort condition is identified responsive to receiving a write instruction having a target address within the first portion. In response to the abort condition, a second portion of the first memory including at least the target address is flagged as being modified. The write instruction is executed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.