Fault capture/fault injection system
US4996688A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1988 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Sep 19, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2736
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for detecting and isolating the occurrence of faults in a digital electronic system so as to reduce the mean-time-to-repair. Associated with the logic circuitry to be monitored is a fault indicator which produces a fault signal when a malfunction occurs. Fault capture circuitry is arranged in a hierarchical manner and provides a group fault output signal when one of the fault indicators generates a fault signal. A programmable controller is provided which receives the group fault signal as an interrupt and which then responds by transferring registered fault event signals to a dynamic string register, rearming the error detection used to trap a fault signal and logging the fault location in a memory for later readout by a maintenance processor or the like. The dynamic string allows communications to take place using a scan/set protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.