Vehicle controlling apparatus
US6411872B1 · kind B1 · utility
7Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2001 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Aug 2, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0757
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To secure normal operation and then restart a microprocessor (CPU) when a CPU built into an on-vehicle electronic apparatus runs away. A number of on-vehicle loads driven from a CPU, a watchdog timer for monitoring the CPU to reset and restart it on occurrence of an abnormality, and a memory element for storing generation of the reset output are provided, and load driving elements or a load relay is rendered inoperative by output of the memory element. The memory element is reset by cutting off or reclosing the power switch, and an on-vehicle electronic apparatus returns to a normal state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.