Apparatus for rewriting a memory in a vehicle mounted ECU through communications
US6957136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2002 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Nov 20, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/102
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A memory rewriting apparatus can rewrite control programs for a vehicle mounted ECU through communications reliably and easily. A transmission and reception circuit communicates with a data communications device that sends program data. An ID check circuit checks based on an ID check code attached to the data whether a subject vehicle on which the apparatus is installed is a vehicle to be rewritten. A communications condition determination device determines whether the communications condition is suitable for communications. A control part (MPU) controls writing program data into a memory of the vehicle mounted ECU. The control part notifies the non-completion of rewriting to the data communications device when determined, before and during data rewriting, that the communications condition is unsuitable, and it also notifies the completion of rewriting to the data communications device after the rewriting of the data has been completed, when determined that the communications condition is suitable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.