Chipped engine control unit system having copy protected and selectable multiple control programs
US7236877B2 · kind B2 · utility
5Cited by
31References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Feb 22, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P5/1514
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention discloses a method for preventing a control program written in a first engine control unit (ECU) from running in a second ECU, comprising obtaining an ID number from the first ECU; encrypting the ID number; writing the encrypted ID number into a flash memory of the first ECU; encrypting the ID number again and writing the encrypted ID number into an EEPROM of the first ECU; and requiring the control program to match the encrypted ID number placed in the flash memory and the EEPROM before running the program, and if the match fails, terminating the control program from running further.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.