Device having a modifiable code for protecting against theft of automobile vehicles
US4888575A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Dec 30, 1987 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | Dec 30, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/0069
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The device can be applied to vehicles provided with an electronic control device for the vehicle engine. The protecting device for includes a keyboard for entering a user's code, a microprocessor for converting entered data coming from the keyboard into an output message containing the user's code, programmable and non-volatile memory for storing the code for unlocking the engine electronic control device, a microprocessor for comparing the unlocking code stored in the memory with the user's code contained in said message coming from the keyboard and unlocking the engine electronic control device when there is coincidence of the code contained in the memory with that contained in said output message, and the microprocessor and the memory being capable of effecting replacement of the unlocking code of the engine control device with a new unlocking code through action on the keyboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.