Computer unit for a control device in a motor vehicle

USRE37966E1 · kind E1 · reissue

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Thomas Blank · Regensburg, DE
• Jochen Uhde · Eschborn, DE

Key dates

• Filing date: Apr 30, 2001
• Grant date: Jan 14, 2003
• Expiry date: Apr 30, 2021

Classification

• Technology area (CPC —): General

Abstract

The computing unit generates an output signal for controlling a function of the motor vehicle. The processing specification that is stored in a ROM of the computing unit, and with which, in particular, a logic function is described, can be changed even after the ROM mask has been created. Instead of the logic function, a truth table which represents the logic function is stored in an EPROM of the computing unit. A processing specification is stored in the ROM with which calculated variables are compared with the truth table.