Process and circuitry for monitoring a data processing circuit

US6115832A · kind A · utility

Assignee

• ITT MANUFACTURING ENTERPRISES LLC · US

Inventors

• Michael Zydek · Langgöns, DE
• Olaf Zinke · Hersbruck, DE
• Wolfgang Fey · Niedernhausen, DE
• Mario Engelmann · Rheinböllen, DE

Key dates

• Filing date: Nov 24, 1997
• Grant date: Sep 5, 2000
• Expiry date: Nov 24, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/406
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

To monitor a data processing circuit which includes two (or a plurality of) microprocessors or other data processing systems which are mounted on a joint chip and connected by data lines, the microprocessors jointly produce data words which form a data word sequence and are transmitted to a monitoring circuit at predetermined times. The monitoring circuit is arranged on a separate chip. The data words of the data word sequence are checked by the monitoring circuit with respect to the contents and time of appearance of the individual data words. It is favorable to make up the individual data words of partwords which are produced according to different algorithms.