×

Process and circuit arrangement for monitoring the function of a program-controlled circuit

  • US 6,012,156 A
  • Filed: 08/21/1997
  • Issued: 01/04/2000
  • Est. Priority Date: 12/23/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. A process of monitoring the correct function of a program-controlled circuit, comprising:

  • during a working cycle of the program-controlled circuit, producing data words in the program run of the program-controlled circuit;

    transmitting the data words to a monitoring circuit at predetermined times;

    using the monitoring circuit to compare content and timing of the data words with predetermined data words and predetermined time intervals; and

    based on a result of comparing the content and timing of the data words with the predetermined data words and the predetermined time intervals, determining whether a malfunction has occurred wherein the data words produced in the program run of the program-controlled circuit provide sequence of words, which are compared for correlation with a corresponding predetermined sequence of words by the monitoring circuit.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×