×

Method for monitoring program flow to verify execution of proper instructions by a processor

  • US 7,168,065 B1
  • Filed: 01/24/2000
  • Issued: 01/23/2007
  • Est. Priority Date: 03/09/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for monitoring progress with the execution of a linear sequence of instructions in a computer program stored in a computer-readable memory, comprising the steps of analysing the sequence of instructions transmitted from said memory to a processor intended to execute the program being monitored by extracting a data item from each instruction transmitted to the processor and performing a calculation on said data item, and verifying the result of this analysis by comparing the result of said calculation to reference data, recorded with said program, wherein the reference data comprises a value pre-established so as to correspond to the result of the analysis produced during the monitoring method only if all the instructions in the sequence of instructions have actually been analysed during the running of the program.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×