The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2009
Filed:
May. 25, 2005
Todd Keaffaber, Plano, IL (US);
Douglas A. Kimber, Batavia, IL (US);
Todd Keaffaber, Plano, IL (US);
Douglas A. Kimber, Batavia, IL (US);
Alcatel-Lucent USA Inc., Muray Hill, NJ (US);
Abstract
A method is provided for injecting faults into an operational system containing software and hardware components to be tested. A fault injection routine is stored in a memory location of the system. An interrupt service routine, preferably operational during normal operation of the system is provided with a pointer to the fault injection routine. A fault injection routine is executed from within the interrupt service routine. In one embodiment, the interrupt service routine provides a clock or timing function. In another embodiment, a number of fault injection subroutines are accessible by the fault injection routine. A value is passed to the fault injection routine indicating the particular fault injection subroutine to be employed.