5. Fast Processor Recover Techniques with Micro Rollback

  • Matthias Pflanz
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2270)


The precursory proposed techniques for on-line observation of processor components and signals was developed in order to detect errors within a single clock cycle. According to Fig. 16, this is a precaution to carry out a fast error handling procedure in order to avoid a functional error. In this thesis, the focus on a fast error detection and recovery is directed at embedded processor- or micro-controller-based applications with a highly safety-critical relevance or strong real-time constraints. Methods should have a high efficiency, that means the overhead should be significantly less than the silicon area for TMR or quadruple modular redundancy. Furthermore, different handling- strategies for different fault-classes (transient, permanent) are needed. A distinction between transient effects and permanent faults (of static or dynamic origin) is important, since only permanent faults need additional stand-by hardware for compensation.


Error Detection Transient Fault Test Circuit Permanent Fault Gate Count 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Matthias Pflanz
    • 1
  1. 1.Department of Processor Development IIIBM Deutschland Entwicklung GmbHBöblingenGermany

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