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Mixed-criticality systems, in which multiple tasks of varying criticality execute on a single hardware platform, are an emerging research area in real-time embedded systems. High-criticality tasks require spatial and temporal isolation guarantees for independent verification, and the task set should efficiently utilize hardware resources. Hardware-based isolation is desirable but often underutilizes...
The common design problem in various approaches for self-checking adders is the fault propagation due to carry. Such a fault can misguide the system to detect the particular faulty module. In this paper, we proposed a self-checking Carry Select Adder (CSA) with fault localization ability. Our scheme can provide minimum area overhead for self-recovery process because instead of replacing the whole...
Integrated circuits fabricated in deep sub-micron technology are vulnerable to intermittent or transient faults which are the predominant cause of system failures. With continued scaling, operating voltage levels have reduced and resultant decrease in noise margins, the possibility of transient faults is likely to increase. Also, during operation in adverse environments, transient faults occur upon...
We contend that repeatability of execution times is crucial to the validity of testing of real-time systems. However, computer architecture designs fail to deliver repeatable timing, a consequence of aggressive techniques that improve average-case performance. This paper introduces the Precision-Timed ARM (PTARM), a precision-timed (PRET) microarchitecture implementation that exhibits repeatable execution...
ECG analysis represents a key way of determining the condition of a patient's heart and the accurate detection of the R-peak in the QRS complex of an ECG signal is one of the most important steps for proper diagnosis. In this paper we present R-READER: a Rapid-Ramp Effective Algorithm for Detection of ECG R-peaks; it uses the slopes between adjacent signals to determine the occurrence of the R-peak...
<?Pub Dtl?>Remote sensing data have become very widespread in recent years, and the exploitation of this technology has gone from developments mainly conducted by government intelligence agencies to those carried out by general users and companies. There is a great deal more to remote sensing data than meets the eye, and extracting that information turns out to be a major computational challenge...
In order to improve design time and efficiency of systems, large scale system design is often split into the design of separate functions, which are later integrated together. For real time safety critical applications, the ability to separately verify timing properties of functions is important. If the integration of functions on a particular platform destroys the timing properties of individual...
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