Hubs for VirtuosoNext: Online verification of real-time coordinators

Safety Verification of Real Time Systems Serving Periodic Devices

In real-time systems response to a request from a controlled object must be correct and timely. Any late response to a request from such a device might lead to a catastrophy. The possibility of a task overrun, i.e., missing the deadline for completing a requested task, must be checked and removed during the design of such systems. Safe design of real-time systems running periodic tasks under th...

An Abstraction Technique for Real-time Verification

In real-time systems, correctness depends on the time at which events occur. Examples of real-time systems include timed protocols and many embedded system controllers. Timed automata are an extension of finite-state automata that include real-valued clock variables used to measure time. Given a timed automaton, an equivalent finite-state region automaton can be constructed, which guarantees de...

Real-Time Verification Techniques for Untimed Systems

Online Schedulability Tests for Real-Time Systems

Modern real-time systems have to be adaptable and flexible to deal with non-periodic events, requiring a means of checking for schedulability during execution time. Thus, online schedulability tests are a fundamental building block in the design of such systems. Usually, when such tests are carried out at time t they either consider or not future events that occur after t. Those that take such ...

Online Spatial Normalization for Real-Time fMRI

Real-time functional magnetic resonance imaging (rtfMRI) is a recently emerged technique that demands fast data processing within a single repetition time (TR), such as a TR of 2 seconds. Data preprocessing in rtfMRI has rarely involved spatial normalization, which can not be accomplished in a short time period. However, spatial normalization may be critical for accurate functional localization...