Comprehensive exploration of the design space parameters at the system-level is a crucial task to evaluate architectural tradeoffs accounting for both energy and performance constraints. In this paper, we propose a system-level design methodology for ...

In this paper, we describe a software-controlled approach for adaptively minimizing energy in embedded systems for realtime multimedia processing. Energy is optimized by clock speed setting: the software controller dynamically adjusts processor clock ...

In this paper, we explore a hybrid global/local search optimization framework for dynamic voltage scaling in embedded multiprocessor systems. The problem is to find, for a multiprocessor system in which the processors are capable of dynamically varying ...

Power consumption is an important design parameter for embedded and portable systems. Software-controlled (or dynamic) power management (DPM) has recently emerged as an attractive alternative to inflexible hardware solutions. DPM for hard real-time ...

“Function Tokens” and “NOP Fills” are two methods proposed by various authors to deal with Instruction Pointer corruption in microcontrollers, especially in the presence of high electromagnetic interference levels. An empirical analysis to assess and ...

We address software optimization for embedded control systems. The Esterel language is used as the front-end specification; Esterel compiler v6 is used to partition the control circuit and data path; the resulting intermediate representation of the ...

The increasing complexity and decreasing time-to-market of embedded software forces designers to write more modular and reusable code, using for example object-oriented techniques and languages such as C++. The resulting memory and runtime overhead ...

Due to rapidly increasing system complexity, shortening time-to-market, and growing demand for hard real-time systems, formal methods are becoming indispensable in the synthesis of embedded systems, which must satisfy stringent temporal, memory, and ...

In communication refinement with multiple communication protocols and abstraction levels, the system specification is described by heterogeneous components in terms of communication protocols and abstraction levels. To adapt each heterogeneous component ...

In this paper we present an approach to mapping and scheduling of distributed embedded systems for hard real-time applications, aiming at minimizing system modification cost. We consider an incremental design process that starts from an already existing ...

A recent reduction in the time to market has led to the development of a new approach to IP-based design in which a highly parametric pre-designed system-on-a-chip is configured according to the application it will have to execute. The greatest problems ...

This paper addresses the concurrent task management of complex multi-media systems, like the MPEG4 IM1 player, with emphasis on how to derive energy-cost vs time-budget curves through task scheduling on a multi-processor platform. Starting from the ...

DSPs are typically equipped with indirect addressing modes with auto-increment and auto-decrement, which provide efficient address arithmetic calculations. Such an addressing mode is maximally utilized by careful placement of variables in storage, ...

To sustain the increases in processor performance, embedded and real-time systems need to find the best total schedule time when compiling their application. The optimal acyclic scheduling problem is a classical challenge which has been formulated using ...

New embedded systems must be power-aware, not just low-power. That is, they must track their power sources and the changing power and performance constraints imposed by the environment. Moreover, they must fully explore and integrate many novel power ...

This paper presents a constructive algorithm for memory-aware task assignment and scheduling, which is a part of the prototype system MATAS. The algorithm is well suited for image and video processing applications which have hard memory constraints as ...

The continued growth of microprocessors' performance and the need for better CPU utilization, has led to the introduction of the software peripherals' approach: By this term we refer to software modules that can successfully emulate peripherals that, ...

Models of computation like Kahn and dataflow process networks provide convenient means for modeling signal processing applications. This is partly due to the abstract primitives that these models offer for communication between concurrent processes. ...

Object-Oriented methodologies together with Formal Description Techniques (FDT) are a promising way to deal with the increasing complexity of hard real-time embedded systems. However, FDTs do not take into account non-functional aspects as real-time ...

In this paper, we address the problem of minimizing buffer storage requirement in buffer binding for SDF (Synchronous Dataflow) graphs. First, we propose a new two-port FIFO buffer structure that can be efficiently shared by two producer/consumer pairs. ...