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This paper presents a data communication interface specifically designed to sustain the predictable operation of hard real-time systems. The general interface architecture, data format and communication protocols are discussed, along with a case study - the full-duplex SPI (serial peripheral interface) for the HARETICK kernel. Some of the most interesting experimental results are also presented.
The new trend of miniaturizing the electronic devices leads to the necessity of small, relatively independent entities which can interact with each other and with other entities forming collective, associative environments. This paper describes the formal specification of the eBML modeling language and its use in programming intelligent terminals like robots or intelligent sensor nodes which compose...
The transmission of streaming data, because of its real-time nature, is subject to bandwidth constraints. We propose a MPEG-2 compliant decoder which uses data hiding to transmit additional data with no extra bandwidth while creating an almost imperceptible degradation of the picture. The additional data can be anything from subtitles to correction signals and watermarking.
In this paper we address the topic of wireless sensor networks deployment, redeployment and post-deployment network maintenance based on mobile robotic nodes in order to achieve optimal connectivity and minimum energy consumption. The research is based on the CORE-TX platform, which provides the necessary hardware and software modules used for evaluation and testing of the solutions discussed. The...
Artificial distributed systems employ sophisticated algorithms that are well matured and efficient but require a high degree of computational power. Opposite to artificial distributed systems, natural systems display emergent behavior by employing extremely simple algorithms that are very efficient when dealing with large number of entities but are unpredictable and nondeterministic. The formal modeling...
Digital watermarking is a very common technique used against illicit copying and distribution of copyright material. This paper presents improved methods for information hiding. We propose a new approach, based on the decorrelation property of the Karhunen-Loeve transform (KLT).
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