In the last few decades we have witnessed an increase in CPU performance, which has been made possible thanks to the increase in the clock frequency and the increase in the number of transistors in the unit of space. In the last few years, however, we reached the limit for the clock and for the miniaturization of the transistor grid. Beyond this growth new problems arose such as the disposal of the produced heat and the minimum distance to be respected between elements for the electrical signals transfer. So the chip makers, to further increase the processing power of the processors, started to insert more cores on the same chip. The presence of several cores undoubtedly improves performance and improves consumption, but the ability to transfer data between cores and components remains limited by the number of pins of the cores themselves. Furthermore, it is necessary to manage the synchronization between cores during the access to common resources and all those multi-core architectures typical problems. This article provides a different approach to improve the computing capacity of the CPUs that is based on the extension of the binary system in a multi-value coding system or, commonly, called MVL. Although this direction has already been explored, the idea behind the study is in the representation of the generic function in the MVL domain. This representation has a link to the binary system and a surprisingly greater simplicity of the corresponding digital circuits (combinatorial and sequential). A different mathematical approach is thus provided for the realization of the multivalue logic gates. This could enable the use of different data encoding systems no longer linked to the voltage value of a signal but to other physical quantities as it happens at present, for example, in the world of telecommunications.
Wireless systems providing accurate localization information to a visitor or a group of visitors moving in a cultural heritage area can be used to enhance/create new multimedia communication services aimed at improving their cultural experience. In this paper we propose an effective architecture for a low cost system providing localization information. It is based on the deployment of a (very) large number of passive RFIDs spared inside the cultural area. As shown in this paper, due to the adoption of smart tagged RFIDs tapes the setup and maintenance of the system is greatly simplified independently of the area (indoor and/or outdoor) where the localization system is deployed. System performances are analyzed by considering a study case. Evaluation is carried out in terms of the achievable accuracy in the position estimate and the costs of the RFID part of the system. Finally, a discussion on the additional wireless traffic required for transporting information for localization to the central (multimedia) server, is presented. Accuracy below one meter can be theoretically achieved by properly selecting the density of RFIDs e.g. the number of smart tapes and the RFIDs' distance on the tape
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