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One of the key problems in radio frequency identification (RFID) is security and privacy. Many RFID authentication protocols have been proposed to preserve security and privacy of the system. Nevertheless, most of these protocols are analyzed and it is shown that they cannot provide security against some RFID attacks. Strong authentication and strong integrity (SASI) is the first ultra-lightweight...
In recent years, it is a very active direction of research to use neural network to control computer. Neural network is a burgeoning crossing subject, and the way it processes information is different from the past symbolic logic system, which has some unique properties: such as the distributed storage and parallel processing of information, the unity of the information storage and information processing,...
This paper proposed a whole new design for RV40(realvideo40) video decoder from FFmpeg(fast forward Moving Picture Experts Group),which is in lack of the ability to decode smoothly when decoding a period of high bit rate frames within some video streams. The design specially optimized the sub pixel interpolation algorithm, which is the core of motion compensation. The design uses detailed, different...
A novel stand-alone photovoltaic system topology is proposed in this paper, in which push-pull output circuit is adopted. The system consists of battery array, CUK charger, battery, boost transformation and inverter. Charging strategy based on the battery current regulation principle is adopted in CUK charger, by the way which propsed, a 100% battery state of charge is reached in shorter time. Boost...
After the shortage of the conventional lateral structure of SiGe HBT was analyzed, A new lateral structure was presented. In the meantime, the new fabrication process named buried metal self-aligned technique was designed. The measured frequency features show that the cut-off frequency fT of the device up to 12.3GHz and the maximum oscillation frequency fmax achieves 5.7GHz. Compared to the conventional...
Photovoltaic cell is a kind of DC current power with non-linear characteristic, and its output power varies with module temperature, solar isolation and loads. With the disadvantage of high cost, low transfer efficiency, it's necessary to track the MPP of the PV array all the time in order to improve the system efficiency. According to the mechanism and control adaptive MPPT method based on fuzzy...
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