SMS (Short Message Service) provides direct and instant communication among mobile phone users and has become an extremely popular communication tool nowadays. However, during the transmission of SMS, the message could be logged by the service provider or eavesdropped by a third party. An SMS mess.....
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Conventional digital holography involves a high amount of computation to generate an object scene, imposing a significant bottleneck to practical applications. The invention presents techniques for efficiently generating full parallel 3D holographic images of a 3D real or synthetic object scene. The.....
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During the turn-on and turn-off switching processes, power converters have to withstand high voltage and current, leading to high switching losses and stresses. The invention is a passive lossless snubber cell with minimum stress and wide soft-switching range. The energy reset / recirculation proces.....
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USB Encryption Token is a strong encryption device for protecting data stored in portable storage media which include USB flash drives and memory cards. Simply plug the USB Encryption Token into a computer, it will start searching for all USB flash drives or memory cards and performing encryption au.....
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This novel antenna developed by CityU has high gain and wideband characteristics, and can be used as an element for constructing antenna arrays. Bandwidth and gain enhancement techniques cannot usually be implemented at the same time, since the structure may become very complicated or bulky. The inv.....
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