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Author: search.filters.author.Fukase, Masa AkiSubject: search.filters.subject.Mobile devices

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    Packet filtering circuits for smart phones
    (2012-12-01)
    Sato, Tomoaki
    ;
    Moungnoul, Phichet
    ;
    Fukase, Masa Aki
    Security measures for smart phones are important. Anti-virus software for smart phones can be used and the process consumes CPU resources. The CPUs of them are powerless CPU for an embedded system and those operations consume battery power. In this paper, the authors propose packet filtering circuits for smart phones. The packet filtering circuits are a firewall. Using the firewall is a means to protect smart phones from computer viruses and unauthorized access. In addition, they are used to control the power consumption and to reduce of detecting units for unauthorized access. The features of the circuits are to achieve those functions without reconstructing circuits. The operations of the circuits are verified by gate-level simulations.
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    Delay time analysis of reconfigurable firewall unit
    (2011-12-01)
    Sato, Tomoaki
    ;
    Moungnoul, Phichet
    ;
    Fukase, Masa Aki
    A firewall function is indispensable for mobile devices and it demands low-power operations. To realize this demand, the authors have developed a firewall unit with a reconfigurable device. The firewall unit needs a large amount of register for the timing adjustment of packets. Using the registers is the cause of power consumption. In this paper, to solve the problem of power consumption, the firewall unit has developed by using wave-pipelining technique and detailed delay time for the technique is analyzed.