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    • 4. 发明申请
    • NEAR-FIELD COMMUNICATION (NFC) SYSTEM AND METHOD FOR PRIVATE NEAR-FIELD COMMUNICATION
    • 近场通信(NFC)系统和私有邻近通信的方法
    • US20130185213A1
    • 2013-07-18
    • US13352024
    • 2012-01-17
    • Edin Insanic
    • Edin Insanic
    • H04B5/00G06Q20/32
    • G06Q20/32H04B5/0031
    • Embodiments of a near-field communication (NFC) system and method for private near-field communication are generally described herein. In some embodiments, a resonance-coupled channel is masked with a random channel-masking signal. The channel-masking signal may be scaled based on near-field channel conditions. Signals received through the channel may be unmasked with the scaled channel-masking signal to determine data that may have been conveyed by an NFC transmitting device by affecting the impedance of the resonance-coupled channel. In some embodiments, a reference signal may be scrambled with a mask to generate the channel-masking signal. The mask may include at least one of a random symbol mask, an amplitude mask and a phase mask. For additional privacy, the mask may include a random symbol mask and at least one of an amplitude mask and a phase mask.
    • 近场通信(NFC)系统和用于私有近场通信的方法的实施例一般地在此描述。 在一些实施例中,用随机信道掩蔽信号掩蔽谐振耦合信道。 可以基于近场信道条件来缩放信道掩蔽信号。 通过信道接收的信号可以用缩放的信道屏蔽信号来屏蔽,以通过影响谐振耦合信道的阻抗来确定可能由NFC发送设备传送的数据。 在一些实施例中,参考信号可以用掩码加扰以产生信道掩蔽信号。 掩模可以包括随机符号掩码,幅度掩码和相位掩模中的至少一个。 为了额外的隐私,掩模可以包括随机符号掩码和幅度掩码和相位掩模中的至少一个。