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    • 7. 发明授权
    • Signal processing apparatus and method, and digital data reproducing apparatus
    • 信号处理装置和方法以及数字数据再现装置
    • US07139146B2
    • 2006-11-21
    • US10484427
    • 2003-05-22
    • Tomoyuki HiuraHiroyuki Ino
    • Tomoyuki HiuraHiroyuki Ino
    • G11B5/09
    • H03H17/0288G11B20/10009G11B20/10046G11B20/10055G11B20/10083G11B20/10101
    • A replay signal, obtained on reproducing a recording medium, on which has been recorded a digital signal, is supplied to an input terminal (1), and quantized by an A/D converter (8). The so quantized signal is processed by an integrator (20), formed by a first order IIR filter, so as to be adjusted in gain by an amplifier (21). The quantized replay signal is also processed by a differentiator formed by a combination of a first order FIR filter (22) and a first order IIR filter (23) so as to be then adjusted in gain by an amplifier (24). The resulting signal is then supplied to an adder (25) where it is subtracted from an output signal of the amplifier (21). In this manner, the differentiation/integration equalizer, formed by an analog circuit, is constructed by a digital circuit of a simplified configuration without raising the number of orders of the filters. The replay signal is processed by differentiation/integration such as to satisfy the equalization standard.
    • 在再现已经记录了数字信号的记录介质上获得的重放信号被提供给输入端(1),由A / D转换器(8)进行量化。 这样量化的信号由由第一级IIR滤波器形成的积分器(20)处理,以便由放大器(21)调节增益。 量化的重放信号也由由一阶FIR滤波器(22)和一阶IIR滤波器(23)的组合形成的微分器处理,以便然后由放大器(24)调节增益。 然后将所得到的信号提供给加法器(25),在该加法器中从放大器(21)的输出信号中减去该加法器。 以这种方式,由模拟电路形成的微分/积分均衡器由简化配置的数字电路构成,而不增加滤波器的次数。 重放信号通过差分/积分来处理,以满足均衡标准。
    • 8. 发明申请
    • WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION SYSTEM
    • 无线通信设备和无线通信系统
    • US20100048144A1
    • 2010-02-25
    • US12538569
    • 2009-08-10
    • Tadashi FukamiTomoyuki Hiura
    • Tadashi FukamiTomoyuki Hiura
    • H04B1/00
    • H04B5/02G06K19/0723
    • A wireless communication device is provided and includes: a first data communication unit performing communication by an electromagnetic induction system, a second data communication unit performing communication at higher speed than the first communication unit by using a system and/or a communication frequency band different from the first data communication unit, and a control unit controlling communication operations of the first data communication unit and the second data communication unit. The control unit performs communication by using the second data communication unit while a carrier signal is transmitted from the first data communication unit.
    • 提供了一种无线通信装置,包括:通过电磁感应系统进行通信的第一数据通信单元,通过使用与第一通信单元不同的系统和/或通信频带,以比第一通信单元更高的速度进行通信的第二数据通信单元 第一数据通信单元和控制第一数据通信单元和第二数据通信单元的通信操作的控制单元。 当从第一数据通信单元发送载波信号时,控制单元通过使用第二数据通信单元执行通信。
    • 9. 发明授权
    • Wireless communication device and wireless communication system
    • 无线通信设备和无线通信系统
    • US08532570B2
    • 2013-09-10
    • US12538569
    • 2009-08-10
    • Tadashi FukamiTomoyuki Hiura
    • Tadashi FukamiTomoyuki Hiura
    • H04B5/00H04B7/00
    • H04B5/02G06K19/0723
    • A wireless communication device is provided and includes: a first data communication unit performing communication by an electromagnetic induction system, a second data communication unit performing communication at higher speed than the first communication unit by using a system and/or a communication frequency band different from the first data communication unit, and a control unit controlling communication operations of the first data communication unit and the second data communication unit. The control unit performs communication by using the second data communication unit while a carrier signal is transmitted from the first data communication unit.
    • 提供了一种无线通信装置,包括:通过电磁感应系统进行通信的第一数据通信单元,通过使用与第一通信单元不同的系统和/或通信频带,以比第一通信单元更高的速度进行通信的第二数据通信单元 第一数据通信单元和控制第一数据通信单元和第二数据通信单元的通信操作的控制单元。 当从第一数据通信单元发送载波信号时,控制单元通过使用第二数据通信单元执行通信。