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    • 242. 发明授权
    • Frequency modulation multiplex demodulation device
    • 频率调制多路解调装置
    • US06823071B2
    • 2004-11-23
    • US09822476
    • 2001-04-02
    • Yuji Yamamoto
    • Yuji Yamamoto
    • H04H500
    • H04H40/63H04B1/1676
    • A frequency modulation (FM) multiplex demodulation device is provided, in which the feeling of stereo is maintained excellent and the offensive noise to the ears can be reduced. The FM multiplex demodulation device includes: a filter for selecting a signal multiplexed by a subcarrier at 38 kHz from a composite signal; a noise detecting section for detecting noises from the composite signal; a ratio changing section for changing a composition ratio between an output signal from the filter and the composite signal, and for outputting a composed signal, the composition ratio being determined in response to the noises detected by the noise detecting section; a demodulating section for demodulating the multiplexed signal with multiplying the output signal from the ratio changing section by the subcarrier; an adding section for adding an output signal from the demodulating section to the composite signal; and a subtracting section for subtracting the output signal from the demodulating section from the composite signal.
    • 提供了一种频率调制(FM)多路解调装置,其中立体声的感觉保持良好,并且可以减少对耳朵的令人反感的噪音。 FM多路解调装置包括:滤波器,用于从复合信号中选择由38kHz的副载波复用的信号; 噪声检测部分,用于从复合信号中检测噪声; 用于改变来自滤波器的输出信号与复合信号之间的组成比的比率变化部分,并且用于输出合成信号,该组成比是响应噪声检测部分检测到的噪声而确定的; 解调部分,用于通过将来自比例变化部分的输出信号乘以副载波来解调多路复用信号; 加法部分,用于将来自解调部分的输出信号加到合成信号上; 以及减法部分,用于从复合信号中减去来自解调部分的输出信号。
    • 246. 发明授权
    • FM stereo signal demoudulating apparatus and method
    • FM立体声信号拆除装置及方法
    • US06714651B2
    • 2004-03-30
    • US09822484
    • 2001-04-02
    • Yuji Yamamoto
    • Yuji Yamamoto
    • H04H500
    • H04H20/48H04B1/1646
    • An FM stereo signal demodulating apparatus includes a bandpass filter 1 for extracting a 19 Hz signal from an FM detected signal; a first phase shifter 21 for phase-shifting the 19 Hz signal by 90 degree; a first XOR 22 for taking an exclusive OR between an output from the first phase-shifter 21 and the 19 KHz signal; a second phase shifter 23 for phase-shifting an output signal from said XOR 21; a second XOR 24 for taking an exclusive OR between an output from the first XOR 22 and an output from the second phase shifter; an inverter 25 for inverting an output from said XOR 24; a third phase-shifter for phase-shifting an output signal from said inverter 25; a third XOR for taking an exclusive OR between an output from said third phase-shifter 26 and an output from said first XOR 22; a first multiplier 3 for multiplying an output from said first XOR 22 and said FM detected signal; a second multiplier 4 for multiplying an output from said third XOR 27 and said FM detected signal; a third multiplier 5 for multiplying an output from said second multiplier 4 by {square root over (2)}−1; a first adder 6 for adding an output from said first multiplier 3 and an output from said third multiplier 5; a second adder for adding said FM detected signal and an output from said first adder 6; and a subtracter 8 for subtracting an output from said first adder 6 from said FM detected signal. In this configuration, the FM stereo demodulating apparatus can operate as a low speed.
    • FM立体声信号解调装置包括用于从FM检测信号中提取19Hz信号的带通滤波器1; 第一移相器21,用于将19Hz信号相移90度; 用于在第一移相器21的输出和19KHz信号之间进行异或运算的第一异或22; 第二移相器23,用于对来自所述XOR21的输出信号进行相移; 第二异或24用于在第一异或22的输出和第二移相器的输出之间进行异或; 用于反转来自所述XOR 24的输出的反相器25; 用于对来自所述逆变器25的输出信号进行相移的第三移相器; 用于从所述第三移相器26的输出和所述第一XOR22的输出之间取得异或的第三异或; 用于将来自所述第一XOR22的输出和所述FM检测信号相乘的第一乘法器3; 用于将来自所述第三XOR27的输出和所述FM检测信号相乘的第二乘法器4; 第三乘法器5,用于将来自所述第二乘法器4的输出乘以{平方根(2-1;用于相加来自所述第一乘法器3的输出的第一加法器6和来自所述第三乘法器5的输出的第一加法器6; 所述FM检测信号和来自所述第一加法器6的输出;以及减法器8,用于从所述FM检测信号中减去所述第一加法器6的输出,在该配置中,FM立体声解调装置可以以低速运行。
    • 250. 发明授权
    • Liquid crystal display and method of performing display operation
    • 液晶显示器和执行显示操作的方法
    • US06469765B1
    • 2002-10-22
    • US09592199
    • 2000-06-13
    • Hiroaki MatsuyamaYoshihiko HiraiKazumi KobayashiYuji YamamotoMamoru OkamotoMichiaki SakamotoShinichi Nakata
    • Hiroaki MatsuyamaYoshihiko HiraiKazumi KobayashiYuji YamamotoMamoru OkamotoMichiaki SakamotoShinichi Nakata
    • G02F11343
    • G02F1/134363G02F2001/13712
    • A liquid crystal display and a method of operating such liquid crystal display in which display operation is performed by changing a director of said liquid crystal molecules mainly in a plane parallel to first and second substrate forming a liquid crystal display panel. Liquid crystal molecules in the liquid crystal display panel have a negative anisotropy of permittivity. The liquid crystal display comprises: a first common electrode disposed on the side of said first substrate; an insulating layer formed on the first common electrode; at least one pixel electrodes each of which is formed on the insulating layer and has a plurality of opening portions; a second common electrode disposed on the side of the second substrate. The first common electrode comprises at least a particular portion formed in a particular area which extends from a non-opening portion to an opening portion of the pixel electrode and in which the first common electrode overlaps the non-opening portion in a cross section perpendicular to the substrates.
    • 一种液晶显示器和操作这种液晶显示器的方法,其中主要在与形成液晶显示面板的第一和第二基板平行的平面中改变所述液晶分子的指向器来执行显示操作。 液晶显示面板中的液晶分子具有负的各向异性介电常数。 液晶显示器包括:设置在所述第一基板侧的第一公共电极; 形成在所述第一公共电极上的绝缘层; 每个所述至少一个像素电极形成在所述绝缘层上并且具有多个开口部分; 设置在第二基板侧的第二公共电极。 第一公共电极至少包括形成在特定区域中的特定部分,该特定区域从像素电极的非开口部分延伸到开口部分,并且其中第一公共电极在与非开口部分重叠的截面中垂直于 底物。