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    • 1. 发明授权
    • Automatic frequency control circuit
    • 自动频率控制电路
    • US5289506A
    • 1994-02-22
    • US842540
    • 1992-02-27
    • Takamitsu KitayamaMasao MiyazakiTomozo OhtaTakahiro Chihara
    • Takamitsu KitayamaMasao MiyazakiTomozo OhtaTakahiro Chihara
    • H03J7/06H04L27/00H04L27/227H04L27/06
    • H04L27/2273H03J7/065H04L2027/003H04L2027/0073
    • An AFC circuit stabilizes the frequency of an intermediate frequency signal to be applied to a demodulation circuit. A frequency conversion circuit responds to a local oscillation signal generated from a voltage-controlled oscillation circuit to convert the frequency of a digital modulation signal and applies the converted frequency to the demodulation circuit. A carrier reproduction circuit in the demodulation circuit reproduces the carrier of the intermediate frequency signal to output a synchronizing detection signal. The frequency of the reproduced carrier is frequency-divided by a frequency dividing circuit. A frequency division output thereof is counted by a counter for a definite period. Data is outputted from a microprocessor in response to a count output of the counter and the synchronizing detection signal, and the data is then converted into an AFC voltage by a D/A converter. The converted voltage is supplied as a control voltage to the voltage-controlled oscillation circuit. A stable intermediate frequency signal can be obtained by frequency-dividing the frequency of the carrier and counting the frequency division output thereof.
    • AFC电路使要施加到解调电路的中频信号的频率稳定。 频率转换电路响应于从压控振荡电路产生的本地振荡信号,以转换数字调制信号的频率,并将转换的频率应用于解调电路。 解调电路中的载波再现电路再现中频信号的载波以输出同步检测信号。 再现载波的频率由分频电路分频。 其分频输出由计数器计数一定时间。 响应于计数器的计数输出和同步检测信号,从微处理器输出数据,然后通过D / A转换器将数据转换成AFC电压。 将转换的电压作为控制电压提供给压控振荡电路。 可以通过对载波的频率进行分频并对其分频输出进行计数来获得稳定的中频信号。
    • 9. 发明授权
    • Cable stayed suspension bridge making combined use of one-box and two-box girders
    • 电缆悬吊桥梁组合使用单箱和双箱梁
    • US07743444B2
    • 2010-06-29
    • US11570317
    • 2004-06-09
    • Jun MurakoshiKoichiro FumotoHideki ShimodoiMasao MiyazakiSyuji ShiraiMasato Suzawa
    • Jun MurakoshiKoichiro FumotoHideki ShimodoiMasao MiyazakiSyuji ShiraiMasato Suzawa
    • E01D11/00
    • E01D11/00
    • A cable-stayed suspension bridge having characteristics of a cable stayed bridge and those of a suspension bridge at the same and time and using one-box and two-box girders in combination is disclosed. The bridge grinder of the cable-stayed suspension bridge includes one-box girders that each extend to both sides through the respective one tower and a two-box girder set in a central portion of the center span between towers in the length direction of the bridge girder. The cable-stayed suspension bridge includes cable-stayed structures in which a respective one of the one-box girders is supported by the tower with plural cables and a suspension structure in which the two-box girder is supported by the plural towers with two main cables and plural hanger ropes. The two-box girder has a central ventilation opening in the central portion as viewed in a transverse direction thereof. The hanger ropes in the suspension structure extend from the main cables almost perpendicularly, and their lower end portions are connected to the end portions in the transverse direction of the central ventilation opening or in the vicinity thereof.
    • 公开了一种具有斜拉桥特性的斜拉桥,并且悬挂桥的特征在同一时间,并结合使用单箱和双箱梁。 斜拉桥的桥式研磨机包括单箱梁,其各自通过相应的一个塔架延伸到两侧,并且在桥梁的长度方向上的塔架之间的中心跨度的中心部分设置两个箱梁 梁。 缆索式悬索桥包括斜拉索结构,其中单个箱梁中的相应一个由具有多个电缆的塔架和悬架结构支撑,其中双箱梁由具有两个主体的多个塔架支撑 电缆和多个吊架绳索。 双箱梁在其横向方向上具有在中心部分中的中央通风开口。 悬挂结构中的衣架绳从主电缆几乎垂直地延伸,并且它们的下端部在中央通风口的横向或其附近与端部连接。
    • 10. 发明授权
    • Folding portable terminal
    • 折叠便携式终端
    • US07742285B2
    • 2010-06-22
    • US10580269
    • 2004-10-21
    • Katsutoshi IshikuraWaho OhMasao Miyazaki
    • Katsutoshi IshikuraWaho OhMasao Miyazaki
    • G06F1/16
    • H04M1/022G06F1/162G06F1/1677G06F1/1679G06F1/1686H04M2250/52Y10T16/54052
    • A folding portable terminal which can be changed into a desired shape depending on applications of functions such as a telephone, a digital camera, and the like. A folding portable terminal (1) comprises a case (10) with a display section (11) and a case (20) with an operating section (21), and the cases are foldably linked through a hinge mechanism. The hinge mechanism comprises a first hinge section (12) formed by providing a first rotation axis at substantially the center of the case (10) that can be rotated about the first rotation axis in the folding or opening direction relative to the case (20); a second hinge section (24) formed by providing a second rotation axis at substantially the upper end part of the case (20) so as to be parallel to the first rotation axis, the case (20) being rotated in the folding or opening direction relative to the case (10); and means (13a) for linking both ends of the first rotation axis and both ends of the second rotation axis. The hinge mechanism enables the display section (11) and the operating section (21) to be folded without being faced each other, and a user can operate the operating section (21) or view the display section (11) in the folded state.
    • 根据诸如电话,数码相机等功能的应用,可以将折叠便携式终端改变成期望的形状。 折叠便携式终端(1)包括具有显示部分(11)的壳体(10)和具有操作部分(21)的壳体(20),并且壳体通过铰链机构可折叠地连接。 铰链机构包括通过在壳体(10)的大致中心处提供第一旋转轴线而形成的第一铰链部分(12),所述第一旋转轴线可相对于壳体(20)在折叠或打开方向上围绕第一旋转轴线旋转, ; 第二铰链部分(24),其通过在壳体(20)的大致上端部处设置第二旋转轴线,以平行于第一旋转轴线形成,壳体(20)在折叠或打开方向上旋转 相对于情况(10); 以及用于连接第一旋转轴线的两端和第二旋转轴线的两端的装置(13a)。 铰链机构使得显示部分(11)和操作部分(21)能够折叠而不彼此面对,并且用户可以在折叠状态下操作操作部分(21)或观看显示部分(11)。