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    • 4. 发明授权
    • Method of canceling noise contained in received signal
    • 消除接收信号中包含的噪声的方法
    • US08412140B2
    • 2013-04-02
    • US12950477
    • 2010-11-19
    • Makoto Murakami
    • Makoto Murakami
    • H04B1/10H04B17/00
    • H04B1/28H04B1/0007
    • A multiplication section multiplies a signal output from a GPS antenna by a local oscillation signal generated by a local oscillation signal generation section to down-convert the signal output from the GPS antenna into an intermediate-frequency signal. A sampling circuit section samples a generated signal generated by a portable electronic circuit using a sampling clock signal having a frequency lower than a frequency of the generated signal. An attenuation section generates a cancellation signal by attenuating the sampled signal, and an addition section adds the cancellation signal to the signal output from the multiplication section to cancel in-band noise superimposed on the received signal.
    • 乘法部分将由GPS天线输出的信号乘以由本地振荡信号产生部分产生的本地振荡信号,以将从GPS天线输出的信号下变频为中频信号。 采样电路部分使用具有低于所产生的信号的频率的频率的采样时钟信号来对由便携式电子电路产生的生成信号进行采样。 衰减部通过衰减采样信号来产生消除信号,并且加法部分将抵消信号与从乘法部分输出的信号相加以消除叠加在接收信号上的带内噪声。
    • 5. 发明授权
    • Production of metal and metal-alloy nanoparticles with high repetition rate ultrafast pulsed laser ablation in liquids
    • 在液体中生产金属和金属合金纳米粒子,具有高重复率超快脉冲激光烧蚀
    • US08246714B2
    • 2012-08-21
    • US12320617
    • 2009-01-30
    • Bing LiuZhendong HuMakoto MurakamiYong Che
    • Bing LiuZhendong HuMakoto MurakamiYong Che
    • B22F9/02B22F9/04
    • B02C19/18B01J13/0043B01J19/121B22F1/0022B22F9/04B22F2999/00B82Y30/00B22F2202/11
    • Various embodiments include a method of producing chemically pure and stably dispersed metal and metal-alloy nanoparticle colloids with ultrafast pulsed laser ablation. A method comprises irradiating a metal or metal alloy target submerged in a liquid with ultrashort laser pulses at a high repetition rate, cooling a portion of the liquid that includes an irradiated region, and collecting nanoparticles produced with the laser irradiation and liquid cooling. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beams, a metal or metal alloy target submerged in a liquid, and a liquid circulating system to cool the laser focal volume and collect the nanoparticle products. By controlling various laser parameters, and with optional liquid flow movement, the method provides stable colloids of dispersed metal and metal-alloy nanoparticles. In various embodiments additional stabilizing chemical agents are not required.
    • 各种实施方案包括用超快速脉冲激光烧蚀制备化学纯的和稳定分散的金属和金属合金纳米颗粒胶体的方法。 一种方法包括以高重复率以超短激光脉冲辐射淹没在液体中的金属或金属合金靶,冷却包括辐射区域的液体的一部分,以及收集通过激光照射和液体冷却产生的纳米颗粒。 该方法可以用高重复率超快脉冲激光源,用于聚焦和移动脉冲激光束的光学系统,浸没在液体中的金属或金属合金靶和液体循环系统来实现,以冷却激光聚焦体积, 收集纳米颗粒产品。 通过控制各种激光参数,并具有可选的液流运动,该方法提供分散金属和金属合金纳米粒子的稳定胶体。 在各种实施方案中,不需要另外的稳定化学试剂。
    • 6. 发明授权
    • Method of canceling noise contained in received signal
    • 消除接收信号中包含的噪声的方法
    • US07860475B2
    • 2010-12-28
    • US11959088
    • 2007-12-18
    • Makoto Murakami
    • Makoto Murakami
    • H04B1/10H04B17/00
    • H04B1/28H04B1/0007
    • A multiplication section multiplies a signal output from a GPS antenna by a local oscillation signal generated by a local oscillation signal generation section to down-convert the signal output from the GPS antenna into an intermediate-frequency signal. A sampling circuit section samples a generated signal generated by a portable electronic circuit using a sampling clock signal having a frequency lower than a frequency of the generated signal. An attenuation section generates a cancellation signal by attenuating the sampled signal, and an addition section adds the cancellation signal to the signal output from the multiplication section to cancel in-band noise superimposed on the received signal.
    • 乘法部分将由GPS天线输出的信号乘以由本地振荡信号产生部分产生的本地振荡信号,以将从GPS天线输出的信号下变频为中频信号。 采样电路部分使用具有低于所产生的信号的频率的频率的采样时钟信号来对由便携式电子电路产生的生成信号进行采样。 衰减部通过衰减采样信号来产生消除信号,并且加法部分将抵消信号与从乘法部分输出的信号相加以消除叠加在接收信号上的带内噪声。
    • 7. 发明申请
    • Production of metal and metal-alloy nanoparticles with high repetition rate ultrafast pulsed laser ablation in liquids
    • 在液体中生产金属和金属合金纳米粒子,具有高重复率超快脉冲激光烧蚀
    • US20100196192A1
    • 2010-08-05
    • US12320617
    • 2009-01-30
    • Bing LiuZhendong HuMakoto MurakamiYong Che
    • Bing LiuZhendong HuMakoto MurakamiYong Che
    • C22C5/04B22F9/04B23K26/08C22C5/02C22C5/06C22C9/00B01F3/12
    • B02C19/18B01J13/0043B01J19/121B22F1/0022B22F9/04B22F2999/00B82Y30/00B22F2202/11
    • Various embodiments include a method of producing chemically pure and stably dispersed metal and metal-alloy nanoparticle colloids with ultrafast pulsed laser ablation. A method comprises irradiating a metal or metal alloy target submerged in a liquid with ultrashort laser pulses at a high repetition rate, cooling a portion of the liquid that includes an irradiated region, and collecting nanoparticles produced with the laser irradiation and liquid cooling. The method may be implemented with a high repetition rate ultrafast pulsed laser source, an optical system for focusing and moving the pulsed laser beams, a metal or metal alloy target submerged in a liquid, and a liquid circulating system to cool the laser focal volume and collect the nanoparticle products. By controlling various laser parameters, and with optional liquid flow movement, the method provides stable colloids of dispersed metal and metal-alloy nanoparticles. In various embodiments additional stabilizing chemical agents are not required.
    • 各种实施方案包括用超快速脉冲激光烧蚀制备化学纯的和稳定分散的金属和金属合金纳米颗粒胶体的方法。 一种方法包括以高重复率以超短激光脉冲辐射淹没在液体中的金属或金属合金靶,冷却包括辐射区域的液体的一部分,以及收集通过激光照射和液体冷却产生的纳米颗粒。 该方法可以用高重复率超快脉冲激光源,用于聚焦和移动脉冲激光束的光学系统,浸没在液体中的金属或金属合金靶和液体循环系统来实现,以冷却激光聚焦体积, 收集纳米颗粒产品。 通过控制各种激光参数,并具有可选的液流运动,该方法提供分散金属和金属合金纳米粒子的稳定胶体。 在各种实施方案中,不需要另外的稳定化学试剂。
    • 9. 发明授权
    • Positioning signal reception device and control method of positioning signal reception device
    • 定位信号接收装置及定位信号接收装置的控制方法
    • US07620132B2
    • 2009-11-17
    • US11295513
    • 2005-12-07
    • Makoto Murakami
    • Makoto Murakami
    • H04B1/10
    • H04B1/7097G01S19/21G01S19/30
    • A positioning signal reception device receives a positioning signal transmitted from a position information satellite, and includes: a signal reception portion that obtains a reception signal by receiving the positioning signal; an A/D conversion portion that generates a digital signal by converting the reception signal into a digital form; a filter portion that subjects the digital signal to frequency separation, a characteristic of the filter portion being changeable; a filter characteristic change portion that changes the characteristic of the filter portion according to an operating state of the positioning signal reception device and an external environmental condition of the positioning signal reception device; and a code synchronization establishment portion that establishes synchronization of spreading codes contained in the reception signal.
    • 定位信号接收装置接收从位置信息卫星发送的定位信号,包括:信号接收部,其通过接收定位信号来取得接收信号; A / D转换部分,通过将接收信号转换成数字形式产生数字信号; 使数字信号进行频率分离的滤波器部分,滤波器部分的特性是可变的; 滤波器特性变化部,其根据定位信号接收装置的动作状态和定位信号接收装置的外部环境状况改变滤波部的特性; 以及代码同步建立部,其建立包含在接收信号中的扩展码的同步。
    • 10. 发明申请
    • Method For Fabricating Thin Films
    • 薄膜制造方法
    • US20090246530A1
    • 2009-10-01
    • US12401967
    • 2009-03-11
    • Makoto MurakamiZhendong HuYong CheBing LiuYuzuru UeharaZhenlin Liu
    • Makoto MurakamiZhendong HuYong CheBing LiuYuzuru UeharaZhenlin Liu
    • B32B9/04C23C14/28C23C14/30B05B5/025
    • C23C14/08C23C14/083C23C14/086C23C14/14C23C14/28C23C14/54Y10T428/31504
    • A method of pulsed laser deposition (PLD) capable of continuously tuning formed-film morphology from that of a nanoparticle aggregate to a smooth thin film free of particles and droplets. The materials that can be synthesized using various embodiments of the invention include, but are not limited to, metals, alloys, metal oxides, and semiconductors. In various embodiments a ‘burst’ mode of ultrashort pulsed laser ablation and deposition is provided. Tuning of the film morphology is achieved by controlling the burst-mode parameters such as the number of pulses and the time-spacing between the pulses within each burst, the burst repetition rate, and the laser fluence. The system includes an ultrashort pulsed laser, an optical system for delivering a focused onto the target surface with an appropriate energy density, and a vacuum chamber in which the target and the substrate are installed and background gases and their pressures are appropriately adjusted.
    • 脉冲激光沉积(PLD)的方法,其能够将形成膜的形态从纳米颗粒聚集体的形态连续调节到没有颗粒和液滴的平滑薄膜。 可以使用本发明的各种实施方案合成的材料包括但不限于金属,合金,金属氧化物和半导体。 在各种实施例中,提供了超短脉冲激光烧蚀和沉积的“突发”模式。 通过控制脉冲串模式参数,例如脉冲数和每个脉冲之间的脉冲之间的时间间隔,脉冲串重复频率和激光能量密度来实现电影形态的调整。 该系统包括超短脉冲激光器,用于以适当的能量密度传递聚焦到目标表面上的光学系统,以及真空室,其中靶和基底被安装在其中,背景气体及其压力被适当地调整。