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    • 4. 发明授权
    • Acoustic cooling system with noise reduction function
    • 声降温系统具有降噪功能
    • US06625285B1
    • 2003-09-23
    • US09047404
    • 1998-03-25
    • Tadashi Ohashi
    • Tadashi Ohashi
    • G10K1116
    • G10K11/178G10K2210/104
    • The invention provides an acoustic cooling system with a noise reduction function of the type wherein a driving condition of a sound source used in the acoustic cooling system is controlled to compress coolant by a sound wave and a cooling object is cooled making use of an endothermic action of the coolant when the compressed coolant is expanded and which can reduce noise produced from the sound source effectively. To this end, the acoustic cooling system forwards cancellation sound having a characteristic capable of offsetting or cancelling the noise originating from the sound source and includes a cancellation signal production element for producing, in accordance with a driving control signal produced by a sound source control element, a cancellation signal having a characteristic capable of cancelling the noise produced as the sound source is driven, a cancellation signal level adjustment element for adjusting the signal level of the cancellation signal in accordance with the driving control signal, and a cancellation sound outputting element for converting the cancellation signal having the adjusted signal level into a sound wave and outputting the sound wave as the cancellation sound for the noise.
    • 本发明提供了一种具有降噪功能的声学冷却系统,其中在声音冷却系统中使用的声源的驱动条件被控制以通过声波压缩冷却剂,并且使用吸热作用来冷却冷却对象 当压缩冷却剂膨胀并且可以有效地降低由声源产生的噪音时,冷却剂的流动。 为此,声学冷却系统转发具有能够抵消或消除源自声源的噪声的特征的取消声音,并且包括消除信号产生元件,用于根据由声源控制元件产生的驱动控制信号 具有能够消除作为声源产生的噪声的特性的消除信号,根据驱动控制信号调整抵消信号的信号电平的消除信号电平调整元件,以及用于 将具有调整的信号电平的消除信号转换为声波,并输出声波作为噪声的消除声音。
    • 6. 发明授权
    • Information collecting apparatus
    • 信息采集装置
    • US06408297B1
    • 2002-06-18
    • US09349117
    • 1999-07-08
    • Tadashi Ohashi
    • Tadashi Ohashi
    • G06F1730
    • G06F17/30864Y10S707/99945
    • A client terminal in the information collecting apparatus collects a Web information described in hyper text language form a Web server terminal via the Internet. This client terminal starts up a browser and previously sets a flag at a target data cell in the collected Web information. The client terminal first automatically collects the latest Web information when the time in the timer reaches a prespecified time by utilizing a program for data transfer without starting up the browser, and then collects a latest data cell corresponding to the data cell for which a flag has been set.
    • 信息收集装置中的客户终端通过因特网从Web服务器终端收集以超文本语言描述的Web信息。 该客户终端启动浏览器,并且先前在所收集的Web信息中的目标数据单元上设置标志。 当定时器中的时间达到预定时间时,客户端首先自动收集最新的Web信息,通过利用用于数据传输的程序而不启动浏览器,然后收集与标志具有的数据单元相对应的最新数据单元 已设定
    • 8. 发明授权
    • Coefficient updating method for an adaptive filter
    • 自适应滤波器的系数更新方法
    • US5668747A
    • 1997-09-16
    • US377726
    • 1995-01-25
    • Tadashi Ohashi
    • Tadashi Ohashi
    • G10K11/178G06F17/10
    • G06F17/10G10K11/1784G10K2210/3016G10K2210/3053G10K2210/503
    • A coefficient updating method stops updating filter coefficients for a plurality of adaptive filters when a convergence condition is achieved. Active noise control within a system simulates an original noise signal with a simulated noise signal which is equal and opposite to the original noise signal. To detect feedback in such a system, a reference signal or "white noise" is generated by a speaker, transmitted through the system and received by a microphone. Coefficients of multiple filters such as an anti-feedback filter, a C filter, and a noise control filter are then updated to minimize adverse parameters such as original noise and feedback. Coefficient updating of the adaptive filters is stopped when a minimum average value is reached.
    • 当实现收敛条件时,系数更新方法停止更新多个自适应滤波器的滤波器系数。 系统内的主动噪声控制利用与原始噪声信号相等和相反的模拟噪声信号来模拟原始噪声信号。 为了检测这种系统中的反馈,通过扬声器产生参考信号或“白噪声”,通过系统发送并由麦克风接收。 然后更新诸如反馈滤波器,C滤波器和噪声控制滤波器的多个滤波器的系数以最小化诸如原始噪声和反馈的不利参数。 当达到最小平均值时,停止自适应滤波器的系数更新。