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1. 发明授权

US06738312B1 Arrangement and method for measuring the speed of sound 失效
标题翻译：声速测量方法
公开(公告)号：US06738312B1
公开(公告)日：2004-05-18
申请号：US10311170
申请日：2003-04-16
申请人： Kah Chye Tan , Zenton Goh , Kwok Chiang Ho
发明人： Kah Chye Tan , Zenton Goh , Kwok Chiang Ho
IPC分类号： G01H500
CPC分类号： G01H5/00 , Y10S367/902
摘要： The invention relates to an arrangement for measuring the speed of sound, the arrangement comprising: an electrical pulse generating means (402) for generating an output electrical pulse signal (404), a transmitting transducer (403) for converting said output electrical pulse signal (404) into an output acoustic pulse signal (405), a reflector (407) for reflecting said output acoustic pulse signal (405), thereby producing a reflected acoustic pulse signal (409), a receiving transducer (408) being arranged such as to receive said output acoustic pulse signal (405) transmitted directly from said transmitting transducer and said reflected acoustic pulse signal (409) reflected by said reflector, wherein said receiving transducer converts the received output acoustic pulse signal (405) into a reconstructed output electrical pulse signal (410) and the reflected acoustic pulse signal (409) into a reconstructed reflected electrical pulse signal (411), a speed determination means for determining the speed of sound (412) using the reconstructed output electrical pulse signal (410) and the reconstructed pulse signal (411).
摘要翻译：本发明涉及一种用于测量声速的装置，该装置包括：用于产生输出电脉冲信号（404）的电脉冲产生装置（402），用于将所述输出电脉冲信号（ 404）输出到输出声脉冲信号（405），用于反射所述输出声脉冲信号（405）的反射器（407），从而产生反射声脉冲信号（409），接收换能器（408）接收从所述发送换能器直接发送的所述输出声脉冲信号（405）和由所述反射器反射的所述反射声脉冲信号（409），其中所述接收转换器将所接收的输出声脉冲信号（405）转换成重建的输出电脉冲信号（410）和反射的声脉冲信号（409）转换成重建的反射电脉冲信号（411），速度确定装置，用于确定 g使用重建的输出电脉冲信号（410）和重构脉冲信号（411）的声速（412）。

2. 发明授权

US06724337B1 Method and device for analog digital converting a signal including a low-frequency component 失效
标题翻译：用于模拟数字转换包括低频分量的信号的方法和装置
公开(公告)号：US06724337B1
公开(公告)日：2004-04-20
申请号：US10089649
申请日：2002-07-02
申请人： Kah Chye Tan
发明人： Kah Chye Tan
IPC分类号： H03M112
CPC分类号： H03M1/129
摘要： A method is provided for analog/digital converting of at least one analog low-frequency signal with an analog/digital converter which can detect only an analog signal with a frequency above a predetermined border frequency value, wherein at least one analog low-frequency signal and at least one analog high-frequency signal are provided. An analog intermediate signal is generated from said analog low-frequency signal(s) and said analog high-frequency signal(s) and is input to the analog/digital converter. The analog intermediate signal is converted into a digital intermediate signal, and a digital low-frequency signal corresponding to said analog low-frequency signal is determined from the digital intermediate signal.
摘要翻译：提供一种用于模拟/数字转换至少一个模拟低频信号的方法，该模拟/数字转换器只能检测具有高于预定边界频率值的频率的模拟信号，其中至少一个模拟低频信号并提供至少一个模拟高频信号。从所述模拟低频信号和所述模拟高频信号产生模拟中间信号，并将其输入到模拟/数字转换器。模拟中间信号被转换为数字中间信号，并且根据数字中间信号确定对应于所述模拟低频信号的数字低频信号。

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