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公开(公告)号：KR1019950003601B1
公开(公告)日：1995-04-14
申请号：KR1019910009481
申请日：1991-06-08
Applicant: 한국과학기술원
IPC: G01S3/80
Abstract: The method for performing the dynamic focusing within desired band includes the steps of: a) delayed sampling the analog signal provided from an arrayed converter continuously with an A/D converter; b) storing the converted digital sampling signal into a memory buffer in sequence; c) reading the stored sampling signal in sequence and converting them to the analog signal with a D/A converter; and d) adding and focusing the converted analog sampling signal with an adder.
Abstract translation: 用于在期望频带内执行动态聚焦的方法包括以下步骤：a）使用A / D转换器连续对从阵列转换器提供的模拟信号进行延迟采样; b）依次将转换的数字采样信号存储到存储器缓冲器中; c）顺序读取存储的采样信号，并用D / A转换器将其转换为模拟信号; 以及d）用加法器对转换的模拟采样信号进行加法和聚焦。
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Patent Agency Ranking
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公开(公告)号：KR1019920002693B1
公开(公告)日：1992-03-31
申请号：KR1019890015562
申请日：1989-10-28
Applicant: 한국과학기술원
IPC: H03B5/30
Abstract: The method improves the axial resolution of ultrasonic transducer using reverse exciting the transducer. The ultrasonic transducer is excited and then reversely excited having a delay (Td). A coil (L) is connected in parallel to a terminal of the ultrasonic transducer to obtaine a transducer terminal voltage and the terminal is shorted after a delay time using a switching device.
Abstract translation: 该方法使用反向激励传感器提高了超声波换能器的轴向分辨率。 超声波换能器被激发，然后反向激发具有延迟（Td）。 线圈（L）与超声波换能器的端子并联连接以获得换能器端子电压，并且在延迟时间之后使用开关装置使端子短路。
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公开(公告)号：KR1019940000856B1
公开(公告)日：1994-02-03
申请号：KR1019900012803
申请日：1990-08-20
Applicant: 한국과학기술원
IPC: A61B5/026
Abstract: The apparatus measures the blood flow velocity and the cortex in a human body by using a second or third self-regression model of supersonic pulse signal doppler phenomenon. The apparatus comprises a means receiving the supersonic doppler signals; a means computing parameters of the self-regression model from the received doppler signals; and a means computing the root from the computed parameters; a means computing an average frequency and a distribution of the supersonic doppler signals from the phase and the size of the computed root.
Abstract translation: 该装置通过使用超音速脉冲信号多普勒现象的第二或第三自回归模型来测量人体的血流速度和皮质。 该装置包括接收超音速多普勒信号的装置; 从接收的多普勒信号中计算自回归模型的参数的方法; 以及从计算出的参数计算根的方法; 从计算的根的相位和大小计算超音速多普勒信号的平均频率和分布的装置。
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