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    • 5. 发明公开
    • Digital beamforming apparatus with a sigma-delta A/D converter
    • Digitale Strahlformungsvorrichtung mit einem Sigma-Delta-A / D-Wandler
    • EP1840564A3
    • 2013-12-04
    • EP07005992.8
    • 2007-03-23
    • MEDISON CO., LTD.
    • Bae, Moo HoKim, Chang SunKim, Yung Gil
    • G01N29/07G01N29/38G01N29/44
    • G01N29/38G01N29/07G01N29/44G01N2291/011G01N2291/044G01S7/52025G01S7/52034G01S15/8915G10K11/341
    • Embodiments of the present invention may provide a digital beamforming apparatus in an ultrasound system having an array transducer, the apparatus comprising: a variable sampling clock generating unit to variably generate sampling clock signals based on reception delay times in ultrasound echo signals arriving at each element of the transducer elements of the array transducer, the variable sampling clock generating unit further being configured to output control signals corresponding to cycles of the sampling clock signals; sigma-delta analog-to-digital (A/D) converters connected to the respective transducer elements of the array transducer and being configured to convert analog signals outputted from the elements of the array transducer into digital signals in response to the sampling clock signals and the control signals; delay units to delay output signals of the sigma-delta A/D converters based on the reception delay time; and an adder for adding the delayed signals.
    • 本发明的实施例可以提供一种具有阵列换能器的超声系统中的数字波束成形装置,该装置包括:可变采样时钟产生单元,用于根据到达每个元件的超声回波信号中的接收延迟时间可变地产生采样时钟信号 阵列换能器的换能器元件,可变采样时钟发生单元还被配置为输出对应于采样时钟信号的周期的控制信号; 连接到阵列换能器的相应换能器元件的Σ-Δ模拟数字(A / D)转换器,并被配置为响应于采样时钟信号将从阵列换能器的元件输出的模拟信号转换为数字信号, 控制信号; 延迟单元,用于基于接收延迟时间来延迟Σ-ΔA/ D转换器的输出信号; 以及用于相加延迟信号的加法器。