公开(公告)号：KR1020130090219A

公开(公告)日：2013-08-13

申请号：KR1020120011371

申请日：2012-02-03

Applicant: 서강대학교산학협력단

Inventor： 송태경 ,  유양모 ,  장진호 ,  이우열 ,  김용현

IPC: A61B8/14 ,  G01N29/24 ,  G06T5/00 ,  H04N5/21

Abstract: PURPOSE: A direct pixel beamforming apparatus with phase rotation is provided to reduce the amount of calculation and hardware complexity by not requiring additional receiving beamforming to obtain one pixel point as having the same picture quality as the prior direct pixel beamforming method. CONSTITUTION: A receiving beamformer includes a mixer (321), a low pass filter (322), a buffer part (324), a delay calculation part (325), a phase rotation part (326) and a combiner part (327). The mixer receives channel data and generates an in-phase component and a quadrature component. The low pass filter extracts a base band signal of the in-phase component and the quadrature component. The buffer part stores the base band signal of the in-phase component and the quadrature component. The delay calculation part calculates coarse delay and fine delay which are to be applied to the base band signal of the in-phase component and the quadrature component, and delivers the coarse delay to the buffer part, and delivers the fine delay to the phase rotation part. The phase rotation part applies the fine delay to the in-phase component and the quadrature component which are applied with the coarse delay. The combiner part combines the in-phase component and the quadrature component in which delay is applied per channel. The fine delay is obtained by converting fine delay time into the type of phase. [Reference numerals] (320) Receiving beamformer; (321) Mixer; (324) Buffer part; (325) Delay calculation part; (327) Combiner part; (330) Envelope detection part; (340) Log compression part; (350) Display part

Abstract translation: 目的：提供具有相位旋转的直接像素波束形成装置，以通过不需要额外的接收波束形成来获得一个像素点以具有与先前的直接像素波束形成方法相同的图像质量来减少计算量和硬件复杂度。 构成：接收波束形成器包括混频器（321），低通滤波器（322），缓冲器部分（324），延迟计算部分（325），相位旋转部分（326）和组合器部分（327）。 混频器接收信道数据并产生同相分量和正交分量。 低通滤波器提取同相分量和正交分量的基带信号。 缓冲器部分存储同相分量和正交分量的基带信号。 延迟计算部分计算要施加到同相分量和正交分量的基带信号的粗延迟和精细延迟，并将粗延迟递送到缓冲器部分，并将精细延迟递送到相位旋转 部分。 相位旋转部分将精细延迟施加到以粗延迟施加的同相分量和正交分量。 组合器部分组合同步分量和正交分量，其中每通道应用延迟。 通过将精细延迟时间转换为相位类型来获得精细延迟。 （附图标记）（320）接收波束形成器; （321）搅拌机; （324）缓冲部分; （325）延迟计算部分; （327）组合部分; （330）信封检测部; （340）日志压缩部分; （350）显示部分