Title:
【発明の名称】受信ビーム生成器システムのための方法とシステム
Document Type and Number:
Japanese Patent JP2002515115
Kind Code:
A
Abstract:
The present invention includes a fully programmable plurality of multi-channel receivers, each receiver having a digital multi-channel receive processor and a local processor control. Each receive processor includes a first decimator, time delay memory, second decimator, and complex multiplier. The receive beamformer is a computationally efficient system which is programmable to allow processing mode trade-offs among receive frequency, receive spatial range resolution, and number of simultaneous beams received. Each local control receives focusing data from a central control computer and provides final calculation of per-channel dynamic focus delay, phase, apodization, and calibration values for each receiver signal sample. Further, this invention includes a baseband multi-beam processor which has a phase aligner and a baseband filter for making post-beamformation coherent phase adjustments and signal shaping, respectively. The phase aligner maintains scan-line-to-scan-line coherency, such as would be required for coherent image formation. Accordingly, the present system can operate under multiple imaging formats, using a variety of transducers and a variety of modes such as B-mode, M-mode, and color Doppler flow mode.
Inventors:
Wright, Jay., Nelson
Cole, Christopher, Earl.
Gee, Albert
Cole, Christopher, Earl.
Gee, Albert
Application Number:
JP50678296A
Publication Date:
May 21, 2002
Filing Date:
August 04, 1995
Export Citation:
Assignee:
Accuson Corporation
International Classes:
A61B8/00; G01S3/80; G01S7/52; G01S7/523; G01S15/89; G10K11/34; G01S13/89; (IPC1-7): G01S7/523; A61B8/00; G01S3/80; G01S15/89
Attorney, Agent or Firm:
Yasuo Ishikawa