METHOD AND DEVICE FOR MULTICHANNEL DIGITAL RECEPTION AND ULTRASONIC DIAGNOSTIC DEVICE

Title:

METHOD AND DEVICE FOR MULTICHANNEL DIGITAL RECEPTION AND ULTRASONIC DIAGNOSTIC DEVICE

Document Type and Number:

WIPO Patent Application WO/1995/031135

Kind Code:

A1

Abstract:

Phased signals of multiple channels are added without sampling clocks of multiple phases, and the limit to the frequency of a reference wave is reduced even at a constant sampling rate. The multichannel digital receiving device comprises a probe (2) which receives ultrasonic echo signals and outputs analog reception signals through multiple channels, A/D converters (31-3x), delay circuits (41-4x) which are respectively provided for the channels and delay digital data by prescribed delay time, digital quadrature detecting circuits (61-6x) which perform digital quadrature detection of delayed digital data and extract channel in-phase components and channel quadrature components, an adder circuit (71) which adds the channel in-phase components and outputs a synthesized in-phase component, and another adder circuit (7Q) which adds the channel quadrature components and outputs a synthesized quadrature component (7Q).

Inventors:

SUZUKI YOICHI (JP)

Application Number:

PCT/JP1995/000914

Publication Date:

November 23, 1995

Filing Date:

May 11, 1995

Export Citation:

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Assignee:

YOKOGAWA MEDICAL SYST (JP)
SUZUKI YOICHI (JP)

International Classes:

A61B8/00; G01S7/52; H04J11/00; (IPC1-7): A61B8/00

Foreign References:

JPH0622958A	1994-02-01
JPH05184568A	1993-07-27
JPH06244890A	1994-09-02
JPS6080444A	1985-05-08
JPH04290337A	1992-10-14

Other References: