DELAY CIRCUIT, ELECTRONIC CIRCUIT USING DELAY CIRCUIT AND ULTRASONIC IMAGING DEVICE

Title:

DELAY CIRCUIT, ELECTRONIC CIRCUIT USING DELAY CIRCUIT AND ULTRASONIC IMAGING DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/155635

Kind Code:

A1

Abstract:

Provided are a delay circuit and an ultrasonic imaging device having highly accurate delay time, long maximum delay time, and low power consumption. The delay circuit comprises: an input line into which an analog input signal is input; a plurality of analog signal memory elements; an output line; a plurality of sampling switches for controlling connection and disconnection between the input line and the plurality of analog signal memory elements; a plurality of output switches for controlling connection and disconnection between the plurality of analog signal memory elements and the output line; and a clock generation unit for generating a sampling switch control signal for controlling the sampling switch, and an output switch control signal for controlling the output switch. The phase of the sampling switch control signal can be shifted relative to the phase of the output switch control signal.

Inventors:

NAKAGAWA TATSUO (JP)

Application Number:

PCT/JP2013/059412

Publication Date:

October 02, 2014

Filing Date:

March 28, 2013

Export Citation:

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Assignee:

HITACHI LTD (JP)

International Classes:

G11C27/00; A61B8/00; H03H11/26; H03H19/00

Domestic Patent References:

WO2003043190A1

2003-05-22

Foreign References:

JPS56129419A	1981-10-09
JPH04232888A	1992-08-21
JPS62179437A	1987-08-06
JPH057587A	1993-01-19
JPH07308319A	1995-11-28
JPH11260093A	1999-09-24
JPS62123819A	1987-06-05
JP2011250946A	2011-12-15

Other References: