The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 1998
Filed:
May. 07, 1996
Medison Co., Ltd., Kangwon-do, KR;
Abstract
An ultrasonic color Doppler imaging system, and particularly a filtering method for removing a clutter signal from an ultrasonic image is provided. A modified infinite impulse response (IIR) filter to which a moving target indicator (MTI) principle is applied, can sufficiently suppress an undesired transient phenomenon shown in a conventional general IIR filter, and realize a steep characteristic curve which is the same as that of the conventional IIR filter, using a small order. Thus, a frame rate of the image system can be improved and a real-time processing is possible. However, first three signals output from such a filter do not represent a characteristic of a filter accurately. Thus, first three kinds of data which cause an inaccuracy to a filter characteristic are removed from a filter processing, to render an accuracy in realization of a modified IIR filter.
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