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:
Aug. 16, 2016
Filed:
Apr. 22, 2014
Applicant:
Hitachi Aloka Medical, Ltd., Mitaka-shi, Tokyo, JP;
Inventors:
Assignee:
HITACHI ALOKA MEDICAL, LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/00 (2006.01); G01T 1/00 (2006.01); G01T 1/17 (2006.01); G01T 1/36 (2006.01); G01T 1/161 (2006.01); G01T 1/164 (2006.01);
U.S. Cl.
CPC ...
G01T 1/17 (2013.01); G01T 1/00 (2013.01); G01T 1/161 (2013.01); G01T 1/164 (2013.01); G01T 1/36 (2013.01);
Abstract
Preprocessing is conducted on a unipolar pulse output from a photomultiplier tube, to thereby generate a bipolar signal (bipolar pulse). In the bipolar signal, the falling waveform portion (back slope) of the initial peak waveform is steep, and also cuts across the baseline, whereby it is possible to accurately identify the falling point as the zero crossing point. The accuracy of identification of the pulse width 't' can be improved thereby. In addition to the pulse width, further reference may be made to the crest value of the unipolar pulse, the crest value of the bipolar signal, and the like, when determining line type.