Title:
パルス検出回路、放射線検出回路、及び放射線検出装置
Document Type and Number:
Japanese Patent JP6523793
Kind Code:
B2
Abstract:
A pulse detection circuit according to an embodiment includes a conversion circuit, a delay circuit, first and second comparators, a latch, and a generation circuit. The conversion circuit converts an input signal into a thermometer code signal. The delay circuit outputs a delay signal being the thermometer code signal delayed by a predetermined delay time. The first comparator (The second comparator) compares the thermometer code signal with the delay signal and outputs an increase signal (a decrease signal) indicating whether the input signal is larger (smaller) than the input signal before the delay time. Based on the increase signal and the decrease signal, the latch outputs an increase-decrease signal indicating whether the input signal is increasing or decreasing. Based on the thermometer code signal and the increase-decrease signal, the generation circuit generates a pulse detection signal and a pileup detection signal.
Inventors:
Hirokatsu Shirahama
Tetsuro Itakura
Masanori Furuta
Shunsuke Kimura
Takeshi Kawada
Hideyuki Funaki
Tetsuro Itakura
Masanori Furuta
Shunsuke Kimura
Takeshi Kawada
Hideyuki Funaki
Application Number:
JP2015111430A
Publication Date:
June 05, 2019
Filing Date:
June 01, 2015
Export Citation:
Assignee:
Canon Medical Systems Corporation
International Classes:
H03K5/19; G01J1/42; G01J5/10; G01T1/17; H03K5/08; H03K5/26; H03M1/36
Domestic Patent References:
| JP2001337119A | ||||
| JP2009229127A | ||||
| JP2001503526A | ||||
| JP2006101926A |
Attorney, Agent or Firm:
Takeshi Sekine
Suzuki Junsei
Nobuto Ishihara
Yasushi Kawasaki
Suzuki Junsei
Nobuto Ishihara
Yasushi Kawasaki