Title:
SYNCYRONIZATION TYPE SIGNAL DETECTING DEVICE
Document Type and Number:
Japanese Patent JP3441169
Kind Code:
B2
Abstract:
PURPOSE: To provide a synchronization type signal detecting device capable of measuring a high-speed phenomenon with good accuracy and capable of being miniaturized.
CONSTITUTION: The measured signal II is received by a conductive detector 310 applied with the modulation voltage signal of the prescribed frequency while the phase of the modulation signal is adjusted by a phase adjusting unit 110, and the DC constituent of the current signal generated by the conductive detector 310 in response to the intensity of the prescribed frequency constituent of the measured signal II with a current/voltage conversion section 320 as the voltage signal. The maximum value is identified within the DC voltage values Vo obtained each time the adjustment phase value is set when the phase of the modulation voltage signal is the same phase as the phase of the prescribed frequency constituent of the measured signal II, and the intensity of the prescribed frequency constituent of the measured signal II is calculated.
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Inventors:
Koishi Yui
Akira Takeshima
Mitsunori Nishizawa
Akira Takeshima
Mitsunori Nishizawa
Application Number:
JP15490394A
Publication Date:
August 25, 2003
Filing Date:
July 06, 1994
Export Citation:
Assignee:
Hamamatsu Photonics K.K.
International Classes:
G01R23/16; G01J1/44; G01J11/00; G01R23/14; G01R25/00; (IPC1-7): G01R23/16; G01J1/44; G01J11/00; G01R23/14; G01R25/00
Domestic Patent References:
| JP743404A | ||||
| JP7120327A | ||||
| JP821704A | ||||
| JP7261219A | ||||
| JP6313389A |
Attorney, Agent or Firm:
Yoshiki Hasegawa (3 outside)