Title:
SIGNAL DETECTION SYSTEM AND SIGNAL DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2015/189920
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a weak signal detection system for enhancing the signal detection accuracy for a detection signal or analog signal having a plurality of voltages or current levels. Provided is a signal detection system characterized by being provided with first and second non-linear response units that each respond non-linearly to the voltage or current value of an input signal and output a binarized one-bit discrete signal and an offset superimposition signal in which an offset corresponding to the one-bit discrete signal is superimposed on a detection signal, a discrete signal acquisition unit for synchronizing and acquiring the one-bit discrete signals output by the first and second non-linear response units, and a signal processing unit for converting the one-bit discrete signals synchronized and acquired by the discrete signal acquisition unit into digital data or image data, and characterized in that the input signal for the first non-linear response unit is the detection signal and the input signal for the second non-linear response unit is the offset superimposition signal output by another non-linear response unit.
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Inventors:
KANAI HISAAKI (JP)
LI WEN (JP)
MAKUUCHI MASAMI (JP)
LI WEN (JP)
MAKUUCHI MASAMI (JP)
Application Number:
PCT/JP2014/065402
Publication Date:
December 17, 2015
Filing Date:
June 11, 2014
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G01R29/26
Domestic Patent References:
| WO2013121831A1 | 2013-08-22 |
Foreign References:
| JP2012175371A | 2012-09-10 |
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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