Title:
【発明の名称】多素子センサの校正装置
Document Type and Number:
Japanese Patent JP3000979
Kind Code:
B2
Abstract:
In a multi-element sensor calibration apparatus, an image signal derived from a multi-element sensor installed in a facsimile or a satellite is periodically calibrated based upon a zero level signal and a calibration signal having more than two uniform levels. The multi-element sensor calibration apparatus is arranged by employing a light reception unit for receiving incident light to convert the received incident light into an electric signal; a calibration signal output unit for outputting a calibration signal used to calibrate the electric signal; a transfer unit for transferring the electric signal and the calibration signal; a gate for executing a gating operation of the electric signal in such a manner that when the gate is set to an ON state, the electric signal derived from the light reception unit is outputted to the transfer unit whereas when the gate is set to an OFF state, outputting of the electric signal to the transfer unit is interrupted; and a calibration signal output control unit for performing output control of the calibration signal in such a way that when the gate means is set to an ON state, the calibration signal is not outputted to the transfer unit, whereas when the gate is set to an OFF state, the calibration signal is outputted to the transfer unit. As a result, the image signal of the multi-element sensor can be calibrated irrespective of the electrical differences in the solid-state characteristics of the electronic components.
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Inventors:
Hisashi Harada
Application Number:
JP30887197A
Publication Date:
January 17, 2000
Filing Date:
November 11, 1997
Export Citation:
Assignee:
NEC
International Classes:
H04N1/028; H01J40/14; H04N1/401; (IPC1-7): H04N1/028
Attorney, Agent or Firm:
Nobuo Takahashi (3 outside)