JPS55160478A - Photoelectric converter - Google Patents

Photoelectric converter

Info

Publication number
JPS55160478A
JPS55160478A JP6747479A JP6747479A JPS55160478A JP S55160478 A JPS55160478 A JP S55160478A JP 6747479 A JP6747479 A JP 6747479A JP 6747479 A JP6747479 A JP 6747479A JP S55160478 A JPS55160478 A JP S55160478A
Authority
JP
Japan
Prior art keywords
signal
light source
light
dark current
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6747479A
Other languages
Japanese (ja)
Inventor
Masafumi Yokota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6747479A priority Critical patent/JPS55160478A/en
Publication of JPS55160478A publication Critical patent/JPS55160478A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Solid State Image Pick-Up Elements (AREA)

Abstract

PURPOSE:To remove noise occurred in the photoelectric converter and a dark current also occurred therein by differentiating the output from a line sensor at non- lighting time and the output from a line sensor at lighting time. CONSTITUTION:When a light source 6 irradiates a pulse light, a real image is formed on a line sensor with the reflected light 10 on an article 1 to be read. A sensor 12 stores the charge meeting the pattern received via the light. When the pulse light is erased from the light source 6, the charge stored on the sensor 12 is emitted. The signal thus emitted is amplified via a signal amplifier 13. This signal consists of a photoconverting signal and dark current. The output signal when the light source 6 is not energized is only the dark current. Accordingly, the signal at this time is sampled to hold it in a sample holding circuit 14. Thus, the signal component retained at the circuit 14 from the signal at the time of lighting at the light source is differentiated by a differential amplifier 15 to retain only the photoelectric conversion signal so as to obtain a pattern signal containing less noise.
JP6747479A 1979-06-01 1979-06-01 Photoelectric converter Pending JPS55160478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6747479A JPS55160478A (en) 1979-06-01 1979-06-01 Photoelectric converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6747479A JPS55160478A (en) 1979-06-01 1979-06-01 Photoelectric converter

Publications (1)

Publication Number Publication Date
JPS55160478A true JPS55160478A (en) 1980-12-13

Family

ID=13345987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6747479A Pending JPS55160478A (en) 1979-06-01 1979-06-01 Photoelectric converter

Country Status (1)

Country Link
JP (1) JPS55160478A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6129170A (en) * 1984-07-19 1986-02-10 Canon Inc Photosensor and manufacture thereof
JPS6139572A (en) * 1984-07-31 1986-02-25 Canon Inc Image reading device
JPS6139570A (en) * 1984-07-31 1986-02-25 Canon Inc Continuous-length image sensor unit
JPS6139571A (en) * 1984-07-31 1986-02-25 Canon Inc Image reading device
JPS6140055A (en) * 1984-08-01 1986-02-26 Canon Inc Color photo sensor
JPS6185859A (en) * 1984-10-04 1986-05-01 Canon Inc Photosensor and manufacture thereof
JPS6187365A (en) * 1984-10-05 1986-05-02 Canon Inc Reader for picture
JPS6188559A (en) * 1984-10-08 1986-05-06 Canon Inc Image reader
JPS6189659A (en) * 1984-10-09 1986-05-07 Canon Inc Color photosensor
JPS6190458A (en) * 1984-10-11 1986-05-08 Canon Inc Continuous image sensor unit
US5912463A (en) * 1996-08-19 1999-06-15 Hamamatsu Photonics K.K. Photodetector and solid-state imaging apparatus
JP2010053655A (en) * 2008-08-29 2010-03-11 Ｙｋｋ Ａｐ株式会社 Fittings
WO2015124532A1 (en) * 2014-02-18 2015-08-27 Eyesense Ag Method and apparatus for extracting a desired signal from a combined signal

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6129170A (en) * 1984-07-19 1986-02-10 Canon Inc Photosensor and manufacture thereof
JPS6139572A (en) * 1984-07-31 1986-02-25 Canon Inc Image reading device
JPS6139570A (en) * 1984-07-31 1986-02-25 Canon Inc Continuous-length image sensor unit
JPS6139571A (en) * 1984-07-31 1986-02-25 Canon Inc Image reading device
JPS6140055A (en) * 1984-08-01 1986-02-26 Canon Inc Color photo sensor
JPH0462467B2 (en) * 1984-10-04 1992-10-06 Canon Kk
JPS6185859A (en) * 1984-10-04 1986-05-01 Canon Inc Photosensor and manufacture thereof
JPS6187365A (en) * 1984-10-05 1986-05-02 Canon Inc Reader for picture
JPH0462468B2 (en) * 1984-10-05 1992-10-06 Canon Kk
JPS6188559A (en) * 1984-10-08 1986-05-06 Canon Inc Image reader
JPH0462469B2 (en) * 1984-10-08 1992-10-06 Canon Kk
JPS6189659A (en) * 1984-10-09 1986-05-07 Canon Inc Color photosensor
JPH0462470B2 (en) * 1984-10-09 1992-10-06 Canon Kk
JPS6190458A (en) * 1984-10-11 1986-05-08 Canon Inc Continuous image sensor unit
JPH0462471B2 (en) * 1984-10-11 1992-10-06 Canon Kk
US5912463A (en) * 1996-08-19 1999-06-15 Hamamatsu Photonics K.K. Photodetector and solid-state imaging apparatus
JP2010053655A (en) * 2008-08-29 2010-03-11 Ｙｋｋ Ａｐ株式会社 Fittings
WO2015124532A1 (en) * 2014-02-18 2015-08-27 Eyesense Ag Method and apparatus for extracting a desired signal from a combined signal

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