JPS56161781A - Dark current compensation system for solidstate image sensor - Google Patents

Dark current compensation system for solidstate image sensor

Info

Publication number
JPS56161781A
JPS56161781A JP6403680A JP6403680A JPS56161781A JP S56161781 A JPS56161781 A JP S56161781A JP 6403680 A JP6403680 A JP 6403680A JP 6403680 A JP6403680 A JP 6403680A JP S56161781 A JPS56161781 A JP S56161781A
Authority
JP
Japan
Prior art keywords
image sensor
dark current
temperature
stray diffusion
signal
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
JP6403680A
Other languages
Japanese (ja)
Inventor
Mitsuo Takano
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 JP6403680A priority Critical patent/JPS56161781A/en
Publication of JPS56161781A publication Critical patent/JPS56161781A/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)
  • Transforming Light Signals Into Electric Signals (AREA)

Abstract

PURPOSE:To eliminate the effect of a dark current from the signal outputted from a solidstate image sensor, by controlling the potential of a drain electrode of a stray diffusion amplifier, according to the temperature detected from a solidstate image sensor outputting the signal with a stray diffusion amplifying method. CONSTITUTION:In a device using a solidstate image sensor in which a stray diffusion amplifier is provided, transfer charges are fed to the gate of this amplifier and the corresponding output signal is picked up from the source, the ambient temperature of a CCD1 as the image sensor is detected at a detecting circuit 2 having a thermister 2A. Further, the pulse having a specified peak value according to the detected temperature at a control circuit 3 is fed to the drain of a stray diffusion amplifier during the blanking period in a television signal, and making the potential VCD during the period is decreased by the increment of dark current due to temperature rise. Thus, the effect of dark current from the signal outputted from the CCD1 is eliminated, thereby a necessity of temperature compensation as to the black level at the post stage circuit and of selection of elements with less dark current is eliminated.
JP6403680A 1980-05-16 1980-05-16 Dark current compensation system for solidstate image sensor Pending JPS56161781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6403680A JPS56161781A (en) 1980-05-16 1980-05-16 Dark current compensation system for solidstate image sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6403680A JPS56161781A (en) 1980-05-16 1980-05-16 Dark current compensation system for solidstate image sensor

Publications (1)

Publication Number Publication Date
JPS56161781A true JPS56161781A (en) 1981-12-12

Family

ID=13246482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6403680A Pending JPS56161781A (en) 1980-05-16 1980-05-16 Dark current compensation system for solidstate image sensor

Country Status (1)

Country Link
JP (1) JPS56161781A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0792066A2 (en) * 1996-02-26 1997-08-27 Canon Kabushiki Kaisha Photoelectric conversion apparatus and driving method thereof
EP0857983A2 (en) * 1997-01-14 1998-08-12 Canon Kabushiki Kaisha Radiographic apparatus
KR19990010997A (en) * 1997-07-21 1999-02-18 윤종용 Dark output compensation circuit and method by temperature of CCD
US9407843B2 (en) 2013-10-23 2016-08-02 General Electric Company Detector system and module for compensating dark current

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0792066A2 (en) * 1996-02-26 1997-08-27 Canon Kabushiki Kaisha Photoelectric conversion apparatus and driving method thereof
EP0792066A3 (en) * 1996-02-26 1998-09-16 Canon Kabushiki Kaisha Photoelectric conversion apparatus and driving method thereof
EP0857983A2 (en) * 1997-01-14 1998-08-12 Canon Kabushiki Kaisha Radiographic apparatus
EP0857983A3 (en) * 1997-01-14 1999-07-21 Canon Kabushiki Kaisha Radiographic apparatus
US6265720B1 (en) 1997-01-14 2001-07-24 Canon Kabushiki Kaisha Radiographic apparatus
KR19990010997A (en) * 1997-07-21 1999-02-18 윤종용 Dark output compensation circuit and method by temperature of CCD
US9407843B2 (en) 2013-10-23 2016-08-02 General Electric Company Detector system and module for compensating dark current

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