JPS55163959A - Solid-state pickup unit - Google Patents

Solid-state pickup unit

Info

Publication number
JPS55163959A
JPS55163959A JP7202679A JP7202679A JPS55163959A JP S55163959 A JPS55163959 A JP S55163959A JP 7202679 A JP7202679 A JP 7202679A JP 7202679 A JP7202679 A JP 7202679A JP S55163959 A JPS55163959 A JP S55163959A
Authority
JP
Japan
Prior art keywords
signal
correction signal
black
level
correction
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.)
Granted
Application number
JP7202679A
Other languages
Japanese (ja)
Other versions
JPS6033343B2 (en
Inventor
Yoshikuni Tanaka
Masanobu Morishita
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP54072026A priority Critical patent/JPS6033343B2/en
Publication of JPS55163959A publication Critical patent/JPS55163959A/en
Publication of JPS6033343B2 publication Critical patent/JPS6033343B2/en
Expired 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 remove phenomena such as a flicker of a screen, black sinkage and white float by stabilizing the black level of a picture by adding a correction signal to a video signal obtained from a photo detecting element in a solid-state pickup unit using a CCD pickup element. CONSTITUTION:Correction signal 35 from driving circuit 34 is added to video signal 27 by mixing circuit 36. Correction signal 35 includes correction signal 37 for a part where vertical transfer within a vertical blanking interval is not performed and correction signal 38 for noises of transfer gate pulses. Correction signal 35 corrects a difference in level between a signal giving optical black and the output of a horizontal transfer part due to a dark current, and correction signal 38 similarly corrects a difference in level between the above-mentioned signal providing black and signal 30 due to noises of transfer gate pulses. Video signal 39, after this correction signal signal 35 is applied to uniform signal levels in the vertical blanking interval never varies in blank level even when clamped by clamping circuit 16.
JP54072026A 1979-06-08 1979-06-08 solid-state imaging device Expired JPS6033343B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54072026A JPS6033343B2 (en) 1979-06-08 1979-06-08 solid-state imaging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54072026A JPS6033343B2 (en) 1979-06-08 1979-06-08 solid-state imaging device

Publications (2)

Publication Number Publication Date
JPS55163959A true JPS55163959A (en) 1980-12-20
JPS6033343B2 JPS6033343B2 (en) 1985-08-02

Family

ID=13477480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54072026A Expired JPS6033343B2 (en) 1979-06-08 1979-06-08 solid-state imaging device

Country Status (1)

Country Link
JP (1) JPS6033343B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281349A2 (en) * 1987-03-04 1988-09-07 Sony Corporation Clamp circuits for solid-state imaging devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0281349A2 (en) * 1987-03-04 1988-09-07 Sony Corporation Clamp circuits for solid-state imaging devices

Also Published As

Publication number Publication date
JPS6033343B2 (en) 1985-08-02

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