EP 2064868 A1 20090603 - CMOS LINEAR IMAGE SENSOR OPERATING BY CHARGE TRANSFER
Title (en)
CMOS LINEAR IMAGE SENSOR OPERATING BY CHARGE TRANSFER
Title (de)
DURCH LADUNGSTRANSFER ARBEITENDER CMOS-LINEARBILDSENSOR
Title (fr)
CAPTEUR D'IMAGE LINEAIRE CMOS A FONCTIONNEMENT DE TYPE TRANSFERT DE CHARGES
Publication
Application
Priority
- EP 2007058549 W 20070817
- FR 0608188 A 20060919
Abstract (en)
[origin: CA2663670A1] The invention relates to image sensors in the form of a signal-integratin g, moving multi-line linear array for the synchronized reading of the same l inear image in succession by N lines of P photo-sensitive pixels and the sum mation, pixel by pixel, of the signals read by the various lines. According to the invention, at the start of a photogenerated-charge integration time, the voltage is applied to the photodiode of the pixel of an intermediate lin e of rank i, this voltage being the output voltage of a pixel of a previous line of rank i-1, the photodiode is isolated, the charges due to the light a re integrated therein and, finally, at the end of integration time, the char ges on the photodiode are transferred to a storage node (N2) of the pixel. A charge-voltage conversion circuit (T4, T5) converts the charges on the stor age node into a pixel output voltage. Thus, before photogenerated charges ar e integrated in each pixel, the photodiode receives a charge equivalent to a n accumulation of charges coming from the previous pixel lines that observed the same line of the scene.
IPC 8 full level
H04N 5/335 (2011.01); H04N 5/374 (2011.01)
CPC (source: EP US)
H04N 3/155 (2023.08 - US); H04N 25/00 (2023.01 - US); H04N 25/583 (2023.01 - EP); H04N 25/768 (2023.01 - EP US); H04N 25/77 (2023.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
FR 2906081 A1 20080321; FR 2906081 B1 20081128; CA 2663670 A1 20080327; EP 2064868 A1 20090603; IL 197600 A0 20091224; JP 2010504009 A 20100204; US 2009268065 A1 20091029; WO 2008034677 A1 20080327
DOCDB simple family (application)
FR 0608188 A 20060919; CA 2663670 A 20070817; EP 07788469 A 20070817; EP 2007058549 W 20070817; IL 19760009 A 20090315; JP 2009527764 A 20070817; US 44068107 A 20070817