Eclipse elimination by monitoring the pixel signal level

Details Eclipse elimination by monitoring the pixel signal level Eclipse elimination by monitoring the pixel signal level

2011-01-18

2011-01-18

Ho, Tuan (Department: 2622)

Television

Camera, system and detail

Solid-state image sensor

C348S294000, C348S308000, C250S208100

Reexamination Certificate

active

07872682

ABSTRACT:
An anti-eclipse circuit for an imaging sensor monitors the photo signal level output by a pixel to determine whether the photo signal corresponds to the pixel being operated at a saturated state. If so, there is a risk that the pixel may be susceptible to an eclipse distortion. When the pixel is detected as being operated in a saturated state, the anti-eclipse circuit pulls up the reset signal level previously stored in a sample and hold circuit to an appropriate voltage level in order to prevent an eclipse distortion from arising.

REFERENCES:
patent: 6803958 (2004-10-01), Wang
patent: 6873363 (2005-03-01), Barna et al.
patent: 7167200 (2007-01-01), Phan et al.
patent: 7170556 (2007-01-01), Kokubun et al.
patent: 7372492 (2008-05-01), Ahn
patent: 2003/0132786 (2003-07-01), Styduhar
patent: 2004/0036783 (2004-02-01), Barna
patent: 2005/0225653 (2005-10-01), Masuyama et al.
patent: 2004-38225 (2004-05-01), None
Korean Office Action dated Mar. 30, 2009, for corresponding Korean Patent Application No. 10-2007-7027101.

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