H04N 25/627

Definition

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(Für diese Definition ist die deutsche Übersetzung noch nicht abgeschlossen)

Circuits for detection and reduction of inverted contrast or eclipsing.

Eclipsing can occur when at least some pixels of the CMOS imager are exposed to strong light such as direct illumination from the sun. The strong light may cause electrons to spill over from the photodiode into the floating diffusion region, which results in an erroneous reset signal to be sampled (e.g., reset signals sampled during reset operations may exhibit voltage levels that are less than the desired reset level). Consequently, the pixel signal computed by column readout circuitry becomes an undesirably small value, the effect of which is manifested when an over-illuminated pixel appears dark while it should be bright.

A typical anti-eclipse circuit is configured to correct the voltage level of the reset signal by pulling the reset level up to a corrected voltage, thereby minimising the eclipse effect.

Synonyme und Stichwörter

Synonyme

eclipse darkening blackening dark defect black crush black sun dark sun black inversion white-black inversion black dot black grave black core black point tanning phenomenon sunspot phenomenon solar blackening blackening phenomenon spotlight blackening high-brightness darkening black depression black sinking high-intensity blackening

H04N 25/627

Definition Statement

This place covers:

Circuits for detection and reduction of inverted contrast or eclipsing.

Eclipsing can occur when at least some pixels of the CMOS imager are exposed to strong light such as direct illumination from the sun. The strong light may cause electrons to spill over from the photodiode into the floating diffusion region, which results in an erroneous reset signal to be sampled (e.g., reset signals sampled during reset operations may exhibit voltage levels that are less than the desired reset level). Consequently, the pixel signal computed by column readout circuitry becomes an undesirably small value, the effect of which is manifested when an over-illuminated pixel appears dark while it should be bright.

A typical anti-eclipse circuit is configured to correct the voltage level of the reset signal by pulling the reset level up to a corrected voltage, thereby minimising the eclipse effect.

Synonyms and Keywords

Synonyms

eclipse darkening blackening dark defect black crush black sun dark sun black inversion white-black inversion black dot black grave black core black point tanning phenomenon sunspot phenomenon solar blackening blackening phenomenon spotlight blackening high-brightness darkening black depression black sinking high-intensity blackening