Canon patent: vergroten dynamisch bereik

[boels069]

Met behulp van een "overloop-emmertje" per pixel.

An object of the invention is to cause a part of charge spilling from a photoelectric conversion unit to flow into a charge holding unit and thereby extend dynamic range and at the same time improve image quality.
There is provided a solidstate image pickup device having a pixel including: a photoelectric conversion unit generating and accumulating charge by means of photoelectric conversion; a first charge holding unit being shielded from light, and being adaptable to accumulate a part of charge spilling from the photoelectric conversion unit in a period during which the photoelectric conversion unit generates and accumulates charge; an amplifying unit (SF-MOS) amplifYing charge; a first transfer unit (TxMOS) transferring the charge accumulated in the photoelectric conversion unit to the amplifying unit; and a second transfer unit (Ty-MOS) transferring the charge accumulated in the first charge holding unit to the amplifYing unit.

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