Solid-state imaging apparatus

Details Solid-state imaging apparatus Solid-state imaging apparatus

H - Electricity

04

N

375/40, 350/48,

H04N 3/12 (2006.01) H04N 5/217 (2006.01) H04N 5/38 (2006.01)

Patent

CA 1164117

- 1 - Abstract: This invention relates to a solid-state imaging apparatus wherein photo signals are read out through MOS type FETs from photosensors, such as photodiodes, arrayed in two dimensions in large numbers. The invention improves the signal-to-noise ratio of the output signal by reducing or eliminating noise components mixed in the photo signal. Analysis of the noise components has revealed a correlation in which a noise component of a certain polarity develops again with the opposite polarity after a period that is shorter than one horizontal scanning period by the duration of one horizontal scanning pulse. To take advantage of this correlation, the apparatus provides a processing circuit that includes a delay circuit and an adder circuit to act together to cancel the noise.

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