Image pickup apparatus and flicker detection method therefor

Details Image pickup apparatus and flicker detection method therefor Image pickup apparatus and flicker detection method therefor

2008-10-09

2011-12-20

Henn, Timothy J (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S302000, C348S324000, C348S230100

Reexamination Certificate

active

08081235

ABSTRACT:
An image pickup apparatus capable of accurately detecting a flicker in a short time period without regard to a state of object and a photography scene. A signal processing circuit reads out an n-th line of an image subjected to collective reset/collective transfer readout, reads out an n-th line of an image subjected to rolling readout, and subtracts an output of a pixel section of a particular column of the n-th line of the image subjected to the rolling readout from an output of a corresponding pixel section of the image subjected to the collective reset/collective transfer readout. The signal processing circuit determines that a flicker is generated, if there is a differential value not less than a predetermined threshold value between each pair of outputs from the pixel sections of the same line and if there is a periodicity in an image vertical direction.

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patent: 3476400 (2001-04-01), None
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