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US 2007/0164387 A1Published application
Imaging system for correcting dark level with high accuracy
AssigneeFUJIFILM Corporation
InventorYoshinori Furuta
Life of this patent
Estimating the term…
Abstract
A digital camera is provided that includes an image pick-up subsection whose CCD includes a shaded sub-pixel, and a signal processor that includes a dark processor and a sub-signal processor. The digital camera acquires a dark current in an effective pixel area and a leak signal or leak data during reading out signal charges to correct images.
Claims20
An image sensor comprising:
- a plurality of photosensitive devices that photoelectrically convert incident light from a field of view to signal charges, each of the photosensitive devices having a first photosensitive area defined as a main pixel and a second photosensitive area defined as a sub-pixel and smaller than the first photosensitive area;
- a color filter segment of a predetermined color that passes a predetermined wavelength range included in the incident light, and is provided correspondingly to said main pixel and said sub-pixel;
- and
- a column transfer path that selectively transfers, in a vertical direction, the signal charges generated by said main and sub-pixels and read into said column transfer path,
- said photosensitive devices including an effective area for being finally used to produce an image of the field of view, ones of said sub-pixels in the effective area being shaded to form shaded sub-pixels.
2 more elements
An imaging system comprising:
- an image sensor;
- and
- a signal processor that carries out signal processing on image data obtained by said image sensor,
- said image sensor comprising:
- a plurality of photosensitive devices that photoelectrically convert incident light from a field of view to signal charges, each of the photosensitive devices having a first photosensitive area defined as a main pixel and a second photosensitive area defined as a sub-pixel and smaller than the first photosensitive area;
- a color filter segment of a predetermined color that passes a predetermined wavelength range included in the incident light, and is provided correspondingly to said main pixel and said sub-pixel;
- and
- a column transfer path that selectively transfers, in a vertical direction, the signal charges generated by said main and sub-pixels and read into said column transfer,
- said photosensitive devices including an effective area for being finally used to produce an image of the field of view, ones of said sub-pixels in the effective area being shaded to form shaded sub-pixels.
6 more elements
Dependencies are inferred from the claim text.