Imaging device
AssigneeJVCKENWOOD Corporation
InventorHiroshi Yoshikawa
Life of this patent
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Abstract
An imaging device includes pixel units, a control unit, and a correction unit. The control unit causes each pixel unit to output first and second signal. The first signal is a potential of a floating diffusion held when the charge accumulated in a photoelectric conversion unit is transferred upon a transfer switch being closed. The second signal is a potential of the floating diffusion held when a reset switch is closed with the transfer switch being open. The correction unit generates, with respect to the first and second signals output by each pixel unit, the pixel signal by subtracting a correction amount from a signal intensity of the first signal. The correction amount is a product of a signal intensity of the second signal and a coefficient determined in advance in accordance with a position of each pixel unit.
Claims6
An imaging device comprising:
- a plurality of pixel units;
- a control unit configured to control a signal output by each of the plurality of pixel units;
- and
- a correction unit configured to correct the signal output by each of the plurality of pixel units to generate a pixel signal, wherein
- each of the plurality of pixel units includes
- a photoelectric conversion unit,
- a transfer switch configured to transfer a charge generated in the photoelectric conversion unit to a floating diffusion, and
- a reset switch configured to discharge the charge accumulated in the floating diffusion,
- the control unit is configured to cause each of the plurality of pixel units to output a first signal and a second signal, the first signal being a potential of the floating diffusion held when the charge accumulated in the photoelectric conversion unit is transferred upon the transfer switch being closed, the second signal being a potential of the floating diffusion held when the reset switch is closed with the transfer switch being open, and
- the correction unit is configured to generate, with respect to the first signal and the second signal output by each of the plurality of pixel units, the pixel signal by subtracting a correction amount from a signal intensity of the first signal, the correction amount being a product of a signal intensity of the second signal and a coefficient determined in advance in accordance with a position of each of the plurality of pixel units.
Dependencies are inferred from the claim text.