Imaging apparatus and control method thereof
AssigneeCanon Kabushiki Kaisha
InventorNobuhiro Takeda
Life of this patent
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Abstract
An image sensor includes a plurality of photoelectric conversion units disposed in line and column directions, transfer capacitances that store a signal read out from the (n−1)th line (n being an integer of 2 or more) of the plurality of photoelectric conversion units, transfer capacitances that store a signal read out from the nth line of the plurality of photoelectric conversion units, and a system control CPU that controls the image sensor. While a level of a predetermined driving pulse generated within the image sensor changes during the period where the signal of the (n−1)th line stored in the transfer capacitance is read out from the transfer capacitances, the system control CPU control not to output the signal of the (n−1)th line from the transfer capacitances.
Claims5
An imaging apparatus comprising:
- an image sensor that includes a plurality of pixels, disposed in line and column directions, each having a photoelectric conversion unit, a first storage unit configured to store a signal read out from pixels in the (n−1)th line (n being an integer of 2 or more) of the plurality of pixels, and a second storage unit configured to store a signal read out from pixels in the nth line of the plurality of pixels;
- and
- a control unit configured to control to read out the signal of the pixels in the nth line to the second storage unit while in parallel reading out from the first storage unit and outputting the signal of the pixels in the (n−1)th line, and temporally stop the in parallel outputting the signal of the pixels in the (n−1)th line from the first storage unit when driving pulses for reading out the signal from the pixels in the nth line to the second storage unit change,
- wherein the signal read out from the pixels includes a signal component, generated by photoelectric conversion by the photoelectric conversion unit, and a noise component, and the driving pulses include a first driving pulse for reading out the noise component and a second pulse for reading out a sum of the noise component and the signal component.
Dependencies are inferred from the claim text.