Imaging element, imaging device, and control method
AssigneeCanon Kabushiki Kaisha
InventorHiroshi Kondo
Life of this patent
Estimating the term…
Abstract
An imaging element which outputs an image signal acquired by an imaging unit having a plurality of pixel portions is provided. The imaging element receives a target luminance value from an imaging device and executes exposure control in the imaging element on the basis of an accumulation time of the pixel portion and a gain for an output signal of the imaging unit, which correspond to the target luminance value. The imaging element instructs the imaging device to perform exposure control if a luminance value of a subject exceeds an exposure control range in the imaging element.
Claims10
An imaging element which outputs an image signal acquired by an imaging unit having a plurality of pixel portions, the imaging element comprising:
- a receiver configured to receive a target luminance value from an imaging device;
- and
- a controller configured to execute exposure control in the imaging element on the basis of an accumulation time of the pixel portion and a gain for an output signal of the imaging unit, which correspond to the target luminance value,
- wherein the controller instructs the imaging device to perform exposure control that shifts an exposure control range of the imaging element if a luminance value of a subject exceeds the exposure control range in the imaging element.
An imaging device comprising:
- an imaging element which outputs an image signal acquired by an imaging unit having a plurality of pixel portions, the imaging element comprising:
- a receiver configured to receive a target luminance value from the imaging device;
- and
- a controller configured to execute exposure control in the imaging element on the basis of an accumulation time of the pixel portion and a gain for an output signal of the imaging unit, which correspond to the target luminance value;
- and
- an exposure controller configured to receive an exposure control instruction from the imaging element and execute exposure control that shifts an exposure control range of the imaging element if a luminance value of a subject exceeds the exposure control range in the imaging element.
A method of controlling an imaging element which outputs an image signal acquired by an imaging unit having a plurality of pixel portions comprising:
- receiving a target luminance value from an imaging device;
- executing exposure control in the imaging element on the basis of an accumulation time of the plurality of pixel portions and a gain for an output signal of the imaging unit, which correspond to the target luminance value;
- and
- instructing the imaging device to perform exposure control that shifts an exposure control range of the imaging element if a luminance value of a subject exceeds the exposure control range in the imaging element.
Dependencies are inferred from the claim text.