Solid-state image apparatus and image system
AssigneeCanon Kabushiki Kaisha
InventorDaisuke Yoshida
Life of this patent
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Abstract
A solid-state image apparatus includes a pixel unit including a plurality of pixels arranged in a matrix, a plurality of amplifiers each provided to each of columns of the pixel unit, and each configured to amplify a signal output from a pixel in the corresponding one of the columns, a plurality of comparison units each provided to each of the plurality of amplifiers, and each configured to compare a level of an output signal from a corresponding one of the plurality of amplifiers with a predetermined threshold value and a control unit configured to control a gain of each of the plurality of amplifiers based on a result of comparing of a corresponding one of the plurality of comparison units.
Claims14
A solid-state image apparatus comprising:
- a pixel unit including a plurality of pixels arranged in a matrix;
- a plurality of amplifiers each provided to each of columns of the pixel unit, and each configured to amplify a signal output from a pixel in the corresponding one of the columns;
- a plurality of comparison units each provided to each of the plurality of amplifiers, and each configured to compare a level of an output signal from a corresponding one of the plurality of amplifiers with a predetermined threshold value;
- and
- a control unit configured to control a gain of each of the plurality of amplifiers based on a result of comparing of a corresponding one of the plurality of comparison units,
- wherein
- the plurality of comparison units each include an output restriction unit configured to restrict the level of the output signal when the level of the output signal exceeds the predetermined threshold value, and
- the control unit outputs a signal indicating whether or not the output restriction unit has operated.
Dependencies are inferred from the claim text.