| 摘要 |
Provided is an imaging apparatus, including: a first and a second A/D conversion units converting signals output from a first and a second groups of columns of pixels, respectively; a first reference signal supply unit supplying, to the first A/D conversion unit, at least one of reference signals having a first and a second change rates per time; a second reference signal supply unit supplying, to the first A/D conversion unit, at least one of reference signals having a third and a fourth change rate per time; and an adjusting unit adjusting at least one of the first to fourth change rates so that at least one of a difference in change rate per time between the first and the third change rate, and a difference in change rate per time between the second and the fourth change rate is reduced. |
| 主权项 |
1. An imaging apparatus, comprising:
a pixel array including a plurality of pixels arranged in rows and columns; a first A/D conversion unit, which is arranged correspondingly to a first group of the columns of the pixels in the pixel array, and is configured to perform A/D conversion of an analog signal that is output from each of the corresponding pixels to a digital signal by comparing the analog signal with a first reference signal having a potential that changes with a predetermined change rate per time; a second A/D conversion unit, which is arranged correspondingly to a second group of the columns of the pixels in the pixel array, and is configured to perform A/D conversion of an analog signal that is output from each of the corresponding pixels to a digital signal by comparing the analog signal with a second reference signal having a potential that changes with a predetermined change rate per time; a first reference signal supply unit configured to supply, to the first A/D conversion unit, as the first reference signal, at least one of a reference signal having a first change rate per time and a reference signal having a second change rate per time that is smaller than the first change rate; a second reference signal supply unit configured to supply, to the second A/D conversion unit, as the second reference signal, at least one of a reference signal having a third change rate per time and a reference signal having a fourth change rate per time that is smaller than the third change rate; and an adjusting unit configured to adjust at least one of the first change rate, the second change rate, the third change rate, and the fourth change rate so that at least one of a difference in change rate per time between the first change rate and the third change rate, and a difference in change rate per time between the second change rate and the fourth change rate is reduced. |
