发明名称 |
Solid-state imaging apparatus |
摘要 |
A solid-state imaging apparatus comprising a plurality of pixels generating a photoelectric conversion signal, a column amplifying unit corresponding to columns of the pixels, for outputting a first and second signals generated by amplifying the photoelectric conversion signal at a smaller first gain and larger second gain respectively, an analog to digital converter (21) for converting the first and second signals from an analog signal to a digital signal, a comparing unit (224) for inputting the digital signal from the analog to digital converter, level-shifting into the same gain level the first and second signals converted by the analog to digital converter, and thereafter detecting a gain error between the level-shifted first and second signals, and a correction unit (226) for correcting the first and second signals based on the gain error. |
申请公布号 |
US8928789(B2) |
申请公布日期 |
2015.01.06 |
申请号 |
US201113820978 |
申请日期 |
2011.09.28 |
申请人 |
Canon Kabushiki Kaisha |
发明人 |
Hashimoto Seiji;Shigeta Kazuyuki |
分类号 |
H04N3/14;H04N5/335;H04N3/16;H01L27/146;H04N5/378;H04N5/243 |
主分类号 |
H04N3/14 |
代理机构 |
Fitzpatrick, Cella, Harper & Scinto |
代理人 |
Fitzpatrick, Cella, Harper & Scinto |
主权项 |
1. A solid-state imaging apparatus comprising:
a plurality of pixels arranged in a matrix for generating a signal by a photoelectric conversion; a column amplifying unit arranged corresponding to each of columns of the pixels, for outputting a first signal generated by amplifying the signal from the plurality of pixels at a first gain, and for outputting a second signal generated by amplifying the signal from the plurality of pixels at a second gain larger than the first gain; an analog to digital converter for converting the first and second signals from an analog signal to a digital signal; a comparing unit for receiving the digital signal from the analog to digital converter, level-shifting into the same gain level the first and second signals, and thereafter detecting a gain error between the level-shifted first and second signals; and a correction unit for correcting the first and second signals based on the gain error. |
地址 |
Tokyo JP |