| 发明名称 |
ADAPTIVE GAIN CONTROL USING SAMPLE-AND-HOLD CIRCUIT FOR ANALOG CDS |
| 摘要 |
An image processing circuit includes a first sample-and-hold circuit that samples a first data from a pixel, a second sample-and-hold circuit that samples a second data from the pixel, a voltage-to-current circuit that includes a resistor and a current source and receives the first and second data to output a difference data, an adaptive gain control determination circuit that determines whether a rate of change of a signal from the pixel exceeds a threshold based on an output of the second sample-and-hold circuit, and a current-mode ADC that converts the difference data from an analog form to a digital form. |
| 申请公布号 |
US2017127002(A1) |
申请公布日期 |
2017.05.04 |
| 申请号 |
US201514928536 |
申请日期 |
2015.10.30 |
| 申请人 |
Sony Semiconductor Solutions Corporation |
发明人 |
Eshel Noam;Zeituni Golan |
| 分类号 |
H04N5/378;H04N5/04 |
主分类号 |
H04N5/378 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An image processing circuit, comprising:
a first sample-and-hold circuit configured to sample a first data from a pixel; a second sample-and-hold circuit configured to sample a second data from the pixel; a voltage-to-current circuit including a resistor and a current source, and configured to receive the first data and the second data and output a difference data; an adaptive gain control determination circuit configured to determine whether a rate of change of a signal from the pixel exceeds a first predetermined threshold based on an output of the second sample-and-hold circuit; and a current-mode analog-to-digital converter configured to convert the difference data from an analog form to a digital form. |
| 地址 |
Kanagawa JP |
