发明名称 |
Image sensor including heterogeneous analog to digital convertor with different noise characteristics |
摘要 |
An image sensor in accordance with exemplary embodiments of the inventive concept may include a pixel sensor array which includes an active pixel sensor and an optical black pixel sensor; a first analog to digital converter configured to convert a first sensing signal, which is provided from the active pixel sensor, to a first digital signal; a second analog to digital converter configured to convert a second sensing signal, which is provided from the optical black pixel sensor, to a second digital signal; and an output buffer configured to temporarily store and output the first digital signal and the second digital signal, wherein a plurality of noise characteristics of the second analog to digital converter is different from a plurality of noise characteristics of the first analog to digital converter. |
申请公布号 |
US9537501(B2) |
申请公布日期 |
2017.01.03 |
申请号 |
US201414546154 |
申请日期 |
2014.11.18 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
Lee Hyeokjong;Kim Byung-Jo;Kim Se-jun |
分类号 |
H01L27/146;H03M1/12;H03M1/56 |
主分类号 |
H01L27/146 |
代理机构 |
Sughrue Mion, PLLC |
代理人 |
Sughrue Mion, PLLC |
主权项 |
1. An image sensor comprising:
a pixel sensor array which comprises an active pixel sensor and an optical black pixel sensor; a first analog to digital converter configured to convert a first sensing signal, which is provided from the active pixel sensor, to a first digital signal; a second analog to digital converter configured to convert a second sensing signal, which is provided from the optical black pixel sensor, to a second digital signal; and an output buffer configured to temporarily store and output the first digital signal and the second digital signal, wherein a noise characteristic of the second analog to digital converter is different from a noise characteristic of the first analog to digital converter. |
地址 |
Suwon-si KR |