← 返回 JSSC 论文列表JSSC 2013第1期Memory0.18μmCMOS Image Sensor
A Global-Shutter CMOS Image Sensor With Readout Speed of 1-Tpixel/s Burst and 780-Mpixel/s Continuous Y asuhisa Tochigi, Katsuhiko Hanzawa, Y uri Kato
一款具有1Tpixel/s突发读取速度和780Mpixel/s连续读取速度的全局快门CMOS图像传感器。
1Tpixel/s突发视频操作,10Mfps全分辨率,20Mfps半分辨率,780Mpixel/s连续视频操作
全局快门CMOS图像传感器高速读取片内存储器噪声降低电路
▸创新点1:每个像素的多片内存储器(方法创新) - 每个像素集成128个片内存储器,显著提升帧缓存能力,支持1 Tpixel/s的突发视频操作和10 Mfps的全分辨率高速拍摄,解决了传统CMOS图像传感器在高速连续拍摄时的数据存储瓶颈。
▸创新点2:像素与片内存储区域的空间分离(系统创新) - 通过物理隔离像素区域和存储区域,优化了芯片布局,减少了信号串扰,同时提高了存储密度和读取效率,为780 Mpixel/s的连续视频操作提供了硬件基础。
▸创新点3:每列的多像素输出线(电路创新) - 每列设计多条像素输出线,并行化数据读取路径,大幅提升数据吞吐率,结合噪声抑制电路,实现了高信噪比下的超高速数据传输。
▸创新点4:灵活可选的片内存储器(系统创新) - 支持存储器的动态配置,可根据分辨率需求选择128帧(全分辨率)或256帧(半分辨率)模式,兼顾灵活性与性能,扩展了应用场景。
Abstract
A 400 256 pixels global-shutter high-speed CMOS image sensor including 128 on-chip memories/pixel has been fabricated in a 0.18- m2 P 4 MC M O Sw i t hp i n n e dp h o t o - diode process. The key technol ogies of this image sensor are as follows: multiple on-chip memories for each pixel, spatial separa- tion of pixel and on-chip memory regions, multiple pixel output wires for each column, in-pixel noise reduction circuits, in-pixel source-follower current-sources and flexibly selectable on-chip memories. This CMOS image sens or achieves 1 Tpixel/s burst video operation, a full resolution of 10 Mfps with 128 frame sa n da half resolution of 20 Mfps with 256 frames, and 780 Mpixel/s con- tinuous video operation on the sa me chip. The power consumption at 1 Tpixel/s was 24 W, while the image sensor operates wi thout active cooling.