CCM培训资料.pdfVIP

CIS Camera Module CCM （CIS Camera Module ） 一、 CIS(CMOS Image Sensor) CCD(Charge Coupled Device ) 1. CIS (1) CIS Camera System Block Diagram (2) Optical Format of Image Sensor 1 CIS Camera Module (3) Display Resolution Standards 2. CCD CCD 是通过光照的不同引起的电荷分布的不同来记录被摄物体的视觉 特征。 CCD 的优势在于成像质量好，但是由于制造工艺复杂，只有少数的厂 商能够掌握，所以导致制造成本居高不下，特别是大型 CCD，价格非常高 昂。 (1) CCD Operating Scheme 2 CIS Camera Module (2) CCD Camera 3. CIS CCD (1) 比较 (2) 从以下几个方面进一步作对比 3 CIS Camera Module Responsibility 定义： Quantity of transferred/input light energy per unit CIS is little better than CCD Dynamic Range 定义：Pixel’s saturation ratio against Pixel’s signal threshold CCD is better than CIS as much double Uniformity 定义：Pixel to Pixel responsibility’s uniformity at same condition CCD better : Amps’ offset, process variations, dark and illuminated non-uniformities Shuttering 定义：Capability of expose/close Speed CIS better, located on same chip of other function(ADC/Amp..) Anti-blooming 定义：Local overexposure filtering capability Biasing and Clocking CIS is better because CIS’ function is generated by same chip 在相同分辨率下，CMOS 价格比 CCD 便宜，但是 CMOS 器件产生的图像质量相比 CCD 来说要低一些。到目前为止，市面上绝大多