论文部分内容阅读
1 枢图 CMOS图像芯片,又称CMOS图像传感器或CMOS摄像机,它是由像元阵列（Pixel Array）和处理电路组成,形成一个完整的摄像系统。其示意图可见图1,该图像芯片（camera on a chip）中的处理电路,有行、列选通逻辑、时序与逻辑,模拟信号处理器（ASP）及模数转换器（ADC）等组成。其中定时和控制电路限制信号读出模式、设定积分时间、控制数据输出率等,模拟/数字转换器可以有像素级、列级和芯片级,即芯片有一个单一高速的A/D转换器,列级使用多个较低速度的A/D转换器,而像素级则使用多个低速A/D转换器,CMOS图像传感器图像信号有几种读出模式:整个阵列逐项扫描、窗口感兴趣读出、跳跃式-每隔一个（或两个或更多个像元）像元读出,即允许图像抽取,以增加读出速率。
1 pivot map CMOS image chip, also known as CMOS image sensor or CMOS camera, which is composed of pixel array (Pixel Array) and processing circuit to form a complete camera system. The schematic diagram shown in Figure 1, the processing circuit in the camera on a chip, there are row and column gate logic, timing and logic, analog signal processor (ASP) and analog-digital converter (ADC) and other components. The timing and control circuit limits the signal read mode, set the integration time, the control data output rate, analog / digital converter can have pixel level, column level and chip level, the chip has a single high-speed A / D converter , Multiple low-speed A / D converters at the column level, and multiple low-speed A / D converters at the pixel level. The CMOS image sensor has several readout modes for image signals: the entire array is scanned one by one, with a sense of window Interesting readout, leap - read every other cell (or two or more pixels), allowing image extraction to increase the readout rate.