王士绅, 隋修宝, 陈钱, 顾国华. 高速高清CCD自适应相关双采样技术[J]. 红外与激光工程, 2014, 43(1): 155-159.
引用本文: 王士绅, 隋修宝, 陈钱, 顾国华. 高速高清CCD自适应相关双采样技术[J]. 红外与激光工程, 2014, 43(1): 155-159.
Wang Shishen, Sui Xiubao, Chen Qian, Gu Guohua. High speed HD CCD adaptive correlated double sampling technique[J]. Infrared and Laser Engineering, 2014, 43(1): 155-159.
Citation: Wang Shishen, Sui Xiubao, Chen Qian, Gu Guohua. High speed HD CCD adaptive correlated double sampling technique[J]. Infrared and Laser Engineering, 2014, 43(1): 155-159.

高速高清CCD自适应相关双采样技术

High speed HD CCD adaptive correlated double sampling technique

  • 摘要: 相关双采样技术被广泛地应用于CCD 视频采集,能够有效地消除复位噪声,白噪声等CCD输出噪声。但是当CCD 工作在高帧频状态下,需要高速的输出数据,由于像素时钟较快会出现采样位置不稳的情况。文中采用自适应相关双采样技术,可以自适应地调整采样脉冲的相位,使相关双采样的两个采样脉位于合理的采样位置,能够正确地采集像素信息。采用自适应调整CCD 相关双采样位置的技术,能使高清高速CCD 在像素频率很高的情况下,也能稳定地工作,输出高质量的图像。

     

    Abstract: Correlated double sampling technique is widely used in CCD video capture, and can effectively eliminate the reset noise, white noise CCD output noise. However, when the CCD works in the state of the high frame rate, the need for high-speed output of data faster pixel clock appears the sampling position is unstable. This article used adaptive correlated double sampling technique, could adaptively adjust the phase of sampling pulses, so that the correlated double sampling of two sampling pulses were collected at a reasonable sampling positions, and pixel information could be collected correctly. Adaptive technology was used to adjust the CCD correlated double sampling location, to make HD high-speed CCD pixels high frequency, correlated double sampling also could be adopted in a reasonable sampling location, the CCD working in good condition.

     

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