fixed pattern noise meaning in English

固定图形噪声

The column output circuit is realized by double sample and hold circuit which can effectively decrease fpn ( fixed pattern noise )
列输出电路采用双采样电路,该电路能有效地消除固定模式噪声。
The differential , which can be placed in roic chip , is used to difference the two voltage signals in cds in order to reduce fixed pattern noise in roic
该差分器可置于读出电路片内，对相关双采样电压信号进行差分，以减小读出电路的固定图形噪声。
The correlated double sampling ( cds ) circuits structure is used to reduce the fixed pattern noise ( fpn ) of the cmos sensors , and improve the signal - noise ratio ( snr ) . the 256 photodiodes arrayed 4 quadrants sensor consists 16x16 active photodiodes array . correlated double sampling processing circuits , output buffer amplifiers and digital control part
针对cmos制造工艺中mos器件固定模式噪声( fixedpatternnoise ， fpn )较大的不足，研究中采用了相关二次采样( correlateddoublesampling ， cds )电路降低固定模式噪声，从而提高了传感器的信噪比( signalnoiseratio ， snr ) 。