具寬動態範圍和對數響應輸出之線性數位像素

一種具有線性排列的數位化像素感應器(DPS),並且具有寬動態範圍和對數響應的設計,使用標準0.5u 的邏輯COMS標準製程來實現。數位化的像素感測器(DPS)包含了光二極體,放大器，比較器，8位元動態記憶體，一非線性斜坡訊號產生器。利用非線性斜坡訊號產生器可使類比訊號轉換成數位訊號時,能夠傭有全部的動態範圍和多重解析度的轉換(GAMMA的轉換)

關鍵字

Digital Pixel Sensor (DPS) ； Analog-to-Digital converter (ADC) ； Fixed Pattern Noise (FPN) ； Gray Code ； Correlated Double Sampling (CDS) ； Passive Pixel Sensor (PPS) ； Active Pixel Sensor (APS)

並列摘要

A linear Digital Pixel Sensor (DPS) with wide dynamic range and logarithmic response designed in standard 0.5-um CMOS logic process is presented. The Digital Pixel Sensor (DPS) includes a photo diode with capacitive trans-impedance amplifier, a comparator, a 8bit dynamic memory, a non-linear ramp generator. With a nonlinear ramp generator it allows the Analog-to-Digital converter operating in its full dynamic range and also enables the implementation of the ADC in multi-resolution mode.

並列關鍵字

參考文獻

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具寬動態範圍和對數響應輸出之線性數位像素

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