DYNAMIC RANGE EXTENSION FOR CMOS IMAGE SENSORS

摘要

An image sensor (Fig. 3) for capturing and producing an image includes a photoreceptor array that receives light and produces a signal for each pixel of the image. The image sensor further includes amplification circuitry (36) that amplifies the signals. The amplification circuitry (36) provides two distinct gains for each of the signals to produce two output signal levels. The image sensor also includes a fusion module 33), which combines the two output signal levels into one signal level. Accordingly, overall dynamic range of the image sensor is increased.