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Fig. 1. (a) Circuits of conventional CMOS bandgap voltage reference. (b) PSR small signal analysis model of conventional CMOS bandgap voltage reference. The base-emitter junction voltage of bipolar transistor, in generally the forward voltage of a pn-junction, exhibits negatives temperature-coefficient, which is about-1.5m VlaC [6], [7]. The difference(More)
To enhance the visual quality of an image that is degraded by uneven light, an effective method is to estimate the illumination component and compress it. Some previous methods have either defects of halo artifacts or contrast loss in the enhanced image due to incorrect estimation. In this paper, we discuss this problem and propose a novel method to(More)
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