A decorrelation and analog-to-digital conversion scheme aiming to reduce the power consumption of infrared image sensors is\r\npresented in this paper. To exploit both intraframe redundancy and inherent photon shot noise characteristics, a column based 1D\r\nHaar analog wavelet transform combined with variable gain amplification prior to A/D conversion is used. This allows to use only\r\nan 11-bit ADC, instead of a 13-bit one, and to save 15% of data transfer. An 8Ã?â??16 pixels test circuit demonstrates this functionality.
Loading....