| 摘要 |
An optical sensor including an A/D conversion circuit and operative at high speed. The optical sensor (1) has an optical sensing part (10) where (KxMxN) photodiodes (PDk,m,n) are arranged in a matrix of M rows and (KxN) columns. For the (KxN) photodiodes (PDk,m,n (k=1 to K, n=1 to N)) of each row, processings (charge storage, CDS, filtering, and A/D conversion) are carried out every time T. The charge storage operation by an integrating circuit (20m,n), the CDS operation by a CDS circuit (30m,n), the filtering operation by a filter circuit (40m,n), and the A/D conversion operation by an A/D conversion circuit (50m,n) are carried out every time (NxT). |
