Patent ID: 6476860
Filing Date: 2002-11-05
Classification: H04N

Abstract:
An image sensor comprising:a plurality of photosensitive elements arranged in a matrix of M columns and N rows, where M>1 and N>1; a center of mass circuit coupled to said photosensitive elements, said center of mass circuit including a resistive network and a normalization circuit including at least one switching element, where the center of mass circuit identifies a center of mass location in the matrix and includes: a row circuit, where the row circuit identifies a center of mass row value in each row of the matrix and identifies a row intensity for each row; a horizontal circuit, where the horizontal circuit identifies a center of mass horizontal value relative to the matrix based upon the center of mass row values, such that the center of mass horizontal value indicates the horizontal coordinate of the center of mass location; and a vertical circuit, where the vertical circuit identifies a center of mass vertical value relative to the matrix based upon the row intensities, such that the center of mass vertical value indicates the vertical coordinate of the center of mass location.