Patent ID: 8575534

Claim:
Apparatus comprising: an array of detector elements logically arranged in a plurality of rows and a plurality of columns, wherein each of said detector elements is a two terminal device that provides a differential electrical signal at its terminals in response to incident radiation; row outputs O A and O B having respective row output signals A and B and column outputs O C and O D having respective column output signals C and D, wherein said row and column outputs are connected to said array such that the total row output signal A+B and the total column output signal C+D are differential signals for any detection event sensed by said array; a plurality of row lines, wherein each row of said detector elements corresponds to one of said row lines; a plurality of column lines, wherein each column of said detector elements corresponds to one of said column lines; a capacitive row charge splitter connected to each of said row lines, wherein said row charge splitters are all connected to said row outputs O A and O B , wherein each row charge splitter determines the splitting of charge from its corresponding row line to said row outputs O A and O B , and wherein each of said row charge splitters provides a distinct charge split ratio; and a capacitive column charge splitter connected to each of said column lines, wherein said column charge splitters are all connected to said column outputs O C and O D , wherein each column charge splitter determines the splitting of charge from its corresponding column line to said column outputs O C and O D , and wherein each of said column charge splitters provides a distinct charge split ratio; wherein the relative amplitude of A and B for said detection event enables vertical position determination of said detection event; wherein the relative amplitude of C and D for said detection event enables horizontal position determination of said detection event; wherein each of said detector elements has one of its terminals connected to its corresponding row line and the other of its terminals connected to its corresponding column line.