A pointer detection apparatus, comprising: a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction that crosses the first direction; a signal supplying circuit configured to generate transmission signals each comprised of a first code (Asi) and a second code (Bsi), and to supply the generated transmission signals to the plurality of first conductors, wherein the first and second codes (Asi, Bsi) that form one transmission signal have an equal code length and are a pair of complementary codes; a signal detection circuit connected to the plurality of second conductors and configured to detect reception signals, at least one of which corresponds to a variation of capacitance between said conductor pattern and a pointer; a correlation arithmetic operation circuit configured to calculate, for each of the reception signals detected by said signal detection circuit, a first correlation value (RAsi) between the reception signal and a first correlation value arithmetic operation signal (Asi') corresponding to the first code (Asi) and a second correlation value (RBsi) between the reception signal and a second correlation value arithmetic operation signal (Bsi') corresponding to the second code (Bsi); and a synthesis circuit configured to calculate, for each pair of the first and second correlation values (RAsi, RBsi), a synthesis correlation value (RMsi) by adding the pair of first and second correlation values (RAsi, RBsi) calculated by said correlation arithmetic operation circuit; wherein the pointer detection apparatus is configured to detect the pointer based on the synthesis correlation values (RMsi) calculated by said synthesis circuit. a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction that crosses the first direction; a signal supplying circuit configured to generate transmission signals each comprised of a first code (Asi) and a second code (Bsi), and to supply the generated transmission signals to the plurality of first conductors, wherein the first and second codes (Asi, Bsi) that form one transmission signal have an equal code length and are a pair of complementary codes; a signal detection circuit connected to the plurality of second conductors and configured to detect reception signals, at least one of which corresponds to a variation of capacitance between said conductor pattern and a pointer; a correlation arithmetic operation circuit configured to calculate, for each of the reception signals detected by said signal detection circuit, a first correlation value (RAsi) between the reception signal and a first correlation value arithmetic operation signal (Asi') corresponding to the first code (Asi) and a second correlation value (RBsi) between the reception signal and a second correlation value arithmetic operation signal (Bsi') corresponding to the second code (Bsi); and a synthesis circuit configured to calculate, for each pair of the first and second correlation values (RAsi, RBsi), a synthesis correlation value (RMsi) by adding the pair of first and second correlation values (RAsi, RBsi) calculated by said correlation arithmetic operation circuit; wherein the pointer detection apparatus is configured to detect the pointer based on the synthesis correlation values (RMsi) calculated by said synthesis circuit.