A pointer detection apparatus for detecting a pointer positioned on a conductor pattern, the conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction which crosses the first direction, the pointer detection apparatus comprising: a code supplying circuit configured to provide a plurality of modulated code strings of different codes (C k), the code supplying circuit being further configured to supply predetermined ones of the modulated code strings to the first conductors disposed in the first direction; a reception section including a correlation calculation circuit (34, 134) that is configured to demodulate signals produced in the second conductors disposed in the second directions to produce demodulated signals; characterized in that the correlation calculation circuit is further configured to carry out correlation calculation between the demodulated signals and correlation calculation codes (C k ') that respectively correspond to the code strings (C k) to determine first correlation calculation values and to carry out the correlation calculation with a correlation value calculation code (C 1 ') of a further code (C 1) to determine a further correlation calculation value, wherein the further code (C 1) is output by a code production circuit of the code supplying circuit and is directly supplied to the reception section without passing through any of the first conductors; and wherein the reception section further includes a position detection circuit configured to detect the pointer positioned on said conductor pattern based on the first correlation calculation values and the further correlation calculation value determined by said correlation calculation circuit. a code supplying circuit configured to provide a plurality of modulated code strings of different codes (C k), the code supplying circuit being further configured to supply predetermined ones of the modulated code strings to the first conductors disposed in the first direction; a reception section including a correlation calculation circuit (34, 134) that is configured to demodulate signals produced in the second conductors disposed in the second directions to produce demodulated signals; characterized in that the correlation calculation circuit is further configured to carry out correlation calculation between the demodulated signals and correlation calculation codes (C k ') that respectively correspond to the code strings (C k) to determine first correlation calculation values and to carry out the correlation calculation with a correlation value calculation code (C 1 ') of a further code (C 1) to determine a further correlation calculation value, wherein the further code (C 1) is output by a code production circuit of the code supplying circuit and is directly supplied to the reception section without passing through any of the first conductors; and wherein the reception section further includes a position detection circuit configured to detect the pointer positioned on said conductor pattern based on the first correlation calculation values and the further correlation calculation value determined by said correlation calculation circuit.