Position pointer

A position pointer for indicating a position on a position detection sensor based on capacitive coupling between the position pointer and the position detection sensor, the position pointer comprising:

• a battery;
• a boosting circuit coupled to the battery and configured to boost a battery voltage;
• a transmission signal production circuit including a ground and configured to generate a position signal based on a boosted voltage output from the boosting circuit;
• an elongate pointer body having a distal end and a proximal end;
• a first electrode disposed near the distal end of the elongate pointer body;
• a second electrode different from the first electrode and disposed near the distal end of the elongate pointer body;
• wherein each of the first electrode and the second electrode, in operation, is capacitively coupled with the position detection sensor, independently of each other;
• and
• a transmission controlling circuit which enables the transmission signal production circuit to supply the position signal to the first electrode so that the position signal is transmitted to the position detection sensor via the first electrode in response to detection of a signal from the position detection sensor via the second electrode.

A position pointer for indicating a position on a position detection sensor based on capacitive coupling between the position pointer and the position detection sensor, the position pointer comprising:

• a power supply node configured to receive external power;
• a transmission signal production circuit including a ground and configured to generate a position signal based on the external power received via the power supply node;
• an elongate pointer body having a distal end and a proximal end;
• a first electrode disposed near the distal end of the elongate pointer body;
• a second electrode different from the first electrode and disposed near the distal end of the elongate pointer body;
• wherein each of the first electrode and the second electrode, in operation, is capacitively coupled with the position detection sensor, independently of each other;
• and
• a transmission controlling circuit which enables the transmission signal production circuit to supply the position signal to the first electrode so that the position signal is transmitted to the position detection sensor via the first electrode in response to detection of a signal from the position detection sensor via the second electrode.

A position pointer for indicating a position on a position detection sensor based on capacitive coupling between the position pointer and the position detection sensor, the position pointer comprising:

• an electromagnetic coupling circuit configured to electromagnetically receive external power;
• a transmission signal production circuit including a ground and configured to generate a position signal based on the external power received by the electromagnetic coupling circuit;
• an elongate pointer body having a distal end and a proximal end;
• a first electrode disposed near the distal end of the elongate pointer body;
• a second electrode different from the first electrode and disposed near the distal end of the elongate pointer body;
• wherein each of the first electrode and the second electrode, in operation, is capacitively coupled with the position detection sensor, independently of each other;
• and
• a transmission controlling circuit which enables the transmission signal production circuit to supply the position signal to the first electrode so that the position signal is transmitted to the position detection sensor via the first electrode in response to detection of a signal from the position detection sensor via the second electrode.