Stylus and sensor control circuit

A stylus comprising:

• a first transmission circuit which, in operation, generates a first downlink signal through a tip electrode;
• a second transmission circuit which, in operation, generates a second downlink signal through a tail electrode, wherein the second downlink signal is different from the first downlink signal;
• and
• a control circuit which, in operation, controls the first transmission circuit and the second transmission circuit according to a plurality of transmission modes, wherein the transmission modes include:
• a first transmission mode in which the control circuit controls the first transmission circuit to transmit the first downlink signal from the tip electrode and controls the second transmission circuit to not transmit the second downlink signal from the tail electrode,
• a second transmission mode in which the control circuit controls the first transmission circuit to not transmit the first downlink signal from the tip electrode and controls the second transmission circuit to transmit the second downlink signal from the tail electrode, and
• a third transmission mode in which the control circuit controls the first transmission circuit to transmit the first downlink signal from the tip electrode and controls the second transmission circuit to transmit the second downlink signal from the tail electrode.