Electronic device for selective transmission of downlink signal to sensor controller

A control method executed by a stylus communicable with a sensor controller coupled to a sensor, the control method comprising:

• receiving, via an electrode of the stylus, an uplink signal from the sensor via capacitive coupling, wherein the uplink signal includes a local identifier;
• responsive to the local identifier in the uplink signal received via the electrode being not stored in a memory of the stylus, storing the local identifier in the memory;
• and
• responsive to the electrode not receiving the uplink signal for a defined period of time, or responsive to the electrode receiving the uplink signal that does not include the local identifier stored in the memory for the defined period of time, deleting the local identifier from the memory.

A non-transitory computer-readable medium storing a program which, when executed by a stylus communicable with a sensor controller coupled to a sensor, causes the stylus to perform a process including:

• receiving, via an electrode of the stylus, an uplink signal from the sensor via capacitive coupling, wherein the uplink signal includes a local identifier;
• responsive to the local identifier in the uplink signal received via the electrode being not stored in a memory of the stylus, storing the local identifier in the memory;
• and
• responsive to the electrode not receiving the uplink signal for a defined period of time, or responsive to the electrode receiving the uplink signal that does not include the local identifier stored in the memory for the defined period of time, deleting the local identifier from the memory.