Patent attributes
A stylus usable with non-in-cell type and in-cell type electronic apparatuses is provided. A stylus, in operation, transmits pen pressure data P to an electronic apparatus. The stylus includes a stylus electrode and a signal processing circuit. The stylus electrode forms a coupling capacitance with a sensor electrode of the electronic apparatus. The signal processing circuit detects an uplink signal US using the stylus electrode, extracts a command from the detected uplink signal US, determines, based on the extracted command, in which mode to operate between a first mode in which the data is transmitted using M (M≥1) first periods and a second mode in which the data is transmitted using N (N>M) second periods, and repeatedly transmits the data in accordance with the determined mode.
