JP2020021518A5 - - Google Patents

Claims (5)

It is configured to be executed by a sensor controller connected to a sensor pattern including a plurality of sensor electrodes, and to be capable of transmitting a pen signal via a capacitance formed between a pen electrode provided at a tip portion and the sensor pattern. A method of detecting the position of an active pen, comprising:
A pen position, which is the position of the active pen, is detected by each of the plurality of sensor electrodes of a pen signal transmitted through the pen electrode, and based on the level of the detected pen signal at each of the plurality of sensor electrodes. Is detected, and when a plurality of positions where the level of the pen signal is equal to or higher than a predetermined level are detected at a distance, the level of the pen signal that is equal to or higher than the predetermined level of the sensor electrode is detected. The position with the smaller number of consecutive lines is detected as the pen position,
Active pen position detection method. When a plurality of positions where the level of the pen signal is equal to or higher than a predetermined level are detected at a distance, by performing pen position processing for determining a pen position from the plurality of detected positions, While detecting the position where the number of consecutive sensor electrodes in which the level of the certain pen signal is detected is smaller as the pen position,
When only one position where the level of the pen signal is equal to or higher than a predetermined level is detected, the pen position processing is skipped,
The position detecting method of the active pen according to claim 1. The pen position processing is
Resetting the pen position table,
Setting a plurality of the detected positions in the pen position table;
Setting the pen position table as valid for one of the plurality of positions;
In the setting step, the pen position table is set to be valid for the smallest number of consecutive sensor electrodes in which the level of the pen signal that is equal to or higher than the predetermined level is detected among the plurality of positions.
The position detecting method of the active pen according to claim 2. Outputting the position set as valid in the pen position table to the host processor,
The position detection method of the active pen according to claim 3. The position of an active pen, which is connected to a sensor pattern including a plurality of sensor electrodes and is configured to be capable of transmitting a pen signal via a capacitance formed between the pen electrode provided at the tip and the sensor pattern, is detected. A sensor controller that
A pen position, which is the position of the active pen, is detected by each of the plurality of sensor electrodes of a pen signal transmitted through the pen electrode, and based on the level of the detected pen signal at each of the plurality of sensor electrodes. Is detected, and when a plurality of positions where the level of the pen signal is equal to or higher than a predetermined level are detected at a distance, the level of the pen signal that is equal to or higher than the predetermined level of the sensor electrode is detected. The position with the smaller number of consecutive lines is detected as the pen position,
Sensor controller.