Touch panel system and electronic device
In a touch panel system ( 1 ) of the present invention, a stylus pen ( 3 ) produces output that indicates that a quantitative characteristic value is increased from the characteristic value of a previous output by using a waveform that corresponds to an (L+1)-th drive line (DL L+1 ) other than L numbers of drive lines (DL 1 to DL L ) and, meanwhile, produces output that indicates that the quantitative characteristic value is decreased from the characteristic value of the previous output by using a waveform that corresponds to an (L+2)-th drive line (DL L+2 ) other than the L numbers of drive lines (DL 1 to DL L ). A touch panel controller ( 10 ) includes a conversion output unit ( 19 ) that converts and outputs the quantitative characteristic value by using the sum of the initial value of the quantitative characteristic value and the number of outputs×the unit amount of increase or decrease in the waveform that corresponds to the (L+1)-th drive line (DL L+1 ) or in the waveform that corresponds to the (L+2)-th drive line (DL L+2 ).
1. A touch panel system comprising:
a touch pen;
a touch panel that has electrostatic capacitances formed at each intersection of K (K is an integer greater than or equal to two) numbers of first signal lines and L (L is an integer satisfying L≧K) numbers of second signal lines;
and a touch panel controller,
wherein the touch panel controller outputs drive signals that drive the K numbers of the first signal lines or the L numbers of the second signal lines from a drive unit through L numbers of drive signal lines and receives input of detection signals from the K numbers of the first signal lines or the L numbers of the second signal lines detected by a detecting unit through L numbers of detection signal lines on the basis of a change in charges that is accumulated in the electrostatic capacitances due to the touch pen when the touch pen touches the touch panel,
the touch pen is configured of an electronic pen that outputs a quantitative characteristic value,
the electronic pen produces output that indicates that the quantitative characteristic value of the electronic pen is increased from the characteristic value of a previous output by using a waveform that corresponds to an (L+1)-th drive signal line other than the L numbers of the drive signal lines and, meanwhile, produces output that indicates that the quantitative characteristic value of the electronic pen is decreased from the characteristic value of the previous output by using a waveform that corresponds to an (L+2)-th drive signal line other than the L numbers of the drive signal lines, and
the touch panel controller includes a conversion output unit that converts and outputs the quantitative characteristic value by using the sum of the initial value of the quantitative characteristic value and the number of outputs×the unit amount of increase or decrease in the waveform that corresponds to the (L+1)-th drive signal line or in the waveform that corresponds to the (L+2)-th drive signal line.
2. The touch panel system according to claim 1 ,
wherein the conversion output unit includes a unit increase or decrease amount changing unit that changes the unit amount of increase or decrease.
3. The touch panel system according to claim 2 ,
wherein the unit increase or decrease amount changing unit includes a continuous increase or decrease changing unit that increases or decreases the unit amount of increase or decrease when the continuous number of outputs in each of the waveform which corresponds to the (L+1)-th drive signal line and the waveform which corresponds to the (L+2)-th drive signal line is P (P is an integer greater than or equal to two).
4. The touch panel system according to claim 1 ,
wherein the electronic pen includes a pen pressure sensor.
5. An electronic device comprising:
the touch panel system according to claim 1 .