Information processing apparatus and controlling method
An information processing apparatus includes a display section; a touch sensor section which is arranged on a screen of the display section and detects touching of a manipulation medium on the screen; a denoising filter part which acquires first detected position data on the manipulation medium on the screen detected at predetermined detection intervals in response to touching of the manipulation medium on the screen, denoises the first detected position data on the basis of the first detected position data and thereby generates second detected position data; and an input processing part which acquires the second detected position data that the denoising filter part generates and makes the display section display a movement locus of the manipulation medium that the manipulation medium is moved on the screen in a state of touching on the screen on the basis of the second detected position data.
1. An information processing apparatus comprising:
a display;
a touch sensor that is arranged on a screen of the display and that detects a plurality of pieces of first detected position data at predetermined detection intervals in response to touching of a manipulation medium on the screen;
a denoising filter that, when executed by a processor, acquires from the touch sensor the first detected position data on the manipulation medium on the screen and denoises the first detected position data to generate second detected position data; and
the processor that acquires the second detected position data and causes the display to display, based on the second detected position data, a movement locus of the manipulation medium that moves on the screen in a state of touching the screen, wherein
the processor further:
acquires the first detected position data,
upon detecting that a moving velocity or a moving acceleration of the manipulation medium is larger than a predetermined threshold value:
generates, based on the first detected position data rather than the second detected position data, predicted position data that indicates a predicted movement position of the manipulation medium, and
causes the display to display the movement locus of the manipulation medium on the screen based on the second detected position data and the predicted position data generated based on the first detected position data, and
upon generating the predicted position data based on the second detected position data:
causes the display to display the movement locus of the manipulation medium on the screen based on the second detected position data and the predicted position data generated based on the second detected position data.
2. The information processing apparatus according to claim 1 , wherein
the processor further:
switches between the first detected data and the second detected data and thereby supplies either the first detected position data or the second detected position data depending on the moving velocity or the moving acceleration of the manipulation medium, and
upon detecting that the moving velocity or the moving acceleration of the manipulation medium is equal to or less than the predetermined threshold value, generates, based on the second detected position data rather than the first detected position data, the predicted position data that indicates the predicted movement position of the manipulation medium.
3. The information processing apparatus according to claim 1 , wherein
the processor executes a process based on an Operating System (OS), and
the denoising filter is realized by a device driver that is added to the OS.
4. The information processing apparatus according to claim 1 , wherein
the touch sensor includes the denoising filter.
5. A controlling method of controlling operations of an information processing apparatus that comprises: a display; a touch sensor that is arranged on a screen of the display and detects touching of a manipulation medium on the screen; a denoising filter; and a processor, the method comprising:
detecting, by the touch sensor, a plurality of pieces of first detected position data at predetermined detection intervals in response to touching of a manipulation medium on the screen;
acquiring, when executed the denoising filter by the processor, from the touch sensor the first detected position data on the manipulation medium on the screen, and denoising the first detected position data to generate second detected position data;
acquiring, by the processor, the second detected position data, and causing the display to display, based on the second detected position data, a movement locus of the manipulation medium that moves on the screen in a state of touching the screen;
acquiring, by the processor, the first detected position data;
upon the processor detecting that a moving velocity or a moving acceleration of the manipulation medium is larger than a predetermined threshold value:
generating, by the processor based on the first detected position data rather than the second detected position data, predicted position data that indicates a predicted movement position of the manipulation medium, and
causing, by the processor, the display to display the movement locus of the manipulation medium on the screen based on the second detected position data and the predicted position data generated based on the first detected position data; and
upon the processor generating the predicted position data based on the second detected position data:
causing, by the processor, the display to display the movement locus of the manipulation medium on the screen based on the second detected position data and the predicted position data generated based on the second detected position data.