Haptic pen and haptic control waveform generation method
AssigneeWacom Co., Ltd.
InventorsTaiga SAKUMI, Noboru YAMAGUCHI, Shunya SAITO
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Abstract
To provide a haptic pen and a haptic control waveform generation method that can suppress an increase in the power consumption necessary for operating a haptic element and that can realize an increase in the continuous operation time. A haptic pen includes a linear resonant actuator (LRA) motor that operates according to a reproduced waveform. The reproduced waveform includes a resonant frequency period including a waveform of a sine wave vibrating at a resonant frequency of the LRA motor and a period including a waveform vibrating at one or more frequencies different from the resonant frequency of the LRA motor.
Claims15
A haptic pen comprising:
- a memory that stores a reproduced waveform;
- and
- a haptic element that operates according to the reproduced waveform,
- wherein the reproduced waveform includes a resonant frequency period including a waveform of a sine wave vibrating at a resonant frequency of the haptic element and a period including a waveform vibrating at one or more frequencies different from the resonant frequency.
A haptic control waveform generation method comprising:
- acquiring a series of first digital values representing an original waveform for operating a haptic element provided in a haptic pen;
- detecting a large amplitude period of the original waveform, in which the original waveform satisfies a predetermined condition in the large amplitude period;
- and
- generating a series of second digital values which represent a reproduced waveform for operating the haptic element, by replacing at least some of a plurality of first digital values included in the large amplitude period with a plurality of digital values representing a waveform of a sine wave vibrating at a resonant frequency of the haptic element.
Dependencies are inferred from the claim text.