Haptic feedback device and haptic feedback method
First Claim
1. A haptic feedback device which provides haptic feedback to a user touching a panel, the haptic feedback device comprising:
- the panel;
an image display unit configured to display an image on the panel;
an image feature extraction unit configured to extract a feature of the image displayed on the panel, the feature of the image extracted being the spatial frequency of the image;
a position obtaining unit configured to obtain a first touch position which is a position of a touch made on the panel by the user and a second touch position which is a position of a touch made on the panel by the user after the touch made at the first touch position;
a speed calculation unit configured to calculate a speed of a touch starting at the first touch position and ending at the second touch position;
a modulation signal generation unit configured to generate a modulation signal having a frequency component at a frequency that increases with the speed and is dependent on the feature of the image;
a carrier frequency determination unit configured to determine a resonance frequency to be used for a frequency for the carrier signal from among a plurality of resonance frequencies of the panel, the determined resonance frequency increasing as the spatial frequency increases such that the higher the spatial frequency the higher the resonance frequency;
a carrier signal generation unit configured to generate a carrier signal for vibrating the panel having a frequency component at the determined resonance frequency determined by the carrier frequency determination unit;
a modulation unit configured to modulate the generated carrier signal using the modulation signal; and
an actuator which provides haptic feedback to the user by vibrating the panel in accordance with the modulated carrier signal.
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Accused Products
Abstract
A haptic feedback device which provides haptic feedback to a user touching a panel, the haptic feedback device including: the panel; a position obtaining unit which obtains a first touch position touched on the panel by the user and a second touch position touched on the panel by the user after the first touch position; a speed calculation unit which calculates a speed of a touch starting at the first touch position and ending at the second touch position; a modulation signal generation unit which generates a modulation signal having a frequency component at a frequency that increases with the speed; a carrier signal generation unit which generates a carrier signal for vibrating the panel; a modulation unit which modulates the carrier signal using the modulation signal; and an actuator which provides haptic feedback to the user by vibrating the panel in accordance with the modulated carrier signal.
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Citations
11 Claims
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1. A haptic feedback device which provides haptic feedback to a user touching a panel, the haptic feedback device comprising:
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the panel; an image display unit configured to display an image on the panel; an image feature extraction unit configured to extract a feature of the image displayed on the panel, the feature of the image extracted being the spatial frequency of the image; a position obtaining unit configured to obtain a first touch position which is a position of a touch made on the panel by the user and a second touch position which is a position of a touch made on the panel by the user after the touch made at the first touch position; a speed calculation unit configured to calculate a speed of a touch starting at the first touch position and ending at the second touch position; a modulation signal generation unit configured to generate a modulation signal having a frequency component at a frequency that increases with the speed and is dependent on the feature of the image; a carrier frequency determination unit configured to determine a resonance frequency to be used for a frequency for the carrier signal from among a plurality of resonance frequencies of the panel, the determined resonance frequency increasing as the spatial frequency increases such that the higher the spatial frequency the higher the resonance frequency; a carrier signal generation unit configured to generate a carrier signal for vibrating the panel having a frequency component at the determined resonance frequency determined by the carrier frequency determination unit; a modulation unit configured to modulate the generated carrier signal using the modulation signal; and an actuator which provides haptic feedback to the user by vibrating the panel in accordance with the modulated carrier signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A haptic feedback method of providing haptic feedback to a user touching a panel, the haptic feedback method comprising:
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displaying an image on the panel; extracting a feature of the image displayed on the panel, the feature of the image extracted being the spatial frequency of the image; obtaining a first touch position which is a position of a touch made on the panel by the user and a second touch position which is a position of a touch made on the panel by the user after the touch made at the first touch position; calculating a speed of a touch starting at the first touch position and ending at the second touch position; generating a modulation signal having a frequency component at a frequency that increases with the speed and is dependent on the feature of the image; determining a resonance frequency to be used for a frequency for the carrier signal from among a plurality of resonance frequencies of the panel, the determined resonance frequency increasing as the spatial frequency increases such that the higher the spatial frequency the higher the resonance frequency; generating a carrier signal for vibrating the panel having a frequency component at the determined resonance frequency determined; modulating the generated carrier signal using the modulation signal; and providing haptic feedback to the user by vibrating the panel in accordance with the modulated carrier signal. - View Dependent Claims (11)
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Specification