Haptic feedback device, haptic feedback method, driving signal generating device and driving signal generation method

摘要

A haptic feedback device includes: a plurality of actuators for vibrating a panel; a touch information obtaining unit for obtaining a plurality of touch positions on the panel; a haptic feedback determining unit for determining a first touch position at which to provide haptic feedback from among the plurality of touch positions; and a driving signal obtaining unit for obtaining first driving signals for driving the actuators to vibrate the panel at the first touch position according to a first haptic signal and vibrate the panel at a second touch position more weakly than at the first touch position, the first driving signals being generated using transfer functions from the actuators to the first touch position or a vicinity thereof and transfer functions from the actuators to the second touch position or a vicinity thereof.

主权项

1. A haptic feedback device which provides haptic feedback to a user by vibrating a panel, the haptic feedback device comprising:
the panel; a plurality of actuators placed in mutually different positions on the panel for vibrating the panel; a touch information obtaining unit configured to obtain a plurality of touch positions on the panel by detecting a plurality of touches having a state of concurrent contact on the panel; a haptic feedback determining unit configured to determine a first touch position at which to provide haptic feedback from among the plurality of touch positions; a driving signal obtaining unit configured to obtain first driving signals for driving the plurality of actuators to vibrate the panel at the first touch position according to a first haptic signal and vibrate the panel at a second touch position included in the plurality of touch positions more weakly than at the first touch position, the first driving signals being generated using transfer functions from the plurality of actuators to the first touch position or a plurality of first candidate positions and transfer functions from the plurality of actuators to the second touch position or a plurality of second candidate positions, and the first driving signals being generated using the transfer functions from the plurality of actuators to at least one of the plurality of first candidate positions and the plurality of second candidate positions; and a control position determining unit configured to determine a first control position within a first region and a second control position within a second region, the first region having a predetermined size and including the first touch position and the plurality of first candidate positions, the second region having a predetermined size and including the second touch position and the plurality of second candidate positions, and the control position determining unit is configured to determine at least one of the first control position and the second control position from vibration strengths calculated at the first touch position for the plurality of first candidate positions and the plurality of second candidate positions, respectively, wherein the plurality of actuators vibrate the panel based on the first driving signals, wherein the driving signal obtaining unit is configured to obtain, as the first driving signals, signals generated using transfer functions from the plurality of actuators to the first control position and transfer functions from the plurality of actuators to the second control position, and wherein the control position determining unit is configured to determine, as the first control position, one of the plurality of first candidate positions which yields a vibration strength at the first touch position that is greater than or equal to a predetermined vibration strength.