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Haptic feedback device, method for driving haptic feedback device, and drive program

  • US 9,007,323 B2
  • Filed: 01/28/2013
  • Issued: 04/14/2015
  • Est. Priority Date: 02/03/2012
  • Status: Active Grant
First Claim
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1. A haptic feedback device for informing, when a user performs a touch manipulation on a three-dimensional model of a manipulation image displayed on a display unit, the user of a manipulation state of the touch manipulation, the haptic feedback device comprising:

  • a touch panel which receives a touch manipulation performed by the user at a corresponding position on a display surface of the display unit, and detects, as a touch position, the corresponding position at which the touch manipulation is received;

    a vibration unit configured to vibrate the touch panel;

    the display unit;

    a determination unit configured to calculate a path length along which the user touches the touch panel, based on a plurality of the touch positions detected by the touch panel;

    a display control unit configured to (i) display the manipulation image on the display unit, and (ii) convert the path length into a rotation angle at which the manipulation image is to be rotated about a predetermined reference point, and display, on the display unit, the manipulation image rotated by the rotation angle converted from the path length; and

    a vibration control unit configured to (i) drive, upon starting rotation of the manipulation image, the vibration unit according to a drive waveform having a predetermined amplitude and a predetermined frequency, (ii) decrease the amplitude of the drive waveform with an increase in the path length, and (iii) perform control to cause the vibration unit to vibrate according to the drive waveform the amplitude of which is decreased to zero in a predetermined time after the rotation of the manipulation image stops.

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