Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate
2004-09-27
2010-02-02
Nguyen, Kevin M (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Cursor mark position control device
C345S156000, C715S701000, C715S702000
Reexamination Certificate
active
07656388
ABSTRACT:
Method and apparatus for controlling vibrotactile sensations for haptic feedback devices. An actuator in a haptic feedback device includes a rotatable eccentric mass, and information is received at the haptic feedback device causing a drive signal. The drive signal controls the actuator to oscillate the mass in two directions about an axis of rotation of the actuator such that the oscillation of the mass induces a vibration in the haptic feedback device. The magnitude and frequency of the vibration can be independently controlled by adjusting a magnitude and a frequency, respectively, of the drive signal. The vibrations can also be provided in a bi-directional mode or uni-directional mode to provide the most efficient magnitude of the vibrotactile sensations. The haptic feedback device can be, for example, a gamepad controller receiving commands from a host computer providing a graphical environment.
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Schena Bruce M.
Shahoian Erik
Immersion Corporation
Kilpatrick & Stockton LLP
Nguyen Kevin M
LandOfFree
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