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US 12,003,196 B2Granted
Button type actuator, button type actuator feedback system comprising same, and control method therefor
AssigneeCk Materials Lab Co., Ltd.
InventorsHyeong Jun Kim, Jong Hun Lee, Ki Suk Son
Life of this patent
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Abstract
A button type actuator according to one embodiment may comprise: a case; a button part having at least a part which is moved with respect to the case by a user's pressure; a vibrator connected to the button part and including a magnetic body; and a coil for generating a magnetic field on the vibrator.
Claims19
An actuator feedback system comprising:
- a case;
- a button part of which at least a portion moves with respect to the case;
- a vibrator connected to the button part and comprising a magnetic body;
- a coil configured to generate a magnetic field in the vibrator;
- and
- a controller configured to apply, based on a magnitude or a direction of an induced electromotive force generated in the coil as the button part is manipulated by a user, a current to the coil to move the vibrator,
- wherein the controller comprises:
- an input detection unit configured to detect the induced electromotive force generated in the coil when the button part is manipulated;
- and
- a signal control unit configured to determine, based on information on the induced electromotive force detected by the input detection unit, a time point when the vibrator starts to be moved.
7 more elements
A method of controlling an actuator feedback system, the actuator feedback system comprising an actuator,
- wherein the actuator comprises:
- a case;
- button part of which at least a portion moves with respect to the case by being manipulated by a user;
- a vibrator connected to the button part and comprising a magnetic body;
- and a coil configured to generate a magnetic field in the vibrator,
- the method comprising:
- an input detection step, for detecting an induced electromotive force generated in the coil when the button part is manipulated;
- a determining step, for determining a time to move the vibrator based on a magnitude or a direction of the induced electromotive force;
- and
- a drive step, for moving the vibrator.
7 more elements
A method of controlling an actuator feedback system, the actuator feedback system comprising an actuator,
- wherein the actuator comprises:
- a case;
- a button part of which at least a portion moves with respect to the case by being manipulated by a user;
- a vibrator connected to the button part and comprising a magnetic body;
- and a coil configured to generate a magnetic field in the vibrator,
- the method comprising:
- an input detection step, for detecting an induced electromotive force generated in the coil when the button part is manipulated;
- and
- a drive step, for moving the vibrator based on a magnitude or a direction of the induced electromotive force,
- wherein
- if a voltage magnitude of the induced electromotive force is larger than a first set voltage magnitude and smaller than a second set voltage magnitude, the drive step is carried out by determining that the button part is contacted by the user and applying a contact feedback signal to the actuator, and
- if it is determined that the voltage magnitude of the induced electromotive force is equal to or larger than the first set voltage magnitude and the second set voltage magnitude, the drive step is carried out by determining that the button part is pressed by the user and applying an input feedback signal to the actuator.
9 more elements
Dependencies are inferred from the claim text.