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US 2014/0368677 A1Published application
Actuator driving device, control method for same, and imaging apparatus
AssigneeCanon Kabushiki Kaisha
InventorHiroyo Kobuna
Life of this patent
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AssigneeCanon Kabushiki Kaisha
InventorHiroyo Kobuna
Estimating the term…
An actuator driving device drives an actuator connected to an output terminal. The control unit of the actuator driving device includes a PWM delay time setting unit, a first duty ratio setting unit, and a second duty ratio setting unit. The PWM delay time setting unit sets a delay time of pulse width modulation control for a driving voltage to be applied to the output terminal and outputs setting information to the first and second duty ratio setting units. The first duty ratio setting unit sets the first duty ratio for a first PWM output unit, and the second duty ratio setting unit sets the second duty ratio for a second PWM output unit. When positive and negative energization is performed, the control unit controls to reduce the amount of change in current in the current peak of a PWM waveform by providing a short-circuit period in response to the energization amount.
An actuator driving device, comprising:
A control method to be executed by an actuator driving device comprising a first output terminal and a second output terminal configured to energize a driving coil of an actuator;
Dependencies are inferred from the claim text.