| 摘要 |
The present invention is a vibration motor driving apparatus, comprising a serial interface for receiving an effect command (effect digital data or effect generating command digital data) from a main processor upon occurrence of an event, a unit for generating a clock when the effect command is received from the serial interface unit, a vibration motor driving signal generating unit including an effect data generating part for outputting effect data having a resonance frequency of a vibration motor on the basis of the effect command received from the serial interface unit and the clock received from the clock generating unit, and a D/A converting part for converting the effect data into a vibration motor driving signal, and the vibration motor which vibrates in accordance with the vibration motor driving signal to generate a haptic rhythm. One vibration motor driving apparatus enables the use of a variety of vibration motors for each of a plurality of vibration frequencies. The present invention delicately tunes a resonance frequency to improve vibrating force, and accurately and finely adjust the operation and amplitude of the vibration motor to improve the haptic rhythm properties of products. The present invention enables a haptic function to be performed without restrictions even in a main processor which does not have a PWM signal output function. Further, the present invention receives effect generating command data including additional information on waveform, amplitude, cycle, and the like, and generates a predetermined effect waveform through hardware in the vibration motor driving apparatus, thereby eliminating the need for effect digital data from the main processor, minimizing the volume of the control signal being received, and creating a variety of haptic rhythms, resulting in significantly reduced loads for the main processor. |
