发明名称 |
Apparatus and method for generating sinusoidal waves, and system for driving piezo actuator using the same |
摘要 |
An apparatus for generating sinusoidal waves may include: a look-up table storage unit storing a look-up table including a plurality of sampling points determined based on a base frequency and a sampling frequency; a sinusoidal wave generating unit calculating an integer ratio of a target frequency to the base frequency and obtaining sampling points from the look-up table by reflecting the integer ratio so as to generate a sinusoidal wave; and a correction control unit calculating noise information in the generated sinusoidal wave, and controlling the sinusoidal wave generating unit to correct the sampling frequency if the noise information fails to meet a predetermined requirement. |
申请公布号 |
US9312467(B2) |
申请公布日期 |
2016.04.12 |
申请号 |
US201414199727 |
申请日期 |
2014.03.06 |
申请人 |
Samsung Electro-Mechanics Co., Ltd. |
发明人 |
Kim Gyu Won |
分类号 |
H01L41/04;H03M1/12;H03M1/66;G06F1/03;H02N2/14 |
主分类号 |
H01L41/04 |
代理机构 |
NSIP Law |
代理人 |
NSIP Law |
主权项 |
1. An apparatus for generating sinusoidal waves, comprising:
a look-up table storage unit storing a look-up table including a plurality of sampling points determined based on a base frequency and a sampling frequency; a sinusoidal wave generating unit calculating an integer ratio of a target frequency to the base frequency and obtaining sampling points from the look-up table by reflecting the integer ratio so as to generate a sinusoidal wave; and a correction control unit calculating noise information in the generated sinusoidal wave, and controlling the sinusoidal wave generating unit to correct the sampling frequency if the noise information fails to meet a predetermined requirement. |
地址 |
Suwon-si KR |