Chip Goal Electronics Corporation

Hui-Yen Hsieh

The present invention discloses a bi-direction driver IC and a method for bi-directionally driving an object. The method comprises: providing a first and a second integrated circuit (IC) chips, coupled with an object to be driven, wherein each of the first and second IC chips is capable of single-directionally driving the object; providing a reverse current path in each of the first and second IC chips; driving the object in a first direction by the first IC chip, wherein current flows through the reverse current path in the second IC chip; and driving the object in a second direction by the second IC chip, wherein current flows through the reverse current path in the first IC chip.

Bi-direction driver IC and method for bi-directionally driving an object

The present invention discloses a servo control circuit comprising: a first node for receiving a control voltage; a second node for receiving a feedback voltage; an operational amplifier controlling a current on a path according to the voltages at the first and second nodes, the path including an internal voltage node thereon; an analog to digital converter (ADC) for converting the voltage at the internal voltage node to a digital signal; and a control logic circuit for generating a servo control signal according to the digital signal.

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Hsinchu, Taiwan

Hui-Yen Hsieh