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US 2009/0195207 A1Published application
Servo Control Circuit
AssigneeChip Goal Electronics Corporation
InventorHui-Yen Hsieh
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Abstract
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.
Claims10
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.
3 more elements
Dependencies are inferred from the claim text.