Track Error detection device having a function removing phase-offset and a method removing phase-offset thereof

摘要

His track error detection apparatus and method having a phase elimination phase cancellation is initiated. Track error detection unit and the equalizer to equalize the input to be A, B, C, D to a predetermined level signal, the equalized by the equalization unit A, B, C, in the comparison section, and a comparison unit for quantizing the signal D quantized A, B, C, has a phase shift to remove the phase difference between each other by a predetermined control signal of the D signal. In addition, the system has a control unit for providing a predetermined control signal to remove the phase difference between the quantized A, B, C, D signals to the phase shifting unit. Therefore, it is possible to improve the accuracy and reliability of the track error signal is detected by being able to remove all types of phase difference that can be generated in the track error detection unit. In addition, by adjusting the phase of the quantized signal using a lighting unit compared to the process of removing the phase difference can reduce the power consumption of the overall system, in addition, it is possible to reduce the hardware size.