| 摘要 |
Apparatus for generating estimates of valid input signal values at sampling instants comprises a first data slicer (3) for slicing the input signal at a given level, data sequence detectors (205, 207) for detecting given data sequences in the input signal, second (301) and third (302) data slicers for slicing the input signal at signal values estimated for a given data bit of the given data sequences, memory elements (303, 304, 305; 306, 307, 308) for storing the outputs of the second (301) and third (302) data slicers when slicing the given data bit, and incrementing means (309, 311; 310, 312) for increasing or decreasing the estimated values depending on whether the stored outputs indicate the input signal value was above or below the estimated value when the given data bit was sliced by the second (301) or third (302) data slicer.
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