Data detection method and apparatus in data storage device

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G06F 1710

Patent

active

058054782

ABSTRACT:
Data detection method and apparatus in a data storage device are provided. The data detection apparatus includes: a Random Access Memory (RAM) updating device for obtaining the average characteristic of the equalization signal z.sub.k from the symbol data a.sub.k and storing and updating the obtained result; threshold value calculator for calculating an optimal threshold value with respect to each data pattern from the average characteristic of the equalization signal z.sub.k updated in the RAM updating device; and a detector for detecting the value of the symbol data a.sub.k by comparing the equalization signal z.sub.k with the threshold value calculated in the threshold value calculator. Thus, a signal is detected by obtaining an average characteristic of a signal according to a data pattern and then using an optimal threshold value to detect the signal so that a signal having considerable non-linear distortion and a Direct Current (DC) offset can be reliably detected.

REFERENCES:
patent: 4571734 (1986-02-01), Dolivo et al.
patent: 4644564 (1987-02-01), Dolivo et al.
patent: 5132988 (1992-07-01), Fisher et al.
patent: 5375143 (1994-12-01), Kazecki et al.

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