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Equalizer adjustment for partial-response maximum-likelihood disk drive systems
Equalizer adjustment for partial-response maximum-likelihood disk drive systems
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机译:用于部分响应最大似然磁盘驱动器系统的均衡器调整
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摘要
Apparatus and method for providing equalization adjustment for a finite impulse response (FIR) digital filter are provided in a PRML data channel. A plurality of transformations are defined to transform effective tap weights in a digital filter into modified effective tap weight values by adding each said initial effective tap weight value with a selected cosine equalization adjustment function. A cosine expander circuit is provided for expanding 8-byte compressed equalizations into a 32-byte format and for altering the filter response by a selected cosine equalization adjustment function.
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