Invention Grant
US09230578B2 Multiple readers for high resolution and SNR for high areal density application 有权
多个读取器用于高分辨率和SNR,用于高密度应用

Multiple readers for high resolution and SNR for high areal density application
Abstract:
The present invention generally relates to a read head in a magnetic recording head. The read head utilizes two reader elements that are stacked in the down track direction within the same read gap to improve resolution and SNR by combining the signals from the two reader elements. The output waveform from each read element is asymmetric in the down track direction; however, by use of equalizer settings and waveform combining the algorithm in signal processing, the combined waveform has a similar or better resolution and higher SNR compared to a single read element in a smaller read gap.
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