Relative timing precompensation of high-speed pulse signals for digital magnetic recoding
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United States of America Patent
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Oct 16, 1990
Grant Date -
N/A
app pub date -
Mar 14, 1990
filing date -
Mar 14, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A circuit for a partial-response, maximum likelihood (PRML) magnetic recording channel stretches and shrinks pulses in particular write-data sequences. The circuit maintains precise tracking in the delays among multiple signals by sending them through the same number of identical circuits on the same chip. An external digital code varies the amount of delay in a clock signal so as to stretch and shrink the data pulses by different amounts.
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