partial response maximum likelihood meaning

• [Computer]
  <storage> (PRML) A method for converting the weak analog signal from the head of a magnetic disk drive into a digital signal. PRML attempts to correctly interpret even small changes in the analog signal, whereas peak detection relies on fixed thresholds. Because PRML can correctly decode a weaker signal it allows higher density recording.
  
  For example, PRML would read the magnetic flux density pattern 70, 60, 55, 60, 70 as binary "101", and the same for 45, 40, 30, 40, 45. A peak detector would decode everything above, say, 50 as high, and below 50 as low, so the first pattern would read "111" and the second as "000".

• Prml partial response maximum likelihood
• Prml partial response maximum likelihood
• Data are read back as a weak and noisy areal densities than other detection schemes, such as peak detection, partial response maximum likelihood ( PRML ), and extended partial-response maximum likelihood ( EPRML ) detection.

• "partial response maximum likelihood" meaning in Chinese: 部分回应最大似然