Copyright © Philip M. Parker, INSEAD. Terms of Use.

PARTIAL RESPONSE MAXIMUM LIKELIHOOD

Specialty Definition: PARTIAL RESPONSE MAXIMUM LIKELIHOOD

DomainDefinition

Computing

Partial Response Maximum Likelihood (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". (1996-12-27). Source: The Free On-line Dictionary of Computing.

Source: compiled by the editor from various references; see credits.

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Crosswords: PARTIAL RESPONSE MAXIMUM LIKELIHOOD

Specialty definitions using "PARTIAL RESPONSE MAXIMUM LIKELIHOOD": PRML. (references)

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Alternative Orthography: PARTIAL RESPONSE MAXIMUM LIKELIHOOD


Hexadecimal (or equivalents, 770AD-1900s) (references)

50 41 52 54 49 41 4C      52 45 53 50 4F 4E 53 45      4D 41 58 49 4D 55 4D      4C 49 4B 45 4C 49 48 4F 4F 44

Leonardo da Vinci (1452-1519; backwards) (references)

            

Binary Code (1918-1938, probably earlier) (references)

01010000 01000001 01010010 01010100 01001001 01000001 01001100 00100000 01010010 01000101 01010011 01010000 01001111 01001110 01010011 01000101 00100000 01001101 01000001 01011000 01001001 01001101 01010101 01001101 00100000 01001100 01001001 01001011 01000101 01001100 01001001 01001000 01001111 01001111 01000100

HTML Code (1990) (references)

&#80 &#65 &#82 &#84 &#73 &#65 &#76 &#32 &#82 &#69 &#83 &#80 &#79 &#78 &#83 &#69 &#32 &#77 &#65 &#88 &#73 &#77 &#85 &#77 &#32 &#76 &#73 &#75 &#69 &#76 &#73 &#72 &#79 &#79 &#68

ISO 10646 (1991-1993) (references)

0050 0041 0052 0054 0049 0041 004C      0052 0045 0053 0050 004F 004E 0053 0045      004D 0041 0058 0049 004D 0055 004D      004C 0049 004B 0045 004C 0049 0048 004F 004F 0044

Encryption (beginner's substitution cypher): (references)

5035525443354625239535049485339247355843475547246434539464342494938

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INDEX

1. Crosswords
2. Orthography
3. Bibliography


  

Copyright © Philip M. Parker, INSEAD. Terms of Use.