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three position modulation (3PM)

3PM coding, Three Position Modulation, enables a high packing density compared to other coding methods, but it requires complex hardware.

3PM

3PM

coding 3PM coding is an adaptable coding according to the Run Lenght Limited (RLL 2.7), in which there may be a minimum of two and a maximum of seven 0 bits between two 1 bits. In 3PM coding, three input bits are converted into 6 output bits. The minimum time difference between transitions is at least twice the clock period, the maximum is six times the clock period.

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Englisch: three position modulation - 3PM
Updated at: 21.12.2011
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